./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:39:07,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:39:07,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:39:07,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:39:07,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:39:07,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:39:07,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:39:07,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:39:07,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:39:07,497 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:39:07,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:39:07,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:39:07,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:39:07,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:39:07,497 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:39:07,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:39:07,498 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:39:07,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:39:07,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:39:07,499 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2025-03-08 17:39:07,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:39:07,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:39:07,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:39:07,734 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:39:07,734 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:39:07,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-08 17:39:08,895 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de249a63d/f2370da74c384522938e12b0b670dc6a/FLAG135ccf9c7 [2025-03-08 17:39:09,131 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:39:09,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-08 17:39:09,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de249a63d/f2370da74c384522938e12b0b670dc6a/FLAG135ccf9c7 [2025-03-08 17:39:09,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de249a63d/f2370da74c384522938e12b0b670dc6a [2025-03-08 17:39:09,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:39:09,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:39:09,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:39:09,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:39:09,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:39:09,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a79a58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09, skipping insertion in model container [2025-03-08 17:39:09,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:39:09,611 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c[1902,1915] [2025-03-08 17:39:09,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:39:09,620 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:39:09,632 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c[1902,1915] [2025-03-08 17:39:09,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:39:09,644 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:39:09,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09 WrapperNode [2025-03-08 17:39:09,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:39:09,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:39:09,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:39:09,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:39:09,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,664 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2025-03-08 17:39:09,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:39:09,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:39:09,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:39:09,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:39:09,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,686 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]. [2025-03-08 17:39:09,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,689 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:39:09,697 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:39:09,697 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:39:09,697 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:39:09,697 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (1/1) ... [2025-03-08 17:39:09,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:39:09,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:09,724 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) [2025-03-08 17:39:09,728 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 [2025-03-08 17:39:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:39:09,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-08 17:39:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-08 17:39:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-08 17:39:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-08 17:39:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:39:09,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:39:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:39:09,748 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:39:09,806 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:39:09,808 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:39:09,899 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:39:09,900 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:39:09,974 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:39:09,974 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:39:09,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:39:09 BoogieIcfgContainer [2025-03-08 17:39:09,975 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:39:09,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:39:09,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:39:09,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:39:09,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:39:09" (1/3) ... [2025-03-08 17:39:09,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b983b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:39:09, skipping insertion in model container [2025-03-08 17:39:09,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:09" (2/3) ... [2025-03-08 17:39:09,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b983b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:39:09, skipping insertion in model container [2025-03-08 17:39:09,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:39:09" (3/3) ... [2025-03-08 17:39:09,981 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2025-03-08 17:39:09,990 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:39:09,991 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy1.wvr.c that has 3 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-08 17:39:09,991 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:39:10,021 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-08 17:39:10,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2025-03-08 17:39:10,068 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-03-08 17:39:10,069 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:39:10,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-03-08 17:39:10,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2025-03-08 17:39:10,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2025-03-08 17:39:10,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:39:10,086 INFO L333 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;@4f342854, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:39:10,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-08 17:39:10,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:39:10,095 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-08 17:39:10,095 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:39:10,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:10,096 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:10,096 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:10,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:10,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1224369187, now seen corresponding path program 1 times [2025-03-08 17:39:10,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:10,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192725421] [2025-03-08 17:39:10,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:10,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:10,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 17:39:10,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 17:39:10,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:10,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192725421] [2025-03-08 17:39:10,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192725421] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:10,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:10,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 17:39:10,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383849765] [2025-03-08 17:39:10,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:10,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:39:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:10,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:39:10,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:39:10,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:10,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2025-03-08 17:39:10,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:10,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:10,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:10,386 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2025-03-08 17:39:10,386 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-08 17:39:10,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 279 event pairs, 8 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2025-03-08 17:39:10,388 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2025-03-08 17:39:10,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2025-03-08 17:39:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:39:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:39:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-03-08 17:39:10,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2025-03-08 17:39:10,398 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions. [2025-03-08 17:39:10,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2025-03-08 17:39:10,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:10,403 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-03-08 17:39:10,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2025-03-08 17:39:10,409 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2025-03-08 17:39:10,410 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-03-08 17:39:10,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2025-03-08 17:39:10,411 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:10,412 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:10,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:39:10,412 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:10,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:10,413 INFO L85 PathProgramCache]: Analyzing trace with hash 965142117, now seen corresponding path program 1 times [2025-03-08 17:39:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055736633] [2025-03-08 17:39:10,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:10,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:10,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 17:39:10,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:39:10,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:10,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:10,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:10,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055736633] [2025-03-08 17:39:10,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055736633] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:10,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:10,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:39:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749145400] [2025-03-08 17:39:10,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:10,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:39:10,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:10,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:39:10,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:39:10,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:10,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 17:39:10,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:10,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:10,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:10,595 INFO L124 PetriNetUnfolderBase]: 60/115 cut-off events. [2025-03-08 17:39:10,596 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-08 17:39:10,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 115 events. 60/115 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 324 event pairs, 6 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 79. Up to 46 conditions per place. [2025-03-08 17:39:10,597 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 26 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2025-03-08 17:39:10,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 38 transitions, 183 flow [2025-03-08 17:39:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:39:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:39:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2025-03-08 17:39:10,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2025-03-08 17:39:10,598 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 58 transitions. [2025-03-08 17:39:10,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 38 transitions, 183 flow [2025-03-08 17:39:10,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:39:10,600 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2025-03-08 17:39:10,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2025-03-08 17:39:10,600 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2025-03-08 17:39:10,600 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2025-03-08 17:39:10,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 17:39:10,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:10,601 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:10,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:39:10,601 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:10,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash -828600164, now seen corresponding path program 1 times [2025-03-08 17:39:10,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092192875] [2025-03-08 17:39:10,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:10,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 17:39:10,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:39:10,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:10,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:10,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092192875] [2025-03-08 17:39:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092192875] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142627314] [2025-03-08 17:39:10,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:10,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:10,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:10,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 17:39:10,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 17:39:10,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:39:10,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:10,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:10,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 17:39:10,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:10,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:10,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142627314] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:10,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:39:10,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-03-08 17:39:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579601746] [2025-03-08 17:39:10,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:10,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:39:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:10,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:39:10,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:39:10,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:10,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 17:39:10,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:10,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:10,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:10,891 INFO L124 PetriNetUnfolderBase]: 61/134 cut-off events. [2025-03-08 17:39:10,891 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-03-08 17:39:10,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 134 events. 61/134 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 453 event pairs, 11 based on Foata normal form. 5/137 useless extension candidates. Maximal degree in co-relation 290. Up to 52 conditions per place. [2025-03-08 17:39:10,892 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2025-03-08 17:39:10,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 256 flow [2025-03-08 17:39:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:39:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:39:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-03-08 17:39:10,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2025-03-08 17:39:10,897 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 50 transitions. [2025-03-08 17:39:10,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 256 flow [2025-03-08 17:39:10,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 17:39:10,900 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 153 flow [2025-03-08 17:39:10,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2025-03-08 17:39:10,900 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2025-03-08 17:39:10,900 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 153 flow [2025-03-08 17:39:10,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 17:39:10,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:10,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:10,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 17:39:11,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:11,102 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:11,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:11,103 INFO L85 PathProgramCache]: Analyzing trace with hash -518786202, now seen corresponding path program 2 times [2025-03-08 17:39:11,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:11,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701274550] [2025-03-08 17:39:11,103 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:11,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:11,109 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-08 17:39:11,118 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:39:11,119 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:11,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:11,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:11,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701274550] [2025-03-08 17:39:11,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701274550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:11,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:11,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:39:11,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167890646] [2025-03-08 17:39:11,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:11,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:39:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:11,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:39:11,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:39:11,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:11,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 17:39:11,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:11,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:11,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:11,233 INFO L124 PetriNetUnfolderBase]: 51/111 cut-off events. [2025-03-08 17:39:11,233 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2025-03-08 17:39:11,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 111 events. 51/111 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 328 event pairs, 6 based on Foata normal form. 2/112 useless extension candidates. Maximal degree in co-relation 276. Up to 39 conditions per place. [2025-03-08 17:39:11,234 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2025-03-08 17:39:11,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 291 flow [2025-03-08 17:39:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:39:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:39:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2025-03-08 17:39:11,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-03-08 17:39:11,236 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 153 flow. Second operand 5 states and 55 transitions. [2025-03-08 17:39:11,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 291 flow [2025-03-08 17:39:11,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 287 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-08 17:39:11,238 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 172 flow [2025-03-08 17:39:11,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2025-03-08 17:39:11,239 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2025-03-08 17:39:11,239 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 172 flow [2025-03-08 17:39:11,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 17:39:11,239 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:11,239 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:11,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:39:11,239 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:11,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:11,239 INFO L85 PathProgramCache]: Analyzing trace with hash 494082209, now seen corresponding path program 2 times [2025-03-08 17:39:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:11,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219582273] [2025-03-08 17:39:11,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:11,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:11,243 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-08 17:39:11,246 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:39:11,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:11,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:11,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:11,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219582273] [2025-03-08 17:39:11,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219582273] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:11,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574416096] [2025-03-08 17:39:11,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:11,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:11,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:11,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:11,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 17:39:11,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-08 17:39:11,315 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:39:11,315 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:11,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:11,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 17:39:11,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:11,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:11,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574416096] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:11,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:39:11,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-03-08 17:39:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800266770] [2025-03-08 17:39:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:11,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:39:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:11,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:39:11,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:39:11,383 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:11,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 17:39:11,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:11,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:11,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:11,421 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2025-03-08 17:39:11,421 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2025-03-08 17:39:11,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 93 events. 43/93 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 4 based on Foata normal form. 4/96 useless extension candidates. Maximal degree in co-relation 233. Up to 57 conditions per place. [2025-03-08 17:39:11,422 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 24 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2025-03-08 17:39:11,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 263 flow [2025-03-08 17:39:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:39:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:39:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2025-03-08 17:39:11,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2025-03-08 17:39:11,423 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 172 flow. Second operand 4 states and 46 transitions. [2025-03-08 17:39:11,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 263 flow [2025-03-08 17:39:11,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 241 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-08 17:39:11,425 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 169 flow [2025-03-08 17:39:11,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2025-03-08 17:39:11,427 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2025-03-08 17:39:11,427 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 169 flow [2025-03-08 17:39:11,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-03-08 17:39:11,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:11,427 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:11,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 17:39:11,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:11,627 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:11,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash -493455986, now seen corresponding path program 1 times [2025-03-08 17:39:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:11,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587029174] [2025-03-08 17:39:11,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:11,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-08 17:39:11,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 17:39:11,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:11,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:11,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587029174] [2025-03-08 17:39:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587029174] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348537591] [2025-03-08 17:39:11,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:11,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:11,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:11,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:11,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 17:39:11,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-08 17:39:11,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 17:39:11,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:11,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:11,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:39:11,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:11,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:11,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348537591] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:11,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:11,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-03-08 17:39:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591081885] [2025-03-08 17:39:11,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:11,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 17:39:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:11,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 17:39:12,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:39:12,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:12,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 169 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:12,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:12,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:12,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:12,125 INFO L124 PetriNetUnfolderBase]: 98/193 cut-off events. [2025-03-08 17:39:12,125 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2025-03-08 17:39:12,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 193 events. 98/193 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 644 event pairs, 0 based on Foata normal form. 17/209 useless extension candidates. Maximal degree in co-relation 274. Up to 76 conditions per place. [2025-03-08 17:39:12,129 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 38 selfloop transitions, 19 changer transitions 8/68 dead transitions. [2025-03-08 17:39:12,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 551 flow [2025-03-08 17:39:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2025-03-08 17:39:12,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-03-08 17:39:12,130 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 169 flow. Second operand 9 states and 102 transitions. [2025-03-08 17:39:12,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 551 flow [2025-03-08 17:39:12,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 504 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-08 17:39:12,133 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 346 flow [2025-03-08 17:39:12,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2025-03-08 17:39:12,134 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2025-03-08 17:39:12,134 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 346 flow [2025-03-08 17:39:12,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:12,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:12,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:12,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:12,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:12,338 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:12,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1546730822, now seen corresponding path program 2 times [2025-03-08 17:39:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:12,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311335926] [2025-03-08 17:39:12,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:12,342 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-08 17:39:12,346 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 17:39:12,347 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:12,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:12,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:12,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311335926] [2025-03-08 17:39:12,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311335926] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:12,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332752268] [2025-03-08 17:39:12,427 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:12,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:12,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:12,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:12,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 17:39:12,455 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-08 17:39:12,464 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 17:39:12,465 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:12,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:12,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 17:39:12,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:12,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:12,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332752268] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:12,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:12,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 10 [2025-03-08 17:39:12,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911843535] [2025-03-08 17:39:12,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:12,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 17:39:12,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:12,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 17:39:12,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:39:12,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:12,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 346 flow. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 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) [2025-03-08 17:39:12,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:12,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:12,702 INFO L124 PetriNetUnfolderBase]: 151/283 cut-off events. [2025-03-08 17:39:12,702 INFO L125 PetriNetUnfolderBase]: For 1246/1246 co-relation queries the response was YES. [2025-03-08 17:39:12,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 283 events. 151/283 cut-off events. For 1246/1246 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1023 event pairs, 3 based on Foata normal form. 6/288 useless extension candidates. Maximal degree in co-relation 1361. Up to 101 conditions per place. [2025-03-08 17:39:12,705 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 42 selfloop transitions, 42 changer transitions 2/89 dead transitions. [2025-03-08 17:39:12,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 89 transitions, 880 flow [2025-03-08 17:39:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 17:39:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-08 17:39:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2025-03-08 17:39:12,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2025-03-08 17:39:12,706 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 346 flow. Second operand 11 states and 114 transitions. [2025-03-08 17:39:12,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 89 transitions, 880 flow [2025-03-08 17:39:12,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 805 flow, removed 36 selfloop flow, removed 2 redundant places. [2025-03-08 17:39:12,711 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 703 flow [2025-03-08 17:39:12,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=703, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2025-03-08 17:39:12,711 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 40 predicate places. [2025-03-08 17:39:12,711 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 703 flow [2025-03-08 17:39:12,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 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) [2025-03-08 17:39:12,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:12,711 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:12,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:12,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:12,916 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:12,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1691273124, now seen corresponding path program 3 times [2025-03-08 17:39:12,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:12,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517483470] [2025-03-08 17:39:12,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:12,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:12,922 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-08 17:39:12,925 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:12,928 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:12,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:12,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:12,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517483470] [2025-03-08 17:39:12,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517483470] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363157803] [2025-03-08 17:39:12,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:12,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:12,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:12,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:12,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 17:39:12,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-08 17:39:13,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:13,004 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:13,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:13,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 17:39:13,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:13,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363157803] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:13,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:13,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-08 17:39:13,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342120699] [2025-03-08 17:39:13,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:13,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:39:13,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:13,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:39:13,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:39:13,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:13,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 703 flow. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:13,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:13,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:13,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:13,188 INFO L124 PetriNetUnfolderBase]: 169/334 cut-off events. [2025-03-08 17:39:13,189 INFO L125 PetriNetUnfolderBase]: For 2614/2614 co-relation queries the response was YES. [2025-03-08 17:39:13,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 334 events. 169/334 cut-off events. For 2614/2614 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1357 event pairs, 4 based on Foata normal form. 15/348 useless extension candidates. Maximal degree in co-relation 1799. Up to 105 conditions per place. [2025-03-08 17:39:13,191 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 61 selfloop transitions, 33 changer transitions 19/116 dead transitions. [2025-03-08 17:39:13,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 1439 flow [2025-03-08 17:39:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2025-03-08 17:39:13,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2025-03-08 17:39:13,193 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 703 flow. Second operand 9 states and 97 transitions. [2025-03-08 17:39:13,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 1439 flow [2025-03-08 17:39:13,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 116 transitions, 1232 flow, removed 100 selfloop flow, removed 3 redundant places. [2025-03-08 17:39:13,203 INFO L231 Difference]: Finished difference. Result has 70 places, 75 transitions, 844 flow [2025-03-08 17:39:13,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=70, PETRI_TRANSITIONS=75} [2025-03-08 17:39:13,203 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 50 predicate places. [2025-03-08 17:39:13,203 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 75 transitions, 844 flow [2025-03-08 17:39:13,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:13,204 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:13,204 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:13,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:13,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:13,405 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:13,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:13,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1656924602, now seen corresponding path program 4 times [2025-03-08 17:39:13,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:13,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540849129] [2025-03-08 17:39:13,405 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:13,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:13,409 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-08 17:39:13,411 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:13,411 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:13,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540849129] [2025-03-08 17:39:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540849129] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036420721] [2025-03-08 17:39:13,453 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:13,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:13,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:13,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:13,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 17:39:13,479 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-08 17:39:13,487 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:13,487 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:13,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:13,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 17:39:13,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:13,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:13,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036420721] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:13,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:13,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-08 17:39:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919276007] [2025-03-08 17:39:13,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:13,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 17:39:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:13,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 17:39:13,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:39:13,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:13,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 75 transitions, 844 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-03-08 17:39:13,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:13,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:13,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:13,730 INFO L124 PetriNetUnfolderBase]: 169/343 cut-off events. [2025-03-08 17:39:13,730 INFO L125 PetriNetUnfolderBase]: For 1860/1860 co-relation queries the response was YES. [2025-03-08 17:39:13,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 343 events. 169/343 cut-off events. For 1860/1860 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1390 event pairs, 4 based on Foata normal form. 4/346 useless extension candidates. Maximal degree in co-relation 1690. Up to 168 conditions per place. [2025-03-08 17:39:13,732 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 70 selfloop transitions, 49 changer transitions 0/122 dead transitions. [2025-03-08 17:39:13,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 1419 flow [2025-03-08 17:39:13,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:39:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:39:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2025-03-08 17:39:13,733 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-03-08 17:39:13,733 INFO L175 Difference]: Start difference. First operand has 70 places, 75 transitions, 844 flow. Second operand 12 states and 117 transitions. [2025-03-08 17:39:13,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 1419 flow [2025-03-08 17:39:13,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 122 transitions, 1329 flow, removed 41 selfloop flow, removed 2 redundant places. [2025-03-08 17:39:13,743 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 1180 flow [2025-03-08 17:39:13,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1180, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2025-03-08 17:39:13,744 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 64 predicate places. [2025-03-08 17:39:13,744 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 1180 flow [2025-03-08 17:39:13,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-03-08 17:39:13,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:13,744 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:13,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:13,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:13,945 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:13,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash 723460893, now seen corresponding path program 5 times [2025-03-08 17:39:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:13,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302038634] [2025-03-08 17:39:13,946 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:13,949 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-08 17:39:13,952 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:13,952 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:13,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:13,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302038634] [2025-03-08 17:39:13,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302038634] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452228624] [2025-03-08 17:39:13,989 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:13,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:13,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:13,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:13,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 17:39:14,016 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-08 17:39:14,024 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:14,024 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:14,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:14,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 17:39:14,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:14,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452228624] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:14,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:14,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-03-08 17:39:14,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001334486] [2025-03-08 17:39:14,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:14,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 17:39:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:14,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 17:39:14,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:39:14,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:14,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 1180 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-03-08 17:39:14,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:14,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:14,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:14,219 INFO L124 PetriNetUnfolderBase]: 172/366 cut-off events. [2025-03-08 17:39:14,219 INFO L125 PetriNetUnfolderBase]: For 2400/2400 co-relation queries the response was YES. [2025-03-08 17:39:14,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 366 events. 172/366 cut-off events. For 2400/2400 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1590 event pairs, 11 based on Foata normal form. 4/369 useless extension candidates. Maximal degree in co-relation 1908. Up to 121 conditions per place. [2025-03-08 17:39:14,222 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 74 selfloop transitions, 40 changer transitions 6/123 dead transitions. [2025-03-08 17:39:14,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 123 transitions, 1617 flow [2025-03-08 17:39:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2025-03-08 17:39:14,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2025-03-08 17:39:14,223 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 1180 flow. Second operand 9 states and 91 transitions. [2025-03-08 17:39:14,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 123 transitions, 1617 flow [2025-03-08 17:39:14,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 123 transitions, 1531 flow, removed 25 selfloop flow, removed 3 redundant places. [2025-03-08 17:39:14,234 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 1239 flow [2025-03-08 17:39:14,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2025-03-08 17:39:14,235 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2025-03-08 17:39:14,235 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 1239 flow [2025-03-08 17:39:14,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-03-08 17:39:14,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:14,235 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:14,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 17:39:14,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:14,440 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:14,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1442805150, now seen corresponding path program 6 times [2025-03-08 17:39:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:14,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689262278] [2025-03-08 17:39:14,441 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:14,444 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-03-08 17:39:14,446 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:14,446 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:14,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:14,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:14,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689262278] [2025-03-08 17:39:14,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689262278] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:14,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781337410] [2025-03-08 17:39:14,479 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:14,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:14,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:14,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:14,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 17:39:14,506 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-03-08 17:39:14,514 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:14,514 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:14,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:14,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 17:39:14,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:14,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:14,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781337410] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:14,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:14,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-03-08 17:39:14,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253749306] [2025-03-08 17:39:14,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:14,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 17:39:14,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:14,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 17:39:14,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:39:14,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:14,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 1239 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-03-08 17:39:14,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:14,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:14,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:14,730 INFO L124 PetriNetUnfolderBase]: 156/316 cut-off events. [2025-03-08 17:39:14,730 INFO L125 PetriNetUnfolderBase]: For 1771/1771 co-relation queries the response was YES. [2025-03-08 17:39:14,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 316 events. 156/316 cut-off events. For 1771/1771 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1267 event pairs, 4 based on Foata normal form. 6/321 useless extension candidates. Maximal degree in co-relation 1693. Up to 144 conditions per place. [2025-03-08 17:39:14,733 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 72 selfloop transitions, 39 changer transitions 2/116 dead transitions. [2025-03-08 17:39:14,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 116 transitions, 1508 flow [2025-03-08 17:39:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:39:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:39:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2025-03-08 17:39:14,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-03-08 17:39:14,734 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 1239 flow. Second operand 10 states and 94 transitions. [2025-03-08 17:39:14,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 116 transitions, 1508 flow [2025-03-08 17:39:14,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 1420 flow, removed 21 selfloop flow, removed 5 redundant places. [2025-03-08 17:39:14,745 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 1147 flow [2025-03-08 17:39:14,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1147, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2025-03-08 17:39:14,746 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 75 predicate places. [2025-03-08 17:39:14,747 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 1147 flow [2025-03-08 17:39:14,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-03-08 17:39:14,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:14,747 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:14,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:14,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 17:39:14,948 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:14,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1117916897, now seen corresponding path program 7 times [2025-03-08 17:39:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:14,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021733923] [2025-03-08 17:39:14,948 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:14,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:39:14,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:14,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:14,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:14,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:14,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021733923] [2025-03-08 17:39:14,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021733923] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:14,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843124422] [2025-03-08 17:39:14,987 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:14,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:14,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:14,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:14,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 17:39:15,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:39:15,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:39:15,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:15,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:15,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 17:39:15,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843124422] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:15,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:15,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-08 17:39:15,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846861705] [2025-03-08 17:39:15,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:15,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:39:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:15,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:39:15,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:39:15,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:15,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 1147 flow. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:15,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:15,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:15,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:15,184 INFO L124 PetriNetUnfolderBase]: 150/304 cut-off events. [2025-03-08 17:39:15,184 INFO L125 PetriNetUnfolderBase]: For 1601/1601 co-relation queries the response was YES. [2025-03-08 17:39:15,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 304 events. 150/304 cut-off events. For 1601/1601 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1186 event pairs, 5 based on Foata normal form. 4/307 useless extension candidates. Maximal degree in co-relation 1603. Up to 107 conditions per place. [2025-03-08 17:39:15,187 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 72 selfloop transitions, 33 changer transitions 4/112 dead transitions. [2025-03-08 17:39:15,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 1438 flow [2025-03-08 17:39:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-08 17:39:15,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2025-03-08 17:39:15,188 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 1147 flow. Second operand 9 states and 88 transitions. [2025-03-08 17:39:15,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 1438 flow [2025-03-08 17:39:15,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 1332 flow, removed 13 selfloop flow, removed 6 redundant places. [2025-03-08 17:39:15,197 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 1096 flow [2025-03-08 17:39:15,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2025-03-08 17:39:15,197 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 79 predicate places. [2025-03-08 17:39:15,197 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 1096 flow [2025-03-08 17:39:15,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:15,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:15,197 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:15,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:15,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:15,398 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:15,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:15,398 INFO L85 PathProgramCache]: Analyzing trace with hash -19155735, now seen corresponding path program 8 times [2025-03-08 17:39:15,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:15,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864134841] [2025-03-08 17:39:15,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:15,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:15,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:15,404 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:15,404 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:15,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864134841] [2025-03-08 17:39:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864134841] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953780835] [2025-03-08 17:39:15,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:15,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:15,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:15,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:15,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 17:39:15,489 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:15,497 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:15,497 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:15,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:15,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 17:39:15,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953780835] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:15,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:15,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2025-03-08 17:39:15,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105461801] [2025-03-08 17:39:15,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:15,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 17:39:15,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:15,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 17:39:15,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:39:15,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:15,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 1096 flow. Second operand has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 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) [2025-03-08 17:39:15,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:15,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:15,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:15,767 INFO L124 PetriNetUnfolderBase]: 247/499 cut-off events. [2025-03-08 17:39:15,768 INFO L125 PetriNetUnfolderBase]: For 2970/2970 co-relation queries the response was YES. [2025-03-08 17:39:15,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2933 conditions, 499 events. 247/499 cut-off events. For 2970/2970 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2281 event pairs, 5 based on Foata normal form. 16/514 useless extension candidates. Maximal degree in co-relation 2797. Up to 233 conditions per place. [2025-03-08 17:39:15,771 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 109 selfloop transitions, 48 changer transitions 3/163 dead transitions. [2025-03-08 17:39:15,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 163 transitions, 2128 flow [2025-03-08 17:39:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:39:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:39:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2025-03-08 17:39:15,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2025-03-08 17:39:15,772 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 1096 flow. Second operand 10 states and 118 transitions. [2025-03-08 17:39:15,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 163 transitions, 2128 flow [2025-03-08 17:39:15,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 2055 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-03-08 17:39:15,786 INFO L231 Difference]: Finished difference. Result has 108 places, 124 transitions, 1636 flow [2025-03-08 17:39:15,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1636, PETRI_PLACES=108, PETRI_TRANSITIONS=124} [2025-03-08 17:39:15,786 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 88 predicate places. [2025-03-08 17:39:15,786 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 124 transitions, 1636 flow [2025-03-08 17:39:15,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 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) [2025-03-08 17:39:15,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:15,786 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:15,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:15,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 17:39:15,987 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:15,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:15,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1113936415, now seen corresponding path program 9 times [2025-03-08 17:39:15,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:15,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073446728] [2025-03-08 17:39:15,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:15,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:15,990 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:15,993 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:15,993 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:15,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073446728] [2025-03-08 17:39:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073446728] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266468149] [2025-03-08 17:39:16,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:16,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:16,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:16,063 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:16,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 17:39:16,091 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:16,100 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:16,100 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:16,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:16,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 17:39:16,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:16,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266468149] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:16,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:16,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2025-03-08 17:39:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23719300] [2025-03-08 17:39:16,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:16,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 17:39:16,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:16,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 17:39:16,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:39:16,201 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:16,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 124 transitions, 1636 flow. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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) [2025-03-08 17:39:16,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:16,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:16,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:16,477 INFO L124 PetriNetUnfolderBase]: 369/733 cut-off events. [2025-03-08 17:39:16,478 INFO L125 PetriNetUnfolderBase]: For 5981/5981 co-relation queries the response was YES. [2025-03-08 17:39:16,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4848 conditions, 733 events. 369/733 cut-off events. For 5981/5981 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3761 event pairs, 2 based on Foata normal form. 34/766 useless extension candidates. Maximal degree in co-relation 4738. Up to 200 conditions per place. [2025-03-08 17:39:16,483 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 103 selfloop transitions, 104 changer transitions 30/240 dead transitions. [2025-03-08 17:39:16,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 240 transitions, 3377 flow [2025-03-08 17:39:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 17:39:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-08 17:39:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 209 transitions. [2025-03-08 17:39:16,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5805555555555556 [2025-03-08 17:39:16,485 INFO L175 Difference]: Start difference. First operand has 108 places, 124 transitions, 1636 flow. Second operand 20 states and 209 transitions. [2025-03-08 17:39:16,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 240 transitions, 3377 flow [2025-03-08 17:39:16,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 240 transitions, 3240 flow, removed 32 selfloop flow, removed 5 redundant places. [2025-03-08 17:39:16,513 INFO L231 Difference]: Finished difference. Result has 139 places, 167 transitions, 2532 flow [2025-03-08 17:39:16,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2532, PETRI_PLACES=139, PETRI_TRANSITIONS=167} [2025-03-08 17:39:16,514 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 119 predicate places. [2025-03-08 17:39:16,514 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 167 transitions, 2532 flow [2025-03-08 17:39:16,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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) [2025-03-08 17:39:16,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:16,515 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:16,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:16,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 17:39:16,719 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:16,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:16,719 INFO L85 PathProgramCache]: Analyzing trace with hash 245762373, now seen corresponding path program 10 times [2025-03-08 17:39:16,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:16,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899249022] [2025-03-08 17:39:16,719 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:16,722 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:16,727 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:16,727 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:16,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:16,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899249022] [2025-03-08 17:39:16,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899249022] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310246376] [2025-03-08 17:39:16,809 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:16,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:16,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:16,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 17:39:16,835 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:16,843 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:16,843 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:16,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:16,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 17:39:16,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:16,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:17,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310246376] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:17,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:17,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 15 [2025-03-08 17:39:17,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109854368] [2025-03-08 17:39:17,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:17,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 17:39:17,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:17,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 17:39:17,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2025-03-08 17:39:17,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:17,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 167 transitions, 2532 flow. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 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) [2025-03-08 17:39:17,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:17,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:17,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:17,378 INFO L124 PetriNetUnfolderBase]: 449/883 cut-off events. [2025-03-08 17:39:17,378 INFO L125 PetriNetUnfolderBase]: For 16894/16894 co-relation queries the response was YES. [2025-03-08 17:39:17,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6952 conditions, 883 events. 449/883 cut-off events. For 16894/16894 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4546 event pairs, 18 based on Foata normal form. 35/917 useless extension candidates. Maximal degree in co-relation 6776. Up to 475 conditions per place. [2025-03-08 17:39:17,385 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 166 selfloop transitions, 88 changer transitions 9/266 dead transitions. [2025-03-08 17:39:17,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 266 transitions, 4476 flow [2025-03-08 17:39:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 17:39:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-08 17:39:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 200 transitions. [2025-03-08 17:39:17,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-08 17:39:17,387 INFO L175 Difference]: Start difference. First operand has 139 places, 167 transitions, 2532 flow. Second operand 20 states and 200 transitions. [2025-03-08 17:39:17,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 266 transitions, 4476 flow [2025-03-08 17:39:17,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 266 transitions, 4090 flow, removed 191 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:17,456 INFO L231 Difference]: Finished difference. Result has 164 places, 218 transitions, 3420 flow [2025-03-08 17:39:17,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3420, PETRI_PLACES=164, PETRI_TRANSITIONS=218} [2025-03-08 17:39:17,456 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 144 predicate places. [2025-03-08 17:39:17,456 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 218 transitions, 3420 flow [2025-03-08 17:39:17,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 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) [2025-03-08 17:39:17,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:17,456 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:17,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:17,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 17:39:17,657 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:17,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash -593061075, now seen corresponding path program 11 times [2025-03-08 17:39:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973114007] [2025-03-08 17:39:17,658 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:17,660 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:17,662 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:17,662 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:17,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:17,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973114007] [2025-03-08 17:39:17,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973114007] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116874832] [2025-03-08 17:39:17,710 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:17,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:17,712 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:17,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 17:39:17,734 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:17,742 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:17,742 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:17,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:17,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:39:17,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:17,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:17,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116874832] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:17,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:17,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-08 17:39:17,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628647616] [2025-03-08 17:39:17,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:17,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 17:39:17,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:17,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 17:39:17,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:39:17,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:17,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 218 transitions, 3420 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2025-03-08 17:39:17,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:17,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:17,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:18,061 INFO L124 PetriNetUnfolderBase]: 477/953 cut-off events. [2025-03-08 17:39:18,062 INFO L125 PetriNetUnfolderBase]: For 23519/23519 co-relation queries the response was YES. [2025-03-08 17:39:18,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8006 conditions, 953 events. 477/953 cut-off events. For 23519/23519 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5068 event pairs, 9 based on Foata normal form. 30/982 useless extension candidates. Maximal degree in co-relation 7860. Up to 308 conditions per place. [2025-03-08 17:39:18,070 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 135 selfloop transitions, 142 changer transitions 21/301 dead transitions. [2025-03-08 17:39:18,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 301 transitions, 5565 flow [2025-03-08 17:39:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:39:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:39:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2025-03-08 17:39:18,071 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2025-03-08 17:39:18,071 INFO L175 Difference]: Start difference. First operand has 164 places, 218 transitions, 3420 flow. Second operand 12 states and 123 transitions. [2025-03-08 17:39:18,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 301 transitions, 5565 flow [2025-03-08 17:39:18,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 301 transitions, 4791 flow, removed 350 selfloop flow, removed 6 redundant places. [2025-03-08 17:39:18,145 INFO L231 Difference]: Finished difference. Result has 174 places, 252 transitions, 4261 flow [2025-03-08 17:39:18,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2996, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4261, PETRI_PLACES=174, PETRI_TRANSITIONS=252} [2025-03-08 17:39:18,145 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 154 predicate places. [2025-03-08 17:39:18,145 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 252 transitions, 4261 flow [2025-03-08 17:39:18,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2025-03-08 17:39:18,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:18,146 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:18,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:18,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 17:39:18,350 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:18,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash -207972259, now seen corresponding path program 12 times [2025-03-08 17:39:18,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:18,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648094474] [2025-03-08 17:39:18,352 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:18,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:18,355 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-03-08 17:39:18,358 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:18,358 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-08 17:39:18,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:18,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:18,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648094474] [2025-03-08 17:39:18,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648094474] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:18,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017732982] [2025-03-08 17:39:18,400 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:18,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:18,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:18,401 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:18,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 17:39:18,424 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-03-08 17:39:18,432 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:18,433 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-08 17:39:18,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:18,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:39:18,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:18,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017732982] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:18,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:18,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-08 17:39:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771875506] [2025-03-08 17:39:18,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:18,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 17:39:18,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:18,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 17:39:18,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:39:18,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:18,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 252 transitions, 4261 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-03-08 17:39:18,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:18,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:18,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:18,859 INFO L124 PetriNetUnfolderBase]: 539/1076 cut-off events. [2025-03-08 17:39:18,859 INFO L125 PetriNetUnfolderBase]: For 28978/28978 co-relation queries the response was YES. [2025-03-08 17:39:18,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9247 conditions, 1076 events. 539/1076 cut-off events. For 28978/28978 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5851 event pairs, 12 based on Foata normal form. 6/1081 useless extension candidates. Maximal degree in co-relation 9071. Up to 339 conditions per place. [2025-03-08 17:39:18,868 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 135 selfloop transitions, 213 changer transitions 0/351 dead transitions. [2025-03-08 17:39:18,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 351 transitions, 6626 flow [2025-03-08 17:39:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 17:39:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-08 17:39:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 154 transitions. [2025-03-08 17:39:18,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2025-03-08 17:39:18,870 INFO L175 Difference]: Start difference. First operand has 174 places, 252 transitions, 4261 flow. Second operand 16 states and 154 transitions. [2025-03-08 17:39:18,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 351 transitions, 6626 flow [2025-03-08 17:39:18,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 351 transitions, 5972 flow, removed 325 selfloop flow, removed 2 redundant places. [2025-03-08 17:39:18,981 INFO L231 Difference]: Finished difference. Result has 194 places, 314 transitions, 5884 flow [2025-03-08 17:39:18,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3907, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5884, PETRI_PLACES=194, PETRI_TRANSITIONS=314} [2025-03-08 17:39:18,981 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 174 predicate places. [2025-03-08 17:39:18,981 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 314 transitions, 5884 flow [2025-03-08 17:39:18,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-03-08 17:39:18,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:18,981 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:18,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:19,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:19,182 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:19,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:19,182 INFO L85 PathProgramCache]: Analyzing trace with hash -295089598, now seen corresponding path program 13 times [2025-03-08 17:39:19,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318257222] [2025-03-08 17:39:19,183 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:19,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:19,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:39:19,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:19,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:19,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:19,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318257222] [2025-03-08 17:39:19,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318257222] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:19,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668845600] [2025-03-08 17:39:19,220 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:19,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:19,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:19,222 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:19,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 17:39:19,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:39:19,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:19,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:19,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:19,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:39:19,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668845600] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:19,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:19,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-08 17:39:19,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123833841] [2025-03-08 17:39:19,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:19,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 17:39:19,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:19,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 17:39:19,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:39:19,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:19,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 314 transitions, 5884 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-03-08 17:39:19,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:19,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:19,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:19,594 INFO L124 PetriNetUnfolderBase]: 568/1152 cut-off events. [2025-03-08 17:39:19,594 INFO L125 PetriNetUnfolderBase]: For 25580/25580 co-relation queries the response was YES. [2025-03-08 17:39:19,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10079 conditions, 1152 events. 568/1152 cut-off events. For 25580/25580 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6515 event pairs, 25 based on Foata normal form. 8/1159 useless extension candidates. Maximal degree in co-relation 9893. Up to 438 conditions per place. [2025-03-08 17:39:19,605 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 231 selfloop transitions, 128 changer transitions 10/372 dead transitions. [2025-03-08 17:39:19,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 372 transitions, 7708 flow [2025-03-08 17:39:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 17:39:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-08 17:39:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 132 transitions. [2025-03-08 17:39:19,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-03-08 17:39:19,606 INFO L175 Difference]: Start difference. First operand has 194 places, 314 transitions, 5884 flow. Second operand 14 states and 132 transitions. [2025-03-08 17:39:19,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 372 transitions, 7708 flow [2025-03-08 17:39:19,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 372 transitions, 7204 flow, removed 236 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:19,729 INFO L231 Difference]: Finished difference. Result has 208 places, 336 transitions, 6548 flow [2025-03-08 17:39:19,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5541, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6548, PETRI_PLACES=208, PETRI_TRANSITIONS=336} [2025-03-08 17:39:19,730 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 188 predicate places. [2025-03-08 17:39:19,730 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 336 transitions, 6548 flow [2025-03-08 17:39:19,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-03-08 17:39:19,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:19,730 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:19,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-08 17:39:19,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 17:39:19,933 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:19,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1442547693, now seen corresponding path program 14 times [2025-03-08 17:39:19,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:19,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812422213] [2025-03-08 17:39:19,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:19,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:19,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:19,937 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:19,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:19,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812422213] [2025-03-08 17:39:19,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812422213] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618014884] [2025-03-08 17:39:19,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:19,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:19,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:19,972 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:19,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-08 17:39:19,996 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:20,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:20,004 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:20,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:20,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:39:20,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:20,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:20,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618014884] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:20,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:20,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-08 17:39:20,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573044967] [2025-03-08 17:39:20,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:20,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 17:39:20,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:20,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 17:39:20,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:39:20,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:20,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 336 transitions, 6548 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-03-08 17:39:20,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:20,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:20,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:20,359 INFO L124 PetriNetUnfolderBase]: 571/1102 cut-off events. [2025-03-08 17:39:20,359 INFO L125 PetriNetUnfolderBase]: For 18991/18991 co-relation queries the response was YES. [2025-03-08 17:39:20,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9755 conditions, 1102 events. 571/1102 cut-off events. For 18991/18991 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5896 event pairs, 12 based on Foata normal form. 15/1116 useless extension candidates. Maximal degree in co-relation 9642. Up to 340 conditions per place. [2025-03-08 17:39:20,368 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 178 selfloop transitions, 180 changer transitions 10/371 dead transitions. [2025-03-08 17:39:20,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 371 transitions, 7635 flow [2025-03-08 17:39:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 17:39:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-08 17:39:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 151 transitions. [2025-03-08 17:39:20,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2025-03-08 17:39:20,370 INFO L175 Difference]: Start difference. First operand has 208 places, 336 transitions, 6548 flow. Second operand 16 states and 151 transitions. [2025-03-08 17:39:20,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 371 transitions, 7635 flow [2025-03-08 17:39:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 371 transitions, 7316 flow, removed 133 selfloop flow, removed 6 redundant places. [2025-03-08 17:39:20,471 INFO L231 Difference]: Finished difference. Result has 216 places, 331 transitions, 6438 flow [2025-03-08 17:39:20,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6438, PETRI_PLACES=216, PETRI_TRANSITIONS=331} [2025-03-08 17:39:20,471 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 196 predicate places. [2025-03-08 17:39:20,471 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 331 transitions, 6438 flow [2025-03-08 17:39:20,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-03-08 17:39:20,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:20,472 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:20,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:20,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:20,672 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:20,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash -110303554, now seen corresponding path program 15 times [2025-03-08 17:39:20,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:20,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228510902] [2025-03-08 17:39:20,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:20,675 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-03-08 17:39:20,678 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 18 statements. [2025-03-08 17:39:20,678 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:20,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 17:39:20,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228510902] [2025-03-08 17:39:20,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228510902] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563932660] [2025-03-08 17:39:20,720 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:20,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:20,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:20,722 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:20,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-08 17:39:20,746 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-03-08 17:39:20,753 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 18 statements. [2025-03-08 17:39:20,754 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:20,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:20,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:39:20,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 17:39:20,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:39:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563932660] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:20,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:39:20,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-08 17:39:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011369884] [2025-03-08 17:39:20,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:20,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:39:20,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:20,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:39:20,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:39:20,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:20,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 331 transitions, 6438 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2025-03-08 17:39:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:20,954 INFO L124 PetriNetUnfolderBase]: 555/1047 cut-off events. [2025-03-08 17:39:20,954 INFO L125 PetriNetUnfolderBase]: For 14157/14157 co-relation queries the response was YES. [2025-03-08 17:39:20,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9191 conditions, 1047 events. 555/1047 cut-off events. For 14157/14157 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5438 event pairs, 5 based on Foata normal form. 9/1055 useless extension candidates. Maximal degree in co-relation 9061. Up to 732 conditions per place. [2025-03-08 17:39:20,963 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 270 selfloop transitions, 13 changer transitions 55/341 dead transitions. [2025-03-08 17:39:20,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 341 transitions, 7166 flow [2025-03-08 17:39:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:39:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:39:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2025-03-08 17:39:20,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-08 17:39:20,965 INFO L175 Difference]: Start difference. First operand has 216 places, 331 transitions, 6438 flow. Second operand 6 states and 60 transitions. [2025-03-08 17:39:20,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 341 transitions, 7166 flow [2025-03-08 17:39:21,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 341 transitions, 6734 flow, removed 74 selfloop flow, removed 16 redundant places. [2025-03-08 17:39:21,052 INFO L231 Difference]: Finished difference. Result has 201 places, 280 transitions, 5081 flow [2025-03-08 17:39:21,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5975, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5081, PETRI_PLACES=201, PETRI_TRANSITIONS=280} [2025-03-08 17:39:21,052 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 181 predicate places. [2025-03-08 17:39:21,052 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 280 transitions, 5081 flow [2025-03-08 17:39:21,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2025-03-08 17:39:21,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:21,052 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:21,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-08 17:39:21,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:21,253 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:21,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash 455821888, now seen corresponding path program 16 times [2025-03-08 17:39:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:21,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575714857] [2025-03-08 17:39:21,253 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:21,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:21,255 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:21,257 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:21,257 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:21,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:21,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575714857] [2025-03-08 17:39:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575714857] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:21,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761756940] [2025-03-08 17:39:21,301 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:21,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:21,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:21,303 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:21,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-08 17:39:21,325 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:21,333 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:21,333 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:21,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:21,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:39:21,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761756940] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:21,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:21,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-08 17:39:21,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355352794] [2025-03-08 17:39:21,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:21,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 17:39:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:21,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 17:39:21,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:39:21,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:21,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 280 transitions, 5081 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2025-03-08 17:39:21,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:21,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:21,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:21,613 INFO L124 PetriNetUnfolderBase]: 444/817 cut-off events. [2025-03-08 17:39:21,614 INFO L125 PetriNetUnfolderBase]: For 8069/8069 co-relation queries the response was YES. [2025-03-08 17:39:21,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6974 conditions, 817 events. 444/817 cut-off events. For 8069/8069 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3759 event pairs, 0 based on Foata normal form. 4/820 useless extension candidates. Maximal degree in co-relation 6909. Up to 480 conditions per place. [2025-03-08 17:39:21,621 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 198 selfloop transitions, 85 changer transitions 12/298 dead transitions. [2025-03-08 17:39:21,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 298 transitions, 5764 flow [2025-03-08 17:39:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 17:39:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-08 17:39:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2025-03-08 17:39:21,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2025-03-08 17:39:21,623 INFO L175 Difference]: Start difference. First operand has 201 places, 280 transitions, 5081 flow. Second operand 11 states and 100 transitions. [2025-03-08 17:39:21,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 298 transitions, 5764 flow [2025-03-08 17:39:21,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 298 transitions, 5250 flow, removed 66 selfloop flow, removed 20 redundant places. [2025-03-08 17:39:21,678 INFO L231 Difference]: Finished difference. Result has 180 places, 268 transitions, 4595 flow [2025-03-08 17:39:21,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4570, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4595, PETRI_PLACES=180, PETRI_TRANSITIONS=268} [2025-03-08 17:39:21,679 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 160 predicate places. [2025-03-08 17:39:21,679 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 268 transitions, 4595 flow [2025-03-08 17:39:21,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2025-03-08 17:39:21,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:21,679 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:21,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:21,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:21,880 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:21,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash 554943334, now seen corresponding path program 17 times [2025-03-08 17:39:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:21,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656957187] [2025-03-08 17:39:21,881 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:21,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:21,883 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-03-08 17:39:21,885 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:21,885 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-08 17:39:21,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 17:39:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:21,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656957187] [2025-03-08 17:39:21,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656957187] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219223281] [2025-03-08 17:39:21,918 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:21,920 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:21,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-08 17:39:21,941 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-03-08 17:39:21,949 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:21,949 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-08 17:39:21,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:21,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:39:21,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 17:39:21,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:39:21,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219223281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:21,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:39:21,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-08 17:39:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100253117] [2025-03-08 17:39:21,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:21,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:39:21,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:21,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:39:21,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:39:21,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-03-08 17:39:21,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 268 transitions, 4595 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2025-03-08 17:39:21,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:21,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-03-08 17:39:21,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:22,061 INFO L124 PetriNetUnfolderBase]: 427/762 cut-off events. [2025-03-08 17:39:22,061 INFO L125 PetriNetUnfolderBase]: For 4915/4915 co-relation queries the response was YES. [2025-03-08 17:39:22,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6227 conditions, 762 events. 427/762 cut-off events. For 4915/4915 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3317 event pairs, 9 based on Foata normal form. 7/768 useless extension candidates. Maximal degree in co-relation 6173. Up to 437 conditions per place. [2025-03-08 17:39:22,064 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 274/274 dead transitions. [2025-03-08 17:39:22,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 274 transitions, 5196 flow [2025-03-08 17:39:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:39:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:39:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 52 transitions. [2025-03-08 17:39:22,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-03-08 17:39:22,065 INFO L175 Difference]: Start difference. First operand has 180 places, 268 transitions, 4595 flow. Second operand 6 states and 52 transitions. [2025-03-08 17:39:22,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 274 transitions, 5196 flow [2025-03-08 17:39:22,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 274 transitions, 4956 flow, removed 8 selfloop flow, removed 10 redundant places. [2025-03-08 17:39:22,095 INFO L231 Difference]: Finished difference. Result has 172 places, 0 transitions, 0 flow [2025-03-08 17:39:22,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4341, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=172, PETRI_TRANSITIONS=0} [2025-03-08 17:39:22,096 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 152 predicate places. [2025-03-08 17:39:22,096 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 0 transitions, 0 flow [2025-03-08 17:39:22,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2025-03-08 17:39:22,098 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-08 17:39:22,098 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-08 17:39:22,098 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-08 17:39:22,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-08 17:39:22,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:22,299 INFO L422 BasicCegarLoop]: Path program histogram: [17, 2, 2, 1] [2025-03-08 17:39:22,301 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:39:22,301 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:39:22,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:39:22 BasicIcfg [2025-03-08 17:39:22,305 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:39:22,305 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:39:22,305 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:39:22,305 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:39:22,306 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:39:09" (3/4) ... [2025-03-08 17:39:22,307 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 17:39:22,309 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-08 17:39:22,309 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-08 17:39:22,311 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-03-08 17:39:22,311 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-08 17:39:22,311 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-08 17:39:22,312 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 17:39:22,362 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:39:22,363 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:39:22,363 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:39:22,364 INFO L158 Benchmark]: Toolchain (without parser) took 12886.67ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 135.0MB in the beginning and 78.6MB in the end (delta: 56.5MB). Peak memory consumption was 137.9MB. Max. memory is 16.1GB. [2025-03-08 17:39:22,364 INFO L158 Benchmark]: CDTParser took 0.83ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:39:22,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.92ms. Allocated memory is still 167.8MB. Free memory was 134.6MB in the beginning and 123.4MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:39:22,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.82ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 122.4MB in the end (delta: 967.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:39:22,366 INFO L158 Benchmark]: Boogie Preprocessor took 30.76ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 121.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:39:22,366 INFO L158 Benchmark]: IcfgBuilder took 278.08ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 101.7MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 17:39:22,366 INFO L158 Benchmark]: TraceAbstraction took 12328.48ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 100.9MB in the beginning and 84.2MB in the end (delta: 16.7MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. [2025-03-08 17:39:22,366 INFO L158 Benchmark]: Witness Printer took 57.98ms. Allocated memory is still 251.7MB. Free memory was 84.2MB in the beginning and 78.6MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:39:22,367 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.92ms. Allocated memory is still 167.8MB. Free memory was 134.6MB in the beginning and 123.4MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.82ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 122.4MB in the end (delta: 967.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.76ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 121.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 278.08ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 101.7MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 12328.48ms. Allocated memory was 167.8MB in the beginning and 251.7MB in the end (delta: 83.9MB). Free memory was 100.9MB in the beginning and 84.2MB in the end (delta: 16.7MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. * Witness Printer took 57.98ms. Allocated memory is still 251.7MB. Free memory was 84.2MB in the beginning and 78.6MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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, 25 locations, 28 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: 12.3s, OverallIterations: 22, TraceHistogramMax: 3, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 814 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 814 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 277 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2696 IncrementalHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 277 mSolverCounterUnsat, 0 mSDtfsCounter, 2696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 761 GetRequests, 470 SyntacticMatches, 14 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6548occurred in iteration=18, InterpolantAutomatonStates: 221, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 673 NumberOfCodeBlocks, 671 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 894 ConstructedInterpolants, 0 QuantifiedInterpolants, 3922 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1781 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 58 InterpolantComputations, 7 PerfectInterpolantSequences, 145/263 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! [2025-03-08 17:39:22,380 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE