/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:47:46,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:47:46,922 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 [2025-04-14 00:47:46,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:47:46,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:47:46,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:47:46,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:47:46,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:47:46,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:47:46,949 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:47:46,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:47:46,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:47:46,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:47:46,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:47:46,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:47:46,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:47:46,951 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:47:46,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:47:46,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:47:46,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:47:46,952 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:47:46,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:47:46,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:47:46,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:47:46,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:47:46,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:47:46,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:47:46,952 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:47:47,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:47:47,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:47:47,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:47:47,181 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:47:47,181 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:47:47,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2025-04-14 00:47:48,443 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c218e575/7ee7386cd7704551a9738fd7ea6d0b5b/FLAG962d7e7b6 [2025-04-14 00:47:48,652 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:47:48,653 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2025-04-14 00:47:48,680 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c218e575/7ee7386cd7704551a9738fd7ea6d0b5b/FLAG962d7e7b6 [2025-04-14 00:47:49,442 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c218e575/7ee7386cd7704551a9738fd7ea6d0b5b [2025-04-14 00:47:49,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:47:49,446 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:47:49,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:47:49,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:47:49,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:47:49,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178f3bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49, skipping insertion in model container [2025-04-14 00:47:49,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:47:49,625 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c[2155,2168] [2025-04-14 00:47:49,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:47:49,634 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:47:49,662 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c[2155,2168] [2025-04-14 00:47:49,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:47:49,673 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:47:49,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49 WrapperNode [2025-04-14 00:47:49,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:47:49,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:47:49,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:47:49,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:47:49,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,700 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2025-04-14 00:47:49,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:47:49,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:47:49,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:47:49,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:47:49,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,724 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]. [2025-04-14 00:47:49,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,728 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:47:49,736 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:47:49,736 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:47:49,736 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:47:49,737 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (1/1) ... [2025-04-14 00:47:49,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:47:49,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:47:49,770 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) [2025-04-14 00:47:49,773 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 [2025-04-14 00:47:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:47:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:47:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:47:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:47:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:47:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 00:47:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 00:47:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:47:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:47:49,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:47:49,792 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:47:49,855 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:47:49,856 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:47:49,960 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:47:49,961 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:47:49,961 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:47:50,087 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:47:50,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:47:50 BoogieIcfgContainer [2025-04-14 00:47:50,088 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:47:50,089 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:47:50,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:47:50,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:47:50,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:47:49" (1/3) ... [2025-04-14 00:47:50,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd998b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:47:50, skipping insertion in model container [2025-04-14 00:47:50,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:47:49" (2/3) ... [2025-04-14 00:47:50,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd998b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:47:50, skipping insertion in model container [2025-04-14 00:47:50,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:47:50" (3/3) ... [2025-04-14 00:47:50,096 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2025-04-14 00:47:50,105 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:47:50,106 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-dist.wvr.c that has 4 procedures, 22 locations, 21 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-14 00:47:50,107 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:47:50,151 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-14 00:47:50,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 24 transitions, 69 flow [2025-04-14 00:47:50,197 INFO L116 PetriNetUnfolderBase]: 3/21 cut-off events. [2025-04-14 00:47:50,200 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:47:50,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 3/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-04-14 00:47:50,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 24 transitions, 69 flow [2025-04-14 00:47:50,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 20 transitions, 58 flow [2025-04-14 00:47:50,214 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:47:50,221 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;@23418ce8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:47:50,221 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 00:47:50,227 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:47:50,227 INFO L116 PetriNetUnfolderBase]: 3/19 cut-off events. [2025-04-14 00:47:50,227 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:47:50,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:47:50,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:47:50,228 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:47:50,231 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:47:50,232 INFO L85 PathProgramCache]: Analyzing trace with hash 128570817, now seen corresponding path program 1 times [2025-04-14 00:47:50,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:47:50,237 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938593656] [2025-04-14 00:47:50,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:47:50,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:47:50,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 00:47:50,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 00:47:50,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:47:50,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:50,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:47:50,736 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938593656] [2025-04-14 00:47:50,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938593656] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:47:50,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:47:50,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 00:47:50,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594797635] [2025-04-14 00:47:50,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:47:50,742 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:47:50,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:47:50,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:47:50,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:47:50,760 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:47:50,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2025-04-14 00:47:50,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:47:50,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:47:50,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:47:50,907 INFO L116 PetriNetUnfolderBase]: 386/564 cut-off events. [2025-04-14 00:47:50,907 INFO L117 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2025-04-14 00:47:50,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 564 events. 386/564 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1764 event pairs, 124 based on Foata normal form. 1/415 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2025-04-14 00:47:50,914 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 32 selfloop transitions, 4 changer transitions 1/37 dead transitions. [2025-04-14 00:47:50,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 181 flow [2025-04-14 00:47:50,916 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:47:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:47:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-04-14 00:47:50,926 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2025-04-14 00:47:50,928 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 58 flow. Second operand 3 states and 47 transitions. [2025-04-14 00:47:50,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 181 flow [2025-04-14 00:47:50,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 37 transitions, 159 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-14 00:47:50,934 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 72 flow [2025-04-14 00:47:50,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2025-04-14 00:47:50,939 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2025-04-14 00:47:50,939 INFO L485 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 72 flow [2025-04-14 00:47:50,939 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2025-04-14 00:47:50,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:47:50,939 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:47:50,939 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:47:50,940 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:47:50,940 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:47:50,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1697594680, now seen corresponding path program 1 times [2025-04-14 00:47:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:47:50,940 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634159635] [2025-04-14 00:47:50,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:47:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:47:50,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:47:50,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:50,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:47:50,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:51,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:47:51,178 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634159635] [2025-04-14 00:47:51,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634159635] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:47:51,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:47:51,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 00:47:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392674697] [2025-04-14 00:47:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:47:51,179 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:47:51,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:47:51,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:47:51,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-14 00:47:51,180 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:47:51,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:47:51,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:47:51,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:47:51,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:47:51,495 INFO L116 PetriNetUnfolderBase]: 555/832 cut-off events. [2025-04-14 00:47:51,495 INFO L117 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2025-04-14 00:47:51,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 832 events. 555/832 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3124 event pairs, 144 based on Foata normal form. 12/844 useless extension candidates. Maximal degree in co-relation 549. Up to 361 conditions per place. [2025-04-14 00:47:51,502 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 64 selfloop transitions, 8 changer transitions 7/79 dead transitions. [2025-04-14 00:47:51,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 79 transitions, 393 flow [2025-04-14 00:47:51,503 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:47:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:47:51,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2025-04-14 00:47:51,504 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2025-04-14 00:47:51,504 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 72 flow. Second operand 7 states and 93 transitions. [2025-04-14 00:47:51,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 79 transitions, 393 flow [2025-04-14 00:47:51,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 79 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 00:47:51,507 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 137 flow [2025-04-14 00:47:51,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=137, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2025-04-14 00:47:51,507 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2025-04-14 00:47:51,507 INFO L485 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 137 flow [2025-04-14 00:47:51,507 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:47:51,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:47:51,507 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:47:51,508 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:47:51,508 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:47:51,508 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:47:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash -509058014, now seen corresponding path program 1 times [2025-04-14 00:47:51,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:47:51,508 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969108631] [2025-04-14 00:47:51,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:47:51,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:47:51,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:47:51,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:51,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:47:51,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:47:51,675 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969108631] [2025-04-14 00:47:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969108631] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:51,675 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066582927] [2025-04-14 00:47:51,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:47:51,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:51,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:47:51,678 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) [2025-04-14 00:47:51,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-14 00:47:51,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:47:51,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:51,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:47:51,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:51,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:47:51,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:47:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:51,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:47:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:52,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066582927] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:52,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:47:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2025-04-14 00:47:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529303196] [2025-04-14 00:47:52,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:47:52,388 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:47:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:47:52,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:47:52,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:47:52,388 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:47:52,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:47:52,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:47:52,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:47:52,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:47:52,726 INFO L116 PetriNetUnfolderBase]: 809/1193 cut-off events. [2025-04-14 00:47:52,726 INFO L117 PetriNetUnfolderBase]: For 1467/1467 co-relation queries the response was YES. [2025-04-14 00:47:52,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3909 conditions, 1193 events. 809/1193 cut-off events. For 1467/1467 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4565 event pairs, 241 based on Foata normal form. 6/1199 useless extension candidates. Maximal degree in co-relation 2228. Up to 453 conditions per place. [2025-04-14 00:47:52,736 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 83 selfloop transitions, 15 changer transitions 1/99 dead transitions. [2025-04-14 00:47:52,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 99 transitions, 618 flow [2025-04-14 00:47:52,737 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 00:47:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 00:47:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2025-04-14 00:47:52,737 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2025-04-14 00:47:52,737 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 137 flow. Second operand 8 states and 115 transitions. [2025-04-14 00:47:52,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 99 transitions, 618 flow [2025-04-14 00:47:52,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 99 transitions, 589 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-04-14 00:47:52,745 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 269 flow [2025-04-14 00:47:52,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=269, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2025-04-14 00:47:52,745 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2025-04-14 00:47:52,746 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 269 flow [2025-04-14 00:47:52,746 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:47:52,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:47:52,746 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:47:52,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-14 00:47:52,946 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:52,947 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:47:52,947 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:47:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1805838381, now seen corresponding path program 1 times [2025-04-14 00:47:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:47:52,947 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166001887] [2025-04-14 00:47:52,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:47:52,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:47:52,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:47:52,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:52,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:47:52,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:53,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:47:53,045 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166001887] [2025-04-14 00:47:53,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166001887] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:53,045 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805727146] [2025-04-14 00:47:53,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:47:53,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:53,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:47:53,047 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) [2025-04-14 00:47:53,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-14 00:47:53,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:47:53,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:53,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:47:53,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:53,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-14 00:47:53,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:47:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:53,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:47:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805727146] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:47:53,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:47:53,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-14 00:47:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518592248] [2025-04-14 00:47:53,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:47:53,429 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-14 00:47:53,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:47:53,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-14 00:47:53,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-04-14 00:47:53,429 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:47:53,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 269 flow. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 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) [2025-04-14 00:47:53,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:47:53,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:47:53,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:47:54,063 INFO L116 PetriNetUnfolderBase]: 1149/1747 cut-off events. [2025-04-14 00:47:54,064 INFO L117 PetriNetUnfolderBase]: For 4343/4343 co-relation queries the response was YES. [2025-04-14 00:47:54,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6708 conditions, 1747 events. 1149/1747 cut-off events. For 4343/4343 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7862 event pairs, 252 based on Foata normal form. 26/1773 useless extension candidates. Maximal degree in co-relation 4535. Up to 648 conditions per place. [2025-04-14 00:47:54,071 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 125 selfloop transitions, 48 changer transitions 1/174 dead transitions. [2025-04-14 00:47:54,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 174 transitions, 1305 flow [2025-04-14 00:47:54,072 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-14 00:47:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-04-14 00:47:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 193 transitions. [2025-04-14 00:47:54,073 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5361111111111111 [2025-04-14 00:47:54,073 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 269 flow. Second operand 15 states and 193 transitions. [2025-04-14 00:47:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 174 transitions, 1305 flow [2025-04-14 00:47:54,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 174 transitions, 1277 flow, removed 14 selfloop flow, removed 0 redundant places. [2025-04-14 00:47:54,084 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 800 flow [2025-04-14 00:47:54,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=800, PETRI_PLACES=71, PETRI_TRANSITIONS=86} [2025-04-14 00:47:54,084 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 44 predicate places. [2025-04-14 00:47:54,084 INFO L485 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 800 flow [2025-04-14 00:47:54,085 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 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) [2025-04-14 00:47:54,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:47:54,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:47:54,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-14 00:47:54,285 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,SelfDestructingSolverStorable3 [2025-04-14 00:47:54,285 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:47:54,286 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:47:54,286 INFO L85 PathProgramCache]: Analyzing trace with hash 571791278, now seen corresponding path program 2 times [2025-04-14 00:47:54,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:47:54,286 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419059916] [2025-04-14 00:47:54,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:47:54,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:47:54,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:47:54,297 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:54,297 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:47:54,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:47:54,428 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419059916] [2025-04-14 00:47:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419059916] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:54,429 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610773955] [2025-04-14 00:47:54,429 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:47:54,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:47:54,431 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) [2025-04-14 00:47:54,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-14 00:47:54,461 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:47:54,479 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:54,479 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:47:54,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:54,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:47:54,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:47:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:54,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:47:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610773955] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:47:55,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:47:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-04-14 00:47:55,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304444109] [2025-04-14 00:47:55,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:47:55,165 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:47:55,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:47:55,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:47:55,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:47:55,165 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:47:55,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 86 transitions, 800 flow. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2025-04-14 00:47:55,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:47:55,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:47:55,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:47:56,462 INFO L116 PetriNetUnfolderBase]: 2180/3163 cut-off events. [2025-04-14 00:47:56,463 INFO L117 PetriNetUnfolderBase]: For 32926/32926 co-relation queries the response was YES. [2025-04-14 00:47:56,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18503 conditions, 3163 events. 2180/3163 cut-off events. For 32926/32926 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 14516 event pairs, 340 based on Foata normal form. 10/3173 useless extension candidates. Maximal degree in co-relation 12082. Up to 1116 conditions per place. [2025-04-14 00:47:56,483 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 186 selfloop transitions, 151 changer transitions 1/338 dead transitions. [2025-04-14 00:47:56,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 338 transitions, 3725 flow [2025-04-14 00:47:56,484 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-14 00:47:56,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-04-14 00:47:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 323 transitions. [2025-04-14 00:47:56,485 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4984567901234568 [2025-04-14 00:47:56,485 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 800 flow. Second operand 27 states and 323 transitions. [2025-04-14 00:47:56,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 338 transitions, 3725 flow [2025-04-14 00:47:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 338 transitions, 3584 flow, removed 56 selfloop flow, removed 1 redundant places. [2025-04-14 00:47:56,525 INFO L231 Difference]: Finished difference. Result has 110 places, 203 transitions, 2732 flow [2025-04-14 00:47:56,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2732, PETRI_PLACES=110, PETRI_TRANSITIONS=203} [2025-04-14 00:47:56,526 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 83 predicate places. [2025-04-14 00:47:56,526 INFO L485 AbstractCegarLoop]: Abstraction has has 110 places, 203 transitions, 2732 flow [2025-04-14 00:47:56,526 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2025-04-14 00:47:56,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:47:56,526 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:47:56,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-14 00:47:56,730 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:56,730 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:47:56,731 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:47:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1657371752, now seen corresponding path program 3 times [2025-04-14 00:47:56,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:47:56,731 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866288180] [2025-04-14 00:47:56,731 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:47:56,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:47:56,735 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:47:56,742 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:56,742 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:47:56,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:56,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:47:56,885 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866288180] [2025-04-14 00:47:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866288180] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:56,886 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420410542] [2025-04-14 00:47:56,886 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:47:56,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:56,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:47:56,888 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) [2025-04-14 00:47:56,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-14 00:47:56,918 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:47:56,939 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:56,939 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:47:56,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:56,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:47:56,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:47:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:57,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:47:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:57,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420410542] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:47:57,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:47:57,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2025-04-14 00:47:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830593758] [2025-04-14 00:47:57,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:47:57,170 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-14 00:47:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:47:57,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-14 00:47:57,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-04-14 00:47:57,171 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:47:57,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 203 transitions, 2732 flow. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 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) [2025-04-14 00:47:57,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:47:57,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:47:57,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:47:57,797 INFO L116 PetriNetUnfolderBase]: 2423/3613 cut-off events. [2025-04-14 00:47:57,798 INFO L117 PetriNetUnfolderBase]: For 55317/55317 co-relation queries the response was YES. [2025-04-14 00:47:57,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24636 conditions, 3613 events. 2423/3613 cut-off events. For 55317/55317 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 17823 event pairs, 440 based on Foata normal form. 10/3623 useless extension candidates. Maximal degree in co-relation 18847. Up to 1287 conditions per place. [2025-04-14 00:47:57,825 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 175 selfloop transitions, 119 changer transitions 0/294 dead transitions. [2025-04-14 00:47:57,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 294 transitions, 4182 flow [2025-04-14 00:47:57,825 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 00:47:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 00:47:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2025-04-14 00:47:57,826 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-04-14 00:47:57,826 INFO L175 Difference]: Start difference. First operand has 110 places, 203 transitions, 2732 flow. Second operand 10 states and 130 transitions. [2025-04-14 00:47:57,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 294 transitions, 4182 flow [2025-04-14 00:47:58,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 294 transitions, 3402 flow, removed 390 selfloop flow, removed 0 redundant places. [2025-04-14 00:47:58,018 INFO L231 Difference]: Finished difference. Result has 124 places, 233 transitions, 2729 flow [2025-04-14 00:47:58,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2729, PETRI_PLACES=124, PETRI_TRANSITIONS=233} [2025-04-14 00:47:58,018 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 97 predicate places. [2025-04-14 00:47:58,018 INFO L485 AbstractCegarLoop]: Abstraction has has 124 places, 233 transitions, 2729 flow [2025-04-14 00:47:58,018 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 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) [2025-04-14 00:47:58,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:47:58,019 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:47:58,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-14 00:47:58,219 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:58,219 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:47:58,220 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:47:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1063745263, now seen corresponding path program 2 times [2025-04-14 00:47:58,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:47:58,220 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960389405] [2025-04-14 00:47:58,220 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:47:58,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:47:58,223 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:47:58,229 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:58,229 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:47:58,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:47:58,347 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960389405] [2025-04-14 00:47:58,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960389405] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:58,347 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940087665] [2025-04-14 00:47:58,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:47:58,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:58,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:47:58,350 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) [2025-04-14 00:47:58,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-14 00:47:58,378 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:47:58,398 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:58,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:47:58,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:58,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:47:58,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:47:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:58,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:47:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:58,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940087665] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:58,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:47:58,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 15 [2025-04-14 00:47:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74707229] [2025-04-14 00:47:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:47:58,618 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:47:58,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:47:58,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:47:58,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:47:58,619 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:47:58,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 233 transitions, 2729 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:47:58,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:47:58,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:47:58,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:47:59,116 INFO L116 PetriNetUnfolderBase]: 2722/4007 cut-off events. [2025-04-14 00:47:59,116 INFO L117 PetriNetUnfolderBase]: For 43350/43350 co-relation queries the response was YES. [2025-04-14 00:47:59,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24425 conditions, 4007 events. 