/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:13:06,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:13:06,276 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 01:13:06,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:13:06,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:13:06,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:13:06,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:13:06,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:13:06,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:13:06,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:13:06,320 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:13:06,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:13:06,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:13:06,322 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:13:06,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:13:06,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:13:06,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:13:06,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:13:06,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:13:06,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:13:06,323 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:13:06,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:13:06,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:13:06,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:13:06,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:13:06,325 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:13:06,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:13:06,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:13:06,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:13:06,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:13:06,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:13:06,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:13:06,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:13:06,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:13:06,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:13:06,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:13:06,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:13:06,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:13:06,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:13:06,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:13:06,647 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:13:06,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-08-24 01:13:07,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:13:08,154 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:13:08,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-08-24 01:13:08,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fdded42/36085ecbc9124027bf4810c49bcea84f/FLAG819628c1e [2023-08-24 01:13:08,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fdded42/36085ecbc9124027bf4810c49bcea84f [2023-08-24 01:13:08,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:13:08,187 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:13:08,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:13:08,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:13:08,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:13:08,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658bab9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08, skipping insertion in model container [2023-08-24 01:13:08,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,218 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:13:08,384 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/chl-simpl-str-subst.wvr.c[2575,2588] [2023-08-24 01:13:08,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:13:08,402 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:13:08,442 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/chl-simpl-str-subst.wvr.c[2575,2588] [2023-08-24 01:13:08,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:13:08,457 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:13:08,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08 WrapperNode [2023-08-24 01:13:08,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:13:08,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:13:08,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:13:08,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:13:08,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,509 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 173 [2023-08-24 01:13:08,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:13:08,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:13:08,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:13:08,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:13:08,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:13:08,535 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:13:08,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:13:08,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:13:08,536 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (1/1) ... [2023-08-24 01:13:08,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:13:08,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:13:08,573 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 01:13:08,582 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 01:13:08,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:13:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:13:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:13:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:13:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:13:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 01:13:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 01:13:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:13:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:13:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:13:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:13:08,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:13:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:13:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:13:08,603 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 01:13:08,706 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:13:08,708 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:13:08,991 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:13:09,001 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:13:09,002 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 01:13:09,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:13:09 BoogieIcfgContainer [2023-08-24 01:13:09,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:13:09,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:13:09,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:13:09,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:13:09,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:13:08" (1/3) ... [2023-08-24 01:13:09,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3598c3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:13:09, skipping insertion in model container [2023-08-24 01:13:09,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:13:08" (2/3) ... [2023-08-24 01:13:09,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3598c3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:13:09, skipping insertion in model container [2023-08-24 01:13:09,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:13:09" (3/3) ... [2023-08-24 01:13:09,010 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2023-08-24 01:13:09,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:13:09,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:13:09,028 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:13:09,150 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 01:13:09,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 201 transitions, 426 flow [2023-08-24 01:13:09,309 INFO L124 PetriNetUnfolderBase]: 14/198 cut-off events. [2023-08-24 01:13:09,309 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:13:09,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 198 events. 