/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:14:50,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:14:50,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:14:50,935 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:14:50,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:14:50,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:14:50,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:14:50,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:14:50,958 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:14:50,958 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:14:50,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:14:50,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:14:50,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:14:50,959 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:14:50,960 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:50,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:50,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:14:50,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:14:50,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:14:50,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:14:50,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:14:50,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:14:50,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:14:50,961 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:14:51,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:14:51,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:14:51,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:14:51,207 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:14:51,207 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:14:51,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2025-04-13 19:14:52,493 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463b1ada8/f1735ebdf73a4082952538eb9ded5c30/FLAG9951ec6e4 [2025-04-13 19:14:52,777 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:14:52,778 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2025-04-13 19:14:52,794 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463b1ada8/f1735ebdf73a4082952538eb9ded5c30/FLAG9951ec6e4 [2025-04-13 19:14:53,696 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/463b1ada8/f1735ebdf73a4082952538eb9ded5c30 [2025-04-13 19:14:53,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:14:53,699 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:14:53,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:14:53,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:14:53,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:14:53,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:14:53" (1/1) ... [2025-04-13 19:14:53,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a641fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:53, skipping insertion in model container [2025-04-13 19:14:53,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:14:53" (1/1) ... [2025-04-13 19:14:53,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:14:54,028 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2025-04-13 19:14:54,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:14:54,041 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:14:54,081 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2025-04-13 19:14:54,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:14:54,103 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:14:54,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54 WrapperNode [2025-04-13 19:14:54,103 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:14:54,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:14:54,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:14:54,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:14:54,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,133 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2025-04-13 19:14:54,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:14:54,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:14:54,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:14:54,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:14:54,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,162 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 19:14:54,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,169 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:14:54,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:14:54,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:14:54,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:14:54,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (1/1) ... [2025-04-13 19:14:54,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:54,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:14:54,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 19:14:54,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 19:14:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 19:14:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 19:14:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 19:14:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 19:14:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:14:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:14:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:14:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:14:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:14:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:14:54,233 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:14:54,313 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:14:54,315 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:14:54,407 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:14:54,408 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:14:54,408 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:14:54,483 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:14:54,486 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:14:54,490 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:14:54,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:14:54 BoogieIcfgContainer [2025-04-13 19:14:54,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:14:54,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:14:54,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:14:54,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:14:54,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:14:53" (1/3) ... [2025-04-13 19:14:54,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98014db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:14:54, skipping insertion in model container [2025-04-13 19:14:54,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:54" (2/3) ... [2025-04-13 19:14:54,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98014db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:14:54, skipping insertion in model container [2025-04-13 19:14:54,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:14:54" (3/3) ... [2025-04-13 19:14:54,498 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2025-04-13 19:14:54,509 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:14:54,510 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longer-1.i that has 3 procedures, 18 locations, 19 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-13 19:14:54,511 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:14:54,540 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:14:54,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 21 transitions, 50 flow [2025-04-13 19:14:54,584 INFO L116 PetriNetUnfolderBase]: 4/19 cut-off events. [2025-04-13 19:14:54,587 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:14:54,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 19 events. 4/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2025-04-13 19:14:54,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 21 transitions, 50 flow [2025-04-13 19:14:54,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 19 transitions, 44 flow [2025-04-13 19:14:54,598 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:14:54,606 INFO L340 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ada78d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:14:54,606 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 19:14:54,610 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:14:54,610 INFO L116 PetriNetUnfolderBase]: 4/17 cut-off events. [2025-04-13 19:14:54,610 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:14:54,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:54,611 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:54,611 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:54,618 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:54,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1193666932, now seen corresponding path program 1 times [2025-04-13 19:14:54,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:54,625 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977070903] [2025-04-13 19:14:54,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:54,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:14:54,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:14:54,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:54,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:54,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:54,981 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977070903] [2025-04-13 19:14:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977070903] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:54,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:54,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:14:54,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747634280] [2025-04-13 19:14:54,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:54,987 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:14:54,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:55,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:14:55,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:14:55,020 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:55,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2025-04-13 19:14:55,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:55,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:55,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:55,211 INFO L116 PetriNetUnfolderBase]: 237/370 cut-off events. [2025-04-13 19:14:55,211 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:14:55,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 370 events. 237/370 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1115 event pairs, 45 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 744. Up to 233 conditions per place. [2025-04-13 19:14:55,214 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 25 selfloop transitions, 4 changer transitions 17/46 dead transitions. [2025-04-13 19:14:55,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 46 transitions, 190 flow [2025-04-13 19:14:55,215 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:14:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:14:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2025-04-13 19:14:55,222 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2025-04-13 19:14:55,223 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 44 flow. Second operand 6 states and 68 transitions. [2025-04-13 19:14:55,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 46 transitions, 190 flow [2025-04-13 19:14:55,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:14:55,230 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 65 flow [2025-04-13 19:14:55,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2025-04-13 19:14:55,233 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2025-04-13 19:14:55,233 INFO L485 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 65 flow [2025-04-13 19:14:55,233 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2025-04-13 19:14:55,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:55,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:55,234 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:14:55,234 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:55,234 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:55,234 INFO L85 PathProgramCache]: Analyzing trace with hash -344557750, now seen corresponding path program 1 times [2025-04-13 19:14:55,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:55,234 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79885965] [2025-04-13 19:14:55,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:55,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:55,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:14:55,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:14:55,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:55,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:55,355 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79885965] [2025-04-13 19:14:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79885965] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:55,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:14:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292551772] [2025-04-13 19:14:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:55,356 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:14:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:55,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:14:55,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:14:55,371 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:55,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 65 flow. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-04-13 19:14:55,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:55,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:55,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:55,552 INFO L116 PetriNetUnfolderBase]: 295/480 cut-off events. [2025-04-13 19:14:55,552 INFO L117 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2025-04-13 19:14:55,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 480 events. 295/480 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1657 event pairs, 41 based on Foata normal form. 24/418 useless extension candidates. Maximal degree in co-relation 1169. Up to 219 conditions per place. [2025-04-13 19:14:55,555 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 43 selfloop transitions, 9 changer transitions 19/71 dead transitions. [2025-04-13 19:14:55,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 71 transitions, 357 flow [2025-04-13 19:14:55,556 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 19:14:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 19:14:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-04-13 19:14:55,557 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2025-04-13 19:14:55,557 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 65 flow. Second operand 9 states and 86 transitions. [2025-04-13 19:14:55,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 71 transitions, 357 flow [2025-04-13 19:14:55,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 71 transitions, 341 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-04-13 19:14:55,560 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 150 flow [2025-04-13 19:14:55,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=150, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2025-04-13 19:14:55,560 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2025-04-13 19:14:55,561 INFO L485 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 150 flow [2025-04-13 19:14:55,561 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-04-13 19:14:55,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:55,561 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:55,561 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:14:55,561 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:55,561 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -344096470, now seen corresponding path program 2 times [2025-04-13 19:14:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:55,562 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557434257] [2025-04-13 19:14:55,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:14:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:55,567 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:14:55,570 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:14:55,570 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:14:55,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:55,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:55,679 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557434257] [2025-04-13 19:14:55,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557434257] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:55,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:55,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:14:55,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510077238] [2025-04-13 19:14:55,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:55,680 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:14:55,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:55,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:14:55,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:14:55,693 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:55,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-04-13 19:14:55,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:55,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:55,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:55,858 INFO L116 PetriNetUnfolderBase]: 256/429 cut-off events. [2025-04-13 19:14:55,859 INFO L117 PetriNetUnfolderBase]: For 744/744 co-relation queries the response was YES. [2025-04-13 19:14:55,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 429 events. 256/429 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1514 event pairs, 41 based on Foata normal form. 39/386 useless extension candidates. Maximal degree in co-relation 1329. Up to 208 conditions per place. [2025-04-13 19:14:55,861 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 38 selfloop transitions, 9 changer transitions 25/72 dead transitions. [2025-04-13 19:14:55,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 478 flow [2025-04-13 19:14:55,863 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 19:14:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 19:14:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2025-04-13 19:14:55,864 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2025-04-13 19:14:55,864 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 150 flow. Second operand 8 states and 76 transitions. [2025-04-13 19:14:55,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 478 flow [2025-04-13 19:14:55,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 470 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-04-13 19:14:55,868 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 204 flow [2025-04-13 19:14:55,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=204, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2025-04-13 19:14:55,868 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 24 predicate places. [2025-04-13 19:14:55,868 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 204 flow [2025-04-13 19:14:55,868 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2025-04-13 19:14:55,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:55,869 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:55,869 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:14:55,869 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:55,869 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 255482424, now seen corresponding path program 1 times [2025-04-13 19:14:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:55,869 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028004210] [2025-04-13 19:14:55,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:55,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 19:14:55,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 19:14:55,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:55,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:55,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:55,995 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028004210] [2025-04-13 19:14:55,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028004210] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:55,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:55,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:14:55,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920647673] [2025-04-13 19:14:55,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:55,995 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 19:14:55,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:55,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 19:14:55,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-13 19:14:56,003 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:56,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2025-04-13 19:14:56,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:56,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:56,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:56,175 INFO L116 PetriNetUnfolderBase]: 289/483 cut-off events. [2025-04-13 19:14:56,175 INFO L117 PetriNetUnfolderBase]: For 1379/1379 co-relation queries the response was YES. [2025-04-13 19:14:56,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 483 events. 289/483 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1764 event pairs, 57 based on Foata normal form. 18/403 useless extension candidates. Maximal degree in co-relation 1656. Up to 225 conditions per place. [2025-04-13 19:14:56,179 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 43 selfloop transitions, 16 changer transitions 17/76 dead transitions. [2025-04-13 19:14:56,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 575 flow [2025-04-13 19:14:56,179 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 19:14:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 19:14:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2025-04-13 19:14:56,180 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2025-04-13 19:14:56,180 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 204 flow. Second operand 9 states and 82 transitions. [2025-04-13 19:14:56,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 575 flow [2025-04-13 19:14:56,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 76 transitions, 505 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-04-13 19:14:56,185 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 291 flow [2025-04-13 19:14:56,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=291, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2025-04-13 19:14:56,186 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 27 predicate places. [2025-04-13 19:14:56,186 INFO L485 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 291 flow [2025-04-13 19:14:56,186 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2025-04-13 19:14:56,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:56,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:56,186 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:14:56,186 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:56,187 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash 250552494, now seen corresponding path program 2 times [2025-04-13 19:14:56,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:56,187 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255819425] [2025-04-13 19:14:56,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:14:56,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:56,191 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-04-13 19:14:56,194 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 19:14:56,194 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:14:56,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:56,281 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255819425] [2025-04-13 19:14:56,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255819425] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:56,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:56,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:14:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115276317] [2025-04-13 19:14:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:56,281 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 19:14:56,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:56,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 19:14:56,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-13 19:14:56,290 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:56,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2025-04-13 19:14:56,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:56,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:56,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:56,479 INFO L116 PetriNetUnfolderBase]: 460/762 cut-off events. [2025-04-13 19:14:56,479 INFO L117 PetriNetUnfolderBase]: For 2623/2623 co-relation queries the response was YES. [2025-04-13 19:14:56,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2762 conditions, 762 events. 