2722/4007 cut-off events. For 43350/43350 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19649 event pairs, 657 based on Foata normal form. 21/4028 useless extension candidates. Maximal degree in co-relation 23972. Up to 1840 conditions per place. [2025-04-14 00:47:59,142 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 266 selfloop transitions, 63 changer transitions 0/329 dead transitions. [2025-04-14 00:47:59,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 329 transitions, 4464 flow [2025-04-14 00:47:59,142 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:47:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:47:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2025-04-14 00:47:59,143 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2025-04-14 00:47:59,143 INFO L175 Difference]: Start difference. First operand has 124 places, 233 transitions, 2729 flow. Second operand 6 states and 77 transitions. [2025-04-14 00:47:59,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 329 transitions, 4464 flow [2025-04-14 00:47:59,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 329 transitions, 4255 flow, removed 68 selfloop flow, removed 2 redundant places. [2025-04-14 00:47:59,269 INFO L231 Difference]: Finished difference. Result has 131 places, 265 transitions, 3321 flow [2025-04-14 00:47:59,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3321, PETRI_PLACES=131, PETRI_TRANSITIONS=265} [2025-04-14 00:47:59,269 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 104 predicate places. [2025-04-14 00:47:59,270 INFO L485 AbstractCegarLoop]: Abstraction has has 131 places, 265 transitions, 3321 flow [2025-04-14 00:47:59,270 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:47:59,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:47:59,270 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:47:59,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-14 00:47:59,470 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:59,470 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:47:59,471 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:47:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1933638476, now seen corresponding path program 4 times [2025-04-14 00:47:59,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:47:59,471 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308979980] [2025-04-14 00:47:59,471 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:47:59,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:47:59,475 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:47:59,484 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:59,484 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:47:59,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:59,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:47:59,625 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308979980] [2025-04-14 00:47:59,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308979980] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:59,625 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380985428] [2025-04-14 00:47:59,625 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:47:59,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:47:59,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:47:59,627 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) [2025-04-14 00:47:59,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-14 00:47:59,652 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:47:59,671 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:47:59,671 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:47:59,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:47:59,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:47:59,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:47:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:59,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:47:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:47:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380985428] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:47:59,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:47:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2025-04-14 00:47:59,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116438580] [2025-04-14 00:47:59,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:47:59,867 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:47:59,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:47:59,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:47:59,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:47:59,868 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:47:59,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 265 transitions, 3321 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:47:59,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:47:59,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:47:59,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:00,406 INFO L116 PetriNetUnfolderBase]: 2798/4117 cut-off events. [2025-04-14 00:48:00,407 INFO L117 PetriNetUnfolderBase]: For 57676/57676 co-relation queries the response was YES. [2025-04-14 00:48:00,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26897 conditions, 4117 events. 2798/4117 cut-off events. For 57676/57676 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 20238 event pairs, 712 based on Foata normal form. 24/4141 useless extension candidates. Maximal degree in co-relation 26421. Up to 2007 conditions per place. [2025-04-14 00:48:00,428 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 281 selfloop transitions, 38 changer transitions 0/319 dead transitions. [2025-04-14 00:48:00,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 319 transitions, 4485 flow [2025-04-14 00:48:00,429 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:48:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:48:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2025-04-14 00:48:00,433 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-04-14 00:48:00,433 INFO L175 Difference]: Start difference. First operand has 131 places, 265 transitions, 3321 flow. Second operand 6 states and 81 transitions. [2025-04-14 00:48:00,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 319 transitions, 4485 flow [2025-04-14 00:48:00,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 319 transitions, 4385 flow, removed 38 selfloop flow, removed 1 redundant places. [2025-04-14 00:48:00,563 INFO L231 Difference]: Finished difference. Result has 138 places, 277 transitions, 3527 flow [2025-04-14 00:48:00,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3527, PETRI_PLACES=138, PETRI_TRANSITIONS=277} [2025-04-14 00:48:00,564 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 111 predicate places. [2025-04-14 00:48:00,564 INFO L485 AbstractCegarLoop]: Abstraction has has 138 places, 277 transitions, 3527 flow [2025-04-14 00:48:00,564 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:00,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:00,564 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:00,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-14 00:48:00,765 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:00,765 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:00,765 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:00,766 INFO L85 PathProgramCache]: Analyzing trace with hash -843362397, now seen corresponding path program 3 times [2025-04-14 00:48:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:00,766 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124718283] [2025-04-14 00:48:00,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:48:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:00,770 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:00,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:00,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:48:00,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:00,909 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124718283] [2025-04-14 00:48:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124718283] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:00,909 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075063728] [2025-04-14 00:48:00,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:48:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:00,912 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) [2025-04-14 00:48:00,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-14 00:48:00,940 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:00,959 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:00,959 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:48:00,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:00,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:48:00,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:01,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:01,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075063728] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:48:01,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:48:01,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 15 [2025-04-14 00:48:01,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067531488] [2025-04-14 00:48:01,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:48:01,100 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:48:01,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:01,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:48:01,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:48:01,100 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:01,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 277 transitions, 3527 flow. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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) [2025-04-14 00:48:01,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:01,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:01,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:02,002 INFO L116 PetriNetUnfolderBase]: 3932/5655 cut-off events. [2025-04-14 00:48:02,002 INFO L117 PetriNetUnfolderBase]: For 97989/97989 co-relation queries the response was YES. [2025-04-14 00:48:02,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39593 conditions, 5655 events. 3932/5655 cut-off events. For 97989/97989 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 28412 event pairs, 576 based on Foata normal form. 40/5695 useless extension candidates. Maximal degree in co-relation 39092. Up to 3689 conditions per place. [2025-04-14 00:48:02,042 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 311 selfloop transitions, 331 changer transitions 0/642 dead transitions. [2025-04-14 00:48:02,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 642 transitions, 9217 flow [2025-04-14 00:48:02,042 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-14 00:48:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-14 00:48:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 232 transitions. [2025-04-14 00:48:02,043 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-04-14 00:48:02,043 INFO L175 Difference]: Start difference. First operand has 138 places, 277 transitions, 3527 flow. Second operand 22 states and 232 transitions. [2025-04-14 00:48:02,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 642 transitions, 9217 flow [2025-04-14 00:48:02,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 642 transitions, 9060 flow, removed 57 selfloop flow, removed 1 redundant places. [2025-04-14 00:48:02,400 INFO L231 Difference]: Finished difference. Result has 172 places, 498 transitions, 7716 flow [2025-04-14 00:48:02,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7716, PETRI_PLACES=172, PETRI_TRANSITIONS=498} [2025-04-14 00:48:02,401 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 145 predicate places. [2025-04-14 00:48:02,401 INFO L485 AbstractCegarLoop]: Abstraction has has 172 places, 498 transitions, 7716 flow [2025-04-14 00:48:02,401 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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) [2025-04-14 00:48:02,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:02,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:02,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:02,605 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:02,606 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:02,606 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1889701453, now seen corresponding path program 4 times [2025-04-14 00:48:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:02,606 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699928750] [2025-04-14 00:48:02,606 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:48:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:02,609 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:02,616 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:02,616 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:48:02,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:02,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:02,712 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699928750] [2025-04-14 00:48:02,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699928750] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:02,712 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136131822] [2025-04-14 00:48:02,712 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:48:02,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:02,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:02,714 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) [2025-04-14 00:48:02,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-14 00:48:02,745 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:02,760 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:02,760 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:48:02,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:02,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-14 00:48:02,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:02,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:02,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136131822] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:02,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:48:02,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 12 [2025-04-14 00:48:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749814643] [2025-04-14 00:48:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:02,954 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:48:02,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:02,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:48:02,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-04-14 00:48:02,955 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:02,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 498 transitions, 7716 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:02,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:02,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:02,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:03,812 INFO L116 PetriNetUnfolderBase]: 4014/5805 cut-off events. [2025-04-14 00:48:03,812 INFO L117 PetriNetUnfolderBase]: For 97858/97858 co-relation queries the response was YES. [2025-04-14 00:48:03,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44901 conditions, 5805 events. 4014/5805 cut-off events. For 97858/97858 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29403 event pairs, 447 based on Foata normal form. 6/5811 useless extension candidates. Maximal degree in co-relation 44342. Up to 2192 conditions per place. [2025-04-14 00:48:03,852 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 415 selfloop transitions, 277 changer transitions 3/695 dead transitions. [2025-04-14 00:48:03,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 695 transitions, 11734 flow [2025-04-14 00:48:03,854 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:48:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:48:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2025-04-14 00:48:03,854 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-04-14 00:48:03,854 INFO L175 Difference]: Start difference. First operand has 172 places, 498 transitions, 7716 flow. Second operand 7 states and 96 transitions. [2025-04-14 00:48:03,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 695 transitions, 11734 flow [2025-04-14 00:48:04,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 695 transitions, 10830 flow, removed 452 selfloop flow, removed 0 redundant places. [2025-04-14 00:48:04,582 INFO L231 Difference]: Finished difference. Result has 183 places, 546 transitions, 8761 flow [2025-04-14 00:48:04,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7046, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8761, PETRI_PLACES=183, PETRI_TRANSITIONS=546} [2025-04-14 00:48:04,583 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 156 predicate places. [2025-04-14 00:48:04,584 INFO L485 AbstractCegarLoop]: Abstraction has has 183 places, 546 transitions, 8761 flow [2025-04-14 00:48:04,584 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:04,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:04,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:04,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-14 00:48:04,784 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,SelfDestructingSolverStorable9 [2025-04-14 00:48:04,785 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:04,785 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:04,785 INFO L85 PathProgramCache]: Analyzing trace with hash -776884852, now seen corresponding path program 5 times [2025-04-14 00:48:04,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:04,785 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32260793] [2025-04-14 00:48:04,785 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:48:04,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:04,789 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:04,794 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:04,794 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:04,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:04,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:04,889 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32260793] [2025-04-14 00:48:04,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32260793] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:04,889 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481939593] [2025-04-14 00:48:04,889 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:48:04,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:04,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:04,891 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) [2025-04-14 00:48:04,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-14 00:48:04,921 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:04,962 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:04,962 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:04,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:04,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:48:04,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:05,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481939593] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:05,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:48:05,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2025-04-14 00:48:05,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692208411] [2025-04-14 00:48:05,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:05,051 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:48:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:05,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:48:05,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-04-14 00:48:05,051 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:05,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 546 transitions, 8761 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:05,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:05,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:05,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:06,191 INFO L116 PetriNetUnfolderBase]: 4597/6633 cut-off events. [2025-04-14 00:48:06,191 INFO L117 PetriNetUnfolderBase]: For 103656/103656 co-relation queries the response was YES. [2025-04-14 00:48:06,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50775 conditions, 6633 events. 4597/6633 cut-off events. For 103656/103656 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 34337 event pairs, 404 based on Foata normal form. 10/6643 useless extension candidates. Maximal degree in co-relation 50226. Up to 2514 conditions per place. [2025-04-14 00:48:06,254 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 562 selfloop transitions, 164 changer transitions 0/726 dead transitions. [2025-04-14 00:48:06,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 726 transitions, 12511 flow [2025-04-14 00:48:06,255 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 00:48:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 00:48:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2025-04-14 00:48:06,256 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-04-14 00:48:06,256 INFO L175 Difference]: Start difference. First operand has 183 places, 546 transitions, 8761 flow. Second operand 8 states and 116 transitions. [2025-04-14 00:48:06,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 726 transitions, 12511 flow [2025-04-14 00:48:06,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 726 transitions, 12171 flow, removed 99 selfloop flow, removed 1 redundant places. [2025-04-14 00:48:06,816 INFO L231 Difference]: Finished difference. Result has 194 places, 602 transitions, 10155 flow [2025-04-14 00:48:06,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8475, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10155, PETRI_PLACES=194, PETRI_TRANSITIONS=602} [2025-04-14 00:48:06,817 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 167 predicate places. [2025-04-14 00:48:06,817 INFO L485 AbstractCegarLoop]: Abstraction has has 194 places, 602 transitions, 10155 flow [2025-04-14 00:48:06,817 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:06,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:06,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:06,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:07,017 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:07,018 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:07,018 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash 991616756, now seen corresponding path program 2 times [2025-04-14 00:48:07,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:07,018 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369559520] [2025-04-14 00:48:07,018 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:48:07,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:07,022 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:07,031 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:07,031 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:07,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:07,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:07,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369559520] [2025-04-14 00:48:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369559520] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:07,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733731236] [2025-04-14 00:48:07,119 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:48:07,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:07,121 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) [2025-04-14 00:48:07,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-14 00:48:07,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:07,170 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:07,170 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:07,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:07,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:48:07,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:07,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:48:07,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733731236] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:48:07,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:48:07,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-04-14 00:48:07,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013996387] [2025-04-14 00:48:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:07,211 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:48:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:07,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:48:07,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-04-14 00:48:07,212 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:07,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 602 transitions, 10155 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:07,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:07,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:07,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:08,208 INFO L116 PetriNetUnfolderBase]: 4646/6729 cut-off events. [2025-04-14 00:48:08,208 INFO L117 PetriNetUnfolderBase]: For 112032/112032 co-relation queries the response was YES. [2025-04-14 00:48:08,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52680 conditions, 6729 events. 4646/6729 cut-off events. For 112032/112032 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 35304 event pairs, 1201 based on Foata normal form. 16/6745 useless extension candidates. Maximal degree in co-relation 52104. Up to 5972 conditions per place. [2025-04-14 00:48:08,251 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 584 selfloop transitions, 96 changer transitions 10/690 dead transitions. [2025-04-14 00:48:08,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 690 transitions, 12590 flow [2025-04-14 00:48:08,252 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:48:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:48:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-04-14 00:48:08,252 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2025-04-14 00:48:08,252 INFO L175 Difference]: Start difference. First operand has 194 places, 602 transitions, 10155 flow. Second operand 7 states and 87 transitions. [2025-04-14 00:48:08,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 690 transitions, 12590 flow [2025-04-14 00:48:08,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 690 transitions, 12526 flow, removed 32 selfloop flow, removed 0 redundant places. [2025-04-14 00:48:08,696 INFO L231 Difference]: Finished difference. Result has 202 places, 607 transitions, 10426 flow [2025-04-14 00:48:08,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10111, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10426, PETRI_PLACES=202, PETRI_TRANSITIONS=607} [2025-04-14 00:48:08,696 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 175 predicate places. [2025-04-14 00:48:08,697 INFO L485 AbstractCegarLoop]: Abstraction has has 202 places, 607 transitions, 10426 flow [2025-04-14 00:48:08,697 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:08,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:08,697 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:08,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:08,899 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,SelfDestructingSolverStorable11 [2025-04-14 00:48:08,899 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:08,899 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2091546438, now seen corresponding path program 6 times [2025-04-14 00:48:08,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:08,899 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130656736] [2025-04-14 00:48:08,899 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:48:08,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:08,903 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:08,907 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:08,907 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:48:08,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:08,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:08,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130656736] [2025-04-14 00:48:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130656736] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:08,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478908852] [2025-04-14 00:48:08,996 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:48:08,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:08,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:08,998 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) [2025-04-14 00:48:09,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-14 00:48:09,025 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:09,040 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:09,040 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:48:09,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:09,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:48:09,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:09,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:09,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478908852] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:09,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:48:09,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 15 [2025-04-14 00:48:09,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231034103] [2025-04-14 00:48:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:09,196 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:48:09,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:09,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:48:09,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:48:09,197 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:09,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 607 transitions, 10426 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:09,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:09,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:10,242 INFO L116 PetriNetUnfolderBase]: 4639/6709 cut-off events. [2025-04-14 00:48:10,242 INFO L117 PetriNetUnfolderBase]: For 112460/112460 co-relation queries the response was YES. [2025-04-14 00:48:10,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52741 conditions, 6709 events. 4639/6709 cut-off events. For 112460/112460 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 35032 event pairs, 911 based on Foata normal form. 10/6719 useless extension candidates. Maximal degree in co-relation 52144. Up to 3241 conditions per place. [2025-04-14 00:48:10,304 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 586 selfloop transitions, 74 changer transitions 0/660 dead transitions. [2025-04-14 00:48:10,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 660 transitions, 12241 flow [2025-04-14 00:48:10,305 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:48:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:48:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2025-04-14 00:48:10,307 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-04-14 00:48:10,307 INFO L175 Difference]: Start difference. First operand has 202 places, 607 transitions, 10426 flow. Second operand 6 states and 80 transitions. [2025-04-14 00:48:10,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 660 transitions, 12241 flow [2025-04-14 00:48:10,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 660 transitions, 12084 flow, removed 28 selfloop flow, removed 3 redundant places. [2025-04-14 00:48:10,751 INFO L231 Difference]: Finished difference. Result has 203 places, 609 transitions, 10455 flow [2025-04-14 00:48:10,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10271, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10455, PETRI_PLACES=203, PETRI_TRANSITIONS=609} [2025-04-14 00:48:10,752 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 176 predicate places. [2025-04-14 00:48:10,752 INFO L485 AbstractCegarLoop]: Abstraction has has 203 places, 609 transitions, 10455 flow [2025-04-14 00:48:10,752 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:10,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:10,752 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:10,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-04-14 00:48:10,953 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,SelfDestructingSolverStorable12 [2025-04-14 00:48:10,953 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:10,954 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1072511095, now seen corresponding path program 5 times [2025-04-14 00:48:10,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:10,954 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594297503] [2025-04-14 00:48:10,954 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:48:10,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:10,957 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:10,963 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:10,963 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:10,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:11,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:11,056 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594297503] [2025-04-14 00:48:11,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594297503] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:11,056 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851468046] [2025-04-14 00:48:11,056 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:48:11,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:11,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:11,058 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:11,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-14 00:48:11,085 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:11,098 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:11,098 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:11,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:11,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:48:11,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:11,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851468046] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:11,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:48:11,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 14 [2025-04-14 00:48:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19777020] [2025-04-14 00:48:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:11,233 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:48:11,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:11,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:48:11,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:48:11,234 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:11,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 609 transitions, 10455 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:11,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:11,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:11,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:12,366 INFO L116 PetriNetUnfolderBase]: 5132/7444 cut-off events. [2025-04-14 00:48:12,366 INFO L117 PetriNetUnfolderBase]: For 125458/125458 co-relation queries the response was YES. [2025-04-14 00:48:12,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58718 conditions, 7444 events. 