14/198 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 367 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-08-24 01:13:09,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 201 transitions, 426 flow [2023-08-24 01:13:09,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 188 transitions, 394 flow [2023-08-24 01:13:09,335 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:13:09,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 188 transitions, 394 flow [2023-08-24 01:13:09,345 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 188 transitions, 394 flow [2023-08-24 01:13:09,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 188 transitions, 394 flow [2023-08-24 01:13:09,413 INFO L124 PetriNetUnfolderBase]: 14/188 cut-off events. [2023-08-24 01:13:09,413 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:13:09,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 14/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 366 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-08-24 01:13:09,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 9384 [2023-08-24 01:13:15,210 INFO L134 LiptonReduction]: Checked pairs total: 8713 [2023-08-24 01:13:15,211 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-24 01:13:15,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:13:15,229 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;@48c7265, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:13:15,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 01:13:15,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:13:15,235 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 01:13:15,235 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:13:15,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:15,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:13:15,237 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 01:13:15,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:15,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1579697146, now seen corresponding path program 1 times [2023-08-24 01:13:15,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:15,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309798576] [2023-08-24 01:13:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:15,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:16,978 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 01:13:16,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:16,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309798576] [2023-08-24 01:13:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309798576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:16,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:16,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:13:16,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414691705] [2023-08-24 01:13:16,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:16,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:13:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:17,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:13:17,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:13:17,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 421 [2023-08-24 01:13:17,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 01:13:17,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:17,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 421 [2023-08-24 01:13:17,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:17,520 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-08-24 01:13:17,520 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-24 01:13:17,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-08-24 01:13:17,522 INFO L140 encePairwiseOnDemand]: 416/421 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-08-24 01:13:17,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-08-24 01:13:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 01:13:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 01:13:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 934 transitions. [2023-08-24 01:13:17,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36975455265241486 [2023-08-24 01:13:17,543 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 934 transitions. [2023-08-24 01:13:17,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 934 transitions. [2023-08-24 01:13:17,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:17,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 934 transitions. [2023-08-24 01:13:17,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.66666666666666) internal successors, (934), 6 states have internal predecessors, (934), 0 states have call successors, (0), 0 states 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 01:13:17,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:17,562 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:17,563 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 934 transitions. [2023-08-24 01:13:17,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-08-24 01:13:17,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 01:13:17,568 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-08-24 01:13:17,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-24 01:13:17,573 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-24 01:13:17,573 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-08-24 01:13:17,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 01:13:17,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:17,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:13:17,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:13:17,574 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 01:13:17,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash -65087284, now seen corresponding path program 2 times [2023-08-24 01:13:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:17,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995342909] [2023-08-24 01:13:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:18,496 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 01:13:18,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:18,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995342909] [2023-08-24 01:13:18,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995342909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:13:18,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695139573] [2023-08-24 01:13:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:18,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:13:18,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:13:18,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:13:18,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 421 [2023-08-24 01:13:18,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 01:13:18,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:18,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 421 [2023-08-24 01:13:18,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:18,748 INFO L124 PetriNetUnfolderBase]: 38/116 cut-off events. [2023-08-24 01:13:18,748 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-24 01:13:18,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 413 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-08-24 01:13:18,749 INFO L140 encePairwiseOnDemand]: 416/421 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-08-24 01:13:18,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-08-24 01:13:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 01:13:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 01:13:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 934 transitions. [2023-08-24 01:13:18,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36975455265241486 [2023-08-24 01:13:18,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 934 transitions. [2023-08-24 01:13:18,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 934 transitions. [2023-08-24 01:13:18,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:18,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 934 transitions. [2023-08-24 01:13:18,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.66666666666666) internal successors, (934), 6 states have internal predecessors, (934), 0 states have call successors, (0), 0 states 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 01:13:18,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:18,760 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:18,760 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 934 transitions. [2023-08-24 01:13:18,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-08-24 01:13:18,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 01:13:18,763 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-08-24 01:13:18,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-08-24 01:13:18,764 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-24 01:13:18,764 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-08-24 01:13:18,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 01:13:18,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:18,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:13:18,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 01:13:18,765 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 01:13:18,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash 255126654, now seen corresponding path program 3 times [2023-08-24 01:13:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979489029] [2023-08-24 01:13:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:20,068 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 01:13:20,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:20,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979489029] [2023-08-24 01:13:20,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979489029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:20,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:20,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:13:20,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870080563] [2023-08-24 