/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:01:11,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:01:11,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:01:11,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:01:11,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:01:11,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:01:11,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:01:11,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:01:11,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:01:11,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:01:11,208 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:01:11,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:01:11,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:01:11,209 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:01:11,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:01:11,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:01:11,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:01:11,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:01:11,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:01:11,211 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:01:11,211 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:01:11,212 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:01:11,212 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:01:11,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:01:11,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:01:11,213 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:01:11,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:01:11,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:01:11,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:01:11,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:01:11,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:01:11,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:01:11,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:01:11,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:01:11,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:01:11,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:01:11,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:01:11,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:01:11,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:01:11,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:01:11,551 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:01:11,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.i [2023-08-26 21:01:12,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:01:12,916 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:01:12,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.i [2023-08-26 21:01:12,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f553c01ee/6fb3b918737948d1bd5967e34fe6852a/FLAGa238ac1ed [2023-08-26 21:01:12,941 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f553c01ee/6fb3b918737948d1bd5967e34fe6852a [2023-08-26 21:01:12,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:01:12,944 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:01:12,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:01:12,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:01:12,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:01:12,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:01:12" (1/1) ... [2023-08-26 21:01:12,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec6626f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:12, skipping insertion in model container [2023-08-26 21:01:12,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:01:12" (1/1) ... [2023-08-26 21:01:12,991 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:01:13,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:01:13,343 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:01:13,369 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-26 21:01:13,371 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-26 21:01:13,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:01:13,437 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:01:13,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13 WrapperNode [2023-08-26 21:01:13,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:01:13,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:01:13,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:01:13,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:01:13,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,498 INFO L138 Inliner]: procedures = 177, calls = 48, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 201 [2023-08-26 21:01:13,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:01:13,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:01:13,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:01:13,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:01:13,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:01:13,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:01:13,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:01:13,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:01:13,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (1/1) ... [2023-08-26 21:01:13,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:01:13,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:01:13,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:01:13,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:01:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 21:01:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-26 21:01:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-26 21:01:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:01:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:01:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:01:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:01:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:01:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:01:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:01:13,634 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:01:13,796 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:01:13,799 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:01:14,191 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:01:14,399 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:01:14,399 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 21:01:14,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:01:14 BoogieIcfgContainer [2023-08-26 21:01:14,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:01:14,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:01:14,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:01:14,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:01:14,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:01:12" (1/3) ... [2023-08-26 21:01:14,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4534312c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:01:14, skipping insertion in model container [2023-08-26 21:01:14,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:01:13" (2/3) ... [2023-08-26 21:01:14,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4534312c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:01:14, skipping insertion in model container [2023-08-26 21:01:14,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:01:14" (3/3) ... [2023-08-26 21:01:14,408 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-2.i [2023-08-26 21:01:14,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:01:14,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-26 21:01:14,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:01:14,494 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:01:14,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 273 flow [2023-08-26 21:01:14,565 INFO L124 PetriNetUnfolderBase]: 11/144 cut-off events. [2023-08-26 21:01:14,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:01:14,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 11/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-26 21:01:14,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 134 transitions, 273 flow [2023-08-26 21:01:14,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 134 transitions, 273 flow [2023-08-26 21:01:14,577 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:01:14,584 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 134 transitions, 273 flow [2023-08-26 21:01:14,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 134 transitions, 273 flow [2023-08-26 21:01:14,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 273 flow [2023-08-26 21:01:14,610 INFO L124 PetriNetUnfolderBase]: 11/144 cut-off events. [2023-08-26 21:01:14,611 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:01:14,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 11/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2023-08-26 21:01:14,613 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-08-26 21:01:19,499 INFO L134 LiptonReduction]: Checked pairs total: 2857 [2023-08-26 21:01:19,500 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-26 21:01:19,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:01:19,516 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;@ec02b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:01:19,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-26 21:01:19,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:01:19,521 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-26 