5132/7444 cut-off events. For 125458/125458 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 39826 event pairs, 665 based on Foata normal form. 25/7469 useless extension candidates. Maximal degree in co-relation 58130. Up to 2818 conditions per place. [2025-04-14 00:48:12,422 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 455 selfloop transitions, 304 changer transitions 0/759 dead transitions. [2025-04-14 00:48:12,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 759 transitions, 14189 flow [2025-04-14 00:48:12,423 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 00:48:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 00:48:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2025-04-14 00:48:12,424 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.578125 [2025-04-14 00:48:12,424 INFO L175 Difference]: Start difference. First operand has 203 places, 609 transitions, 10455 flow. Second operand 8 states and 111 transitions. [2025-04-14 00:48:12,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 759 transitions, 14189 flow [2025-04-14 00:48:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 759 transitions, 14019 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-04-14 00:48:12,942 INFO L231 Difference]: Finished difference. Result has 211 places, 659 transitions, 12462 flow [2025-04-14 00:48:12,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10303, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12462, PETRI_PLACES=211, PETRI_TRANSITIONS=659} [2025-04-14 00:48:12,943 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 184 predicate places. [2025-04-14 00:48:12,943 INFO L485 AbstractCegarLoop]: Abstraction has has 211 places, 659 transitions, 12462 flow [2025-04-14 00:48:12,943 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:12,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:12,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:12,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:13,143 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-14 00:48:13,144 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:13,145 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1101755808, now seen corresponding path program 7 times [2025-04-14 00:48:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:13,145 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123882732] [2025-04-14 00:48:13,145 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:48:13,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:13,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:48:13,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:13,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:48:13,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:13,229 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123882732] [2025-04-14 00:48:13,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123882732] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:13,229 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707287046] [2025-04-14 00:48:13,229 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:48:13,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:13,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:13,231 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:13,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-14 00:48:13,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:48:13,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:13,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:48:13,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:13,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-14 00:48:13,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:13,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:13,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707287046] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:13,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:48:13,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2025-04-14 00:48:13,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704429022] [2025-04-14 00:48:13,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:13,418 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:48:13,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:13,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:48:13,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-04-14 00:48:13,419 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:13,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 659 transitions, 12462 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:13,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:13,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:13,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:14,534 INFO L116 PetriNetUnfolderBase]: 5122/7434 cut-off events. [2025-04-14 00:48:14,534 INFO L117 PetriNetUnfolderBase]: For 145317/145317 co-relation queries the response was YES. [2025-04-14 00:48:14,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60766 conditions, 7434 events. 5122/7434 cut-off events. For 145317/145317 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 39755 event pairs, 970 based on Foata normal form. 10/7444 useless extension candidates. Maximal degree in co-relation 60153. Up to 3861 conditions per place. [2025-04-14 00:48:14,586 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 608 selfloop transitions, 137 changer transitions 0/745 dead transitions. [2025-04-14 00:48:14,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 745 transitions, 14819 flow [2025-04-14 00:48:14,587 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:48:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:48:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2025-04-14 00:48:14,587 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2025-04-14 00:48:14,587 INFO L175 Difference]: Start difference. First operand has 211 places, 659 transitions, 12462 flow. Second operand 6 states and 79 transitions. [2025-04-14 00:48:14,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 745 transitions, 14819 flow [2025-04-14 00:48:15,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 745 transitions, 14696 flow, removed 20 selfloop flow, removed 1 redundant places. [2025-04-14 00:48:15,271 INFO L231 Difference]: Finished difference. Result has 218 places, 662 transitions, 12763 flow [2025-04-14 00:48:15,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12339, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12763, PETRI_PLACES=218, PETRI_TRANSITIONS=662} [2025-04-14 00:48:15,271 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 191 predicate places. [2025-04-14 00:48:15,271 INFO L485 AbstractCegarLoop]: Abstraction has has 218 places, 662 transitions, 12763 flow [2025-04-14 00:48:15,272 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:15,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:15,272 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:15,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:15,472 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-14 00:48:15,476 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:15,477 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:15,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1332886151, now seen corresponding path program 6 times [2025-04-14 00:48:15,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:15,477 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577347199] [2025-04-14 00:48:15,477 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:48:15,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:15,480 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:15,483 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:15,483 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:48:15,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:15,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:15,562 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577347199] [2025-04-14 00:48:15,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577347199] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:15,562 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859623487] [2025-04-14 00:48:15,562 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:48:15,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:15,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:15,564 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:15,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-14 00:48:15,594 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:15,612 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:15,612 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:48:15,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:15,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:48:15,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:15,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:16,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859623487] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:48:16,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:48:16,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-04-14 00:48:16,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729978462] [2025-04-14 00:48:16,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:48:16,027 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:48:16,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:16,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:48:16,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:48:16,028 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:16,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 662 transitions, 12763 flow. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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) [2025-04-14 00:48:16,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:16,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:16,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:18,211 INFO L116 PetriNetUnfolderBase]: 6996/10092 cut-off events. [2025-04-14 00:48:18,212 INFO L117 PetriNetUnfolderBase]: For 216241/216241 co-relation queries the response was YES. [2025-04-14 00:48:18,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84566 conditions, 10092 events. 6996/10092 cut-off events. For 216241/216241 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 56270 event pairs, 884 based on Foata normal form. 33/10125 useless extension candidates. Maximal degree in co-relation 83845. Up to 4092 conditions per place. [2025-04-14 00:48:18,293 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 666 selfloop transitions, 582 changer transitions 0/1248 dead transitions. [2025-04-14 00:48:18,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1248 transitions, 25281 flow [2025-04-14 00:48:18,293 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-14 00:48:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-04-14 00:48:18,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 314 transitions. [2025-04-14 00:48:18,294 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2025-04-14 00:48:18,294 INFO L175 Difference]: Start difference. First operand has 218 places, 662 transitions, 12763 flow. Second operand 27 states and 314 transitions. [2025-04-14 00:48:18,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 1248 transitions, 25281 flow [2025-04-14 00:48:19,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1248 transitions, 25152 flow, removed 27 selfloop flow, removed 1 redundant places. [2025-04-14 00:48:19,282 INFO L231 Difference]: Finished difference. Result has 258 places, 943 transitions, 21239 flow [2025-04-14 00:48:19,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12686, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=21239, PETRI_PLACES=258, PETRI_TRANSITIONS=943} [2025-04-14 00:48:19,283 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 231 predicate places. [2025-04-14 00:48:19,283 INFO L485 AbstractCegarLoop]: Abstraction has has 258 places, 943 transitions, 21239 flow [2025-04-14 00:48:19,283 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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) [2025-04-14 00:48:19,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:19,283 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:19,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:19,484 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:19,484 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:19,484 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1621415978, now seen corresponding path program 8 times [2025-04-14 00:48:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:19,485 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476458213] [2025-04-14 00:48:19,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:48:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:19,489 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:19,495 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:19,495 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:19,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:19,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:19,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476458213] [2025-04-14 00:48:19,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476458213] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:19,595 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662427721] [2025-04-14 00:48:19,595 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:48:19,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:19,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:19,597 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:19,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-14 00:48:19,623 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:19,640 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:19,640 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:19,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:19,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:48:19,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:19,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:19,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662427721] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:19,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:48:19,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 15 [2025-04-14 00:48:19,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157719626] [2025-04-14 00:48:19,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:19,773 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:48:19,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:19,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:48:19,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:48:19,773 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:19,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 943 transitions, 21239 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:19,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:19,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:19,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:22,204 INFO L116 PetriNetUnfolderBase]: 6959/10021 cut-off events. [2025-04-14 00:48:22,204 INFO L117 PetriNetUnfolderBase]: For 252140/252140 co-relation queries the response was YES. [2025-04-14 00:48:22,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92050 conditions, 10021 events. 6959/10021 cut-off events. For 252140/252140 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 55258 event pairs, 1123 based on Foata normal form. 26/10047 useless extension candidates. Maximal degree in co-relation 91729. Up to 4914 conditions per place. [2025-04-14 00:48:22,330 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 864 selfloop transitions, 193 changer transitions 0/1057 dead transitions. [2025-04-14 00:48:22,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1057 transitions, 24789 flow [2025-04-14 00:48:22,331 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:48:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:48:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2025-04-14 00:48:22,332 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-04-14 00:48:22,332 INFO L175 Difference]: Start difference. First operand has 258 places, 943 transitions, 21239 flow. Second operand 6 states and 80 transitions. [2025-04-14 00:48:22,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1057 transitions, 24789 flow [2025-04-14 00:48:24,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1057 transitions, 23615 flow, removed 423 selfloop flow, removed 5 redundant places. [2025-04-14 00:48:24,497 INFO L231 Difference]: Finished difference. Result has 258 places, 942 transitions, 20680 flow [2025-04-14 00:48:24,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20294, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=20680, PETRI_PLACES=258, PETRI_TRANSITIONS=942} [2025-04-14 00:48:24,498 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 231 predicate places. [2025-04-14 00:48:24,498 INFO L485 AbstractCegarLoop]: Abstraction has has 258 places, 942 transitions, 20680 flow [2025-04-14 00:48:24,498 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:48:24,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:24,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:24,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-14 00:48:24,698 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-04-14 00:48:24,699 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:24,699 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash 892876907, now seen corresponding path program 7 times [2025-04-14 00:48:24,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:24,699 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866357725] [2025-04-14 00:48:24,699 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:48:24,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:24,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:48:24,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:24,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:48:24,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:24,767 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866357725] [2025-04-14 00:48:24,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866357725] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:48:24,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:48:24,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 00:48:24,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284995471] [2025-04-14 00:48:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:24,767 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:48:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:24,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:48:24,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-14 00:48:24,768 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:24,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 942 transitions, 20680 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:24,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:24,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:24,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:26,954 INFO L116 PetriNetUnfolderBase]: 7123/10304 cut-off events. [2025-04-14 00:48:26,954 INFO L117 PetriNetUnfolderBase]: For 236510/236510 co-relation queries the response was YES. [2025-04-14 00:48:27,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89867 conditions, 10304 events. 7123/10304 cut-off events. For 236510/236510 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 57835 event pairs, 1035 based on Foata normal form. 30/10334 useless extension candidates. Maximal degree in co-relation 89563. Up to 5417 conditions per place. [2025-04-14 00:48:27,046 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 876 selfloop transitions, 227 changer transitions 9/1112 dead transitions. [2025-04-14 00:48:27,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 1112 transitions, 25550 flow [2025-04-14 00:48:27,046 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:48:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:48:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2025-04-14 00:48:27,047 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-04-14 00:48:27,047 INFO L175 Difference]: Start difference. First operand has 258 places, 942 transitions, 20680 flow. Second operand 7 states and 88 transitions. [2025-04-14 00:48:27,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 1112 transitions, 25550 flow [2025-04-14 00:48:28,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1112 transitions, 25054 flow, removed 55 selfloop flow, removed 4 redundant places. [2025-04-14 00:48:28,453 INFO L231 Difference]: Finished difference. Result has 264 places, 978 transitions, 21821 flow [2025-04-14 00:48:28,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20210, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21821, PETRI_PLACES=264, PETRI_TRANSITIONS=978} [2025-04-14 00:48:28,454 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 237 predicate places. [2025-04-14 00:48:28,454 INFO L485 AbstractCegarLoop]: Abstraction has has 264 places, 978 transitions, 21821 flow [2025-04-14 00:48:28,454 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:28,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:28,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:28,454 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-14 00:48:28,454 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:28,454 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1853998635, now seen corresponding path program 8 times [2025-04-14 00:48:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:28,455 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978121009] [2025-04-14 00:48:28,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:48:28,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:28,457 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:28,463 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:28,463 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:28,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:28,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:28,533 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978121009] [2025-04-14 00:48:28,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978121009] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:28,533 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473560931] [2025-04-14 00:48:28,533 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:48:28,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:28,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:28,536 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:28,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-14 00:48:28,564 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:28,580 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:28,580 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:28,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:28,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:48:28,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:28,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:48:28,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473560931] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:48:28,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:48:28,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2025-04-14 00:48:28,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227243255] [2025-04-14 00:48:28,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:28,595 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:48:28,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:28,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:48:28,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-04-14 00:48:28,595 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:28,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 978 transitions, 21821 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:28,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:28,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:28,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:30,796 INFO L116 PetriNetUnfolderBase]: 7179/10443 cut-off events. [2025-04-14 00:48:30,796 INFO L117 PetriNetUnfolderBase]: For 246304/246304 co-relation queries the response was YES. [2025-04-14 00:48:30,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91994 conditions, 10443 events. 7179/10443 cut-off events. For 246304/246304 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 59163 event pairs, 783 based on Foata normal form. 24/10467 useless extension candidates. Maximal degree in co-relation 91703. Up to 4781 conditions per place. [2025-04-14 00:48:30,877 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 712 selfloop transitions, 509 changer transitions 12/1233 dead transitions. [2025-04-14 00:48:30,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1233 transitions, 28059 flow [2025-04-14 00:48:30,877 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:48:30,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:48:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2025-04-14 00:48:30,878 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-04-14 00:48:30,878 INFO L175 Difference]: Start difference. First operand has 264 places, 978 transitions, 21821 flow. Second operand 7 states and 80 transitions. [2025-04-14 00:48:30,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1233 transitions, 28059 flow [2025-04-14 00:48:32,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1233 transitions, 27680 flow, removed 35 selfloop flow, removed 3 redundant places. [2025-04-14 00:48:32,368 INFO L231 Difference]: Finished difference. Result has 270 places, 1003 transitions, 23319 flow [2025-04-14 00:48:32,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=21525, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=978, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23319, PETRI_PLACES=270, PETRI_TRANSITIONS=1003} [2025-04-14 00:48:32,369 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 243 predicate places. [2025-04-14 00:48:32,369 INFO L485 AbstractCegarLoop]: Abstraction has has 270 places, 1003 transitions, 23319 flow [2025-04-14 00:48:32,369 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:32,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:32,369 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:32,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:32,569 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:32,570 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:32,570 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:32,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1105489903, now seen corresponding path program 9 times [2025-04-14 00:48:32,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:32,570 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558139564] [2025-04-14 00:48:32,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:48:32,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:32,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:32,580 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:32,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:48:32,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:32,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:32,666 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558139564] [2025-04-14 00:48:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558139564] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:32,666 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050058854] [2025-04-14 00:48:32,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:48:32,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:32,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:32,668 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:32,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-14 00:48:32,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:32,713 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:32,713 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:48:32,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:32,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:48:32,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:32,822 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:33,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050058854] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:48:33,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:48:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2025-04-14 00:48:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616716134] [2025-04-14 00:48:33,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:48:33,012 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-14 00:48:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:33,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-14 00:48:33,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-14 00:48:33,012 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:33,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1003 transitions, 23319 flow. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 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) [2025-04-14 00:48:33,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:33,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:33,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:35,501 INFO L116 PetriNetUnfolderBase]: 7137/10369 cut-off events. [2025-04-14 00:48:35,501 INFO L117 PetriNetUnfolderBase]: For 273310/273310 co-relation queries the response was YES. [2025-04-14 00:48:35,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93595 conditions, 10369 events. 7137/10369 cut-off events. For 273310/273310 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 58788 event pairs, 800 based on Foata normal form. 27/10396 useless extension candidates. Maximal degree in co-relation 93304. Up to 3813 conditions per place. [2025-04-14 00:48:35,645 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 535 selfloop transitions, 595 changer transitions 0/1130 dead transitions. [2025-04-14 00:48:35,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1130 transitions, 27090 flow [2025-04-14 00:48:35,650 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 00:48:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 00:48:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2025-04-14 00:48:35,651 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2025-04-14 00:48:35,651 INFO L175 Difference]: Start difference. First operand has 270 places, 1003 transitions, 23319 flow. Second operand 12 states and 148 transitions. [2025-04-14 00:48:35,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1130 transitions, 27090 flow [2025-04-14 00:48:37,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1130 transitions, 26011 flow, removed 39 selfloop flow, removed 7 redundant places. [2025-04-14 00:48:37,050 INFO L231 Difference]: Finished difference. Result has 272 places, 1003 transitions, 23480 flow [2025-04-14 00:48:37,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=22159, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=590, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=23480, PETRI_PLACES=272, PETRI_TRANSITIONS=1003} [2025-04-14 00:48:37,051 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 245 predicate places. [2025-04-14 00:48:37,051 INFO L485 AbstractCegarLoop]: Abstraction has has 272 places, 1003 transitions, 23480 flow [2025-04-14 00:48:37,052 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 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) [2025-04-14 00:48:37,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:37,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:37,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:37,252 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:37,252 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:37,253 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1693311947, now seen corresponding path program 10 times [2025-04-14 00:48:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:37,253 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799567515] [2025-04-14 00:48:37,253 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:48:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:37,256 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:37,260 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:37,260 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:48:37,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:37,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:37,336 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799567515] [2025-04-14 00:48:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799567515] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:48:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:48:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 00:48:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614974531] [2025-04-14 00:48:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:37,336 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:48:37,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:37,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:48:37,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-14 00:48:37,336 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:37,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 1003 transitions, 23480 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:37,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:37,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:37,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:39,617 INFO L116 PetriNetUnfolderBase]: 7383/10807 cut-off events. [2025-04-14 00:48:39,617 INFO L117 PetriNetUnfolderBase]: For 274005/274005 co-relation queries the response was YES. [2025-04-14 00:48:39,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98085 conditions, 10807 events. 7383/10807 cut-off events. For 274005/274005 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 62291 event pairs, 1086 based on Foata normal form. 33/10840 useless extension candidates. Maximal degree in co-relation 97771. Up to 7130 conditions per place. [2025-04-14 00:48:39,728 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 632 selfloop transitions, 582 changer transitions 7/1221 dead transitions. [2025-04-14 00:48:39,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1221 transitions, 29846 flow [2025-04-14 00:48:39,729 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:48:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:48:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2025-04-14 00:48:39,729 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2025-04-14 00:48:39,729 INFO L175 Difference]: Start difference. First operand has 272 places, 1003 transitions, 23480 flow. Second operand 6 states and 71 transitions. [2025-04-14 00:48:39,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1221 transitions, 29846 flow [2025-04-14 00:48:41,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1221 transitions, 29377 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-04-14 00:48:41,670 INFO L231 Difference]: Finished difference. Result has 275 places, 1076 transitions, 26854 flow [2025-04-14 00:48:41,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=23144, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=26854, PETRI_PLACES=275, PETRI_TRANSITIONS=1076} [2025-04-14 00:48:41,671 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 248 predicate places. [2025-04-14 00:48:41,672 INFO L485 AbstractCegarLoop]: Abstraction has has 275 places, 1076 transitions, 26854 flow [2025-04-14 00:48:41,672 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:41,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:41,672 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:41,672 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-04-14 00:48:41,672 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:41,672 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1032797527, now seen corresponding path program 11 times [2025-04-14 00:48:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:41,672 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329153129] [2025-04-14 00:48:41,672 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:48:41,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:41,675 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:41,679 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:41,679 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:41,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:41,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:41,768 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329153129] [2025-04-14 00:48:41,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329153129] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:41,768 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9037580] [2025-04-14 00:48:41,768 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:48:41,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:41,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:41,770 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:41,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-14 00:48:41,797 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:41,813 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:41,814 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:48:41,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:41,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:48:41,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:41,892 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:48:41,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9037580] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:48:41,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:48:41,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-04-14 00:48:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102497258] [2025-04-14 00:48:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:48:41,892 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:48:41,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:41,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:48:41,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-04-14 00:48:41,892 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:41,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 1076 transitions, 26854 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:41,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:41,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:41,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:44,378 INFO L116 PetriNetUnfolderBase]: 7367/10848 cut-off events. [2025-04-14 00:48:44,378 INFO L117 PetriNetUnfolderBase]: For 312122/312122 co-relation queries the response was YES. [2025-04-14 00:48:44,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103889 conditions, 10848 events. 7367/10848 cut-off events. For 312122/312122 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 63582 event pairs, 1617 based on Foata normal form. 33/10881 useless extension candidates. Maximal degree in co-relation 103576. Up to 9435 conditions per place. [2025-04-14 00:48:44,493 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 898 selfloop transitions, 275 changer transitions 9/1182 dead transitions. [2025-04-14 00:48:44,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1182 transitions, 31003 flow [2025-04-14 00:48:44,494 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:48:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:48:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2025-04-14 00:48:44,494 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2025-04-14 00:48:44,494 INFO L175 Difference]: Start difference. First operand has 275 places, 1076 transitions, 26854 flow. Second operand 7 states and 79 transitions. [2025-04-14 00:48:44,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1182 transitions, 31003 flow [2025-04-14 00:48:46,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1182 transitions, 30324 flow, removed 82 selfloop flow, removed 1 redundant places. [2025-04-14 00:48:46,338 INFO L231 Difference]: Finished difference. Result has 284 places, 1108 transitions, 27854 flow [2025-04-14 00:48:46,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=26189, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=819, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27854, PETRI_PLACES=284, PETRI_TRANSITIONS=1108} [2025-04-14 00:48:46,339 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 257 predicate places. [2025-04-14 00:48:46,339 INFO L485 AbstractCegarLoop]: Abstraction has has 284 places, 1108 transitions, 27854 flow [2025-04-14 00:48:46,339 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:48:46,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:46,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:46,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-04-14 00:48:46,540 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:46,540 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:46,540 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1050675437, now seen corresponding path program 12 times [2025-04-14 00:48:46,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:46,540 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627064278] [2025-04-14 00:48:46,540 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:48:46,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:46,543 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:46,546 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:46,546 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:48:46,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:46,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:46,643 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627064278] [2025-04-14 00:48:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627064278] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:46,643 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015434172] [2025-04-14 00:48:46,643 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:48:46,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:46,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:46,645 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:46,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-14 00:48:46,669 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:46,684 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:46,684 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:48:46,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:46,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:48:46,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:46,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:46,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015434172] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:48:46,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:48:46,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2025-04-14 00:48:46,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610841412] [2025-04-14 00:48:46,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:48:46,873 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:48:46,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:46,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:48:46,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:48:46,874 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:46,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 1108 transitions, 27854 flow. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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) [2025-04-14 00:48:46,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:46,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:46,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:49,956 INFO L116 PetriNetUnfolderBase]: 8178/12102 cut-off events. [2025-04-14 00:48:49,956 INFO L117 PetriNetUnfolderBase]: For 371401/371401 co-relation queries the response was YES. [2025-04-14 00:48:50,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115607 conditions, 12102 events. 8178/12102 cut-off events. For 371401/371401 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 72888 event pairs, 930 based on Foata normal form. 32/12134 useless extension candidates. Maximal degree in co-relation 115314. Up to 4489 conditions per place. [2025-04-14 00:48:50,064 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1084 selfloop transitions, 423 changer transitions 0/1507 dead transitions. [2025-04-14 00:48:50,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 1507 transitions, 37829 flow [2025-04-14 00:48:50,065 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-14 00:48:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-14 00:48:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 216 transitions. [2025-04-14 00:48:50,065 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2025-04-14 00:48:50,066 INFO L175 Difference]: Start difference. First operand has 284 places, 1108 transitions, 27854 flow. Second operand 19 states and 216 transitions. [2025-04-14 00:48:50,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 1507 transitions, 37829 flow [2025-04-14 00:48:52,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1507 transitions, 37233 flow, removed 186 selfloop flow, removed 2 redundant places. [2025-04-14 00:48:52,102 INFO L231 Difference]: Finished difference. Result has 310 places, 1170 transitions, 29791 flow [2025-04-14 00:48:52,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=27241, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=29791, PETRI_PLACES=310, PETRI_TRANSITIONS=1170} [2025-04-14 00:48:52,103 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 283 predicate places. [2025-04-14 00:48:52,103 INFO L485 AbstractCegarLoop]: Abstraction has has 310 places, 1170 transitions, 29791 flow [2025-04-14 00:48:52,103 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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) [2025-04-14 00:48:52,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:52,103 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:52,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-04-14 00:48:52,304 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:52,304 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:52,305 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1937141983, now seen corresponding path program 13 times [2025-04-14 00:48:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:52,305 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668867846] [2025-04-14 00:48:52,305 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:48:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:52,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:48:52,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:52,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:48:52,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:52,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:52,367 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668867846] [2025-04-14 00:48:52,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668867846] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:52,367 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223890385] [2025-04-14 00:48:52,367 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:48:52,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:52,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:52,369 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:52,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-14 00:48:52,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:48:52,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:52,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:48:52,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:52,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-14 00:48:52,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:52,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:52,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223890385] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:48:52,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:48:52,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-04-14 00:48:52,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470022216] [2025-04-14 00:48:52,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:48:52,525 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 00:48:52,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:52,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 00:48:52,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-04-14 00:48:52,525 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:52,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 1170 transitions, 29791 flow. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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) [2025-04-14 00:48:52,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:52,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:52,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:48:55,656 INFO L116 PetriNetUnfolderBase]: 8151/12051 cut-off events. [2025-04-14 00:48:55,656 INFO L117 PetriNetUnfolderBase]: For 380386/380386 co-relation queries the response was YES. [2025-04-14 00:48:55,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118105 conditions, 12051 events. 8151/12051 cut-off events. For 380386/380386 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 72264 event pairs, 1447 based on Foata normal form. 26/12077 useless extension candidates. Maximal degree in co-relation 117767. Up to 6799 conditions per place. [2025-04-14 00:48:55,771 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 921 selfloop transitions, 330 changer transitions 0/1251 dead transitions. [2025-04-14 00:48:55,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1251 transitions, 33336 flow [2025-04-14 00:48:55,771 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:48:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:48:55,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-04-14 00:48:55,772 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2025-04-14 00:48:55,772 INFO L175 Difference]: Start difference. First operand has 310 places, 1170 transitions, 29791 flow. Second operand 7 states and 87 transitions. [2025-04-14 00:48:55,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1251 transitions, 33336 flow [2025-04-14 00:48:58,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1251 transitions, 32906 flow, removed 72 selfloop flow, removed 3 redundant places. [2025-04-14 00:48:58,461 INFO L231 Difference]: Finished difference. Result has 313 places, 1168 transitions, 30004 flow [2025-04-14 00:48:58,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=29315, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30004, PETRI_PLACES=313, PETRI_TRANSITIONS=1168} [2025-04-14 00:48:58,466 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 286 predicate places. [2025-04-14 00:48:58,466 INFO L485 AbstractCegarLoop]: Abstraction has has 313 places, 1168 transitions, 30004 flow [2025-04-14 00:48:58,466 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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) [2025-04-14 00:48:58,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:48:58,467 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:48:58,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-04-14 00:48:58,671 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-04-14 00:48:58,671 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:48:58,671 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:48:58,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1897671116, now seen corresponding path program 9 times [2025-04-14 00:48:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:48:58,672 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268861263] [2025-04-14 00:48:58,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:48:58,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:48:58,681 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:58,686 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:58,686 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:48:58,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:58,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:48:58,803 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268861263] [2025-04-14 00:48:58,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268861263] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:48:58,804 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597555359] [2025-04-14 00:48:58,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:48:58,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:48:58,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:48:58,810 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:48:58,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-14 00:48:58,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:48:58,850 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:48:58,850 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:48:58,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:48:58,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:48:58,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:48:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:58,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:48:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:48:59,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597555359] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:48:59,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:48:59,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2025-04-14 00:48:59,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651587739] [2025-04-14 00:48:59,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:48:59,014 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-14 00:48:59,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:48:59,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-14 00:48:59,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:48:59,015 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:48:59,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 1168 transitions, 30004 flow. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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) [2025-04-14 00:48:59,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:48:59,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:48:59,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:49:02,528 INFO L116 PetriNetUnfolderBase]: 9126/13351 cut-off events. [2025-04-14 00:49:02,528 INFO L117 PetriNetUnfolderBase]: For 422460/422460 co-relation queries the response was YES. [2025-04-14 00:49:02,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129662 conditions, 13351 events. 9126/13351 cut-off events. For 422460/422460 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 79961 event pairs, 1790 based on Foata normal form. 12/13363 useless extension candidates. Maximal degree in co-relation 129169. Up to 10721 conditions per place. [2025-04-14 00:49:02,837 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 960 selfloop transitions, 504 changer transitions 0/1464 dead transitions. [2025-04-14 00:49:02,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1464 transitions, 37438 flow [2025-04-14 00:49:02,837 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-14 00:49:02,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-14 00:49:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 218 transitions. [2025-04-14 00:49:02,838 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2025-04-14 00:49:02,838 INFO L175 Difference]: Start difference. First operand has 313 places, 1168 transitions, 30004 flow. Second operand 19 states and 218 transitions. [2025-04-14 00:49:02,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1464 transitions, 37438 flow [2025-04-14 00:49:05,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1464 transitions, 36788 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-04-14 00:49:05,512 INFO L231 Difference]: Finished difference. Result has 335 places, 1318 transitions, 33464 flow [2025-04-14 00:49:05,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=29362, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=33464, PETRI_PLACES=335, PETRI_TRANSITIONS=1318} [2025-04-14 00:49:05,513 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 308 predicate places. [2025-04-14 00:49:05,513 INFO L485 AbstractCegarLoop]: Abstraction has has 335 places, 1318 transitions, 33464 flow [2025-04-14 00:49:05,513 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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) [2025-04-14 00:49:05,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:49:05,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:49:05,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-14 00:49:05,714 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-04-14 00:49:05,714 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:49:05,714 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:49:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash -674257888, now seen corresponding path program 10 times [2025-04-14 00:49:05,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:49:05,714 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062521290] [2025-04-14 00:49:05,714 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:49:05,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:49:05,717 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:05,720 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:05,720 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:49:05,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:05,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:49:05,787 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062521290] [2025-04-14 00:49:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062521290] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:49:05,787 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28092113] [2025-04-14 00:49:05,787 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:49:05,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:49:05,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:49:05,789 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:49:05,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-14 00:49:05,814 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:05,830 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:05,830 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:49:05,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:05,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:49:05,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:49:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:05,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:49:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:06,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28092113] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:49:06,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:49:06,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2025-04-14 00:49:06,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60151503] [2025-04-14 00:49:06,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:49:06,187 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:49:06,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:49:06,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:49:06,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:49:06,188 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:49:06,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 1318 transitions, 33464 flow. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2025-04-14 00:49:06,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:49:06,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:49:06,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:49:10,389 INFO L116 PetriNetUnfolderBase]: 9370/13729 cut-off events. [2025-04-14 00:49:10,389 INFO L117 PetriNetUnfolderBase]: For 457212/457212 co-relation queries the response was YES. [2025-04-14 00:49:10,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138773 conditions, 13729 events. 9370/13729 cut-off events. For 457212/457212 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 82835 event pairs, 1812 based on Foata normal form. 34/13763 useless extension candidates. Maximal degree in co-relation 138232. Up to 10862 conditions per place. [2025-04-14 00:49:10,535 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 990 selfloop transitions, 537 changer transitions 0/1527 dead transitions. [2025-04-14 00:49:10,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 1527 transitions, 39603 flow [2025-04-14 00:49:10,536 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-14 00:49:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-14 00:49:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 258 transitions. [2025-04-14 00:49:10,537 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2025-04-14 00:49:10,537 INFO L175 Difference]: Start difference. First operand has 335 places, 1318 transitions, 33464 flow. Second operand 22 states and 258 transitions. [2025-04-14 00:49:10,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 1527 transitions, 39603 flow [2025-04-14 00:49:14,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1527 transitions, 38863 flow, removed 170 selfloop flow, removed 4 redundant places. [2025-04-14 00:49:14,226 INFO L231 Difference]: Finished difference. Result has 361 places, 1361 transitions, 35108 flow [2025-04-14 00:49:14,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=32736, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=790, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=35108, PETRI_PLACES=361, PETRI_TRANSITIONS=1361} [2025-04-14 00:49:14,228 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 334 predicate places. [2025-04-14 00:49:14,228 INFO L485 AbstractCegarLoop]: Abstraction has has 361 places, 1361 transitions, 35108 flow [2025-04-14 00:49:14,228 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2025-04-14 00:49:14,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:49:14,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:49:14,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-04-14 00:49:14,428 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-04-14 00:49:14,429 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:49:14,429 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:49:14,429 INFO L85 PathProgramCache]: Analyzing trace with hash 933143476, now seen corresponding path program 11 times [2025-04-14 00:49:14,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:49:14,429 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062626149] [2025-04-14 00:49:14,429 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:49:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:49:14,432 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:14,435 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:14,436 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:49:14,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:14,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:49:14,512 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062626149] [2025-04-14 00:49:14,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062626149] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:49:14,512 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921237798] [2025-04-14 00:49:14,512 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:49:14,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:49:14,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:49:14,514 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:49:14,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-14 00:49:14,541 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:14,574 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:14,574 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:49:14,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:14,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-14 00:49:14,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:49:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:14,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:49:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921237798] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:49:14,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:49:14,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-04-14 00:49:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651936338] [2025-04-14 00:49:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:49:14,626 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:49:14,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:49:14,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:49:14,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-04-14 00:49:14,627 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:49:14,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 1361 transitions, 35108 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:49:14,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:49:14,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:49:14,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:49:18,546 INFO L116 PetriNetUnfolderBase]: 9374/13737 cut-off events. [2025-04-14 00:49:18,546 INFO L117 PetriNetUnfolderBase]: For 467324/467324 co-relation queries the response was YES. [2025-04-14 00:49:18,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141433 conditions, 13737 events. 9374/13737 cut-off events. For 467324/467324 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 82738 event pairs, 2218 based on Foata normal form. 2/13739 useless extension candidates. Maximal degree in co-relation 140859. Up to 12467 conditions per place. [2025-04-14 00:49:18,713 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1158 selfloop transitions, 249 changer transitions 2/1409 dead transitions. [2025-04-14 00:49:18,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1409 transitions, 38553 flow [2025-04-14 00:49:18,714 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:49:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:49:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2025-04-14 00:49:18,714 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-04-14 00:49:18,715 INFO L175 Difference]: Start difference. First operand has 361 places, 1361 transitions, 35108 flow. Second operand 7 states and 78 transitions. [2025-04-14 00:49:18,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1409 transitions, 38553 flow [2025-04-14 00:49:22,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 1409 transitions, 37970 flow, removed 78 selfloop flow, removed 6 redundant places. [2025-04-14 00:49:22,879 INFO L231 Difference]: Finished difference. Result has 363 places, 1364 transitions, 35133 flow [2025-04-14 00:49:22,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34526, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35133, PETRI_PLACES=363, PETRI_TRANSITIONS=1364} [2025-04-14 00:49:22,880 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 336 predicate places. [2025-04-14 00:49:22,880 INFO L485 AbstractCegarLoop]: Abstraction has has 363 places, 1364 transitions, 35133 flow [2025-04-14 00:49:22,880 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:49:22,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:49:22,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:49:22,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-04-14 00:49:23,081 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:49:23,081 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:49:23,082 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:49:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash -558351436, now seen corresponding path program 12 times [2025-04-14 00:49:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:49:23,082 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622843295] [2025-04-14 00:49:23,082 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:49:23,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:49:23,085 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:23,090 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:23,090 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:49:23,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:23,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:49:23,186 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622843295] [2025-04-14 00:49:23,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622843295] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:49:23,186 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814954279] [2025-04-14 00:49:23,186 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:49:23,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:49:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:49:23,188 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:49:23,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-14 00:49:23,218 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:23,237 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:23,237 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:49:23,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:23,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:49:23,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:49:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:23,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:49:23,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814954279] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:49:23,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:49:23,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-04-14 00:49:23,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449688748] [2025-04-14 00:49:23,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:49:23,264 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:49:23,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:49:23,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:49:23,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-04-14 00:49:23,264 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:49:23,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 1364 transitions, 35133 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:49:23,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:49:23,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:49:23,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:49:27,412 INFO L116 PetriNetUnfolderBase]: 9377/13742 cut-off events. [2025-04-14 00:49:27,413 INFO L117 PetriNetUnfolderBase]: For 463503/463503 co-relation queries the response was YES. [2025-04-14 00:49:27,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141737 conditions, 13742 events. 9377/13742 cut-off events. For 463503/463503 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 82765 event pairs, 2226 based on Foata normal form. 2/13744 useless extension candidates. Maximal degree in co-relation 141160. Up to 12469 conditions per place. [2025-04-14 00:49:27,584 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1141 selfloop transitions, 284 changer transitions 2/1427 dead transitions. [2025-04-14 00:49:27,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 1427 transitions, 38922 flow [2025-04-14 00:49:27,585 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:49:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:49:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2025-04-14 00:49:27,585 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2025-04-14 00:49:27,585 INFO L175 Difference]: Start difference. First operand has 363 places, 1364 transitions, 35133 flow. Second operand 7 states and 74 transitions. [2025-04-14 00:49:27,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 1427 transitions, 38922 flow [2025-04-14 00:49:31,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1427 transitions, 38404 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-04-14 00:49:31,419 INFO L231 Difference]: Finished difference. Result has 366 places, 1367 transitions, 35317 flow [2025-04-14 00:49:31,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34633, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1081, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35317, PETRI_PLACES=366, PETRI_TRANSITIONS=1367} [2025-04-14 00:49:31,421 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 339 predicate places. [2025-04-14 00:49:31,421 INFO L485 AbstractCegarLoop]: Abstraction has has 366 places, 1367 transitions, 35317 flow [2025-04-14 00:49:31,421 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:49:31,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:49:31,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:49:31,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-14 00:49:31,621 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-14 00:49:31,621 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:49:31,622 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:49:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash -257938272, now seen corresponding path program 13 times [2025-04-14 00:49:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:49:31,622 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129576184] [2025-04-14 00:49:31,622 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:49:31,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:49:31,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:49:31,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:31,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:49:31,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:31,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:49:31,685 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129576184] [2025-04-14 00:49:31,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129576184] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:49:31,685 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83354752] [2025-04-14 00:49:31,685 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:49:31,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:49:31,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:49:31,687 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:49:31,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-14 00:49:31,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:49:31,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:31,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:49:31,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:31,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-14 00:49:31,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:49:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:31,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:49:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:31,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83354752] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:49:31,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:49:31,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2025-04-14 00:49:31,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761456374] [2025-04-14 00:49:31,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:49:31,839 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 00:49:31,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:49:31,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 00:49:31,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-04-14 00:49:31,839 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:49:31,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1367 transitions, 35317 flow. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 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) [2025-04-14 00:49:31,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:49:31,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:49:31,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:49:36,289 INFO L116 PetriNetUnfolderBase]: 9691/14279 cut-off events. [2025-04-14 00:49:36,289 INFO L117 PetriNetUnfolderBase]: For 490586/490586 co-relation queries the response was YES. [2025-04-14 00:49:36,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147216 conditions, 14279 events. 9691/14279 cut-off events. For 490586/490586 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 87775 event pairs, 1893 based on Foata normal form. 12/14291 useless extension candidates. Maximal degree in co-relation 146637. Up to 11227 conditions per place. [2025-04-14 00:49:36,489 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1152 selfloop transitions, 471 changer transitions 0/1623 dead transitions. [2025-04-14 00:49:36,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1623 transitions, 44019 flow [2025-04-14 00:49:36,490 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 00:49:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 00:49:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2025-04-14 00:49:36,491 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2025-04-14 00:49:36,491 INFO L175 Difference]: Start difference. First operand has 366 places, 1367 transitions, 35317 flow. Second operand 12 states and 138 transitions. [2025-04-14 00:49:36,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 1623 transitions, 44019 flow [2025-04-14 00:49:40,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 1623 transitions, 43441 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-04-14 00:49:40,510 INFO L231 Difference]: Finished difference. Result has 376 places, 1478 transitions, 38990 flow [2025-04-14 00:49:40,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34751, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=913, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=38990, PETRI_PLACES=376, PETRI_TRANSITIONS=1478} [2025-04-14 00:49:40,512 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 349 predicate places. [2025-04-14 00:49:40,512 INFO L485 AbstractCegarLoop]: Abstraction has has 376 places, 1478 transitions, 38990 flow [2025-04-14 00:49:40,513 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 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) [2025-04-14 00:49:40,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:49:40,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:49:40,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-04-14 00:49:40,713 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-04-14 00:49:40,713 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:49:40,714 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:49:40,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2023432012, now seen corresponding path program 14 times [2025-04-14 00:49:40,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:49:40,714 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802570612] [2025-04-14 00:49:40,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:49:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:49:40,717 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:40,720 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:40,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:49:40,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:40,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:49:40,804 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802570612] [2025-04-14 00:49:40,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802570612] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:49:40,804 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817380294] [2025-04-14 00:49:40,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:49:40,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:49:40,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:49:40,807 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:49:40,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-04-14 00:49:40,833 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:40,852 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:40,852 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:49:40,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:40,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:49:40,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:49:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:40,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:49:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:40,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817380294] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:49:40,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:49:40,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 15 [2025-04-14 00:49:40,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539212208] [2025-04-14 00:49:40,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:49:40,977 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:49:40,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:49:40,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:49:40,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:49:40,977 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:49:40,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 1478 transitions, 38990 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:49:40,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:49:40,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:49:40,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:49:46,059 INFO L116 PetriNetUnfolderBase]: 11214/16531 cut-off events. [2025-04-14 00:49:46,059 INFO L117 PetriNetUnfolderBase]: For 599349/599349 co-relation queries the response was YES. [2025-04-14 00:49:46,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175965 conditions, 16531 events. 11214/16531 cut-off events. For 599349/599349 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 103351 event pairs, 999 based on Foata normal form. 26/16557 useless extension candidates. Maximal degree in co-relation 175346. Up to 9377 conditions per place. [2025-04-14 00:49:46,358 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1239 selfloop transitions, 715 changer transitions 1/1955 dead transitions. [2025-04-14 00:49:46,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1955 transitions, 53920 flow [2025-04-14 00:49:46,358 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:49:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:49:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2025-04-14 00:49:46,359 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2025-04-14 00:49:46,359 INFO L175 Difference]: Start difference. First operand has 376 places, 1478 transitions, 38990 flow. Second operand 7 states and 95 transitions. [2025-04-14 00:49:46,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 1955 transitions, 53920 flow [2025-04-14 00:49:52,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1955 transitions, 53645 flow, removed 111 selfloop flow, removed 3 redundant places. [2025-04-14 00:49:52,155 INFO L231 Difference]: Finished difference. Result has 385 places, 1765 transitions, 50063 flow [2025-04-14 00:49:52,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=38810, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=50063, PETRI_PLACES=385, PETRI_TRANSITIONS=1765} [2025-04-14 00:49:52,156 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 358 predicate places. [2025-04-14 00:49:52,156 INFO L485 AbstractCegarLoop]: Abstraction has has 385 places, 1765 transitions, 50063 flow [2025-04-14 00:49:52,156 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:49:52,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:49:52,156 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:49:52,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-04-14 00:49:52,356 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:49:52,357 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:49:52,357 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:49:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1696068087, now seen corresponding path program 14 times [2025-04-14 00:49:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:49:52,357 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733288649] [2025-04-14 00:49:52,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:49:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:49:52,360 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:52,363 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:52,363 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:49:52,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:52,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:49:52,426 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733288649] [2025-04-14 00:49:52,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733288649] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:49:52,426 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153034836] [2025-04-14 00:49:52,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:49:52,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:49:52,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:49:52,428 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:49:52,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-04-14 00:49:52,453 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:49:52,465 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:49:52,465 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:49:52,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:49:52,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:49:52,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:49:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:52,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:49:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:49:52,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153034836] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:49:52,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:49:52,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-04-14 00:49:52,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118146410] [2025-04-14 00:49:52,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:49:52,586 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-14 00:49:52,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:49:52,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-14 00:49:52,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:49:52,587 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:49:52,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1765 transitions, 50063 flow. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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) [2025-04-14 00:49:52,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:49:52,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:49:52,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:49:59,140 INFO L116 PetriNetUnfolderBase]: 11264/16613 cut-off events. [2025-04-14 00:49:59,140 INFO L117 PetriNetUnfolderBase]: For 691874/691874 co-relation queries the response was YES. [2025-04-14 00:49:59,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185772 conditions, 16613 events. 11264/16613 cut-off events. For 691874/691874 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 104637 event pairs, 2196 based on Foata normal form. 26/16639 useless extension candidates. Maximal degree in co-relation 185111. Up to 13454 conditions per place. [2025-04-14 00:49:59,368 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1527 selfloop transitions, 506 changer transitions 0/2033 dead transitions. [2025-04-14 00:49:59,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 2033 transitions, 58899 flow [2025-04-14 00:49:59,369 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-14 00:49:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-14 00:49:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 236 transitions. [2025-04-14 00:49:59,369 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2025-04-14 00:49:59,369 INFO L175 Difference]: Start difference. First operand has 385 places, 1765 transitions, 50063 flow. Second operand 22 states and 236 transitions. [2025-04-14 00:49:59,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 2033 transitions, 58899 flow [2025-04-14 00:50:06,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 2033 transitions, 58188 flow, removed 86 selfloop flow, removed 2 redundant places. [2025-04-14 00:50:06,405 INFO L231 Difference]: Finished difference. Result has 407 places, 1807 transitions, 51690 flow [2025-04-14 00:50:06,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=49424, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=51690, PETRI_PLACES=407, PETRI_TRANSITIONS=1807} [2025-04-14 00:50:06,407 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 380 predicate places. [2025-04-14 00:50:06,407 INFO L485 AbstractCegarLoop]: Abstraction has has 407 places, 1807 transitions, 51690 flow [2025-04-14 00:50:06,407 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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) [2025-04-14 00:50:06,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:50:06,407 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:50:06,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-04-14 00:50:06,608 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:50:06,608 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:50:06,609 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:50:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2094165590, now seen corresponding path program 15 times [2025-04-14 00:50:06,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:50:06,609 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769885332] [2025-04-14 00:50:06,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:50:06,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:50:06,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:50:06,616 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:50:06,616 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:50:06,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:50:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:06,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:50:06,700 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769885332] [2025-04-14 00:50:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769885332] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:50:06,700 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818393882] [2025-04-14 00:50:06,700 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:50:06,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:50:06,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:50:06,702 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:50:06,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-04-14 00:50:06,731 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:50:06,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:50:06,747 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:50:06,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:50:06,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:50:06,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:50:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:06,776 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:50:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818393882] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:50:06,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:50:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-04-14 00:50:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552839815] [2025-04-14 00:50:06,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:50:06,776 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:50:06,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:50:06,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:50:06,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-04-14 00:50:06,777 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:50:06,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 1807 transitions, 51690 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:50:06,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:50:06,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:50:06,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:50:13,385 INFO L116 PetriNetUnfolderBase]: 11268/16621 cut-off events. [2025-04-14 00:50:13,386 INFO L117 PetriNetUnfolderBase]: For 668491/668491 co-relation queries the response was YES. [2025-04-14 00:50:13,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187394 conditions, 16621 events. 11268/16621 cut-off events. For 668491/668491 co-relation queries the response was YES. Maximal size of possible extension queue 1144. Compared 104519 event pairs, 2496 based on Foata normal form. 2/16623 useless extension candidates. Maximal degree in co-relation 186723. Up to 15293 conditions per place. [2025-04-14 00:50:13,717 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1565 selfloop transitions, 280 changer transitions 2/1847 dead transitions. [2025-04-14 00:50:13,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 1847 transitions, 55925 flow [2025-04-14 00:50:13,718 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:50:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:50:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2025-04-14 00:50:13,718 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-04-14 00:50:13,718 INFO L175 Difference]: Start difference. First operand has 407 places, 1807 transitions, 51690 flow. Second operand 7 states and 77 transitions. [2025-04-14 00:50:13,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 1847 transitions, 55925 flow [2025-04-14 00:50:20,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 1847 transitions, 55198 flow, removed 36 selfloop flow, removed 6 redundant places. [2025-04-14 00:50:20,038 INFO L231 Difference]: Finished difference. Result has 409 places, 1813 transitions, 51737 flow [2025-04-14 00:50:20,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=50973, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=51737, PETRI_PLACES=409, PETRI_TRANSITIONS=1813} [2025-04-14 00:50:20,040 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 382 predicate places. [2025-04-14 00:50:20,040 INFO L485 AbstractCegarLoop]: Abstraction has has 409 places, 1813 transitions, 51737 flow [2025-04-14 00:50:20,040 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:50:20,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:50:20,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:50:20,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-04-14 00:50:20,241 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:50:20,241 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:50:20,241 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:50:20,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1600051846, now seen corresponding path program 3 times [2025-04-14 00:50:20,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:50:20,242 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513593313] [2025-04-14 00:50:20,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:50:20,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:50:20,244 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:50:20,248 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:50:20,248 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:50:20,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:50:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:20,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:50:20,325 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513593313] [2025-04-14 00:50:20,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513593313] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:50:20,325 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51565768] [2025-04-14 00:50:20,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:50:20,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:50:20,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:50:20,327 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:50:20,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-04-14 00:50:20,352 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:50:20,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:50:20,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:50:20,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:50:20,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:50:20,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:50:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:20,395 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:50:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51565768] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:50:20,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:50:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2025-04-14 00:50:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016082595] [2025-04-14 00:50:20,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:50:20,622 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:50:20,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:50:20,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:50:20,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:50:20,622 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:50:20,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 1813 transitions, 51737 flow. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2025-04-14 00:50:20,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:50:20,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:50:20,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:50:27,162 INFO L116 PetriNetUnfolderBase]: 11303/16680 cut-off events. [2025-04-14 00:50:27,162 INFO L117 PetriNetUnfolderBase]: For 672122/672122 co-relation queries the response was YES. [2025-04-14 00:50:27,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186905 conditions, 16680 events. 11303/16680 cut-off events. For 672122/672122 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 105050 event pairs, 2495 based on Foata normal form. 10/16690 useless extension candidates. Maximal degree in co-relation 186224. Up to 15299 conditions per place. [2025-04-14 00:50:27,395 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1582 selfloop transitions, 299 changer transitions 0/1881 dead transitions. [2025-04-14 00:50:27,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1881 transitions, 56328 flow [2025-04-14 00:50:27,396 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 00:50:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 00:50:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2025-04-14 00:50:27,397 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-04-14 00:50:27,397 INFO L175 Difference]: Start difference. First operand has 409 places, 1813 transitions, 51737 flow. Second operand 11 states and 116 transitions. [2025-04-14 00:50:27,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 1881 transitions, 56328 flow [2025-04-14 00:50:33,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 1881 transitions, 55550 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-04-14 00:50:33,510 INFO L231 Difference]: Finished difference. Result has 419 places, 1829 transitions, 51904 flow [2025-04-14 00:50:33,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=50965, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=51904, PETRI_PLACES=419, PETRI_TRANSITIONS=1829} [2025-04-14 00:50:33,511 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 392 predicate places. [2025-04-14 00:50:33,511 INFO L485 AbstractCegarLoop]: Abstraction has has 419 places, 1829 transitions, 51904 flow [2025-04-14 00:50:33,512 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2025-04-14 00:50:33,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:50:33,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:50:33,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-04-14 00:50:33,712 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:50:33,712 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:50:33,713 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:50:33,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1541763897, now seen corresponding path program 15 times [2025-04-14 00:50:33,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:50:33,713 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382167169] [2025-04-14 00:50:33,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:50:33,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:50:33,716 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:50:33,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:50:33,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:50:33,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:50:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:33,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:50:33,789 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382167169] [2025-04-14 00:50:33,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382167169] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:50:33,789 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310358012] [2025-04-14 00:50:33,789 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:50:33,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:50:33,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:50:33,791 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:50:33,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-04-14 00:50:33,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:50:33,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:50:33,839 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:50:33,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:50:33,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:50:33,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:50:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:33,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:50:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310358012] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:50:34,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:50:34,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-04-14 00:50:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036410229] [2025-04-14 00:50:34,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:50:34,003 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:50:34,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:50:34,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:50:34,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:50:34,003 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:50:34,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 1829 transitions, 51904 flow. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2025-04-14 00:50:34,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:50:34,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:50:34,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:50:40,517 INFO L116 PetriNetUnfolderBase]: 11264/16663 cut-off events. [2025-04-14 00:50:40,517 INFO L117 PetriNetUnfolderBase]: For 674858/674858 co-relation queries the response was YES. [2025-04-14 00:50:40,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187444 conditions, 16663 events. 11264/16663 cut-off events. For 674858/674858 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 105728 event pairs, 2197 based on Foata normal form. 89/16752 useless extension candidates. Maximal degree in co-relation 186759. Up to 13320 conditions per place. [2025-04-14 00:50:40,708 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1526 selfloop transitions, 538 changer transitions 0/2064 dead transitions. [2025-04-14 00:50:40,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 2064 transitions, 59886 flow [2025-04-14 00:50:40,709 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-14 00:50:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-14 00:50:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 220 transitions. [2025-04-14 00:50:40,709 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2025-04-14 00:50:40,709 INFO L175 Difference]: Start difference. First operand has 419 places, 1829 transitions, 51904 flow. Second operand 19 states and 220 transitions. [2025-04-14 00:50:40,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 2064 transitions, 59886 flow [2025-04-14 00:50:46,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 2064 transitions, 59515 flow, removed 35 selfloop flow, removed 4 redundant places. [2025-04-14 00:50:46,623 INFO L231 Difference]: Finished difference. Result has 435 places, 1836 transitions, 52876 flow [2025-04-14 00:50:46,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=51533, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=52876, PETRI_PLACES=435, PETRI_TRANSITIONS=1836} [2025-04-14 00:50:46,624 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 408 predicate places. [2025-04-14 00:50:46,624 INFO L485 AbstractCegarLoop]: Abstraction has has 435 places, 1836 transitions, 52876 flow [2025-04-14 00:50:46,624 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2025-04-14 00:50:46,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:50:46,624 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:50:46,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-04-14 00:50:46,825 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-04-14 00:50:46,825 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:50:46,825 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:50:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1000504642, now seen corresponding path program 16 times [2025-04-14 00:50:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:50:46,826 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723138115] [2025-04-14 00:50:46,826 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:50:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:50:46,828 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:50:46,830 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:50:46,830 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:50:46,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:50:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:46,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:50:46,896 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723138115] [2025-04-14 00:50:46,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723138115] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:50:46,896 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181524781] [2025-04-14 00:50:46,896 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:50:46,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:50:46,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:50:46,898 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:50:46,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-04-14 00:50:46,924 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:50:46,936 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:50:46,936 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:50:46,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:50:46,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:50:46,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:50:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:47,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:50:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:50:47,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181524781] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:50:47,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:50:47,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2025-04-14 00:50:47,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212290145] [2025-04-14 00:50:47,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:50:47,093 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:50:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:50:47,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:50:47,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:50:47,094 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:50:47,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 1836 transitions, 52876 flow. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 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) [2025-04-14 00:50:47,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:50:47,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:50:47,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:50:53,794 INFO L116 PetriNetUnfolderBase]: 11310/16710 cut-off events. [2025-04-14 00:50:53,795 INFO L117 PetriNetUnfolderBase]: For 679215/679215 co-relation queries the response was YES. [2025-04-14 00:50:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190802 conditions, 16710 events. 11310/16710 cut-off events. For 679215/679215 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 105701 event pairs, 2099 based on Foata normal form. 56/16766 useless extension candidates. Maximal degree in co-relation 190106. Up to 13480 conditions per place. [2025-04-14 00:50:53,989 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1378 selfloop transitions, 716 changer transitions 0/2094 dead transitions. [2025-04-14 00:50:53,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 2094 transitions, 61613 flow [2025-04-14 00:50:53,989 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-14 00:50:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-04-14 00:50:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 267 transitions. [2025-04-14 00:50:53,990 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2025-04-14 00:50:53,990 INFO L175 Difference]: Start difference. First operand has 435 places, 1836 transitions, 52876 flow. Second operand 24 states and 267 transitions. [2025-04-14 00:50:53,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 2094 transitions, 61613 flow [2025-04-14 00:51:00,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 2094 transitions, 60537 flow, removed 20 selfloop flow, removed 14 redundant places. [2025-04-14 00:51:00,158 INFO L231 Difference]: Finished difference. Result has 450 places, 1885 transitions, 54805 flow [2025-04-14 00:51:00,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=51696, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=664, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=54805, PETRI_PLACES=450, PETRI_TRANSITIONS=1885} [2025-04-14 00:51:00,159 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 423 predicate places. [2025-04-14 00:51:00,160 INFO L485 AbstractCegarLoop]: Abstraction has has 450 places, 1885 transitions, 54805 flow [2025-04-14 00:51:00,160 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 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) [2025-04-14 00:51:00,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:51:00,160 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:51:00,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-04-14 00:51:00,360 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:51:00,360 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:51:00,361 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:51:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash -223451964, now seen corresponding path program 4 times [2025-04-14 00:51:00,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:51:00,361 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145825203] [2025-04-14 00:51:00,361 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:51:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:51:00,364 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:51:00,367 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:51:00,367 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:51:00,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:00,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:51:00,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145825203] [2025-04-14 00:51:00,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145825203] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:51:00,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:51:00,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 00:51:00,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212496452] [2025-04-14 00:51:00,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:51:00,442 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:51:00,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:51:00,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:51:00,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-14 00:51:00,442 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:51:00,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 1885 transitions, 54805 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:51:00,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:51:00,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:51:00,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:51:06,765 INFO L116 PetriNetUnfolderBase]: 11288/16678 cut-off events. [2025-04-14 00:51:06,765 INFO L117 PetriNetUnfolderBase]: For 688129/688129 co-relation queries the response was YES. [2025-04-14 00:51:06,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192712 conditions, 16678 events. 11288/16678 cut-off events. For 688129/688129 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 105310 event pairs, 2483 based on Foata normal form. 16/16694 useless extension candidates. Maximal degree in co-relation 192014. Up to 15212 conditions per place. [2025-04-14 00:51:06,992 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 1631 selfloop transitions, 287 changer transitions 14/1932 dead transitions. [2025-04-14 00:51:06,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1932 transitions, 59081 flow [2025-04-14 00:51:06,992 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:51:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:51:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2025-04-14 00:51:06,993 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-04-14 00:51:06,993 INFO L175 Difference]: Start difference. First operand has 450 places, 1885 transitions, 54805 flow. Second operand 7 states and 86 transitions. [2025-04-14 00:51:06,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1932 transitions, 59081 flow [2025-04-14 00:51:13,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 1932 transitions, 58172 flow, removed 160 selfloop flow, removed 11 redundant places. [2025-04-14 00:51:13,647 INFO L231 Difference]: Finished difference. Result has 446 places, 1879 transitions, 54281 flow [2025-04-14 00:51:13,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=53811, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=54281, PETRI_PLACES=446, PETRI_TRANSITIONS=1879} [2025-04-14 00:51:13,649 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 419 predicate places. [2025-04-14 00:51:13,649 INFO L485 AbstractCegarLoop]: Abstraction has has 446 places, 1879 transitions, 54281 flow [2025-04-14 00:51:13,649 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:51:13,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:51:13,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:51:13,649 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-04-14 00:51:13,650 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:51:13,650 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:51:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash -538576431, now seen corresponding path program 16 times [2025-04-14 00:51:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:51:13,650 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380013714] [2025-04-14 00:51:13,650 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:51:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:51:13,653 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:51:13,656 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:51:13,656 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:51:13,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:13,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:51:13,715 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380013714] [2025-04-14 00:51:13,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380013714] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:51:13,715 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208568962] [2025-04-14 00:51:13,715 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:51:13,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:51:13,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:51:13,717 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:51:13,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-04-14 00:51:13,744 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:51:13,756 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:51:13,756 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:51:13,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:13,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:51:13,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:51:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:13,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:51:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:13,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208568962] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:51:13,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:51:13,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2025-04-14 00:51:13,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299622871] [2025-04-14 00:51:13,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:51:13,974 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:51:13,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:51:13,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:51:13,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:51:13,975 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:51:13,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1879 transitions, 54281 flow. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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) [2025-04-14 00:51:13,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:51:13,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:51:13,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:51:21,942 INFO L116 PetriNetUnfolderBase]: 11512/17030 cut-off events. [2025-04-14 00:51:21,942 INFO L117 PetriNetUnfolderBase]: For 703888/703888 co-relation queries the response was YES. [2025-04-14 00:51:22,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196107 conditions, 17030 events. 11512/17030 cut-off events. For 703888/703888 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 108568 event pairs, 2164 based on Foata normal form. 113/17143 useless extension candidates. Maximal degree in co-relation 195714. Up to 13394 conditions per place. [2025-04-14 00:51:22,303 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1556 selfloop transitions, 627 changer transitions 0/2183 dead transitions. [2025-04-14 00:51:22,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 2183 transitions, 64599 flow [2025-04-14 00:51:22,303 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-14 00:51:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-04-14 00:51:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 222 transitions. [2025-04-14 00:51:22,304 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-04-14 00:51:22,304 INFO L175 Difference]: Start difference. First operand has 446 places, 1879 transitions, 54281 flow. Second operand 20 states and 222 transitions. [2025-04-14 00:51:22,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 2183 transitions, 64599 flow [2025-04-14 00:51:28,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 2183 transitions, 63989 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-04-14 00:51:28,956 INFO L231 Difference]: Finished difference. Result has 470 places, 2017 transitions, 58999 flow [2025-04-14 00:51:28,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=53708, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=58999, PETRI_PLACES=470, PETRI_TRANSITIONS=2017} [2025-04-14 00:51:28,958 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 443 predicate places. [2025-04-14 00:51:28,959 INFO L485 AbstractCegarLoop]: Abstraction has has 470 places, 2017 transitions, 58999 flow [2025-04-14 00:51:28,959 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 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) [2025-04-14 00:51:28,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:51:28,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:51:28,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-04-14 00:51:29,159 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:51:29,159 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:51:29,160 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:51:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1349770099, now seen corresponding path program 17 times [2025-04-14 00:51:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:51:29,160 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306220655] [2025-04-14 00:51:29,160 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:51:29,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:51:29,163 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:51:29,166 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:51:29,166 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:51:29,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:29,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:51:29,238 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306220655] [2025-04-14 00:51:29,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306220655] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:51:29,238 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687727232] [2025-04-14 00:51:29,238 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:51:29,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:51:29,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:51:29,240 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:51:29,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-04-14 00:51:29,265 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:51:29,277 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:51:29,277 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:51:29,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:29,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:51:29,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:51:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:29,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:51:29,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687727232] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:51:29,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:51:29,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-04-14 00:51:29,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706454022] [2025-04-14 00:51:29,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:51:29,322 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:51:29,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:51:29,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:51:29,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-04-14 00:51:29,322 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:51:29,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 2017 transitions, 58999 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:51:29,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:51:29,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:51:29,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:51:36,696 INFO L116 PetriNetUnfolderBase]: 11511/17032 cut-off events. [2025-04-14 00:51:36,697 INFO L117 PetriNetUnfolderBase]: For 725919/725919 co-relation queries the response was YES. [2025-04-14 00:51:36,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201532 conditions, 17032 events. 11511/17032 cut-off events. For 725919/725919 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 108347 event pairs, 2593 based on Foata normal form. 3/17035 useless extension candidates. Maximal degree in co-relation 200796. Up to 15676 conditions per place. [2025-04-14 00:51:36,985 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1748 selfloop transitions, 301 changer transitions 3/2052 dead transitions. [2025-04-14 00:51:36,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 2052 transitions, 63501 flow [2025-04-14 00:51:36,985 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:51:36,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:51:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2025-04-14 00:51:36,986 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2025-04-14 00:51:36,986 INFO L175 Difference]: Start difference. First operand has 470 places, 2017 transitions, 58999 flow. Second operand 7 states and 79 transitions. [2025-04-14 00:51:36,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 2052 transitions, 63501 flow [2025-04-14 00:51:44,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 2052 transitions, 62904 flow, removed 259 selfloop flow, removed 4 redundant places. [2025-04-14 00:51:44,863 INFO L231 Difference]: Finished difference. Result has 473 places, 2016 transitions, 58991 flow [2025-04-14 00:51:44,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=58402, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=58991, PETRI_PLACES=473, PETRI_TRANSITIONS=2016} [2025-04-14 00:51:44,865 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 446 predicate places. [2025-04-14 00:51:44,865 INFO L485 AbstractCegarLoop]: Abstraction has has 473 places, 2016 transitions, 58991 flow [2025-04-14 00:51:44,865 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:51:44,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:51:44,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:51:44,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-04-14 00:51:45,065 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-14 00:51:45,066 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:51:45,066 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:51:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1317015991, now seen corresponding path program 18 times [2025-04-14 00:51:45,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:51:45,066 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940313807] [2025-04-14 00:51:45,067 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:51:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:51:45,070 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:51:45,076 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:51:45,076 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:51:45,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:51:45,159 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940313807] [2025-04-14 00:51:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940313807] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:51:45,159 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486385228] [2025-04-14 00:51:45,160 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:51:45,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:51:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:51:45,161 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:51:45,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-04-14 00:51:45,187 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:51:45,207 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:51:45,207 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:51:45,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:51:45,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:51:45,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:51:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:45,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:51:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:51:45,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486385228] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:51:45,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:51:45,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-04-14 00:51:45,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510357119] [2025-04-14 00:51:45,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:51:45,351 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-14 00:51:45,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:51:45,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-14 00:51:45,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-04-14 00:51:45,351 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:51:45,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 2016 transitions, 58991 flow. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 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) [2025-04-14 00:51:45,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:51:45,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:51:45,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:51:53,284 INFO L116 PetriNetUnfolderBase]: 11657/17307 cut-off events. [2025-04-14 00:51:53,284 INFO L117 PetriNetUnfolderBase]: For 741213/741213 co-relation queries the response was YES. [2025-04-14 00:51:53,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204210 conditions, 17307 events. 11657/17307 cut-off events. For 741213/741213 co-relation queries the response was YES. Maximal size of possible extension queue 1220. Compared 111440 event pairs, 2283 based on Foata normal form. 14/17318 useless extension candidates. Maximal degree in co-relation 203780. Up to 13799 conditions per place. [2025-04-14 00:51:53,565 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1676 selfloop transitions, 590 changer transitions 0/2266 dead transitions. [2025-04-14 00:51:53,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 2266 transitions, 68051 flow [2025-04-14 00:51:53,566 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-14 00:51:53,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-04-14 00:51:53,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 244 transitions. [2025-04-14 00:51:53,567 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2025-04-14 00:51:53,567 INFO L175 Difference]: Start difference. First operand has 473 places, 2016 transitions, 58991 flow. Second operand 24 states and 244 transitions. [2025-04-14 00:51:53,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 2266 transitions, 68051 flow [2025-04-14 00:52:01,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 2266 transitions, 67402 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-04-14 00:52:01,579 INFO L231 Difference]: Finished difference. Result has 498 places, 2105 transitions, 61873 flow [2025-04-14 00:52:01,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=58392, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=507, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=61873, PETRI_PLACES=498, PETRI_TRANSITIONS=2105} [2025-04-14 00:52:01,581 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 471 predicate places. [2025-04-14 00:52:01,581 INFO L485 AbstractCegarLoop]: Abstraction has has 498 places, 2105 transitions, 61873 flow [2025-04-14 00:52:01,581 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 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) [2025-04-14 00:52:01,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:52:01,582 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:52:01,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-04-14 00:52:01,782 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-04-14 00:52:01,782 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:52:01,783 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:52:01,783 INFO L85 PathProgramCache]: Analyzing trace with hash -139941904, now seen corresponding path program 17 times [2025-04-14 00:52:01,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:52:01,783 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450902513] [2025-04-14 00:52:01,783 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:52:01,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:52:01,786 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:52:01,789 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:52:01,789 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:52:01,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:52:01,859 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450902513] [2025-04-14 00:52:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450902513] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:52:01,859 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807324195] [2025-04-14 00:52:01,859 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:52:01,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:52:01,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:52:01,861 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:52:01,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-04-14 00:52:01,886 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:52:01,908 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:52:01,908 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:52:01,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:01,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-14 00:52:01,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:52:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:01,937 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:52:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807324195] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:52:01,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:52:01,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-04-14 00:52:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751422772] [2025-04-14 00:52:01,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:52:01,937 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:52:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:52:01,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:52:01,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-04-14 00:52:01,938 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:52:01,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 2105 transitions, 61873 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:52:01,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:52:01,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:52:01,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:52:09,937 INFO L116 PetriNetUnfolderBase]: 11656/17308 cut-off events. [2025-04-14 00:52:09,938 INFO L117 PetriNetUnfolderBase]: For 756136/756136 co-relation queries the response was YES. [2025-04-14 00:52:10,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207806 conditions, 17308 events. 11656/17308 cut-off events. For 756136/756136 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 111207 event pairs, 2623 based on Foata normal form. 2/17307 useless extension candidates. Maximal degree in co-relation 207182. Up to 15910 conditions per place. [2025-04-14 00:52:10,231 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1811 selfloop transitions, 325 changer transitions 2/2138 dead transitions. [2025-04-14 00:52:10,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 2138 transitions, 66553 flow [2025-04-14 00:52:10,232 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:52:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:52:10,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2025-04-14 00:52:10,232 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-04-14 00:52:10,232 INFO L175 Difference]: Start difference. First operand has 498 places, 2105 transitions, 61873 flow. Second operand 7 states and 77 transitions. [2025-04-14 00:52:10,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 2138 transitions, 66553 flow [2025-04-14 00:52:19,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 2138 transitions, 65730 flow, removed 153 selfloop flow, removed 9 redundant places. [2025-04-14 00:52:19,135 INFO L231 Difference]: Finished difference. Result has 495 places, 2104 transitions, 61673 flow [2025-04-14 00:52:19,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=61050, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1780, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=61673, PETRI_PLACES=495, PETRI_TRANSITIONS=2104} [2025-04-14 00:52:19,137 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 468 predicate places. [2025-04-14 00:52:19,137 INFO L485 AbstractCegarLoop]: Abstraction has has 495 places, 2104 transitions, 61673 flow [2025-04-14 00:52:19,137 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:52:19,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:52:19,137 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:52:19,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-04-14 00:52:19,338 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-04-14 00:52:19,338 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:52:19,339 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:52:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1854733735, now seen corresponding path program 19 times [2025-04-14 00:52:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:52:19,339 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292791613] [2025-04-14 00:52:19,339 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:52:19,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:52:19,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:52:19,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:52:19,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:52:19,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:19,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:52:19,394 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292791613] [2025-04-14 00:52:19,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292791613] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:52:19,394 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119319986] [2025-04-14 00:52:19,394 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:52:19,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:52:19,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:52:19,396 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:52:19,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-04-14 00:52:19,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:52:19,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:52:19,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:52:19,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:19,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-14 00:52:19,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:52:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:19,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:52:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:19,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119319986] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:52:19,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:52:19,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-14 00:52:19,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251924674] [2025-04-14 00:52:19,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:52:19,542 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-14 00:52:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:52:19,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-14 00:52:19,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-04-14 00:52:19,543 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:52:19,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 2104 transitions, 61673 flow. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 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) [2025-04-14 00:52:19,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:52:19,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:52:19,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:52:27,450 INFO L116 PetriNetUnfolderBase]: 11749/17480 cut-off events. [2025-04-14 00:52:27,450 INFO L117 PetriNetUnfolderBase]: For 767050/767050 co-relation queries the response was YES. [2025-04-14 00:52:27,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209859 conditions, 17480 events. 11749/17480 cut-off events. For 767050/767050 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 112862 event pairs, 2627 based on Foata normal form. 85/17562 useless extension candidates. Maximal degree in co-relation 209256. Up to 15835 conditions per place. [2025-04-14 00:52:27,711 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1760 selfloop transitions, 446 changer transitions 0/2206 dead transitions. [2025-04-14 00:52:27,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 2206 transitions, 68297 flow [2025-04-14 00:52:27,711 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 00:52:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 00:52:27,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2025-04-14 00:52:27,712 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2025-04-14 00:52:27,712 INFO L175 Difference]: Start difference. First operand has 495 places, 2104 transitions, 61673 flow. Second operand 11 states and 124 transitions. [2025-04-14 00:52:27,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 2206 transitions, 68297 flow [2025-04-14 00:52:36,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 2206 transitions, 67614 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-04-14 00:52:36,604 INFO L231 Difference]: Finished difference. Result has 503 places, 2150 transitions, 63575 flow [2025-04-14 00:52:36,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=60952, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=63575, PETRI_PLACES=503, PETRI_TRANSITIONS=2150} [2025-04-14 00:52:36,606 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 476 predicate places. [2025-04-14 00:52:36,606 INFO L485 AbstractCegarLoop]: Abstraction has has 503 places, 2150 transitions, 63575 flow [2025-04-14 00:52:36,606 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 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) [2025-04-14 00:52:36,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:52:36,606 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:52:36,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-04-14 00:52:36,806 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:52:36,807 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:52:36,807 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:52:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1556658329, now seen corresponding path program 20 times [2025-04-14 00:52:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:52:36,807 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921472795] [2025-04-14 00:52:36,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:52:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:52:36,810 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:52:36,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:52:36,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:52:36,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:36,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:52:36,878 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921472795] [2025-04-14 00:52:36,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921472795] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:52:36,878 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48557822] [2025-04-14 00:52:36,878 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:52:36,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:52:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:52:36,880 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:52:36,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-04-14 00:52:36,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:52:36,920 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:52:36,921 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:52:36,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:36,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:52:36,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:52:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:36,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:52:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:37,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48557822] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:52:37,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:52:37,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-04-14 00:52:37,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319375226] [2025-04-14 00:52:37,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:52:37,039 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-14 00:52:37,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:52:37,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-14 00:52:37,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-04-14 00:52:37,040 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:52:37,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 2150 transitions, 63575 flow. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 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) [2025-04-14 00:52:37,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:52:37,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:52:37,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:52:45,505 INFO L116 PetriNetUnfolderBase]: 11851/17622 cut-off events. [2025-04-14 00:52:45,506 INFO L117 PetriNetUnfolderBase]: For 778235/778235 co-relation queries the response was YES. [2025-04-14 00:52:45,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212710 conditions, 17622 events. 11851/17622 cut-off events. For 778235/778235 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 114144 event pairs, 2372 based on Foata normal form. 36/17655 useless extension candidates. Maximal degree in co-relation 212104. Up to 14117 conditions per place. [2025-04-14 00:52:45,791 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1697 selfloop transitions, 658 changer transitions 0/2355 dead transitions. [2025-04-14 00:52:45,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 2355 transitions, 72200 flow [2025-04-14 00:52:45,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-14 00:52:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-04-14 00:52:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 199 transitions. [2025-04-14 00:52:45,792 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43640350877192985 [2025-04-14 00:52:45,792 INFO L175 Difference]: Start difference. First operand has 503 places, 2150 transitions, 63575 flow. Second operand 19 states and 199 transitions. [2025-04-14 00:52:45,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 2355 transitions, 72200 flow [2025-04-14 00:52:54,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 2355 transitions, 72048 flow, removed 52 selfloop flow, removed 3 redundant places. [2025-04-14 00:52:54,580 INFO L231 Difference]: Finished difference. Result has 525 places, 2211 transitions, 66587 flow [2025-04-14 00:52:54,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=63243, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=66587, PETRI_PLACES=525, PETRI_TRANSITIONS=2211} [2025-04-14 00:52:54,582 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 498 predicate places. [2025-04-14 00:52:54,582 INFO L485 AbstractCegarLoop]: Abstraction has has 525 places, 2211 transitions, 66587 flow [2025-04-14 00:52:54,582 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 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) [2025-04-14 00:52:54,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:52:54,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:52:54,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-04-14 00:52:54,784 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:52:54,784 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:52:54,785 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:52:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1836458178, now seen corresponding path program 18 times [2025-04-14 00:52:54,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:52:54,785 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719555288] [2025-04-14 00:52:54,785 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:52:54,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:52:54,789 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:52:54,792 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:52:54,792 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:52:54,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:54,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:54,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:52:54,877 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719555288] [2025-04-14 00:52:54,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719555288] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:52:54,877 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261002622] [2025-04-14 00:52:54,877 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:52:54,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:52:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:52:54,879 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:52:54,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-04-14 00:52:54,905 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:52:54,921 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:52:54,921 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:52:54,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:54,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-14 00:52:54,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:52:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:55,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:52:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:52:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261002622] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 00:52:55,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 00:52:55,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 19 [2025-04-14 00:52:55,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917361639] [2025-04-14 00:52:55,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:52:55,127 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:52:55,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:52:55,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:52:55,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2025-04-14 00:52:55,128 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:52:55,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 2211 transitions, 66587 flow. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:52:55,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:52:55,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:52:55,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:53:03,628 INFO L116 PetriNetUnfolderBase]: 11871/17650 cut-off events. [2025-04-14 00:53:03,628 INFO L117 PetriNetUnfolderBase]: For 789081/789081 co-relation queries the response was YES. [2025-04-14 00:53:03,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216431 conditions, 17650 events. 11871/17650 cut-off events. For 789081/789081 co-relation queries the response was YES. Maximal size of possible extension queue 1248. Compared 113847 event pairs, 2736 based on Foata normal form. 17/17664 useless extension candidates. Maximal degree in co-relation 215855. Up to 16550 conditions per place. [2025-04-14 00:53:04,046 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1944 selfloop transitions, 336 changer transitions 0/2280 dead transitions. [2025-04-14 00:53:04,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 2280 transitions, 72492 flow [2025-04-14 00:53:04,047 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 00:53:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 00:53:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2025-04-14 00:53:04,047 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2025-04-14 00:53:04,047 INFO L175 Difference]: Start difference. First operand has 525 places, 2211 transitions, 66587 flow. Second operand 8 states and 83 transitions. [2025-04-14 00:53:04,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 2280 transitions, 72492 flow [2025-04-14 00:53:13,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 2280 transitions, 71670 flow, removed 63 selfloop flow, removed 5 redundant places. [2025-04-14 00:53:13,742 INFO L231 Difference]: Finished difference. Result has 532 places, 2244 transitions, 67777 flow [2025-04-14 00:53:13,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=65702, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=67777, PETRI_PLACES=532, PETRI_TRANSITIONS=2244} [2025-04-14 00:53:13,744 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 505 predicate places. [2025-04-14 00:53:13,744 INFO L485 AbstractCegarLoop]: Abstraction has has 532 places, 2244 transitions, 67777 flow [2025-04-14 00:53:13,744 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2025-04-14 00:53:13,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:53:13,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:53:13,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-04-14 00:53:13,944 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-04-14 00:53:13,945 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:53:13,945 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:53:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1722587874, now seen corresponding path program 19 times [2025-04-14 00:53:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:53:13,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779283628] [2025-04-14 00:53:13,945 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:53:13,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:53:13,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:53:13,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:53:13,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:53:13,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:53:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:53:13,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:53:13,995 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779283628] [2025-04-14 00:53:13,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779283628] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:53:13,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149340284] [2025-04-14 00:53:13,996 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:53:13,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:53:13,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:53:13,997 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:53:13,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-04-14 00:53:14,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:53:14,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:53:14,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:53:14,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:53:14,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:53:14,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:53:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:53:14,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:53:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:53:14,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149340284] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:53:14,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:53:14,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-14 00:53:14,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187956661] [2025-04-14 00:53:14,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:53:14,184 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-14 00:53:14,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:53:14,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-14 00:53:14,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-04-14 00:53:14,184 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:53:14,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 2244 transitions, 67777 flow. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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) [2025-04-14 00:53:14,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:53:14,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:53:14,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:53:23,218 INFO L116 PetriNetUnfolderBase]: 12034/17930 cut-off events. [2025-04-14 00:53:23,218 INFO L117 PetriNetUnfolderBase]: For 814522/814522 co-relation queries the response was YES. [2025-04-14 00:53:23,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220580 conditions, 17930 events. 12034/17930 cut-off events. For 814522/814522 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 116701 event pairs, 2502 based on Foata normal form. 16/17943 useless extension candidates. Maximal degree in co-relation 220096. Up to 15544 conditions per place. [2025-04-14 00:53:23,532 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1761 selfloop transitions, 660 changer transitions 0/2421 dead transitions. [2025-04-14 00:53:23,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 2421 transitions, 76022 flow [2025-04-14 00:53:23,533 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-14 00:53:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-14 00:53:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 234 transitions. [2025-04-14 00:53:23,534 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2025-04-14 00:53:23,534 INFO L175 Difference]: Start difference. First operand has 532 places, 2244 transitions, 67777 flow. Second operand 22 states and 234 transitions. [2025-04-14 00:53:23,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 2421 transitions, 76022 flow [2025-04-14 00:53:33,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 2421 transitions, 75607 flow, removed 62 selfloop flow, removed 2 redundant places. [2025-04-14 00:53:33,699 INFO L231 Difference]: Finished difference. Result has 560 places, 2314 transitions, 71277 flow [2025-04-14 00:53:33,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67362, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=71277, PETRI_PLACES=560, PETRI_TRANSITIONS=2314} [2025-04-14 00:53:33,702 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 533 predicate places. [2025-04-14 00:53:33,702 INFO L485 AbstractCegarLoop]: Abstraction has has 560 places, 2314 transitions, 71277 flow [2025-04-14 00:53:33,702 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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) [2025-04-14 00:53:33,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:53:33,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:53:33,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-04-14 00:53:33,902 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-04-14 00:53:33,903 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:53:33,903 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:53:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1424756562, now seen corresponding path program 20 times [2025-04-14 00:53:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:53:33,903 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194425705] [2025-04-14 00:53:33,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:53:33,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:53:33,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:53:33,910 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:53:33,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:53:33,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:53:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:53:33,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:53:33,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194425705] [2025-04-14 00:53:33,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194425705] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:53:33,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318261666] [2025-04-14 00:53:33,996 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:53:33,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:53:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:53:33,998 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:53:34,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-04-14 00:53:34,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:53:34,046 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:53:34,046 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:53:34,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:53:34,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:53:34,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:53:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:53:34,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:53:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:53:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318261666] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:53:34,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:53:34,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2025-04-14 00:53:34,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303802369] [2025-04-14 00:53:34,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:53:34,180 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:53:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:53:34,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:53:34,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:53:34,181 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:53:34,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2314 transitions, 71277 flow. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2025-04-14 00:53:34,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:53:34,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:53:34,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:53:47,122 INFO L116 PetriNetUnfolderBase]: 16279/23938 cut-off events. [2025-04-14 00:53:47,122 INFO L117 PetriNetUnfolderBase]: For 1140815/1140815 co-relation queries the response was YES. [2025-04-14 00:53:47,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295314 conditions, 23938 events. 16279/23938 cut-off events. For 1140815/1140815 co-relation queries the response was YES. Maximal size of possible extension queue 1659. Compared 158823 event pairs, 1371 based on Foata normal form. 40/23975 useless extension candidates. Maximal degree in co-relation 294794. Up to 9160 conditions per place. [2025-04-14 00:53:47,720 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1451 selfloop transitions, 2069 changer transitions 1/3521 dead transitions. [2025-04-14 00:53:47,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 3521 transitions, 107741 flow [2025-04-14 00:53:47,720 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-14 00:53:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-04-14 00:53:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 262 transitions. [2025-04-14 00:53:47,721 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4746376811594203 [2025-04-14 00:53:47,721 INFO L175 Difference]: Start difference. First operand has 560 places, 2314 transitions, 71277 flow. Second operand 23 states and 262 transitions. [2025-04-14 00:53:47,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 3521 transitions, 107741 flow [2025-04-14 00:54:02,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 3521 transitions, 107407 flow, removed 129 selfloop flow, removed 7 redundant places. [2025-04-14 00:54:02,897 INFO L231 Difference]: Finished difference. Result has 592 places, 3087 transitions, 100403 flow [2025-04-14 00:54:02,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=70733, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1436, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=100403, PETRI_PLACES=592, PETRI_TRANSITIONS=3087} [2025-04-14 00:54:02,899 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 565 predicate places. [2025-04-14 00:54:02,900 INFO L485 AbstractCegarLoop]: Abstraction has has 592 places, 3087 transitions, 100403 flow [2025-04-14 00:54:02,900 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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) [2025-04-14 00:54:02,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:54:02,900 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:54:02,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-04-14 00:54:03,100 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-04-14 00:54:03,100 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:54:03,101 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:54:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2099188289, now seen corresponding path program 21 times [2025-04-14 00:54:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:54:03,101 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712861513] [2025-04-14 00:54:03,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:54:03,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:54:03,104 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:54:03,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:54:03,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:54:03,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:54:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:54:03,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:54:03,171 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712861513] [2025-04-14 00:54:03,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712861513] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:54:03,171 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327116421] [2025-04-14 00:54:03,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:54:03,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:54:03,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:54:03,174 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:54:03,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-04-14 00:54:03,200 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:54:03,215 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:54:03,215 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:54:03,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:54:03,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:54:03,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:54:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:54:03,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:54:03,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327116421] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:54:03,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:54:03,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2025-04-14 00:54:03,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950549454] [2025-04-14 00:54:03,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:54:03,267 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:54:03,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:54:03,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:54:03,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-04-14 00:54:03,267 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:54:03,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 3087 transitions, 100403 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:54:03,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:54:03,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:54:03,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:54:20,896 INFO L116 PetriNetUnfolderBase]: 16276/24053 cut-off events. [2025-04-14 00:54:20,896 INFO L117 PetriNetUnfolderBase]: For 1360999/1360999 co-relation queries the response was YES. [2025-04-14 00:54:21,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320039 conditions, 24053 events. 16276/24053 cut-off events. For 1360999/1360999 co-relation queries the response was YES. Maximal size of possible extension queue 1684. Compared 161419 event pairs, 3429 based on Foata normal form. 51/24101 useless extension candidates. Maximal degree in co-relation 319486. Up to 21552 conditions per place. [2025-04-14 00:54:21,463 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 2582 selfloop transitions, 548 changer transitions 9/3139 dead transitions. [2025-04-14 00:54:21,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 3139 transitions, 107571 flow [2025-04-14 00:54:21,464 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:54:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:54:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2025-04-14 00:54:21,464 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2025-04-14 00:54:21,464 INFO L175 Difference]: Start difference. First operand has 592 places, 3087 transitions, 100403 flow. Second operand 7 states and 81 transitions. [2025-04-14 00:54:21,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 3139 transitions, 107571 flow [2025-04-14 00:54:42,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 3139 transitions, 105535 flow, removed 811 selfloop flow, removed 2 redundant places. [2025-04-14 00:54:42,880 INFO L231 Difference]: Finished difference. Result has 598 places, 3080 transitions, 99352 flow [2025-04-14 00:54:42,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=98343, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=99352, PETRI_PLACES=598, PETRI_TRANSITIONS=3080} [2025-04-14 00:54:42,883 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 571 predicate places. [2025-04-14 00:54:42,883 INFO L485 AbstractCegarLoop]: Abstraction has has 598 places, 3080 transitions, 99352 flow [2025-04-14 00:54:42,883 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:54:42,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:54:42,883 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:54:42,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2025-04-14 00:54:43,083 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-04-14 00:54:43,084 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:54:43,084 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:54:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1393879914, now seen corresponding path program 21 times [2025-04-14 00:54:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:54:43,084 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713683286] [2025-04-14 00:54:43,084 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:54:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:54:43,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:54:43,090 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:54:43,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:54:43,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:54:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:54:43,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:54:43,156 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713683286] [2025-04-14 00:54:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713683286] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:54:43,157 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953219629] [2025-04-14 00:54:43,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:54:43,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:54:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:54:43,159 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:54:43,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-04-14 00:54:43,184 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:54:43,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:54:43,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 00:54:43,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:54:43,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:54:43,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:54:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:54:43,219 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 00:54:43,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953219629] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:54:43,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 00:54:43,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-04-14 00:54:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083295477] [2025-04-14 00:54:43,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:54:43,219 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 00:54:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:54:43,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 00:54:43,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-04-14 00:54:43,220 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:54:43,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 3080 transitions, 99352 flow. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:54:43,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:54:43,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:54:43,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:54:59,526 INFO L116 PetriNetUnfolderBase]: 16256/24004 cut-off events. [2025-04-14 00:54:59,526 INFO L117 PetriNetUnfolderBase]: For 1313541/1313541 co-relation queries the response was YES. [2025-04-14 00:55:00,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313744 conditions, 24004 events. 16256/24004 cut-off events. For 1313541/1313541 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 160716 event pairs, 3608 based on Foata normal form. 2/24003 useless extension candidates. Maximal degree in co-relation 313195. Up to 22362 conditions per place. [2025-04-14 00:55:00,147 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 2659 selfloop transitions, 449 changer transitions 2/3110 dead transitions. [2025-04-14 00:55:00,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 3110 transitions, 106052 flow [2025-04-14 00:55:00,148 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:55:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:55:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2025-04-14 00:55:00,148 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2025-04-14 00:55:00,148 INFO L175 Difference]: Start difference. First operand has 598 places, 3080 transitions, 99352 flow. Second operand 7 states and 75 transitions. [2025-04-14 00:55:00,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 3110 transitions, 106052 flow [2025-04-14 00:55:18,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 3110 transitions, 105046 flow, removed 27 selfloop flow, removed 4 redundant places. [2025-04-14 00:55:18,481 INFO L231 Difference]: Finished difference. Result has 601 places, 3081 transitions, 99286 flow [2025-04-14 00:55:18,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=98348, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3080, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=99286, PETRI_PLACES=601, PETRI_TRANSITIONS=3081} [2025-04-14 00:55:18,484 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 574 predicate places. [2025-04-14 00:55:18,484 INFO L485 AbstractCegarLoop]: Abstraction has has 601 places, 3081 transitions, 99286 flow [2025-04-14 00:55:18,484 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2025-04-14 00:55:18,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:55:18,484 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:55:18,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2025-04-14 00:55:18,685 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:55:18,685 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:55:18,686 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:55:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1900606037, now seen corresponding path program 22 times [2025-04-14 00:55:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:55:18,686 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820222746] [2025-04-14 00:55:18,686 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:55:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:55:18,688 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:55:18,691 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:55:18,691 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:55:18,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:18,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:55:18,743 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820222746] [2025-04-14 00:55:18,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820222746] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:55:18,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426602034] [2025-04-14 00:55:18,744 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:55:18,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:55:18,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:55:18,745 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:55:18,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-04-14 00:55:18,771 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:55:18,782 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:55:18,783 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:55:18,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:18,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:55:18,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:55:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:18,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:55:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426602034] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:55:18,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:55:18,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-04-14 00:55:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962431441] [2025-04-14 00:55:18,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:55:18,967 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-14 00:55:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:55:18,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-14 00:55:18,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2025-04-14 00:55:18,967 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:55:18,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 3081 transitions, 99286 flow. Second operand has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 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) [2025-04-14 00:55:18,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:55:18,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:55:18,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:55:34,327 INFO L116 PetriNetUnfolderBase]: 16205/23900 cut-off events. [2025-04-14 00:55:34,327 INFO L117 PetriNetUnfolderBase]: For 1301103/1301103 co-relation queries the response was YES. [2025-04-14 00:55:34,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312229 conditions, 23900 events. 16205/23900 cut-off events. For 1301103/1301103 co-relation queries the response was YES. Maximal size of possible extension queue 1668. Compared 159552 event pairs, 2823 based on Foata normal form. 41/23938 useless extension candidates. Maximal degree in co-relation 311673. Up to 13891 conditions per place. [2025-04-14 00:55:34,891 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1857 selfloop transitions, 1271 changer transitions 0/3128 dead transitions. [2025-04-14 00:55:34,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 3128 transitions, 106183 flow [2025-04-14 00:55:34,892 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 00:55:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 00:55:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2025-04-14 00:55:34,892 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-04-14 00:55:34,892 INFO L175 Difference]: Start difference. First operand has 601 places, 3081 transitions, 99286 flow. Second operand 9 states and 108 transitions. [2025-04-14 00:55:34,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 3128 transitions, 106183 flow [2025-04-14 00:55:53,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 3128 transitions, 105808 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-04-14 00:55:53,222 INFO L231 Difference]: Finished difference. Result has 608 places, 3080 transitions, 101507 flow [2025-04-14 00:55:53,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=98823, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1807, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=101507, PETRI_PLACES=608, PETRI_TRANSITIONS=3080} [2025-04-14 00:55:53,224 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 581 predicate places. [2025-04-14 00:55:53,224 INFO L485 AbstractCegarLoop]: Abstraction has has 608 places, 3080 transitions, 101507 flow [2025-04-14 00:55:53,225 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 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) [2025-04-14 00:55:53,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:55:53,225 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:55:53,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2025-04-14 00:55:53,425 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-04-14 00:55:53,425 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:55:53,426 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:55:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1996470054, now seen corresponding path program 22 times [2025-04-14 00:55:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:55:53,426 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067054593] [2025-04-14 00:55:53,426 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:55:53,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:55:53,429 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:55:53,431 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:55:53,431 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:55:53,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:53,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:55:53,502 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067054593] [2025-04-14 00:55:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067054593] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:55:53,502 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112670188] [2025-04-14 00:55:53,502 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:55:53,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:55:53,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:55:53,504 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:55:53,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-04-14 00:55:53,528 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:55:53,542 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:55:53,542 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:55:53,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:55:53,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 00:55:53,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:55:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:53,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:55:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:55:53,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112670188] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:55:53,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:55:53,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-14 00:55:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685656635] [2025-04-14 00:55:53,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:55:53,694 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 00:55:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:55:53,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 00:55:53,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-04-14 00:55:53,694 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:55:53,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 3080 transitions, 101507 flow. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2025-04-14 00:55:53,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:55:53,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:55:53,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:09,118 INFO L116 PetriNetUnfolderBase]: 16201/23926 cut-off events. [2025-04-14 00:56:09,118 INFO L117 PetriNetUnfolderBase]: For 1371595/1371595 co-relation queries the response was YES. [2025-04-14 00:56:09,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316347 conditions, 23926 events. 