01:13:20,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:20,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:13:20,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:13:20,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:13:20,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 421 [2023-08-24 01:13:20,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 01:13:20,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:20,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 421 [2023-08-24 01:13:20,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:20,332 INFO L124 PetriNetUnfolderBase]: 33/103 cut-off events. [2023-08-24 01:13:20,333 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-08-24 01:13:20,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 337 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-08-24 01:13:20,335 INFO L140 encePairwiseOnDemand]: 416/421 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-08-24 01:13:20,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-08-24 01:13:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 01:13:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 01:13:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 932 transitions. [2023-08-24 01:13:20,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36896278701504354 [2023-08-24 01:13:20,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 932 transitions. [2023-08-24 01:13:20,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 932 transitions. [2023-08-24 01:13:20,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:20,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 932 transitions. [2023-08-24 01:13:20,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 01:13:20,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:20,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:20,347 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 932 transitions. [2023-08-24 01:13:20,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-08-24 01:13:20,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-24 01:13:20,352 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-08-24 01:13:20,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-08-24 01:13:20,353 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-24 01:13:20,356 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-08-24 01:13:20,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 01:13:20,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:20,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:13:20,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 01:13:20,357 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 01:13:20,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1251070020, now seen corresponding path program 4 times [2023-08-24 01:13:20,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:20,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238459972] [2023-08-24 01:13:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:21,200 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 01:13:21,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:21,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238459972] [2023-08-24 01:13:21,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238459972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:21,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:21,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:13:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544739384] [2023-08-24 01:13:21,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:21,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:13:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:13:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:13:21,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 421 [2023-08-24 01:13:21,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 01:13:21,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:21,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 421 [2023-08-24 01:13:21,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:21,564 INFO L124 PetriNetUnfolderBase]: 17/59 cut-off events. [2023-08-24 01:13:21,564 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-08-24 01:13:21,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 17/59 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2023-08-24 01:13:21,565 INFO L140 encePairwiseOnDemand]: 416/421 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-08-24 01:13:21,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-08-24 01:13:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 01:13:21,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 01:13:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 924 transitions. [2023-08-24 01:13:21,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3657957244655582 [2023-08-24 01:13:21,569 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 924 transitions. [2023-08-24 01:13:21,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 924 transitions. [2023-08-24 01:13:21,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:21,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 924 transitions. [2023-08-24 01:13:21,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 01:13:21,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:21,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:21,576 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 924 transitions. [2023-08-24 01:13:21,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-08-24 01:13:21,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-24 01:13:21,581 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-08-24 01:13:21,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2023-08-24 01:13:21,582 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-24 01:13:21,582 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-08-24 01:13:21,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 01:13:21,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:21,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:13:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 01:13:21,585 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 01:13:21,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1460522632, now seen corresponding path program 5 times [2023-08-24 01:13:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756103102] [2023-08-24 01:13:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:21,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:22,596 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 01:13:22,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:22,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756103102] [2023-08-24 01:13:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756103102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:22,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:22,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 01:13:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295654343] [2023-08-24 01:13:22,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 01:13:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 01:13:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 01:13:22,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 421 [2023-08-24 01:13:22,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:22,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:22,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 421 [2023-08-24 01:13:22,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:22,905 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-08-24 01:13:22,905 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-24 01:13:22,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 40 events. 8/40 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2023-08-24 01:13:22,906 INFO L140 encePairwiseOnDemand]: 416/421 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-24 01:13:22,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 178 flow [2023-08-24 01:13:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 01:13:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 01:13:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1032 transitions. [2023-08-24 01:13:22,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501866304716661 [2023-08-24 01:13:22,912 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1032 transitions. [2023-08-24 01:13:22,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1032 transitions. [2023-08-24 01:13:22,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:22,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1032 transitions. [2023-08-24 01:13:22,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.42857142857142) internal successors, (1032), 7 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 01:13:22,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 421.0) internal successors, (3368), 8 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states 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 01:13:22,919 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 421.0) internal successors, (3368), 8 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states 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 01:13:22,920 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 7 states and 1032 transitions. [2023-08-24 01:13:22,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 178 flow [2023-08-24 01:13:22,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-24 01:13:22,925 INFO L231 Difference]: Finished difference. Result has 34 places, 16 transitions, 56 flow [2023-08-24 01:13:22,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=56, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2023-08-24 01:13:22,928 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-24 01:13:22,928 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 56 flow [2023-08-24 01:13:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:22,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:22,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:13:22,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 01:13:22,929 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 01:13:22,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2031977438, now seen corresponding path program 6 times [2023-08-24 01:13:22,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:22,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655390934] [2023-08-24 01:13:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:23,936 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 01:13:23,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655390934] [2023-08-24 01:13:23,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655390934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:23,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:23,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 01:13:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105697517] [2023-08-24 01:13:23,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:23,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 01:13:23,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 01:13:23,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 01:13:23,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 421 [2023-08-24 01:13:23,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 16 transitions, 56 flow. Second operand has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:23,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:23,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 421 [2023-08-24 01:13:23,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:24,323 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-24 01:13:24,323 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 01:13:24,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-08-24 01:13:24,323 INFO L140 encePairwiseOnDemand]: 416/421 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-24 01:13:24,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 94 flow [2023-08-24 01:13:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 01:13:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 01:13:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 877 transitions. [2023-08-24 01:13:24,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34718923198733176 [2023-08-24 01:13:24,327 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 877 transitions. [2023-08-24 01:13:24,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 877 transitions. [2023-08-24 01:13:24,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:24,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 877 transitions. [2023-08-24 01:13:24,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.16666666666666) internal successors, (877), 6 states have internal predecessors, (877), 0 states have call successors, (0), 0 states 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 01:13:24,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:24,333 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states 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 01:13:24,333 INFO L175 Difference]: Start difference. First operand has 34 places, 16 transitions, 56 flow. Second operand 6 states and 877 transitions. [2023-08-24 01:13:24,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 94 flow [2023-08-24 01:13:24,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 79 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-24 01:13:24,334 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-24 01:13:24,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-24 01:13:24,337 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-24 01:13:24,337 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-24 01:13:24,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:24,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 01:13:24,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 01:13:24,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 01:13:24,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 01:13:24,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 01:13:24,341 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-24 01:13:24,343 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:13:24,343 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:13:24,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:13:24 BasicIcfg [2023-08-24 01:13:24,347 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:13:24,348 INFO L158 Benchmark]: Toolchain (without parser) took 16160.59ms. Allocated memory was 377.5MB in the beginning and 566.2MB in the end (delta: 188.7MB). Free memory was 354.1MB in the beginning and 254.7MB in the end (delta: 99.4MB). Peak memory consumption was 290.6MB. Max. memory is 16.0GB. [2023-08-24 01:13:24,349 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 377.5MB. Free memory was 354.1MB in the beginning and 353.8MB in the end (delta: 314.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:13:24,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.86ms. Allocated memory is still 377.5MB. Free memory was 354.1MB in the beginning and 343.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 01:13:24,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.24ms. Allocated memory is still 377.5MB. Free memory was 343.0MB in the beginning and 340.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:13:24,352 INFO L158 Benchmark]: Boogie Preprocessor took 24.15ms. Allocated memory is still 377.5MB. Free memory was 340.9MB in the beginning and 339.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:13:24,352 INFO L158 Benchmark]: RCFGBuilder took 468.55ms. Allocated memory is still 377.5MB. Free memory was 339.2MB in the beginning and 320.9MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 01:13:24,353 INFO L158 Benchmark]: TraceAbstraction took 15341.95ms. Allocated memory was 377.5MB in the beginning and 566.2MB in the end (delta: 188.7MB). Free memory was 320.3MB in the beginning and 254.7MB in the end (delta: 65.6MB). Peak memory consumption was 257.1MB. Max. memory is 16.0GB. [2023-08-24 01:13:24,354 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 377.5MB. Free memory was 354.1MB in the beginning and 353.8MB in the end (delta: 314.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 267.86ms. Allocated memory is still 377.5MB. Free memory was 354.1MB in the beginning and 343.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.24ms. Allocated memory is still 377.5MB. Free memory was 343.0MB in the beginning and 340.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.15ms. Allocated memory is still 377.5MB. Free memory was 340.9MB in the beginning and 339.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 468.55ms. Allocated memory is still 377.5MB. Free memory was 339.2MB in the beginning and 320.9MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 15341.95ms. Allocated memory was 377.5MB in the beginning and 566.2MB in the end (delta: 188.7MB). Free memory was 320.3MB in the beginning and 254.7MB in the end (delta: 65.6MB). Peak memory consumption was 257.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 184 PlacesBefore, 26 PlacesAfterwards, 188 TransitionsBefore, 16 TransitionsAfterwards, 9384 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 96 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 44 ConcurrentYvCompositions, 14 ChoiceCompositions, 220 TotalNumberOfCompositions, 8713 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8713, independent: 8713, independent conditional: 0, independent unconditional: 8713, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5808, independent: 5808, independent conditional: 0, independent unconditional: 5808, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8713, independent: 2905, independent conditional: 0, independent unconditional: 2905, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 5808, unknown conditional: 0, unknown unconditional: 5808] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 284 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: 15.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 430 IncrementalHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 430 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, InterpolantAutomatonStates: 37, 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 01:13:24,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...