460/762 cut-off events. For 2623/2623 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3012 event pairs, 49 based on Foata normal form. 27/619 useless extension candidates. Maximal degree in co-relation 2735. Up to 256 conditions per place. [2025-04-13 19:14:56,483 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 57 selfloop transitions, 22 changer transitions 21/100 dead transitions. [2025-04-13 19:14:56,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 779 flow [2025-04-13 19:14:56,485 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 19:14:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-13 19:14:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2025-04-13 19:14:56,487 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4588744588744589 [2025-04-13 19:14:56,488 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 291 flow. Second operand 11 states and 106 transitions. [2025-04-13 19:14:56,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 779 flow [2025-04-13 19:14:56,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 719 flow, removed 26 selfloop flow, removed 3 redundant places. [2025-04-13 19:14:56,498 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 401 flow [2025-04-13 19:14:56,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=401, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2025-04-13 19:14:56,499 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2025-04-13 19:14:56,499 INFO L485 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 401 flow [2025-04-13 19:14:56,499 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2025-04-13 19:14:56,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:56,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:56,499 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:14:56,499 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:56,500 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -651136364, now seen corresponding path program 3 times [2025-04-13 19:14:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:56,500 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470832731] [2025-04-13 19:14:56,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:14:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:56,510 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 12 statements into 1 equivalence classes. [2025-04-13 19:14:56,512 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 19:14:56,514 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 19:14:56,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:56,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:56,610 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470832731] [2025-04-13 19:14:56,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470832731] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:56,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:56,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:14:56,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303870773] [2025-04-13 19:14:56,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:56,610 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 19:14:56,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:56,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 19:14:56,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 19:14:56,618 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:56,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2025-04-13 19:14:56,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:56,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:56,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:56,816 INFO L116 PetriNetUnfolderBase]: 433/726 cut-off events. [2025-04-13 19:14:56,816 INFO L117 PetriNetUnfolderBase]: For 4462/4462 co-relation queries the response was YES. [2025-04-13 19:14:56,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 726 events. 433/726 cut-off events. For 4462/4462 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2895 event pairs, 37 based on Foata normal form. 45/607 useless extension candidates. Maximal degree in co-relation 3034. Up to 157 conditions per place. [2025-04-13 19:14:56,820 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 45 selfloop transitions, 27 changer transitions 31/103 dead transitions. [2025-04-13 19:14:56,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 985 flow [2025-04-13 19:14:56,821 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 19:14:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-13 19:14:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2025-04-13 19:14:56,823 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2025-04-13 19:14:56,823 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 401 flow. Second operand 11 states and 103 transitions. [2025-04-13 19:14:56,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 985 flow [2025-04-13 19:14:56,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 917 flow, removed 24 selfloop flow, removed 5 redundant places. [2025-04-13 19:14:56,833 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 508 flow [2025-04-13 19:14:56,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=508, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2025-04-13 19:14:56,834 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 47 predicate places. [2025-04-13 19:14:56,835 INFO L485 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 508 flow [2025-04-13 19:14:56,835 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2025-04-13 19:14:56,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:56,835 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:56,835 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:14:56,835 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:56,836 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -450343527, now seen corresponding path program 1 times [2025-04-13 19:14:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:56,836 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910148470] [2025-04-13 19:14:56,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:56,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:14:56,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:14:56,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:56,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:56,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:56,941 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910148470] [2025-04-13 19:14:56,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910148470] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:14:56,942 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149814258] [2025-04-13 19:14:56,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:56,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:14:56,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:14:56,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:14:56,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 19:14:56,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 19:14:56,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:14:56,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:56,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:56,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-13 19:14:56,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:14:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:57,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:14:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:57,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149814258] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:14:57,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:14:57,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-04-13 19:14:57,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780188054] [2025-04-13 19:14:57,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:14:57,174 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 19:14:57,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:57,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 19:14:57,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-04-13 19:14:57,184 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:57,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 508 flow. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 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) [2025-04-13 19:14:57,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:57,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:57,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:57,556 INFO L116 PetriNetUnfolderBase]: 541/906 cut-off events. [2025-04-13 19:14:57,556 INFO L117 PetriNetUnfolderBase]: For 9542/9542 co-relation queries the response was YES. [2025-04-13 19:14:57,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 906 events. 541/906 cut-off events. For 9542/9542 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3411 event pairs, 131 based on Foata normal form. 63/757 useless extension candidates. Maximal degree in co-relation 4356. Up to 489 conditions per place. [2025-04-13 19:14:57,561 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 67 selfloop transitions, 19 changer transitions 64/150 dead transitions. [2025-04-13 19:14:57,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 1572 flow [2025-04-13 19:14:57,561 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 19:14:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-13 19:14:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 171 transitions. [2025-04-13 19:14:57,562 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-04-13 19:14:57,562 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 508 flow. Second operand 19 states and 171 transitions. [2025-04-13 19:14:57,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 1572 flow [2025-04-13 19:14:57,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 150 transitions, 1471 flow, removed 33 selfloop flow, removed 8 redundant places. [2025-04-13 19:14:57,575 INFO L231 Difference]: Finished difference. Result has 89 places, 53 transitions, 640 flow [2025-04-13 19:14:57,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=640, PETRI_PLACES=89, PETRI_TRANSITIONS=53} [2025-04-13 19:14:57,577 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 67 predicate places. [2025-04-13 19:14:57,577 INFO L485 AbstractCegarLoop]: Abstraction has has 89 places, 53 transitions, 640 flow [2025-04-13 19:14:57,578 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 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) [2025-04-13 19:14:57,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:57,578 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:57,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 19:14:57,778 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:14:57,779 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:57,779 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash 887573805, now seen corresponding path program 2 times [2025-04-13 19:14:57,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:57,779 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826557591] [2025-04-13 19:14:57,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:14:57,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:57,785 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 19:14:57,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:14:57,790 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 19:14:57,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:57,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:57,876 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826557591] [2025-04-13 19:14:57,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826557591] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:14:57,876 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718540892] [2025-04-13 19:14:57,876 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:14:57,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:14:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:14:57,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:14:57,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 19:14:57,913 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 19:14:57,923 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 19:14:57,923 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 19:14:57,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:57,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-13 19:14:57,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:14:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:57,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:14:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718540892] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:14:58,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:14:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-04-13 19:14:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638468479] [2025-04-13 19:14:58,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:14:58,056 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 19:14:58,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:58,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 19:14:58,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-04-13 19:14:58,062 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:58,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 53 transitions, 640 flow. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 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) [2025-04-13 19:14:58,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:58,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:58,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:58,634 INFO L116 PetriNetUnfolderBase]: 829/1383 cut-off events. [2025-04-13 19:14:58,634 INFO L117 PetriNetUnfolderBase]: For 34295/34295 co-relation queries the response was YES. [2025-04-13 19:14:58,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 1383 events. 829/1383 cut-off events. For 34295/34295 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5904 event pairs, 57 based on Foata normal form. 72/1117 useless extension candidates. Maximal degree in co-relation 8761. Up to 306 conditions per place. [2025-04-13 19:14:58,644 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 88 selfloop transitions, 49 changer transitions 74/211 dead transitions. [2025-04-13 19:14:58,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 211 transitions, 2822 flow [2025-04-13 19:14:58,644 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 19:14:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-04-13 19:14:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 247 transitions. [2025-04-13 19:14:58,645 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43562610229276894 [2025-04-13 19:14:58,645 INFO L175 Difference]: Start difference. First operand has 89 places, 53 transitions, 640 flow. Second operand 27 states and 247 transitions. [2025-04-13 19:14:58,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 211 transitions, 2822 flow [2025-04-13 19:14:58,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 211 transitions, 2275 flow, removed 261 selfloop flow, removed 12 redundant places. [2025-04-13 19:14:58,669 INFO L231 Difference]: Finished difference. Result has 115 places, 69 transitions, 1045 flow [2025-04-13 19:14:58,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1045, PETRI_PLACES=115, PETRI_TRANSITIONS=69} [2025-04-13 19:14:58,670 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 93 predicate places. [2025-04-13 19:14:58,670 INFO L485 AbstractCegarLoop]: Abstraction has has 115 places, 69 transitions, 1045 flow [2025-04-13 19:14:58,670 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 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) [2025-04-13 19:14:58,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:58,670 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:58,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-13 19:14:58,874 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-04-13 19:14:58,874 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:58,874 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:58,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2129966344, now seen corresponding path program 1 times [2025-04-13 19:14:58,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:58,875 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824777185] [2025-04-13 19:14:58,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:58,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:58,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 19:14:58,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 19:14:58,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:58,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:58,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:58,970 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824777185] [2025-04-13 19:14:58,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824777185] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:14:58,970 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095422668] [2025-04-13 19:14:58,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:58,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:14:58,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:14:58,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:14:58,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 19:14:59,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 19:14:59,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 19:14:59,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:59,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:59,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 19:14:59,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:14:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:59,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:14:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:14:59,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095422668] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:14:59,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:14:59,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 19:14:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947886576] [2025-04-13 19:14:59,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:14:59,133 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 19:14:59,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:59,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 19:14:59,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-04-13 19:14:59,147 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:14:59,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 69 transitions, 1045 flow. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 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) [2025-04-13 19:14:59,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:59,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:14:59,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:59,763 INFO L116 PetriNetUnfolderBase]: 1063/1788 cut-off events. [2025-04-13 19:14:59,763 INFO L117 PetriNetUnfolderBase]: For 81651/81651 co-relation queries the response was YES. [2025-04-13 19:14:59,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14075 conditions, 1788 events. 1063/1788 cut-off events. For 81651/81651 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8178 event pairs, 131 based on Foata normal form. 63/1399 useless extension candidates. Maximal degree in co-relation 14016. Up to 490 conditions per place. [2025-04-13 19:14:59,780 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 99 selfloop transitions, 53 changer transitions 65/217 dead transitions. [2025-04-13 19:14:59,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 217 transitions, 3653 flow [2025-04-13 19:14:59,781 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 19:14:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-04-13 19:14:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 232 transitions. [2025-04-13 19:14:59,782 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2025-04-13 19:14:59,782 INFO L175 Difference]: Start difference. First operand has 115 places, 69 transitions, 1045 flow. Second operand 25 states and 232 transitions. [2025-04-13 19:14:59,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 217 transitions, 3653 flow [2025-04-13 19:14:59,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 217 transitions, 3070 flow, removed 275 selfloop flow, removed 13 redundant places. [2025-04-13 19:14:59,852 INFO L231 Difference]: Finished difference. Result has 133 places, 80 transitions, 1333 flow [2025-04-13 19:14:59,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1333, PETRI_PLACES=133, PETRI_TRANSITIONS=80} [2025-04-13 19:14:59,853 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 111 predicate places. [2025-04-13 19:14:59,853 INFO L485 AbstractCegarLoop]: Abstraction has has 133 places, 80 transitions, 1333 flow [2025-04-13 19:14:59,853 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 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) [2025-04-13 19:14:59,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:59,853 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:59,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-13 19:15:00,053 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:00,054 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:15:00,054 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash -866930206, now seen corresponding path program 2 times [2025-04-13 19:15:00,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:00,055 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557623635] [2025-04-13 19:15:00,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:15:00,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:00,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 19:15:00,064 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 19:15:00,064 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 19:15:00,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:00,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:15:00,151 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557623635] [2025-04-13 19:15:00,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557623635] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:15:00,152 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314703790] [2025-04-13 19:15:00,152 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:15:00,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:00,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:00,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:15:00,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 19:15:00,187 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 19:15:00,196 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 19:15:00,196 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 19:15:00,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:00,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 19:15:00,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:15:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:00,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:15:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:00,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314703790] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:15:00,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:15:00,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 19:15:00,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944851298] [2025-04-13 19:15:00,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:15:00,322 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 19:15:00,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:15:00,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 19:15:00,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-04-13 19:15:00,341 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:15:00,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 80 transitions, 1333 flow. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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) [2025-04-13 19:15:00,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:15:00,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:15:00,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:15:01,009 INFO L116 PetriNetUnfolderBase]: 1180/2022 cut-off events. [2025-04-13 19:15:01,009 INFO L117 PetriNetUnfolderBase]: For 131079/131079 co-relation queries the response was YES. [2025-04-13 19:15:01,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17089 conditions, 2022 events. 1180/2022 cut-off events. For 131079/131079 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9496 event pairs, 25 based on Foata normal form. 135/1627 useless extension candidates. Maximal degree in co-relation 17024. Up to 492 conditions per place. [2025-04-13 19:15:01,024 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 92 selfloop transitions, 80 changer transitions 96/268 dead transitions. [2025-04-13 19:15:01,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 268 transitions, 5215 flow [2025-04-13 19:15:01,025 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 19:15:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-04-13 19:15:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 273 transitions. [2025-04-13 19:15:01,026 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-04-13 19:15:01,026 INFO L175 Difference]: Start difference. First operand has 133 places, 80 transitions, 1333 flow. Second operand 30 states and 273 transitions. [2025-04-13 19:15:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 268 transitions, 5215 flow [2025-04-13 19:15:01,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 268 transitions, 4441 flow, removed 349 selfloop flow, removed 18 redundant places. [2025-04-13 19:15:01,134 INFO L231 Difference]: Finished difference. Result has 156 places, 101 transitions, 1966 flow [2025-04-13 19:15:01,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1966, PETRI_PLACES=156, PETRI_TRANSITIONS=101} [2025-04-13 19:15:01,135 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 134 predicate places. [2025-04-13 19:15:01,135 INFO L485 AbstractCegarLoop]: Abstraction has has 156 places, 101 transitions, 1966 flow [2025-04-13 19:15:01,135 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 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) [2025-04-13 19:15:01,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:15:01,135 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:15:01,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 19:15:01,339 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:01,339 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:15:01,339 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2000096558, now seen corresponding path program 3 times [2025-04-13 19:15:01,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:01,340 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817254342] [2025-04-13 19:15:01,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:15:01,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:01,350 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-04-13 19:15:01,355 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 19:15:01,355 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 19:15:01,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:01,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:15:01,489 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817254342] [2025-04-13 19:15:01,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817254342] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:15:01,489 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836487984] [2025-04-13 19:15:01,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:15:01,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:01,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:01,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:15:01,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-13 19:15:01,520 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-04-13 19:15:01,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 19:15:01,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 19:15:01,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:01,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 19:15:01,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:15:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:01,586 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:15:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836487984] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:15:01,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:15:01,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-04-13 19:15:01,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295985209] [2025-04-13 19:15:01,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:15:01,702 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 19:15:01,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:15:01,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 19:15:01,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2025-04-13 19:15:01,722 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:15:01,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 101 transitions, 1966 flow. Second operand has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 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) [2025-04-13 19:15:01,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:15:01,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:15:01,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:15:02,824 INFO L116 PetriNetUnfolderBase]: 1648/2751 cut-off events. [2025-04-13 19:15:02,825 INFO L117 PetriNetUnfolderBase]: For 248517/248517 co-relation queries the response was YES. [2025-04-13 19:15:02,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26686 conditions, 2751 events. 1648/2751 cut-off events. For 248517/248517 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12261 event pairs, 19 based on Foata normal form. 90/2137 useless extension candidates. Maximal degree in co-relation 26611. Up to 670 conditions per place. [2025-04-13 19:15:02,845 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 142 selfloop transitions, 114 changer transitions 129/385 dead transitions. [2025-04-13 19:15:02,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 385 transitions, 8392 flow [2025-04-13 19:15:02,846 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-13 19:15:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-04-13 19:15:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 421 transitions. [2025-04-13 19:15:02,847 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4358178053830228 [2025-04-13 19:15:02,847 INFO L175 Difference]: Start difference. First operand has 156 places, 101 transitions, 1966 flow. Second operand 46 states and 421 transitions. [2025-04-13 19:15:02,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 385 transitions, 8392 flow [2025-04-13 19:15:03,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 385 transitions, 7077 flow, removed 626 selfloop flow, removed 20 redundant places. [2025-04-13 19:15:03,045 INFO L231 Difference]: Finished difference. Result has 201 places, 135 transitions, 3061 flow [2025-04-13 19:15:03,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3061, PETRI_PLACES=201, PETRI_TRANSITIONS=135} [2025-04-13 19:15:03,045 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 179 predicate places. [2025-04-13 19:15:03,045 INFO L485 AbstractCegarLoop]: Abstraction has has 201 places, 135 transitions, 3061 flow [2025-04-13 19:15:03,046 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 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) [2025-04-13 19:15:03,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:15:03,046 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:15:03,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 19:15:03,246 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-04-13 19:15:03,246 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:15:03,247 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1630792290, now seen corresponding path program 4 times [2025-04-13 19:15:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:03,247 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227739226] [2025-04-13 19:15:03,247 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 19:15:03,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:03,254 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-04-13 19:15:03,263 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 19:15:03,263 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 19:15:03,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:03,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:15:03,564 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227739226] [2025-04-13 19:15:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227739226] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:15:03,564 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434050933] [2025-04-13 19:15:03,564 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 19:15:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:03,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:03,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:15:03,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-13 19:15:03,598 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-04-13 19:15:03,611 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 19:15:03,611 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 19:15:03,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:03,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 19:15:03,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:15:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:03,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:15:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434050933] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:15:03,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:15:03,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 25 [2025-04-13 19:15:03,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700641698] [2025-04-13 19:15:03,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:15:03,925 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 19:15:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:15:03,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 19:15:03,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2025-04-13 19:15:03,935 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:15:03,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 135 transitions, 3061 flow. Second operand has 27 states, 27 states have (on average 4.185185185185185) internal successors, (113), 27 states have internal predecessors, (113), 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) [2025-04-13 19:15:03,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:15:03,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:15:03,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:15:04,999 INFO L116 PetriNetUnfolderBase]: 1900/3264 cut-off events. [2025-04-13 19:15:05,000 INFO L117 PetriNetUnfolderBase]: For 454173/454173 co-relation queries the response was YES. [2025-04-13 19:15:05,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36477 conditions, 3264 events. 1900/3264 cut-off events. For 454173/454173 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 15281 event pairs, 399 based on Foata normal form. 81/2467 useless extension candidates. Maximal degree in co-relation 36385. Up to 1483 conditions per place. [2025-04-13 19:15:05,031 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 163 selfloop transitions, 89 changer transitions 113/365 dead transitions. [2025-04-13 19:15:05,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 365 transitions, 9951 flow [2025-04-13 19:15:05,032 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 19:15:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-04-13 19:15:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 334 transitions. [2025-04-13 19:15:05,033 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.41854636591478694 [2025-04-13 19:15:05,033 INFO L175 Difference]: Start difference. First operand has 201 places, 135 transitions, 3061 flow. Second operand 38 states and 334 transitions. [2025-04-13 19:15:05,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 365 transitions, 9951 flow [2025-04-13 19:15:05,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 365 transitions, 7137 flow, removed 1365 selfloop flow, removed 29 redundant places. [2025-04-13 19:15:05,599 INFO L231 Difference]: Finished difference. Result has 218 places, 165 transitions, 3285 flow [2025-04-13 19:15:05,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3285, PETRI_PLACES=218, PETRI_TRANSITIONS=165} [2025-04-13 19:15:05,600 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 196 predicate places. [2025-04-13 19:15:05,600 INFO L485 AbstractCegarLoop]: Abstraction has has 218 places, 165 transitions, 3285 flow [2025-04-13 19:15:05,600 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.185185185185185) internal successors, (113), 27 states have internal predecessors, (113), 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) [2025-04-13 19:15:05,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:15:05,600 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:15:05,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-13 19:15:05,801 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:05,801 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:15:05,801 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash 978641650, now seen corresponding path program 5 times [2025-04-13 19:15:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:05,802 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403448251] [2025-04-13 19:15:05,802 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 19:15:05,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:05,807 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 8 equivalence classes. [2025-04-13 19:15:05,813 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 19:15:05,813 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 19:15:05,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:15:06,077 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403448251] [2025-04-13 19:15:06,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403448251] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:15:06,077 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743599810] [2025-04-13 19:15:06,077 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 19:15:06,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:06,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:06,079 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:15:06,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-13 19:15:06,111 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 8 equivalence classes. [2025-04-13 19:15:06,125 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 19:15:06,125 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-04-13 19:15:06,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:06,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 19:15:06,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:15:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 1 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:06,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:15:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:06,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743599810] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:15:06,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:15:06,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 29 [2025-04-13 19:15:06,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759887331] [2025-04-13 19:15:06,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:15:06,454 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 19:15:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:15:06,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 19:15:06,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2025-04-13 19:15:06,476 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:15:06,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 165 transitions, 3285 flow. Second operand has 31 states, 31 states have (on average 4.225806451612903) internal successors, (131), 31 states have internal predecessors, (131), 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) [2025-04-13 19:15:06,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:15:06,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:15:06,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:15:07,768 INFO L116 PetriNetUnfolderBase]: 2413/4272 cut-off events. [2025-04-13 19:15:07,769 INFO L117 PetriNetUnfolderBase]: For 528270/528270 co-relation queries the response was YES. [2025-04-13 19:15:07,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43511 conditions, 4272 events. 2413/4272 cut-off events. For 528270/528270 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 21701 event pairs, 181 based on Foata normal form. 81/3145 useless extension candidates. Maximal degree in co-relation 43418. Up to 1164 conditions per place. [2025-04-13 19:15:07,801 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 156 selfloop transitions, 177 changer transitions 123/456 dead transitions. [2025-04-13 19:15:07,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 456 transitions, 10762 flow [2025-04-13 19:15:07,801 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-13 19:15:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-04-13 19:15:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 397 transitions. [2025-04-13 19:15:07,806 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4201058201058201 [2025-04-13 19:15:07,806 INFO L175 Difference]: Start difference. First operand has 218 places, 165 transitions, 3285 flow. Second operand 45 states and 397 transitions. [2025-04-13 19:15:07,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 456 transitions, 10762 flow [2025-04-13 19:15:08,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 456 transitions, 9605 flow, removed 545 selfloop flow, removed 22 redundant places. [2025-04-13 19:15:08,744 INFO L231 Difference]: Finished difference. Result has 251 places, 222 transitions, 4923 flow [2025-04-13 19:15:08,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4923, PETRI_PLACES=251, PETRI_TRANSITIONS=222} [2025-04-13 19:15:08,745 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 229 predicate places. [2025-04-13 19:15:08,745 INFO L485 AbstractCegarLoop]: Abstraction has has 251 places, 222 transitions, 4923 flow [2025-04-13 19:15:08,745 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.225806451612903) internal successors, (131), 31 states have internal predecessors, (131), 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) [2025-04-13 19:15:08,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:15:08,745 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:15:08,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-13 19:15:08,946 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:08,946 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:15:08,946 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash -564469166, now seen corresponding path program 6 times [2025-04-13 19:15:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:08,947 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311843184] [2025-04-13 19:15:08,947 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 19:15:08,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:08,952 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 10 equivalence classes. [2025-04-13 19:15:08,966 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 19:15:08,966 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-04-13 19:15:08,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:09,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:15:09,203 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311843184] [2025-04-13 19:15:09,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311843184] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:15:09,203 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348058259] [2025-04-13 19:15:09,203 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 19:15:09,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:09,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:09,205 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:15:09,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 19:15:09,235 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 10 equivalence classes. [2025-04-13 19:15:09,253 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 19:15:09,254 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-04-13 19:15:09,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:09,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 19:15:09,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:15:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:09,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:15:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348058259] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:15:09,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:15:09,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 29 [2025-04-13 19:15:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884436380] [2025-04-13 19:15:09,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:15:09,542 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 19:15:09,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:15:09,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 19:15:09,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2025-04-13 19:15:09,560 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:15:09,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 222 transitions, 4923 flow. Second operand has 31 states, 31 states have (on average 4.129032258064516) internal successors, (128), 31 states have internal predecessors, (128), 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) [2025-04-13 19:15:09,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:15:09,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:15:09,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:15:11,059 INFO L116 PetriNetUnfolderBase]: 3052/5352 cut-off events. [2025-04-13 19:15:11,059 INFO L117 PetriNetUnfolderBase]: For 879511/879511 co-relation queries the response was YES. [2025-04-13 19:15:11,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61487 conditions, 5352 events. 3052/5352 cut-off events. For 879511/879511 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 27312 event pairs, 25 based on Foata normal form. 81/3931 useless extension candidates. Maximal degree in co-relation 61384. Up to 1459 conditions per place. [2025-04-13 19:15:11,099 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 184 selfloop transitions, 230 changer transitions 119/533 dead transitions. [2025-04-13 19:15:11,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 533 transitions, 14037 flow [2025-04-13 19:15:11,101 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-04-13 19:15:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-04-13 19:15:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 453 transitions. [2025-04-13 19:15:11,102 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4402332361516035 [2025-04-13 19:15:11,102 INFO L175 Difference]: Start difference. First operand has 251 places, 222 transitions, 4923 flow. Second operand 49 states and 453 transitions. [2025-04-13 19:15:11,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 533 transitions, 14037 flow [2025-04-13 19:15:11,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 533 transitions, 12208 flow, removed 868 selfloop flow, removed 23 redundant places. [2025-04-13 19:15:11,995 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 6175 flow [2025-04-13 19:15:11,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4090, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=6175, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2025-04-13 19:15:11,996 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 267 predicate places. [2025-04-13 19:15:11,996 INFO L485 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 6175 flow [2025-04-13 19:15:11,996 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.129032258064516) internal successors, (128), 31 states have internal predecessors, (128), 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) [2025-04-13 19:15:11,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:15:11,996 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:15:12,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-13 19:15:12,198 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-13 19:15:12,198 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:15:12,198 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1929584662, now seen corresponding path program 7 times [2025-04-13 19:15:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:12,199 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989440672] [2025-04-13 19:15:12,199 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 19:15:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:12,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-04-13 19:15:12,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-04-13 19:15:12,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:15:12,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:12,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:15:12,406 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989440672] [2025-04-13 19:15:12,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989440672] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:15:12,406 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646677416] [2025-04-13 19:15:12,406 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 19:15:12,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:12,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:12,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:15:12,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 19:15:12,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-04-13 19:15:12,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-04-13 19:15:12,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:15:12,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:12,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 19:15:12,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:15:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:12,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:15:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:12,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646677416] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:15:12,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:15:12,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 25 [2025-04-13 19:15:12,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412451157] [2025-04-13 19:15:12,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:15:12,686 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 19:15:12,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:15:12,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 19:15:12,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2025-04-13 19:15:12,698 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:15:12,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 6175 flow. Second operand has 27 states, 27 states have (on average 4.185185185185185) internal successors, (113), 27 states have internal predecessors, (113), 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) [2025-04-13 19:15:12,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:15:12,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:15:12,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:15:14,497 INFO L116 PetriNetUnfolderBase]: 3061/5388 cut-off events. [2025-04-13 19:15:14,497 INFO L117 PetriNetUnfolderBase]: For 1094775/1094775 co-relation queries the response was YES. [2025-04-13 19:15:14,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65454 conditions, 5388 events. 3061/5388 cut-off events. For 1094775/1094775 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 27599 event pairs, 25 based on Foata normal form. 117/3985 useless extension candidates. Maximal degree in co-relation 65337. Up to 1452 conditions per place. [2025-04-13 19:15:14,549 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 176 selfloop transitions, 247 changer transitions 133/556 dead transitions. [2025-04-13 19:15:14,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 556 transitions, 15427 flow [2025-04-13 19:15:14,549 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-04-13 19:15:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2025-04-13 19:15:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 471 transitions. [2025-04-13 19:15:14,551 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43131868131868134 [2025-04-13 19:15:14,551 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 6175 flow. Second operand 52 states and 471 transitions. [2025-04-13 19:15:14,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 556 transitions, 15427 flow [2025-04-13 19:15:16,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 556 transitions, 13484 flow, removed 896 selfloop flow, removed 26 redundant places. [2025-04-13 19:15:16,618 INFO L231 Difference]: Finished difference. Result has 322 places, 271 transitions, 6711 flow [2025-04-13 19:15:16,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=5162, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=6711, PETRI_PLACES=322, PETRI_TRANSITIONS=271} [2025-04-13 19:15:16,619 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 300 predicate places. [2025-04-13 19:15:16,619 INFO L485 AbstractCegarLoop]: Abstraction has has 322 places, 271 transitions, 6711 flow [2025-04-13 19:15:16,619 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.185185185185185) internal successors, (113), 27 states have internal predecessors, (113), 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) [2025-04-13 19:15:16,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:15:16,619 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:15:16,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-13 19:15:16,820 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 19:15:16,820 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:15:16,821 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash -967155962, now seen corresponding path program 8 times [2025-04-13 19:15:16,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:16,821 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575823736] [2025-04-13 19:15:16,821 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:15:16,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:16,826 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-04-13 19:15:16,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 19:15:16,832 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 19:15:16,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:17,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:15:17,110 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575823736] [2025-04-13 19:15:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575823736] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:15:17,110 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061801648] [2025-04-13 19:15:17,110 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:15:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:17,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:15:17,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 19:15:17,145 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-04-13 19:15:17,166 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-04-13 19:15:17,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 19:15:17,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:17,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 19:15:17,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:15:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:17,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 19:15:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:15:17,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061801648] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 19:15:17,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 19:15:17,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2025-04-13 19:15:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632717712] [2025-04-13 19:15:17,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 19:15:17,547 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 19:15:17,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:15:17,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 19:15:17,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=1682, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 19:15:17,581 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2025-04-13 19:15:17,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 271 transitions, 6711 flow. Second operand has 47 states, 47 states have (on average 4.042553191489362) internal successors, (190), 47 states have internal predecessors, (190), 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) [2025-04-13 19:15:17,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:15:17,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2025-04-13 19:15:17,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:15:19,614 INFO L116 PetriNetUnfolderBase]: 3358/5901 cut-off events. [2025-04-13 19:15:19,615 INFO L117 PetriNetUnfolderBase]: For 1280768/1280768 co-relation queries the response was YES. [2025-04-13 19:15:19,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72883 conditions, 5901 events. 3358/5901 cut-off events. For 1280768/1280768 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 30558 event pairs, 79 based on Foata normal form. 36/4273 useless extension candidates. Maximal degree in co-relation 72759. Up to 1584 conditions per place. [2025-04-13 19:15:19,663 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 200 selfloop transitions, 270 changer transitions 111/581 dead transitions. [2025-04-13 19:15:19,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 581 transitions, 16035 flow [2025-04-13 19:15:19,663 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-04-13 19:15:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2025-04-13 19:15:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 469 transitions. [2025-04-13 19:15:19,664 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.42948717948717946 [2025-04-13 19:15:19,664 INFO L175 Difference]: Start difference. First operand has 322 places, 271 transitions, 6711 flow. Second operand 52 states and 469 transitions. [2025-04-13 19:15:19,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 581 transitions, 16035 flow [2025-04-13 19:15:21,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 581 transitions, 13927 flow, removed 853 selfloop flow, removed 42 redundant places. [2025-04-13 19:15:21,541 INFO L231 Difference]: Finished difference. Result has 336 places, 304 transitions, 7375 flow [2025-04-13 19:15:21,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=5495, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7375, PETRI_PLACES=336, PETRI_TRANSITIONS=304} [2025-04-13 19:15:21,541 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 314 predicate places. [2025-04-13 19:15:21,541 INFO L485 AbstractCegarLoop]: Abstraction has has 336 places, 304 transitions, 7375 flow [2025-04-13 19:15:21,541 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.042553191489362) internal successors, (190), 47 states have internal predecessors, (190), 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) [2025-04-13 19:15:21,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:15:21,542 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:15:21,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 19:15:21,742 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 19:15:21,742 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:15:21,743 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:21,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1236092069, now seen corresponding path program 9 times [2025-04-13 19:15:21,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:21,743 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118442861] [2025-04-13 19:15:21,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:15:21,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:21,747 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 20 equivalence classes. [2025-04-13 19:15:21,768 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 48 of 50 statements. [2025-04-13 19:15:21,769 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-04-13 19:15:21,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 244 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 19:15:21,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:15:21,938 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118442861] [2025-04-13 19:15:21,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118442861] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 19:15:21,939 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234809134] [2025-04-13 19:15:21,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:15:21,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 19:15:21,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:21,942 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 19:15:21,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 19:15:21,972 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 20 equivalence classes. [2025-04-13 19:15:21,992 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 48 of 50 statements. [2025-04-13 19:15:21,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-04-13 19:15:21,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:15:21,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 19:15:21,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 19:15:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-04-13 19:15:22,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-13 19:15:22,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234809134] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:15:22,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-13 19:15:22,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 13 [2025-04-13 19:15:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850714487] [2025-04-13 19:15:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:15:22,034 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 19:15:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:15:22,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 19:15:22,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2025-04-13 19:15:22,035 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 21 [2025-04-13 19:15:22,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 304 transitions, 7375 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 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) [2025-04-13 19:15:22,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:15:22,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 21 [2025-04-13 19:15:22,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:15:25,288 INFO L116 PetriNetUnfolderBase]: 8399/15742 cut-off events. [2025-04-13 19:15:25,288 INFO L117 PetriNetUnfolderBase]: For 3302037/3302620 co-relation queries the response was YES. [2025-04-13 19:15:25,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177123 conditions, 15742 events. 8399/15742 cut-off events. For 3302037/3302620 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 124778 event pairs, 647 based on Foata normal form. 170/11449 useless extension candidates. Maximal degree in co-relation 177002. Up to 4515 conditions per place. [2025-04-13 19:15:25,474 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 0 selfloop transitions, 0 changer transitions 364/364 dead transitions. [2025-04-13 19:15:25,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 364 transitions, 6904 flow [2025-04-13 19:15:25,475 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 19:15:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-13 19:15:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2025-04-13 19:15:25,476 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2025-04-13 19:15:25,476 INFO L175 Difference]: Start difference. First operand has 336 places, 304 transitions, 7375 flow. Second operand 12 states and 161 transitions. [2025-04-13 19:15:25,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 364 transitions, 6904 flow [2025-04-13 19:15:30,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 364 transitions, 5818 flow, removed 346 selfloop flow, removed 43 redundant places. [2025-04-13 19:15:30,187 INFO L231 Difference]: Finished difference. Result has 298 places, 0 transitions, 0 flow [2025-04-13 19:15:30,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=5468, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=298, PETRI_TRANSITIONS=0} [2025-04-13 19:15:30,188 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 276 predicate places. [2025-04-13 19:15:30,188 INFO L485 AbstractCegarLoop]: Abstraction has has 298 places, 0 transitions, 0 flow [2025-04-13 19:15:30,188 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 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) [2025-04-13 19:15:30,190 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 19:15:30,191 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 19:15:30,191 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 19:15:30,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-04-13 19:15:30,391 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-04-13 19:15:30,392 INFO L422 BasicCegarLoop]: Path program histogram: [9, 3, 2, 2, 1] [2025-04-13 19:15:30,394 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:15:30,394 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:15:30,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:15:30 BasicIcfg [2025-04-13 19:15:30,398 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:15:30,398 INFO L158 Benchmark]: Toolchain (without parser) took 36699.23ms. Allocated memory was 142.6MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 98.4MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2025-04-13 19:15:30,398 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:15:30,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.72ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 75.9MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 19:15:30,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.57ms. Allocated memory is still 142.6MB. Free memory was 75.9MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:15:30,399 INFO L158 Benchmark]: Boogie Preprocessor took 48.67ms. Allocated memory is still 142.6MB. Free memory was 73.9MB in the beginning and 72.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:15:30,399 INFO L158 Benchmark]: RCFGBuilder took 304.00ms. Allocated memory is still 142.6MB. Free memory was 72.4MB in the beginning and 52.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 19:15:30,399 INFO L158 Benchmark]: TraceAbstraction took 35905.68ms. Allocated memory was 142.6MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 51.5MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2025-04-13 19:15:30,400 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 403.72ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 75.9MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.57ms. Allocated memory is still 142.6MB. Free memory was 75.9MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.67ms. Allocated memory is still 142.6MB. Free memory was 73.9MB in the beginning and 72.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 304.00ms. Allocated memory is still 142.6MB. Free memory was 72.4MB in the beginning and 52.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 35905.68ms. Allocated memory was 142.6MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 51.5MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 33 edges, 3 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: 35.8s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 27.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5806 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5785 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 342 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6274 IncrementalHoareTripleChecker+Invalid, 6616 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 342 mSolverCounterUnsat, 12 mSDtfsCounter, 6274 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1111 GetRequests, 482 SyntacticMatches, 16 SemanticMatches, 613 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10049 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7375occurred in iteration=16, InterpolantAutomatonStates: 449, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 724 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 114 NumberOfCheckSat, 966 ConstructedInterpolants, 0 QuantifiedInterpolants, 3995 SizeOfPredicates, 110 NumberOfNonLiveVariables, 1403 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 38 InterpolantComputations, 7 PerfectInterpolantSequences, 534/2495 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:15:30,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...