/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/chl-collitem-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:33:25,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:33:25,594 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 00:33:25,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:33:25,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:33:25,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:33:25,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:33:25,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:33:25,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:33:25,613 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:33:25,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:33:25,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:33:25,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:33:25,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:33:25,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:33:25,615 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:33:25,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:33:25,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:33:25,615 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:33:25,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:33:25,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:33:25,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:33:25,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:33:25,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:33:25,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:33:25,616 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 00:33:25,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:33:25,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:33:25,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:33:25,867 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:33:25,869 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:33:25,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2025-04-14 00:33:27,219 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe3f2815/914b62a5b36e4f858f71d4a925002357/FLAG537f74077 [2025-04-14 00:33:27,455 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:33:27,456 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2025-04-14 00:33:27,470 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe3f2815/914b62a5b36e4f858f71d4a925002357/FLAG537f74077 [2025-04-14 00:33:28,270 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe3f2815/914b62a5b36e4f858f71d4a925002357 [2025-04-14 00:33:28,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:33:28,274 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:33:28,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:33:28,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:33:28,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:33:28,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341a4de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28, skipping insertion in model container [2025-04-14 00:33:28,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,299 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:33:28,490 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/chl-collitem-trans.wvr.c[3520,3533] [2025-04-14 00:33:28,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:33:28,511 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:33:28,534 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/chl-collitem-trans.wvr.c[3520,3533] [2025-04-14 00:33:28,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:33:28,546 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:33:28,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28 WrapperNode [2025-04-14 00:33:28,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:33:28,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:33:28,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:33:28,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:33:28,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,606 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 345 [2025-04-14 00:33:28,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:33:28,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:33:28,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:33:28,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:33:28,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,622 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,637 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 00:33:28,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,644 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:33:28,652 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:33:28,652 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:33:28,652 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:33:28,653 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (1/1) ... [2025-04-14 00:33:28,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:33:28,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:33:28,684 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 00:33:28,691 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 00:33:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:33:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:33:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:33:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:33:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:33:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 00:33:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 00:33:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:33:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:33:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:33:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:33:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:33:28,711 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 00:33:28,804 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:33:28,805 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:33:29,208 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:33:29,208 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:33:29,208 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:33:29,689 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:33:29,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:33:29 BoogieIcfgContainer [2025-04-14 00:33:29,689 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:33:29,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:33:29,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:33:29,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:33:29,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:33:28" (1/3) ... [2025-04-14 00:33:29,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a456060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:33:29, skipping insertion in model container [2025-04-14 00:33:29,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:28" (2/3) ... [2025-04-14 00:33:29,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a456060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:33:29, skipping insertion in model container [2025-04-14 00:33:29,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:33:29" (3/3) ... [2025-04-14 00:33:29,695 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2025-04-14 00:33:29,704 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:33:29,705 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-collitem-trans.wvr.c that has 4 procedures, 25 locations, 21 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 00:33:29,706 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:33:29,765 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-14 00:33:29,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 69 flow [2025-04-14 00:33:29,815 INFO L116 PetriNetUnfolderBase]: 0/21 cut-off events. [2025-04-14 00:33:29,817 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:33:29,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 0/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-14 00:33:29,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 24 transitions, 69 flow [2025-04-14 00:33:29,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 20 transitions, 58 flow [2025-04-14 00:33:29,828 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:33:29,840 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;@19c31655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:33:29,840 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 00:33:29,856 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:33:29,857 INFO L116 PetriNetUnfolderBase]: 0/19 cut-off events. [2025-04-14 00:33:29,857 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:33:29,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:33:29,857 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:33:29,857 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 00:33:29,861 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:33:29,862 INFO L85 PathProgramCache]: Analyzing trace with hash -365844161, now seen corresponding path program 1 times [2025-04-14 00:33:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:33:29,868 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418819676] [2025-04-14 00:33:29,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:33:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:33:29,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:33:30,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:33:30,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:33:30,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:33:32,311 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 00:33:32,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:33:32,311 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418819676] [2025-04-14 00:33:32,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418819676] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:33:32,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:33:32,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:33:32,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212748609] [2025-04-14 00:33:32,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:33:32,321 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:33:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:33:32,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:33:32,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:33:32,343 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-14 00:33:32,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:32,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:33:32,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-14 00:33:32,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:33:32,760 INFO L116 PetriNetUnfolderBase]: 178/329 cut-off events. [2025-04-14 00:33:32,760 INFO L117 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-04-14 00:33:32,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 329 events. 178/329 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1243 event pairs, 10 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 634. Up to 110 conditions per place. [2025-04-14 00:33:32,763 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 34 selfloop transitions, 6 changer transitions 8/51 dead transitions. [2025-04-14 00:33:32,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 246 flow [2025-04-14 00:33:32,764 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:33:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:33:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2025-04-14 00:33:32,776 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2025-04-14 00:33:32,777 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 58 flow. Second operand 6 states and 85 transitions. [2025-04-14 00:33:32,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 246 flow [2025-04-14 00:33:32,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-14 00:33:32,785 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 79 flow [2025-04-14 00:33:32,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-04-14 00:33:32,789 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2025-04-14 00:33:32,789 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 79 flow [2025-04-14 00:33:32,790 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:32,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:33:32,790 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:33:32,790 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:33:32,790 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 00:33:32,791 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:33:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -744062975, now seen corresponding path program 2 times [2025-04-14 00:33:32,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:33:32,791 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011116534] [2025-04-14 00:33:32,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:33:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:33:32,806 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:33:32,843 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:33:32,844 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:33:32,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:33:34,004 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 00:33:34,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:33:34,004 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011116534] [2025-04-14 00:33:34,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011116534] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:33:34,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:33:34,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:33:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394824622] [2025-04-14 00:33:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:33:34,005 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:33:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:33:34,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:33:34,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:33:34,006 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-14 00:33:34,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:34,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:33:34,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-14 00:33:34,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:33:34,351 INFO L116 PetriNetUnfolderBase]: 194/364 cut-off events. [2025-04-14 00:33:34,351 INFO L117 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-04-14 00:33:34,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 364 events. 194/364 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1491 event pairs, 28 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 857. Up to 151 conditions per place. [2025-04-14 00:33:34,356 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 33 selfloop transitions, 6 changer transitions 12/54 dead transitions. [2025-04-14 00:33:34,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 260 flow [2025-04-14 00:33:34,357 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:33:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:33:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-04-14 00:33:34,358 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-04-14 00:33:34,358 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 79 flow. Second operand 6 states and 87 transitions. [2025-04-14 00:33:34,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 260 flow [2025-04-14 00:33:34,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 256 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-14 00:33:34,359 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 90 flow [2025-04-14 00:33:34,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2025-04-14 00:33:34,360 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2025-04-14 00:33:34,360 INFO L485 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 90 flow [2025-04-14 00:33:34,360 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:34,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:33:34,360 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:33:34,360 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:33:34,360 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 00:33:34,362 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:33:34,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1097362233, now seen corresponding path program 3 times [2025-04-14 00:33:34,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:33:34,363 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428298264] [2025-04-14 00:33:34,364 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:33:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:33:34,377 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:33:34,396 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:33:34,396 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 00:33:34,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:33:35,358 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 00:33:35,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:33:35,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428298264] [2025-04-14 00:33:35,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428298264] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:33:35,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:33:35,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:33:35,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214258299] [2025-04-14 00:33:35,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:33:35,359 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:33:35,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:33:35,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:33:35,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:33:35,359 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-14 00:33:35,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:35,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:33:35,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-14 00:33:35,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:33:35,620 INFO L116 PetriNetUnfolderBase]: 189/366 cut-off events. [2025-04-14 00:33:35,620 INFO L117 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2025-04-14 00:33:35,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 366 events. 189/366 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1528 event pairs, 16 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 914. Up to 190 conditions per place. [2025-04-14 00:33:35,622 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 31 selfloop transitions, 5 changer transitions 11/50 dead transitions. [2025-04-14 00:33:35,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 259 flow [2025-04-14 00:33:35,633 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:33:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:33:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2025-04-14 00:33:35,635 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-04-14 00:33:35,635 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 90 flow. Second operand 6 states and 84 transitions. [2025-04-14 00:33:35,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 259 flow [2025-04-14 00:33:35,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 235 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-04-14 00:33:35,640 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 90 flow [2025-04-14 00:33:35,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2025-04-14 00:33:35,641 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-04-14 00:33:35,641 INFO L485 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 90 flow [2025-04-14 00:33:35,641 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:35,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:33:35,641 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:33:35,641 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:33:35,641 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 00:33:35,642 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:33:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1712498661, now seen corresponding path program 4 times [2025-04-14 00:33:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:33:35,642 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445258599] [2025-04-14 00:33:35,642 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 00:33:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:33:35,661 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-14 00:33:35,703 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:33:35,703 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 00:33:35,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:33:36,779 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 00:33:36,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:33:36,779 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445258599] [2025-04-14 00:33:36,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445258599] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:33:36,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:33:36,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:33:36,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069099774] [2025-04-14 00:33:36,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:33:36,779 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:33:36,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:33:36,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:33:36,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:33:36,780 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-14 00:33:36,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:36,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:33:36,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-14 00:33:36,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:33:37,004 INFO L116 PetriNetUnfolderBase]: 138/268 cut-off events. [2025-04-14 00:33:37,004 INFO L117 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2025-04-14 00:33:37,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 268 events. 138/268 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1002 event pairs, 9 based on Foata normal form. 1/268 useless extension candidates. Maximal degree in co-relation 669. Up to 93 conditions per place. [2025-04-14 00:33:37,007 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 30 selfloop transitions, 5 changer transitions 10/48 dead transitions. [2025-04-14 00:33:37,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 246 flow [2025-04-14 00:33:37,007 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:33:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:33:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2025-04-14 00:33:37,009 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2025-04-14 00:33:37,009 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 90 flow. Second operand 6 states and 82 transitions. [2025-04-14 00:33:37,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 246 flow [2025-04-14 00:33:37,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 231 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-04-14 00:33:37,011 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 94 flow [2025-04-14 00:33:37,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2025-04-14 00:33:37,011 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2025-04-14 00:33:37,011 INFO L485 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 94 flow [2025-04-14 00:33:37,013 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:37,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:33:37,013 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:33:37,013 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:33:37,013 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 00:33:37,014 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:33:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1487707261, now seen corresponding path program 5 times [2025-04-14 00:33:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:33:37,014 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683923341] [2025-04-14 00:33:37,014 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 00:33:37,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:33:37,026 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:33:37,087 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:33:37,087 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:33:37,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:33:38,112 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 00:33:38,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:33:38,113 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683923341] [2025-04-14 00:33:38,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683923341] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:33:38,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:33:38,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:33:38,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942073098] [2025-04-14 00:33:38,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:33:38,113 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:33:38,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:33:38,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:33:38,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:33:38,114 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-14 00:33:38,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:38,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:33:38,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-14 00:33:38,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:33:38,309 INFO L116 PetriNetUnfolderBase]: 106/212 cut-off events. [2025-04-14 00:33:38,310 INFO L117 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2025-04-14 00:33:38,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 212 events. 106/212 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 730 event pairs, 20 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 562. Up to 109 conditions per place. [2025-04-14 00:33:38,311 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 19 selfloop transitions, 3 changer transitions 16/41 dead transitions. [2025-04-14 00:33:38,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 218 flow [2025-04-14 00:33:38,311 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:33:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:33:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2025-04-14 00:33:38,314 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-04-14 00:33:38,314 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 94 flow. Second operand 6 states and 75 transitions. [2025-04-14 00:33:38,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 218 flow [2025-04-14 00:33:38,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 213 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-14 00:33:38,315 INFO L231 Difference]: Finished difference. Result has 43 places, 20 transitions, 75 flow [2025-04-14 00:33:38,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=75, PETRI_PLACES=43, PETRI_TRANSITIONS=20} [2025-04-14 00:33:38,316 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2025-04-14 00:33:38,316 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 20 transitions, 75 flow [2025-04-14 00:33:38,316 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:38,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:33:38,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:33:38,316 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 00:33:38,316 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 00:33:38,319 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:33:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1528081717, now seen corresponding path program 6 times [2025-04-14 00:33:38,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:33:38,319 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872118935] [2025-04-14 00:33:38,319 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 00:33:38,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:33:38,331 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:33:38,356 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:33:38,357 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 00:33:38,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:33:39,360 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 00:33:39,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:33:39,361 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872118935] [2025-04-14 00:33:39,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872118935] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:33:39,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:33:39,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:33:39,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434382171] [2025-04-14 00:33:39,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:33:39,362 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:33:39,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:33:39,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:33:39,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:33:39,363 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-14 00:33:39,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 20 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:39,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:33:39,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-14 00:33:39,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:33:39,545 INFO L116 PetriNetUnfolderBase]: 42/89 cut-off events. [2025-04-14 00:33:39,546 INFO L117 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-04-14 00:33:39,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 89 events. 42/89 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 0 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 240. Up to 54 conditions per place. [2025-04-14 00:33:39,546 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2025-04-14 00:33:39,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 132 flow [2025-04-14 00:33:39,546 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:33:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:33:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2025-04-14 00:33:39,547 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-04-14 00:33:39,547 INFO L175 Difference]: Start difference. First operand has 43 places, 20 transitions, 75 flow. Second operand 6 states and 60 transitions. [2025-04-14 00:33:39,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 132 flow [2025-04-14 00:33:39,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 115 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-04-14 00:33:39,547 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2025-04-14 00:33:39,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2025-04-14 00:33:39,548 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2025-04-14 00:33:39,548 INFO L485 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2025-04-14 00:33:39,548 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 00:33:39,550 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 00:33:39,550 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 00:33:39,550 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 00:33:39,550 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 00:33:39,550 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 00:33:39,550 INFO L422 BasicCegarLoop]: Path program histogram: [6] [2025-04-14 00:33:39,554 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:33:39,554 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:33:39,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:33:39 BasicIcfg [2025-04-14 00:33:39,559 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:33:39,560 INFO L158 Benchmark]: Toolchain (without parser) took 11286.53ms. Allocated memory was 155.2MB in the beginning and 578.8MB in the end (delta: 423.6MB). Free memory was 109.7MB in the beginning and 347.8MB in the end (delta: -238.0MB). Peak memory consumption was 184.7MB. Max. memory is 8.0GB. [2025-04-14 00:33:39,560 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:33:39,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.98ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 94.2MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-14 00:33:39,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.68ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 91.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:33:39,563 INFO L158 Benchmark]: Boogie Preprocessor took 44.50ms. Allocated memory is still 155.2MB. Free memory was 91.2MB in the beginning and 88.4MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:33:39,563 INFO L158 Benchmark]: IcfgBuilder took 1037.40ms. Allocated memory is still 155.2MB. Free memory was 88.4MB in the beginning and 73.7MB in the end (delta: 14.7MB). Peak memory consumption was 74.6MB. Max. memory is 8.0GB. [2025-04-14 00:33:39,563 INFO L158 Benchmark]: TraceAbstraction took 9868.35ms. Allocated memory was 155.2MB in the beginning and 578.8MB in the end (delta: 423.6MB). Free memory was 72.7MB in the beginning and 347.8MB in the end (delta: -275.1MB). Peak memory consumption was 148.5MB. Max. memory is 8.0GB. [2025-04-14 00:33:39,564 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 269.98ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 94.2MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.68ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 91.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.50ms. Allocated memory is still 155.2MB. Free memory was 91.2MB in the beginning and 88.4MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 1037.40ms. Allocated memory is still 155.2MB. Free memory was 88.4MB in the beginning and 73.7MB in the end (delta: 14.7MB). Peak memory consumption was 74.6MB. Max. memory is 8.0GB. * TraceAbstraction took 9868.35ms. Allocated memory was 155.2MB in the beginning and 578.8MB in the end (delta: 423.6MB). Free memory was 72.7MB in the beginning and 347.8MB in the end (delta: -275.1MB). Peak memory consumption was 148.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 40 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: 9.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 520 IncrementalHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3227 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-14 00:33:39,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...