16201/23926 cut-off events. For 1371595/1371595 co-relation queries the response was YES. Maximal size of possible extension queue 1672. Compared 160201 event pairs, 2365 based on Foata normal form. 45/23968 useless extension candidates. Maximal degree in co-relation 315786. Up to 16981 conditions per place. [2025-04-14 00:56:09,847 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1812 selfloop transitions, 1631 changer transitions 0/3443 dead transitions. [2025-04-14 00:56:09,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 3443 transitions, 115705 flow [2025-04-14 00:56:09,848 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-14 00:56:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-04-14 00:56:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 228 transitions. [2025-04-14 00:56:09,849 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2025-04-14 00:56:09,849 INFO L175 Difference]: Start difference. First operand has 608 places, 3080 transitions, 101507 flow. Second operand 21 states and 228 transitions. [2025-04-14 00:56:09,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 3443 transitions, 115705 flow [2025-04-14 00:56:27,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 3443 transitions, 113974 flow, removed 26 selfloop flow, removed 5 redundant places. [2025-04-14 00:56:28,050 INFO L231 Difference]: Finished difference. Result has 638 places, 3149 transitions, 105872 flow [2025-04-14 00:56:28,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=99778, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3080, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1568, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=105872, PETRI_PLACES=638, PETRI_TRANSITIONS=3149} [2025-04-14 00:56:28,052 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 611 predicate places. [2025-04-14 00:56:28,053 INFO L485 AbstractCegarLoop]: Abstraction has has 638 places, 3149 transitions, 105872 flow [2025-04-14 00:56:28,053 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 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) [2025-04-14 00:56:28,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:28,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:56:28,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-04-14 00:56:28,253 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-04-14 00:56:28,253 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:56:28,254 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash 810669725, now seen corresponding path program 23 times [2025-04-14 00:56:28,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:28,254 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103841787] [2025-04-14 00:56:28,254 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:56:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:28,257 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:56:28,260 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:56:28,260 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:56:28,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:28,338 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103841787] [2025-04-14 00:56:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103841787] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:56:28,338 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75152502] [2025-04-14 00:56:28,338 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:56:28,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:56:28,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:56:28,341 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:56:28,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-04-14 00:56:28,367 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:56:28,384 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:56:28,384 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:56:28,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:28,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:56:28,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:56:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:28,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:56:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75152502] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:56:28,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:56:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-04-14 00:56:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444164269] [2025-04-14 00:56:28,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:56:28,532 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-14 00:56:28,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:28,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-14 00:56:28,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-04-14 00:56:28,533 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:56:28,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 3149 transitions, 105872 flow. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 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) [2025-04-14 00:56:28,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:28,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:56:28,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:44,783 INFO L116 PetriNetUnfolderBase]: 16372/24235 cut-off events. [2025-04-14 00:56:44,783 INFO L117 PetriNetUnfolderBase]: For 1461510/1461510 co-relation queries the response was YES. [2025-04-14 00:56:45,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325079 conditions, 24235 events. 16372/24235 cut-off events. For 1461510/1461510 co-relation queries the response was YES. Maximal size of possible extension queue 1715. Compared 163907 event pairs, 3177 based on Foata normal form. 16/24248 useless extension candidates. Maximal degree in co-relation 324500. Up to 19759 conditions per place. [2025-04-14 00:56:45,359 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 2401 selfloop transitions, 1000 changer transitions 0/3401 dead transitions. [2025-04-14 00:56:45,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 3401 transitions, 118574 flow [2025-04-14 00:56:45,359 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-14 00:56:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-14 00:56:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 214 transitions. [2025-04-14 00:56:45,360 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2025-04-14 00:56:45,360 INFO L175 Difference]: Start difference. First operand has 638 places, 3149 transitions, 105872 flow. Second operand 22 states and 214 transitions. [2025-04-14 00:56:45,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 3401 transitions, 118574 flow [2025-04-14 00:57:06,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 3401 transitions, 116482 flow, removed 430 selfloop flow, removed 3 redundant places. [2025-04-14 00:57:06,574 INFO L231 Difference]: Finished difference. Result has 667 places, 3261 transitions, 110736 flow [2025-04-14 00:57:06,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=103877, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=891, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=110736, PETRI_PLACES=667, PETRI_TRANSITIONS=3261} [2025-04-14 00:57:06,576 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 640 predicate places. [2025-04-14 00:57:06,576 INFO L485 AbstractCegarLoop]: Abstraction has has 667 places, 3261 transitions, 110736 flow [2025-04-14 00:57:06,577 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 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) [2025-04-14 00:57:06,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:57:06,577 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:57:06,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-04-14 00:57:06,777 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-04-14 00:57:06,777 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:57:06,778 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:57:06,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1335501035, now seen corresponding path program 24 times [2025-04-14 00:57:06,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:57:06,778 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970545889] [2025-04-14 00:57:06,778 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:57:06,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:57:06,781 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:57:06,784 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:57:06,784 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:57:06,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:57:06,858 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970545889] [2025-04-14 00:57:06,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970545889] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:57:06,858 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952617029] [2025-04-14 00:57:06,858 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:57:06,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:57:06,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:57:06,860 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:57:06,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-04-14 00:57:06,887 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:57:06,905 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:57:06,905 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:57:06,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:06,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:57:06,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:57:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:06,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:57:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:07,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952617029] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:57:07,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:57:07,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-04-14 00:57:07,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067809221] [2025-04-14 00:57:07,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:57:07,043 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-14 00:57:07,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:57:07,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-14 00:57:07,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-04-14 00:57:07,044 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:57:07,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 3261 transitions, 110736 flow. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 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) [2025-04-14 00:57:07,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:57:07,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:57:07,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:57:24,200 INFO L116 PetriNetUnfolderBase]: 16526/24567 cut-off events. [2025-04-14 00:57:24,201 INFO L117 PetriNetUnfolderBase]: For 1499229/1499229 co-relation queries the response was YES. [2025-04-14 00:57:24,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333853 conditions, 24567 events. 16526/24567 cut-off events. For 1499229/1499229 co-relation queries the response was YES. Maximal size of possible extension queue 1764. Compared 167663 event pairs, 3179 based on Foata normal form. 16/24580 useless extension candidates. Maximal degree in co-relation 333252. Up to 19496 conditions per place. [2025-04-14 00:57:24,720 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 2479 selfloop transitions, 1009 changer transitions 0/3488 dead transitions. [2025-04-14 00:57:24,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 3488 transitions, 122153 flow [2025-04-14 00:57:24,720 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-14 00:57:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-04-14 00:57:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 190 transitions. [2025-04-14 00:57:24,721 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2025-04-14 00:57:24,721 INFO L175 Difference]: Start difference. First operand has 667 places, 3261 transitions, 110736 flow. Second operand 20 states and 190 transitions. [2025-04-14 00:57:24,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 3488 transitions, 122153 flow [2025-04-14 00:57:47,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 3488 transitions, 121139 flow, removed 233 selfloop flow, removed 5 redundant places. [2025-04-14 00:57:47,164 INFO L231 Difference]: Finished difference. Result has 687 places, 3320 transitions, 113513 flow [2025-04-14 00:57:47,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=109541, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=945, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=113513, PETRI_PLACES=687, PETRI_TRANSITIONS=3320} [2025-04-14 00:57:47,166 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 660 predicate places. [2025-04-14 00:57:47,166 INFO L485 AbstractCegarLoop]: Abstraction has has 687 places, 3320 transitions, 113513 flow [2025-04-14 00:57:47,166 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 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) [2025-04-14 00:57:47,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:57:47,166 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:57:47,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2025-04-14 00:57:47,366 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:57:47,367 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:57:47,367 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:57:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash -642748576, now seen corresponding path program 23 times [2025-04-14 00:57:47,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:57:47,368 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398873170] [2025-04-14 00:57:47,368 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:57:47,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:57:47,370 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:57:47,373 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:57:47,373 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:57:47,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:47,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:57:47,458 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398873170] [2025-04-14 00:57:47,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398873170] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:57:47,458 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390652249] [2025-04-14 00:57:47,458 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:57:47,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:57:47,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:57:47,460 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:57:47,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-04-14 00:57:47,485 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:57:47,496 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:57:47,496 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 00:57:47,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:57:47,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:57:47,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:57:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:47,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:57:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:57:47,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390652249] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:57:47,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:57:47,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-04-14 00:57:47,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599382818] [2025-04-14 00:57:47,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:57:47,641 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-14 00:57:47,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:57:47,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-14 00:57:47,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2025-04-14 00:57:47,641 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:57:47,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 3320 transitions, 113513 flow. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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) [2025-04-14 00:57:47,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:57:47,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:57:47,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:58:05,303 INFO L116 PetriNetUnfolderBase]: 16593/24695 cut-off events. [2025-04-14 00:58:05,303 INFO L117 PetriNetUnfolderBase]: For 1520458/1520458 co-relation queries the response was YES. [2025-04-14 00:58:05,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338682 conditions, 24695 events. 16593/24695 cut-off events. For 1520458/1520458 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 168886 event pairs, 2478 based on Foata normal form. 46/24738 useless extension candidates. Maximal degree in co-relation 338074. Up to 17657 conditions per place. [2025-04-14 00:58:05,743 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 1930 selfloop transitions, 1690 changer transitions 0/3620 dead transitions. [2025-04-14 00:58:05,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 3620 transitions, 126510 flow [2025-04-14 00:58:05,744 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-14 00:58:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-04-14 00:58:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 247 transitions. [2025-04-14 00:58:05,745 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4288194444444444 [2025-04-14 00:58:05,745 INFO L175 Difference]: Start difference. First operand has 687 places, 3320 transitions, 113513 flow. Second operand 24 states and 247 transitions. [2025-04-14 00:58:05,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 3620 transitions, 126510 flow [2025-04-14 00:58:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 3620 transitions, 124763 flow, removed 234 selfloop flow, removed 7 redundant places. [2025-04-14 00:58:29,186 INFO L231 Difference]: Finished difference. Result has 707 places, 3366 transitions, 116565 flow [2025-04-14 00:58:29,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=111721, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=116565, PETRI_PLACES=707, PETRI_TRANSITIONS=3366} [2025-04-14 00:58:29,188 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 680 predicate places. [2025-04-14 00:58:29,188 INFO L485 AbstractCegarLoop]: Abstraction has has 707 places, 3366 transitions, 116565 flow [2025-04-14 00:58:29,189 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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) [2025-04-14 00:58:29,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:58:29,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:58:29,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-04-14 00:58:29,389 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:58:29,389 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:58:29,390 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:58:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1661449902, now seen corresponding path program 24 times [2025-04-14 00:58:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:58:29,390 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298650081] [2025-04-14 00:58:29,390 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:58:29,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:58:29,393 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:58:29,396 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:58:29,396 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:58:29,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:58:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:58:29,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:58:29,454 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298650081] [2025-04-14 00:58:29,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298650081] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:58:29,454 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152094290] [2025-04-14 00:58:29,454 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:58:29,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:58:29,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:58:29,456 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:58:29,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-04-14 00:58:29,482 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-04-14 00:58:29,498 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:58:29,498 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 00:58:29,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:58:29,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-14 00:58:29,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:58:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:58:29,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:58:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:58:29,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152094290] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:58:29,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:58:29,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2025-04-14 00:58:29,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176099751] [2025-04-14 00:58:29,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:58:29,668 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-14 00:58:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:58:29,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-14 00:58:29,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-04-14 00:58:29,669 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:58:29,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 3366 transitions, 116565 flow. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 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) [2025-04-14 00:58:29,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:58:29,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:58:29,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:58:48,038 INFO L116 PetriNetUnfolderBase]: 16851/25132 cut-off events. [2025-04-14 00:58:48,038 INFO L117 PetriNetUnfolderBase]: For 1546824/1546824 co-relation queries the response was YES. [2025-04-14 00:58:48,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347811 conditions, 25132 events. 16851/25132 cut-off events. For 1546824/1546824 co-relation queries the response was YES. Maximal size of possible extension queue 1802. Compared 172395 event pairs, 1008 based on Foata normal form. 61/25190 useless extension candidates. Maximal degree in co-relation 347227. Up to 9420 conditions per place. [2025-04-14 00:58:48,962 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 1558 selfloop transitions, 2222 changer transitions 0/3780 dead transitions. [2025-04-14 00:58:48,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 3780 transitions, 132386 flow [2025-04-14 00:58:48,962 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-14 00:58:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-04-14 00:58:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 372 transitions. [2025-04-14 00:58:48,963 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2025-04-14 00:58:48,963 INFO L175 Difference]: Start difference. First operand has 707 places, 3366 transitions, 116565 flow. Second operand 33 states and 372 transitions. [2025-04-14 00:58:48,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 3780 transitions, 132386 flow [2025-04-14 00:59:14,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 3780 transitions, 131919 flow, removed 149 selfloop flow, removed 2 redundant places. [2025-04-14 00:59:14,235 INFO L231 Difference]: Finished difference. Result has 744 places, 3419 transitions, 124502 flow [2025-04-14 00:59:14,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=115735, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=124502, PETRI_PLACES=744, PETRI_TRANSITIONS=3419} [2025-04-14 00:59:14,237 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 717 predicate places. [2025-04-14 00:59:14,237 INFO L485 AbstractCegarLoop]: Abstraction has has 744 places, 3419 transitions, 124502 flow [2025-04-14 00:59:14,237 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 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) [2025-04-14 00:59:14,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:59:14,237 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:59:14,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-04-14 00:59:14,438 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:59:14,438 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:59:14,439 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:59:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1761754034, now seen corresponding path program 25 times [2025-04-14 00:59:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:59:14,439 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166565185] [2025-04-14 00:59:14,439 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:59:14,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:59:14,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:59:14,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:59:14,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:59:14,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:59:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:59:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:59:14,500 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166565185] [2025-04-14 00:59:14,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166565185] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 00:59:14,501 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386035075] [2025-04-14 00:59:14,501 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 00:59:14,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 00:59:14,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:59:14,502 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 00:59:14,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-04-14 00:59:14,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 00:59:14,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 00:59:14,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:59:14,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:59:14,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 00:59:14,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 00:59:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:59:14,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 00:59:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:59:14,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386035075] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 00:59:14,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 00:59:14,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2025-04-14 00:59:14,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791656278] [2025-04-14 00:59:14,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 00:59:14,683 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-14 00:59:14,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:59:14,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-14 00:59:14,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2025-04-14 00:59:14,684 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 00:59:14,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 3419 transitions, 124502 flow. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 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) [2025-04-14 00:59:14,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:59:14,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 00:59:14,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:59:35,386 INFO L116 PetriNetUnfolderBase]: 18122/27068 cut-off events. [2025-04-14 00:59:35,386 INFO L117 PetriNetUnfolderBase]: For 1927319/1927319 co-relation queries the response was YES. [2025-04-14 00:59:36,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384163 conditions, 27068 events. 18122/27068 cut-off events. For 1927319/1927319 co-relation queries the response was YES. Maximal size of possible extension queue 1935. Compared 188754 event pairs, 2055 based on Foata normal form. 29/27094 useless extension candidates. Maximal degree in co-relation 383614. Up to 12076 conditions per place. [2025-04-14 00:59:36,698 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 1715 selfloop transitions, 2087 changer transitions 0/3802 dead transitions. [2025-04-14 00:59:36,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 3802 transitions, 141156 flow [2025-04-14 00:59:36,698 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-14 00:59:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-14 00:59:36,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 241 transitions. [2025-04-14 00:59:36,699 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4564393939393939 [2025-04-14 00:59:36,699 INFO L175 Difference]: Start difference. First operand has 744 places, 3419 transitions, 124502 flow. Second operand 22 states and 241 transitions. [2025-04-14 00:59:36,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 3802 transitions, 141156 flow [2025-04-14 01:00:12,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 3802 transitions, 138215 flow, removed 347 selfloop flow, removed 6 redundant places. [2025-04-14 01:00:12,869 INFO L231 Difference]: Finished difference. Result has 766 places, 3498 transitions, 131165 flow [2025-04-14 01:00:12,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=121539, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2007, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=131165, PETRI_PLACES=766, PETRI_TRANSITIONS=3498} [2025-04-14 01:00:12,871 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 739 predicate places. [2025-04-14 01:00:12,871 INFO L485 AbstractCegarLoop]: Abstraction has has 766 places, 3498 transitions, 131165 flow [2025-04-14 01:00:12,872 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 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) [2025-04-14 01:00:12,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:00:12,872 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:00:12,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2025-04-14 01:00:13,073 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2025-04-14 01:00:13,074 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:00:13,074 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:00:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash -10227518, now seen corresponding path program 26 times [2025-04-14 01:00:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:00:13,074 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229992695] [2025-04-14 01:00:13,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:00:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:00:13,077 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 01:00:13,080 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 01:00:13,080 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:00:13,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:00:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:00:13,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:00:13,145 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229992695] [2025-04-14 01:00:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229992695] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:00:13,145 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568363410] [2025-04-14 01:00:13,145 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:00:13,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:00:13,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:00:13,147 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:00:13,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-04-14 01:00:13,172 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 01:00:13,189 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 01:00:13,189 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:00:13,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:00:13,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-14 01:00:13,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:00:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:00:13,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:00:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:00:13,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568363410] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:00:13,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:00:13,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 15 [2025-04-14 01:00:13,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113927996] [2025-04-14 01:00:13,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:00:13,287 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-14 01:00:13,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:00:13,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-14 01:00:13,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-04-14 01:00:13,287 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2025-04-14 01:00:13,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 3498 transitions, 131165 flow. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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) [2025-04-14 01:00:13,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:00:13,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2025-04-14 01:00:13,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:00:34,424 INFO L116 PetriNetUnfolderBase]: 18184/27072 cut-off events. [2025-04-14 01:00:34,425 INFO L117 PetriNetUnfolderBase]: For 1975880/1975880 co-relation queries the response was YES. [2025-04-14 01:00:34,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397473 conditions, 27072 events. 18184/27072 cut-off events. For 1975880/1975880 co-relation queries the response was YES. Maximal size of possible extension queue 1941. Compared 187405 event pairs, 2862 based on Foata normal form. 62/27131 useless extension candidates. Maximal degree in co-relation 396912. Up to 19776 conditions per place. [2025-04-14 01:00:35,090 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 2109 selfloop transitions, 1720 changer transitions 0/3829 dead transitions. [2025-04-14 01:00:35,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 3829 transitions, 146023 flow [2025-04-14 01:00:35,091 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-14 01:00:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-14 01:00:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 231 transitions. [2025-04-14 01:00:35,092 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-04-14 01:00:35,092 INFO L175 Difference]: Start difference. First operand has 766 places, 3498 transitions, 131165 flow. Second operand 22 states and 231 transitions. [2025-04-14 01:00:35,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 787 places, 3829 transitions, 146023 flow Received shutdown request... [2025-04-14 01:00:59,436 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 01:00:59,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-04-14 01:00:59,469 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-14 01:00:59,472 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-14 01:00:59,637 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2025-04-14 01:00:59,637 WARN L610 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2025-04-14 01:00:59,639 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 01:00:59,639 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 01:00:59,639 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 01:00:59,639 INFO L422 BasicCegarLoop]: Path program histogram: [26, 24, 4, 1] [2025-04-14 01:00:59,642 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 01:00:59,642 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 01:00:59,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 01:00:59 BasicIcfg [2025-04-14 01:00:59,645 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 01:00:59,646 INFO L158 Benchmark]: Toolchain (without parser) took 790200.22ms. Allocated memory was 155.2MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 111.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2025-04-14 01:00:59,647 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:00:59,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.07ms. Allocated memory is still 155.2MB. Free memory was 111.3MB in the beginning and 97.1MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-14 01:00:59,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.45ms. Allocated memory is still 155.2MB. Free memory was 97.1MB in the beginning and 95.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:00:59,648 INFO L158 Benchmark]: Boogie Preprocessor took 34.34ms. Allocated memory is still 155.2MB. Free memory was 95.4MB in the beginning and 94.0MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 01:00:59,648 INFO L158 Benchmark]: IcfgBuilder took 352.03ms. Allocated memory is still 155.2MB. Free memory was 94.0MB in the beginning and 66.0MB in the end (delta: 27.9MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 01:00:59,648 INFO L158 Benchmark]: TraceAbstraction took 789556.06ms. Allocated memory was 155.2MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 65.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2025-04-14 01:00:59,649 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.07ms. Allocated memory is still 155.2MB. Free memory was 111.3MB in the beginning and 97.1MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.45ms. Allocated memory is still 155.2MB. Free memory was 97.1MB in the beginning and 95.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 34.34ms. Allocated memory is still 155.2MB. Free memory was 95.4MB in the beginning and 94.0MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 352.03ms. Allocated memory is still 155.2MB. Free memory was 94.0MB in the beginning and 66.0MB in the end (delta: 27.9MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 789556.06ms. Allocated memory was 155.2MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 65.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 34 locations, 39 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 789.5s, OverallIterations: 55, TraceHistogramMax: 1, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 763.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3122 SdHoareTripleChecker+Valid, 12.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3122 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 10.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 334 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23865 IncrementalHoareTripleChecker+Invalid, 24199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 334 mSolverCounterUnsat, 0 mSDtfsCounter, 23865 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2226 GetRequests, 1305 SyntacticMatches, 67 SemanticMatches, 854 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4029 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131165occurred in iteration=54, InterpolantAutomatonStates: 714, 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: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 13.3s InterpolantComputationTime, 1889 NumberOfCodeBlocks, 1889 NumberOfCodeBlocksAsserted, 191 NumberOfCheckSat, 2464 ConstructedInterpolants, 0 QuantifiedInterpolants, 14365 SizeOfPredicates, 208 NumberOfNonLiveVariables, 6450 ConjunctsInSsa, 644 ConjunctsInUnsatCore, 145 InterpolantComputations, 26 PerfectInterpolantSequences, 25/144 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown