/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 20:12:47,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 20:12:47,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 20:12:47,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 20:12:47,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 20:12:47,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 20:12:47,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 20:12:47,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 20:12:47,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 20:12:47,682 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 20:12:47,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 20:12:47,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 20:12:47,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 20:12:47,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 20:12:47,684 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:12:47,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:12:47,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:12:47,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 20:12:47,685 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 20:12:47,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 20:12:47,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 20:12:47,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 20:12:47,920 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 20:12:47,920 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 20:12:47,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2025-04-13 20:12:49,213 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5187ebc8/ddddc8499d87463085dee69fe87a6e8c/FLAG6a8822ba3 [2025-04-13 20:12:49,399 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 20:12:49,399 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2025-04-13 20:12:49,406 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5187ebc8/ddddc8499d87463085dee69fe87a6e8c/FLAG6a8822ba3 [2025-04-13 20:12:50,264 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5187ebc8/ddddc8499d87463085dee69fe87a6e8c [2025-04-13 20:12:50,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 20:12:50,267 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 20:12:50,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 20:12:50,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 20:12:50,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 20:12:50,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46232696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50, skipping insertion in model container [2025-04-13 20:12:50,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 20:12:50,465 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/parallel-bakery-2.wvr.c[2556,2569] [2025-04-13 20:12:50,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:12:50,481 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 20:12:50,509 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/parallel-bakery-2.wvr.c[2556,2569] [2025-04-13 20:12:50,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:12:50,524 INFO L204 MainTranslator]: Completed translation [2025-04-13 20:12:50,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50 WrapperNode [2025-04-13 20:12:50,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 20:12:50,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 20:12:50,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 20:12:50,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 20:12:50,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,556 INFO L138 Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 139 [2025-04-13 20:12:50,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 20:12:50,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 20:12:50,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 20:12:50,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 20:12:50,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,586 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 20:12:50,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,591 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 20:12:50,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 20:12:50,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 20:12:50,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 20:12:50,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (1/1) ... [2025-04-13 20:12:50,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:12:50,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 20:12:50,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 20:12:50,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 20:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 20:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 20:12:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 20:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 20:12:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 20:12:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 20:12:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 20:12:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 20:12:50,653 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 20:12:50,721 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 20:12:50,722 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 20:12:50,904 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 20:12:50,904 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 20:12:50,904 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 20:12:51,031 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 20:12:51,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:12:51 BoogieIcfgContainer [2025-04-13 20:12:51,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 20:12:51,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 20:12:51,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 20:12:51,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 20:12:51,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 08:12:50" (1/3) ... [2025-04-13 20:12:51,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dee439b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:12:51, skipping insertion in model container [2025-04-13 20:12:51,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:12:50" (2/3) ... [2025-04-13 20:12:51,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dee439b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:12:51, skipping insertion in model container [2025-04-13 20:12:51,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:12:51" (3/3) ... [2025-04-13 20:12:51,038 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2025-04-13 20:12:51,046 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 20:12:51,048 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-bakery-2.wvr.c that has 3 procedures, 50 locations, 49 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 20:12:51,048 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 20:12:51,077 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 20:12:51,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 51 transitions, 116 flow [2025-04-13 20:12:51,123 INFO L116 PetriNetUnfolderBase]: 2/49 cut-off events. [2025-04-13 20:12:51,125 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 20:12:51,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 49 events. 2/49 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2025-04-13 20:12:51,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 51 transitions, 116 flow [2025-04-13 20:12:51,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 48 transitions, 108 flow [2025-04-13 20:12:51,133 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 20:12:51,141 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;@5275048b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 20:12:51,141 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 20:12:51,155 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 20:12:51,156 INFO L116 PetriNetUnfolderBase]: 2/47 cut-off events. [2025-04-13 20:12:51,156 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 20:12:51,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:12:51,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:12:51,157 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 20:12:51,160 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:12:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1360340630, now seen corresponding path program 1 times [2025-04-13 20:12:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:12:51,165 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295502776] [2025-04-13 20:12:51,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:12:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:12:51,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-13 20:12:51,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 20:12:51,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:12:51,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:12:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:12:51,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:12:51,574 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295502776] [2025-04-13 20:12:51,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295502776] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:12:51,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:12:51,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 20:12:51,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340380800] [2025-04-13 20:12:51,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:12:51,584 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:12:51,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:12:51,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:12:51,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:12:51,644 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2025-04-13 20:12:51,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:51,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:12:51,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2025-04-13 20:12:51,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:12:51,947 INFO L116 PetriNetUnfolderBase]: 266/618 cut-off events. [2025-04-13 20:12:51,947 INFO L117 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2025-04-13 20:12:51,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 618 events. 266/618 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2972 event pairs, 118 based on Foata normal form. 1/577 useless extension candidates. Maximal degree in co-relation 1038. Up to 208 conditions per place. [2025-04-13 20:12:51,953 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 60 selfloop transitions, 10 changer transitions 13/97 dead transitions. [2025-04-13 20:12:51,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 399 flow [2025-04-13 20:12:51,954 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:12:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:12:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2025-04-13 20:12:51,964 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2025-04-13 20:12:51,965 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 108 flow. Second operand 8 states and 212 transitions. [2025-04-13 20:12:51,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 399 flow [2025-04-13 20:12:51,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 373 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-13 20:12:51,975 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 144 flow [2025-04-13 20:12:51,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-04-13 20:12:51,980 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2025-04-13 20:12:51,980 INFO L485 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 144 flow [2025-04-13 20:12:51,981 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:51,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:12:51,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:12:51,981 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 20:12:51,981 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 20:12:51,983 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:12:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash 73056526, now seen corresponding path program 2 times [2025-04-13 20:12:51,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:12:51,984 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563732232] [2025-04-13 20:12:51,984 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 20:12:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:12:51,996 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 1 equivalence classes. [2025-04-13 20:12:52,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 20:12:52,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:12:52,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:12:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:12:52,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:12:52,080 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563732232] [2025-04-13 20:12:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563732232] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:12:52,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:12:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:12:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725018035] [2025-04-13 20:12:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:12:52,081 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:12:52,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:12:52,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:12:52,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:12:52,084 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2025-04-13 20:12:52,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:52,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:12:52,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2025-04-13 20:12:52,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:12:52,180 INFO L116 PetriNetUnfolderBase]: 200/504 cut-off events. [2025-04-13 20:12:52,180 INFO L117 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-04-13 20:12:52,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 504 events. 200/504 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2340 event pairs, 111 based on Foata normal form. 4/458 useless extension candidates. Maximal degree in co-relation 950. Up to 235 conditions per place. [2025-04-13 20:12:52,184 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 34 selfloop transitions, 2 changer transitions 1/60 dead transitions. [2025-04-13 20:12:52,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 233 flow [2025-04-13 20:12:52,186 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:12:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:12:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-04-13 20:12:52,186 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2025-04-13 20:12:52,186 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 144 flow. Second operand 3 states and 98 transitions. [2025-04-13 20:12:52,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 233 flow [2025-04-13 20:12:52,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 231 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-13 20:12:52,188 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 150 flow [2025-04-13 20:12:52,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-04-13 20:12:52,189 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2025-04-13 20:12:52,189 INFO L485 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 150 flow [2025-04-13 20:12:52,189 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:52,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:12:52,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:12:52,189 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 20:12:52,189 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 20:12:52,191 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:12:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash 983846396, now seen corresponding path program 3 times [2025-04-13 20:12:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:12:52,191 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941087444] [2025-04-13 20:12:52,191 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 20:12:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:12:52,205 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 1 equivalence classes. [2025-04-13 20:12:52,217 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 20:12:52,217 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 20:12:52,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:12:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:12:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:12:52,497 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941087444] [2025-04-13 20:12:52,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941087444] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:12:52,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:12:52,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:12:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580169999] [2025-04-13 20:12:52,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:12:52,498 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:12:52,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:12:52,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:12:52,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:12:52,520 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2025-04-13 20:12:52,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:52,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:12:52,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2025-04-13 20:12:52,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:12:52,720 INFO L116 PetriNetUnfolderBase]: 308/755 cut-off events. [2025-04-13 20:12:52,720 INFO L117 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-04-13 20:12:52,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 755 events. 308/755 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3901 event pairs, 111 based on Foata normal form. 4/735 useless extension candidates. Maximal degree in co-relation 594. Up to 354 conditions per place. [2025-04-13 20:12:52,723 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 49 selfloop transitions, 13 changer transitions 1/80 dead transitions. [2025-04-13 20:12:52,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 345 flow [2025-04-13 20:12:52,723 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 20:12:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 20:12:52,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2025-04-13 20:12:52,724 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2025-04-13 20:12:52,724 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 150 flow. Second operand 7 states and 165 transitions. [2025-04-13 20:12:52,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 345 flow [2025-04-13 20:12:52,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:12:52,727 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 219 flow [2025-04-13 20:12:52,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2025-04-13 20:12:52,728 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2025-04-13 20:12:52,728 INFO L485 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 219 flow [2025-04-13 20:12:52,728 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:52,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:12:52,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:12:52,728 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 20:12:52,728 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 20:12:52,729 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:12:52,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1345002774, now seen corresponding path program 4 times [2025-04-13 20:12:52,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:12:52,729 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917671512] [2025-04-13 20:12:52,729 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 20:12:52,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:12:52,735 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-04-13 20:12:52,749 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 20:12:52,750 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 20:12:52,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:12:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:12:52,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:12:52,900 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917671512] [2025-04-13 20:12:52,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917671512] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:12:52,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:12:52,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 20:12:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864520579] [2025-04-13 20:12:52,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:12:52,900 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:12:52,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:12:52,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:12:52,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:12:52,917 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2025-04-13 20:12:52,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:52,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:12:52,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2025-04-13 20:12:52,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:12:53,153 INFO L116 PetriNetUnfolderBase]: 293/721 cut-off events. [2025-04-13 20:12:53,154 INFO L117 PetriNetUnfolderBase]: For 223/231 co-relation queries the response was YES. [2025-04-13 20:12:53,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1781 conditions, 721 events. 293/721 cut-off events. For 223/231 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3715 event pairs, 94 based on Foata normal form. 6/724 useless extension candidates. Maximal degree in co-relation 841. Up to 187 conditions per place. [2025-04-13 20:12:53,157 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 53 selfloop transitions, 10 changer transitions 19/99 dead transitions. [2025-04-13 20:12:53,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 99 transitions, 502 flow [2025-04-13 20:12:53,158 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 20:12:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 20:12:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2025-04-13 20:12:53,159 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.49754901960784315 [2025-04-13 20:12:53,159 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 219 flow. Second operand 8 states and 203 transitions. [2025-04-13 20:12:53,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 99 transitions, 502 flow [2025-04-13 20:12:53,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 20:12:53,178 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 225 flow [2025-04-13 20:12:53,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=225, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2025-04-13 20:12:53,179 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2025-04-13 20:12:53,179 INFO L485 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 225 flow [2025-04-13 20:12:53,180 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:53,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:12:53,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:12:53,180 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 20:12:53,180 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 20:12:53,180 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:12:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1819819098, now seen corresponding path program 5 times [2025-04-13 20:12:53,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:12:53,181 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411964212] [2025-04-13 20:12:53,181 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 20:12:53,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:12:53,187 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 1 equivalence classes. [2025-04-13 20:12:53,192 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 20:12:53,192 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 20:12:53,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:12:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:12:53,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:12:53,377 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411964212] [2025-04-13 20:12:53,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411964212] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:12:53,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:12:53,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:12:53,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683326971] [2025-04-13 20:12:53,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:12:53,378 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:12:53,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:12:53,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:12:53,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:12:53,397 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2025-04-13 20:12:53,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:53,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:12:53,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2025-04-13 20:12:53,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:12:53,585 INFO L116 PetriNetUnfolderBase]: 238/611 cut-off events. [2025-04-13 20:12:53,585 INFO L117 PetriNetUnfolderBase]: For 238/254 co-relation queries the response was YES. [2025-04-13 20:12:53,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 611 events. 238/611 cut-off events. For 238/254 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2922 event pairs, 91 based on Foata normal form. 13/617 useless extension candidates. Maximal degree in co-relation 1494. Up to 330 conditions per place. [2025-04-13 20:12:53,588 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 42 selfloop transitions, 8 changer transitions 10/75 dead transitions. [2025-04-13 20:12:53,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 397 flow [2025-04-13 20:12:53,588 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 20:12:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 20:12:53,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2025-04-13 20:12:53,589 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4369747899159664 [2025-04-13 20:12:53,589 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 225 flow. Second operand 7 states and 156 transitions. [2025-04-13 20:12:53,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 397 flow [2025-04-13 20:12:53,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 373 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-04-13 20:12:53,592 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 240 flow [2025-04-13 20:12:53,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2025-04-13 20:12:53,595 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2025-04-13 20:12:53,595 INFO L485 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 240 flow [2025-04-13 20:12:53,595 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:53,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:12:53,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:12:53,596 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 20:12:53,596 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 20:12:53,596 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:12:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1464813388, now seen corresponding path program 6 times [2025-04-13 20:12:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:12:53,596 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23685519] [2025-04-13 20:12:53,596 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 20:12:53,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:12:53,608 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 1 equivalence classes. [2025-04-13 20:12:53,613 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 20:12:53,613 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-13 20:12:53,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:12:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:12:53,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:12:53,643 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23685519] [2025-04-13 20:12:53,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23685519] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:12:53,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:12:53,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:12:53,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332315834] [2025-04-13 20:12:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:12:53,643 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:12:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:12:53,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:12:53,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:12:53,645 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2025-04-13 20:12:53,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:53,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:12:53,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2025-04-13 20:12:53,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:12:53,697 INFO L116 PetriNetUnfolderBase]: 122/375 cut-off events. [2025-04-13 20:12:53,697 INFO L117 PetriNetUnfolderBase]: For 276/284 co-relation queries the response was YES. [2025-04-13 20:12:53,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 375 events. 122/375 cut-off events. For 276/284 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1661 event pairs, 76 based on Foata normal form. 8/379 useless extension candidates. Maximal degree in co-relation 622. Up to 188 conditions per place. [2025-04-13 20:12:53,699 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 38 selfloop transitions, 2 changer transitions 2/63 dead transitions. [2025-04-13 20:12:53,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 347 flow [2025-04-13 20:12:53,700 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:12:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:12:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-04-13 20:12:53,700 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2025-04-13 20:12:53,700 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 240 flow. Second operand 3 states and 98 transitions. [2025-04-13 20:12:53,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 347 flow [2025-04-13 20:12:53,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 307 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-04-13 20:12:53,702 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 192 flow [2025-04-13 20:12:53,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2025-04-13 20:12:53,703 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2025-04-13 20:12:53,703 INFO L485 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 192 flow [2025-04-13 20:12:53,703 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:53,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:12:53,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:12:53,703 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 20:12:53,703 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 20:12:53,704 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:12:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash 947657, now seen corresponding path program 1 times [2025-04-13 20:12:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:12:53,704 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535082940] [2025-04-13 20:12:53,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:12:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:12:53,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:12:53,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:12:53,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:12:53,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:12:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:12:53,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:12:53,800 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535082940] [2025-04-13 20:12:53,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535082940] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:12:53,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:12:53,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:12:53,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282837734] [2025-04-13 20:12:53,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:12:53,800 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:12:53,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:12:53,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:12:53,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:12:53,806 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2025-04-13 20:12:53,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:53,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:12:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2025-04-13 20:12:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:12:53,928 INFO L116 PetriNetUnfolderBase]: 121/362 cut-off events. [2025-04-13 20:12:53,928 INFO L117 PetriNetUnfolderBase]: For 187/191 co-relation queries the response was YES. [2025-04-13 20:12:53,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 362 events. 121/362 cut-off events. For 187/191 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1552 event pairs, 54 based on Foata normal form. 6/365 useless extension candidates. Maximal degree in co-relation 498. Up to 182 conditions per place. [2025-04-13 20:12:53,930 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 29 selfloop transitions, 5 changer transitions 17/69 dead transitions. [2025-04-13 20:12:53,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 347 flow [2025-04-13 20:12:53,930 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 20:12:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 20:12:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2025-04-13 20:12:53,931 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-04-13 20:12:53,931 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 192 flow. Second operand 7 states and 170 transitions. [2025-04-13 20:12:53,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 347 flow [2025-04-13 20:12:53,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 341 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 20:12:53,933 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 175 flow [2025-04-13 20:12:53,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=175, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2025-04-13 20:12:53,934 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2025-04-13 20:12:53,934 INFO L485 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 175 flow [2025-04-13 20:12:53,934 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:53,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:12:53,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:12:53,935 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 20:12:53,935 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 20:12:53,935 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:12:53,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1926203876, now seen corresponding path program 1 times [2025-04-13 20:12:53,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:12:53,935 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296672140] [2025-04-13 20:12:53,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:12:53,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:12:53,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-13 20:12:53,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-13 20:12:53,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:12:53,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:12:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 20:12:54,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:12:54,040 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296672140] [2025-04-13 20:12:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296672140] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:12:54,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:12:54,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 20:12:54,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521247350] [2025-04-13 20:12:54,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:12:54,040 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 20:12:54,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:12:54,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 20:12:54,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-04-13 20:12:54,052 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2025-04-13 20:12:54,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:54,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:12:54,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2025-04-13 20:12:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:12:54,109 INFO L116 PetriNetUnfolderBase]: 27/106 cut-off events. [2025-04-13 20:12:54,109 INFO L117 PetriNetUnfolderBase]: For 65/67 co-relation queries the response was YES. [2025-04-13 20:12:54,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 106 events. 27/106 cut-off events. For 65/67 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 247 event pairs, 11 based on Foata normal form. 6/112 useless extension candidates. Maximal degree in co-relation 207. Up to 33 conditions per place. [2025-04-13 20:12:54,110 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2025-04-13 20:12:54,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 40 transitions, 194 flow [2025-04-13 20:12:54,110 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 20:12:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-13 20:12:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2025-04-13 20:12:54,111 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.41456582633053224 [2025-04-13 20:12:54,111 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 175 flow. Second operand 7 states and 148 transitions. [2025-04-13 20:12:54,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 40 transitions, 194 flow [2025-04-13 20:12:54,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 152 flow, removed 6 selfloop flow, removed 13 redundant places. [2025-04-13 20:12:54,112 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2025-04-13 20:12:54,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2025-04-13 20:12:54,112 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2025-04-13 20:12:54,112 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2025-04-13 20:12:54,113 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 20:12:54,114 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 20:12:54,115 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 20:12:54,115 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 20:12:54,115 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-13 20:12:54,115 INFO L422 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2025-04-13 20:12:54,117 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 20:12:54,117 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 20:12:54,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 08:12:54 BasicIcfg [2025-04-13 20:12:54,121 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 20:12:54,121 INFO L158 Benchmark]: Toolchain (without parser) took 3854.07ms. Allocated memory was 155.2MB in the beginning and 364.9MB in the end (delta: 209.7MB). Free memory was 110.2MB in the beginning and 285.0MB in the end (delta: -174.8MB). Peak memory consumption was 34.1MB. Max. memory is 8.0GB. [2025-04-13 20:12:54,121 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:12:54,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.86ms. Allocated memory is still 155.2MB. Free memory was 110.2MB in the beginning and 95.0MB in the end (delta: 15.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 20:12:54,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.12ms. Allocated memory is still 155.2MB. Free memory was 95.0MB in the beginning and 93.4MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 20:12:54,122 INFO L158 Benchmark]: Boogie Preprocessor took 45.77ms. Allocated memory is still 155.2MB. Free memory was 93.4MB in the beginning and 91.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:12:54,122 INFO L158 Benchmark]: RCFGBuilder took 428.86ms. Allocated memory is still 155.2MB. Free memory was 91.7MB in the beginning and 62.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2025-04-13 20:12:54,122 INFO L158 Benchmark]: TraceAbstraction took 3087.43ms. Allocated memory was 155.2MB in the beginning and 364.9MB in the end (delta: 209.7MB). Free memory was 61.5MB in the beginning and 285.0MB in the end (delta: -223.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:12:54,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 256.86ms. Allocated memory is still 155.2MB. Free memory was 110.2MB in the beginning and 95.0MB in the end (delta: 15.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.12ms. Allocated memory is still 155.2MB. Free memory was 95.0MB in the beginning and 93.4MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.77ms. Allocated memory is still 155.2MB. Free memory was 93.4MB in the beginning and 91.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 428.86ms. Allocated memory is still 155.2MB. Free memory was 91.7MB in the beginning and 62.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 3087.43ms. Allocated memory was 155.2MB in the beginning and 364.9MB in the end (delta: 209.7MB). Free memory was 61.5MB in the beginning and 285.0MB in the end (delta: -223.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 78 locations, 81 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 332 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 311 mSDsluCounter, 171 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1364 IncrementalHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 51 mSDtfsCounter, 1364 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=5, InterpolantAutomatonStates: 50, 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, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 346 ConstructedInterpolants, 0 QuantifiedInterpolants, 1004 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2025-04-13 20:12:54,137 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...