21:01:19,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:01:19,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:19,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 21:01:19,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:01:19,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash -855455727, now seen corresponding path program 1 times [2023-08-26 21:01:19,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:19,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921964894] [2023-08-26 21:01:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:19,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:01:19,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:01:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:01:19,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:01:19,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:01:19,663 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-26 21:01:19,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-26 21:01:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-26 21:01:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-26 21:01:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-26 21:01:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-26 21:01:19,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-26 21:01:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-26 21:01:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-26 21:01:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (13 of 23 remaining) [2023-08-26 21:01:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-26 21:01:19,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-26 21:01:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-26 21:01:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-26 21:01:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-26 21:01:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-26 21:01:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-26 21:01:19,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-26 21:01:19,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-26 21:01:19,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-26 21:01:19,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (2 of 23 remaining) [2023-08-26 21:01:19,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-26 21:01:19,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-26 21:01:19,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:01:19,669 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 21:01:19,672 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:01:19,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 21:01:19,738 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:01:19,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 233 transitions, 478 flow [2023-08-26 21:01:19,789 INFO L124 PetriNetUnfolderBase]: 21/255 cut-off events. [2023-08-26 21:01:19,789 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:01:19,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 255 events. 21/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 551 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 208. Up to 6 conditions per place. [2023-08-26 21:01:19,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 233 transitions, 478 flow [2023-08-26 21:01:19,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 233 transitions, 478 flow [2023-08-26 21:01:19,796 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:01:19,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 233 transitions, 478 flow [2023-08-26 21:01:19,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 233 transitions, 478 flow [2023-08-26 21:01:19,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 233 transitions, 478 flow [2023-08-26 21:01:19,852 INFO L124 PetriNetUnfolderBase]: 21/255 cut-off events. [2023-08-26 21:01:19,853 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:01:19,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 255 events. 21/255 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 551 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 208. Up to 6 conditions per place. [2023-08-26 21:01:19,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 24500 [2023-08-26 21:01:24,715 INFO L134 LiptonReduction]: Checked pairs total: 63770 [2023-08-26 21:01:24,716 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-26 21:01:24,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:01:24,718 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;@ec02b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:01:24,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-08-26 21:01:24,722 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:01:24,722 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2023-08-26 21:01:24,722 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:01:24,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:24,722 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 21:01:24,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 21:01:24,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:24,723 INFO L85 PathProgramCache]: Analyzing trace with hash 801730074, now seen corresponding path program 1 times [2023-08-26 21:01:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:24,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692435208] [2023-08-26 21:01:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:24,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:01:24,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:01:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:01:24,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:01:24,792 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:01:24,792 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2023-08-26 21:01:24,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 34 remaining) [2023-08-26 21:01:24,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 34 remaining) [2023-08-26 21:01:24,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 34 remaining) [2023-08-26 21:01:24,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 34 remaining) [2023-08-26 21:01:24,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 34 remaining) [2023-08-26 21:01:24,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 34 remaining) [2023-08-26 21:01:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 34 remaining) [2023-08-26 21:01:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 34 remaining) [2023-08-26 21:01:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (24 of 34 remaining) [2023-08-26 21:01:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 34 remaining) [2023-08-26 21:01:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 34 remaining) [2023-08-26 21:01:24,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 34 remaining) [2023-08-26 21:01:24,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 34 remaining) [2023-08-26 21:01:24,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 34 remaining) [2023-08-26 21:01:24,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 34 remaining) [2023-08-26 21:01:24,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 34 remaining) [2023-08-26 21:01:24,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 34 remaining) [2023-08-26 21:01:24,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 34 remaining) [2023-08-26 21:01:24,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 34 remaining) [2023-08-26 21:01:24,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (13 of 34 remaining) [2023-08-26 21:01:24,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 34 remaining) [2023-08-26 21:01:24,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 34 remaining) [2023-08-26 21:01:24,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 34 remaining) [2023-08-26 21:01:24,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 34 remaining) [2023-08-26 21:01:24,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 34 remaining) [2023-08-26 21:01:24,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 34 remaining) [2023-08-26 21:01:24,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 34 remaining) [2023-08-26 21:01:24,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 34 remaining) [2023-08-26 21:01:24,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 34 remaining) [2023-08-26 21:01:24,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 34 remaining) [2023-08-26 21:01:24,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (2 of 34 remaining) [2023-08-26 21:01:24,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 34 remaining) [2023-08-26 21:01:24,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 34 remaining) [2023-08-26 21:01:24,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:01:24,800 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 21:01:24,800 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:01:24,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 21:01:24,860 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:01:24,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 332 transitions, 685 flow [2023-08-26 21:01:24,923 INFO L124 PetriNetUnfolderBase]: 31/366 cut-off events. [2023-08-26 21:01:24,924 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 21:01:24,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 366 events. 31/366 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1106 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 306. Up to 8 conditions per place. [2023-08-26 21:01:24,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 332 transitions, 685 flow [2023-08-26 21:01:24,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 332 transitions, 685 flow [2023-08-26 21:01:24,935 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:01:24,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 332 transitions, 685 flow [2023-08-26 21:01:24,936 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 332 transitions, 685 flow [2023-08-26 21:01:24,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 332 transitions, 685 flow [2023-08-26 21:01:24,997 INFO L124 PetriNetUnfolderBase]: 31/366 cut-off events. [2023-08-26 21:01:24,997 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 21:01:25,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 366 events. 31/366 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1106 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 306. Up to 8 conditions per place. [2023-08-26 21:01:25,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 65856 [2023-08-26 21:01:31,349 INFO L134 LiptonReduction]: Checked pairs total: 171688 [2023-08-26 21:01:31,349 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-08-26 21:01:31,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:01:31,352 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;@ec02b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:01:31,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-08-26 21:01:31,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:01:31,356 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-08-26 21:01:31,356 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 21:01:31,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:31,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:01:31,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:01:31,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:31,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1862615008, now seen corresponding path program 1 times [2023-08-26 21:01:31,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:31,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7067892] [2023-08-26 21:01:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:31,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:01:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:01:31,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:01:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7067892] [2023-08-26 21:01:31,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7067892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:01:31,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:01:31,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:01:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696784833] [2023-08-26 21:01:31,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:01:31,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:01:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:01:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:01:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:01:31,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 587 [2023-08-26 21:01:31,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:31,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:01:31,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 587 [2023-08-26 21:01:31,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:01:42,557 INFO L124 PetriNetUnfolderBase]: 89195/143303 cut-off events. [2023-08-26 21:01:42,557 INFO L125 PetriNetUnfolderBase]: For 3898/3898 co-relation queries the response was YES. [2023-08-26 21:01:42,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265229 conditions, 143303 events. 89195/143303 cut-off events. For 3898/3898 co-relation queries the response was YES. Maximal size of possible extension queue 3770. Compared 1328457 event pairs, 6569 based on Foata normal form. 0/98702 useless extension candidates. Maximal degree in co-relation 146726. Up to 87086 conditions per place. [2023-08-26 21:01:43,789 INFO L140 encePairwiseOnDemand]: 571/587 looper letters, 245 selfloop transitions, 9 changer transitions 0/306 dead transitions. [2023-08-26 21:01:43,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 306 transitions, 1172 flow [2023-08-26 21:01:43,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:01:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:01:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1659 transitions. [2023-08-26 21:01:43,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652470187393527 [2023-08-26 21:01:43,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1659 transitions. [2023-08-26 21:01:43,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1659 transitions. [2023-08-26 21:01:43,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:01:43,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1659 transitions. [2023-08-26 21:01:43,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 331.8) internal successors, (1659), 5 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:43,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:43,834 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:43,836 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 309 flow. Second operand 5 states and 1659 transitions. [2023-08-26 21:01:43,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 306 transitions, 1172 flow [2023-08-26 21:01:43,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 306 transitions, 1160 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-26 21:01:43,850 INFO L231 Difference]: Finished difference. Result has 137 places, 145 transitions, 363 flow [2023-08-26 21:01:43,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=137, PETRI_TRANSITIONS=145} [2023-08-26 21:01:43,856 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 7 predicate places. [2023-08-26 21:01:43,857 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 145 transitions, 363 flow [2023-08-26 21:01:43,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:43,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:01:43,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:01:43,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:01:43,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:01:43,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:01:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1232223490, now seen corresponding path program 1 times [2023-08-26 21:01:43,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:01:43,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178542169] [2023-08-26 21:01:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:01:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:01:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:01:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:01:43,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:01:43,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178542169] [2023-08-26 21:01:43,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178542169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:01:43,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:01:43,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:01:43,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793173639] [2023-08-26 21:01:43,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:01:43,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:01:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:01:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:01:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:01:43,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 587 [2023-08-26 21:01:43,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 145 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:01:43,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:01:43,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 587 [2023-08-26 21:01:43,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:02:19,787 INFO L124 PetriNetUnfolderBase]: 363523/500591 cut-off events. [2023-08-26 21:02:19,787 INFO L125 PetriNetUnfolderBase]: For 57599/64911 co-relation queries the response was YES. [2023-08-26 21:02:21,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042171 conditions, 500591 events. 363523/500591 cut-off events. For 57599/64911 co-relation queries the response was YES. Maximal size of possible extension queue 12388. Compared 4047563 event pairs, 109826 based on Foata normal form. 6417/357650 useless extension candidates. Maximal degree in co-relation 813164. Up to 449195 conditions per place. [2023-08-26 21:02:23,462 INFO L140 encePairwiseOnDemand]: 562/587 looper letters, 178 selfloop transitions, 4 changer transitions 0/201 dead transitions. [2023-08-26 21:02:23,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 201 transitions, 867 flow [2023-08-26 21:02:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:02:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:02:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 925 transitions. [2023-08-26 21:02:23,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252697331061896 [2023-08-26 21:02:23,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 925 transitions. [2023-08-26 21:02:23,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 925 transitions. [2023-08-26 21:02:23,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:02:23,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 925 transitions. [2023-08-26 21:02:23,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:23,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:23,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:23,473 INFO L175 Difference]: Start difference. First operand has 137 places, 145 transitions, 363 flow. Second operand 3 states and 925 transitions. [2023-08-26 21:02:23,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 201 transitions, 867 flow [2023-08-26 21:02:23,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 201 transitions, 867 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:02:23,525 INFO L231 Difference]: Finished difference. Result has 140 places, 148 transitions, 429 flow [2023-08-26 21:02:23,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=429, PETRI_PLACES=140, PETRI_TRANSITIONS=148} [2023-08-26 21:02:23,526 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 10 predicate places. [2023-08-26 21:02:23,527 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 148 transitions, 429 flow [2023-08-26 21:02:23,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:23,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:23,527 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 21:02:23,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:02:23,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:02:23,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1991294795, now seen corresponding path program 1 times [2023-08-26 21:02:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:23,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182654292] [2023-08-26 21:02:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:02:23,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:02:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:02:23,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:02:23,555 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:02:23,555 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 45 remaining) [2023-08-26 21:02:23,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 45 remaining) [2023-08-26 21:02:23,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 45 remaining) [2023-08-26 21:02:23,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 45 remaining) [2023-08-26 21:02:23,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 45 remaining) [2023-08-26 21:02:23,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 45 remaining) [2023-08-26 21:02:23,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 45 remaining) [2023-08-26 21:02:23,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 45 remaining) [2023-08-26 21:02:23,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 45 remaining) [2023-08-26 21:02:23,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (35 of 45 remaining) [2023-08-26 21:02:23,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 45 remaining) [2023-08-26 21:02:23,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 45 remaining) [2023-08-26 21:02:23,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 45 remaining) [2023-08-26 21:02:23,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 45 remaining) [2023-08-26 21:02:23,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 45 remaining) [2023-08-26 21:02:23,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 45 remaining) [2023-08-26 21:02:23,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 45 remaining) [2023-08-26 21:02:23,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 45 remaining) [2023-08-26 21:02:23,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 45 remaining) [2023-08-26 21:02:23,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 45 remaining) [2023-08-26 21:02:23,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (24 of 45 remaining) [2023-08-26 21:02:23,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 45 remaining) [2023-08-26 21:02:23,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 45 remaining) [2023-08-26 21:02:23,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (13 of 45 remaining) [2023-08-26 21:02:23,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 45 remaining) [2023-08-26 21:02:23,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 45 remaining) [2023-08-26 21:02:23,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 45 remaining) [2023-08-26 21:02:23,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 45 remaining) [2023-08-26 21:02:23,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 45 remaining) [2023-08-26 21:02:23,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 45 remaining) [2023-08-26 21:02:23,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 45 remaining) [2023-08-26 21:02:23,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 45 remaining) [2023-08-26 21:02:23,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 45 remaining) [2023-08-26 21:02:23,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 45 remaining) [2023-08-26 21:02:23,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (2 of 45 remaining) [2023-08-26 21:02:23,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 45 remaining) [2023-08-26 21:02:23,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 45 remaining) [2023-08-26 21:02:23,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:02:23,561 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 21:02:23,562 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:02:23,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 21:02:23,626 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:02:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 431 transitions, 894 flow [2023-08-26 21:02:23,907 INFO L124 PetriNetUnfolderBase]: 41/477 cut-off events. [2023-08-26 21:02:23,908 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 21:02:23,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 477 events. 41/477 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1709 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 404. Up to 10 conditions per place. [2023-08-26 21:02:23,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 403 places, 431 transitions, 894 flow [2023-08-26 21:02:23,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 403 places, 431 transitions, 894 flow [2023-08-26 21:02:23,921 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:02:23,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 403 places, 431 transitions, 894 flow [2023-08-26 21:02:23,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 403 places, 431 transitions, 894 flow [2023-08-26 21:02:23,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 431 transitions, 894 flow [2023-08-26 21:02:24,004 INFO L124 PetriNetUnfolderBase]: 41/477 cut-off events. [2023-08-26 21:02:24,005 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 21:02:24,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 477 events. 41/477 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1709 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 404. Up to 10 conditions per place. [2023-08-26 21:02:24,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 126616 [2023-08-26 21:02:31,980 INFO L134 LiptonReduction]: Checked pairs total: 350097 [2023-08-26 21:02:31,980 INFO L136 LiptonReduction]: Total number of compositions: 333 [2023-08-26 21:02:31,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:02:31,983 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;@ec02b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:02:31,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-08-26 21:02:31,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:02:31,986 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-08-26 21:02:31,986 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 21:02:31,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:02:31,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:02:31,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-08-26 21:02:31,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:02:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1078188662, now seen corresponding path program 1 times [2023-08-26 21:02:31,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:02:31,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773112773] [2023-08-26 21:02:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:02:31,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:02:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:02:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:02:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:02:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773112773] [2023-08-26 21:02:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773112773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:02:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:02:32,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:02:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469097050] [2023-08-26 21:02:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:02:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:02:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:02:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:02:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:02:32,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 764 [2023-08-26 21:02:32,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 192 transitions, 416 flow. Second operand has 4 states, 4 states have (on average 361.5) internal successors, (1446), 4 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:02:32,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:02:32,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 764 [2023-08-26 21:02:32,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand