./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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-easy11.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 dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:52:20,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:52:20,280 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:52:20,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:52:20,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:52:20,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:52:20,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:52:20,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:52:20,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:52:20,311 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:52:20,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:52:20,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:52:20,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:52:20,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:52:20,312 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:52:20,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:52:20,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:52:20,312 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:52:20,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:52:20,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:52:20,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:52:20,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:52:20,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:52:20,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:52:20,313 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:52:20,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:52:20,313 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:52:20,313 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:52:20,313 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:52:20,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:52:20,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:52:20,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:52:20,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:52:20,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:52:20,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:52:20,314 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:52:20,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:52:20,315 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:52:20,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:52:20,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:52:20,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:52:20,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:52:20,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:52:20,315 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 -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2025-03-13 21:52:20,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:52:20,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:52:20,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:52:20,592 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:52:20,593 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:52:20,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-03-13 21:52:21,772 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68f2217f/cc2769e696aa4cd5b8a565b98d1f1d17/FLAG1f0c25f16 [2025-03-13 21:52:21,986 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:52:21,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-03-13 21:52:21,994 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68f2217f/cc2769e696aa4cd5b8a565b98d1f1d17/FLAG1f0c25f16 [2025-03-13 21:52:22,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68f2217f/cc2769e696aa4cd5b8a565b98d1f1d17 [2025-03-13 21:52:22,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:52:22,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:52:22,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:52:22,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:52:22,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:52:22,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6334db7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22, skipping insertion in model container [2025-03-13 21:52:22,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:52:22,473 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-easy11.wvr.c[1841,1854] [2025-03-13 21:52:22,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:52:22,481 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:52:22,490 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-easy11.wvr.c[1841,1854] [2025-03-13 21:52:22,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:52:22,503 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:52:22,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22 WrapperNode [2025-03-13 21:52:22,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:52:22,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:52:22,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:52:22,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:52:22,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,523 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2025-03-13 21:52:22,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:52:22,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:52:22,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:52:22,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:52:22,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,541 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]. [2025-03-13 21:52:22,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,543 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:52:22,546 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:52:22,546 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:52:22,546 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:52:22,547 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (1/1) ... [2025-03-13 21:52:22,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:52:22,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:22,575 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) [2025-03-13 21:52:22,580 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 [2025-03-13 21:52:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:52:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-13 21:52:22,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-13 21:52:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-13 21:52:22,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-13 21:52:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:52:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:52:22,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:52:22,597 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:52:22,653 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:52:22,655 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:52:22,766 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:52:22,767 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:52:22,767 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:52:22,843 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:52:22,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:52:22 BoogieIcfgContainer [2025-03-13 21:52:22,844 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:52:22,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:52:22,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:52:22,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:52:22,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:52:22" (1/3) ... [2025-03-13 21:52:22,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618dbdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:52:22, skipping insertion in model container [2025-03-13 21:52:22,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:52:22" (2/3) ... [2025-03-13 21:52:22,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618dbdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:52:22, skipping insertion in model container [2025-03-13 21:52:22,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:52:22" (3/3) ... [2025-03-13 21:52:22,855 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2025-03-13 21:52:22,866 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:52:22,867 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy11.wvr.c that has 3 procedures, 21 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-13 21:52:22,868 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:52:22,893 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-13 21:52:22,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2025-03-13 21:52:22,946 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2025-03-13 21:52:22,950 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-13 21:52:22,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-03-13 21:52:22,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2025-03-13 21:52:22,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2025-03-13 21:52:22,960 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:52:22,969 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;@e297fb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:52:22,970 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-13 21:52:22,978 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:52:22,978 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-03-13 21:52:22,978 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-13 21:52:22,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:22,979 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:22,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:22,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash -317440562, now seen corresponding path program 1 times [2025-03-13 21:52:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:22,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531121395] [2025-03-13 21:52:22,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:52:22,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:23,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:23,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:23,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:23,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:23,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531121395] [2025-03-13 21:52:23,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531121395] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:23,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:23,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:23,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770358030] [2025-03-13 21:52:23,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:23,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:23,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:23,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:23,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:23,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:23,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:23,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:23,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:23,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:23,769 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2025-03-13 21:52:23,769 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-03-13 21:52:23,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 201 events. 111/201 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 609 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 364. Up to 57 conditions per place. [2025-03-13 21:52:23,772 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2025-03-13 21:52:23,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2025-03-13 21:52:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-13 21:52:23,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-13 21:52:23,784 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2025-03-13 21:52:23,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2025-03-13 21:52:23,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-13 21:52:23,793 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2025-03-13 21:52:23,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2025-03-13 21:52:23,800 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2025-03-13 21:52:23,800 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2025-03-13 21:52:23,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:23,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:23,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:23,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:52:23,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:23,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash 541205236, now seen corresponding path program 2 times [2025-03-13 21:52:23,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:23,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342433424] [2025-03-13 21:52:23,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:23,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:23,812 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:23,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:23,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:52:23,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342433424] [2025-03-13 21:52:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342433424] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413686036] [2025-03-13 21:52:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:23,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:23,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:23,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:23,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:23,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:23,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:23,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:23,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:24,195 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2025-03-13 21:52:24,195 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2025-03-13 21:52:24,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 208 events. 114/208 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 610 event pairs, 14 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 575. Up to 115 conditions per place. [2025-03-13 21:52:24,197 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2025-03-13 21:52:24,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2025-03-13 21:52:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-03-13 21:52:24,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2025-03-13 21:52:24,200 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2025-03-13 21:52:24,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2025-03-13 21:52:24,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-13 21:52:24,202 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2025-03-13 21:52:24,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2025-03-13 21:52:24,203 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2025-03-13 21:52:24,203 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2025-03-13 21:52:24,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:24,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:24,203 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:24,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:52:24,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:24,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash -699367322, now seen corresponding path program 3 times [2025-03-13 21:52:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135763832] [2025-03-13 21:52:24,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:24,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:24,215 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:24,222 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:24,222 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:52:24,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:24,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135763832] [2025-03-13 21:52:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135763832] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:24,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:24,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237768455] [2025-03-13 21:52:24,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:24,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:24,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:24,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:24,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:24,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:24,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:24,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:24,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:24,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:24,610 INFO L124 PetriNetUnfolderBase]: 119/216 cut-off events. [2025-03-13 21:52:24,610 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2025-03-13 21:52:24,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 216 events. 119/216 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 661 event pairs, 11 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 688. Up to 119 conditions per place. [2025-03-13 21:52:24,612 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 9/67 dead transitions. [2025-03-13 21:52:24,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 450 flow [2025-03-13 21:52:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-13 21:52:24,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-13 21:52:24,614 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 86 transitions. [2025-03-13 21:52:24,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 450 flow [2025-03-13 21:52:24,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 418 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-13 21:52:24,618 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 257 flow [2025-03-13 21:52:24,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2025-03-13 21:52:24,619 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2025-03-13 21:52:24,619 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 257 flow [2025-03-13 21:52:24,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:24,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:24,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:24,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:52:24,619 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:24,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1553897768, now seen corresponding path program 4 times [2025-03-13 21:52:24,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:24,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344378961] [2025-03-13 21:52:24,621 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:24,629 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-13 21:52:24,640 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:24,642 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:24,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:24,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344378961] [2025-03-13 21:52:24,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344378961] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:24,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:24,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:24,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487705083] [2025-03-13 21:52:24,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:24,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:24,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:24,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:24,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:24,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:24,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 257 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:24,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:24,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:24,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:25,043 INFO L124 PetriNetUnfolderBase]: 194/329 cut-off events. [2025-03-13 21:52:25,043 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2025-03-13 21:52:25,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 329 events. 194/329 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1081 event pairs, 35 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 1203. Up to 140 conditions per place. [2025-03-13 21:52:25,051 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 37 changer transitions 8/90 dead transitions. [2025-03-13 21:52:25,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 737 flow [2025-03-13 21:52:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:52:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:52:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-03-13 21:52:25,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-03-13 21:52:25,052 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 257 flow. Second operand 8 states and 90 transitions. [2025-03-13 21:52:25,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 737 flow [2025-03-13 21:52:25,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 90 transitions, 661 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-03-13 21:52:25,058 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 518 flow [2025-03-13 21:52:25,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=518, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2025-03-13 21:52:25,059 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2025-03-13 21:52:25,059 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 518 flow [2025-03-13 21:52:25,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:25,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:25,059 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:25,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:52:25,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:25,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash 31400426, now seen corresponding path program 5 times [2025-03-13 21:52:25,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:25,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005311306] [2025-03-13 21:52:25,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:25,065 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:25,069 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:25,069 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:52:25,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:25,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:25,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005311306] [2025-03-13 21:52:25,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005311306] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:25,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:25,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061211408] [2025-03-13 21:52:25,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:25,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:25,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:25,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:25,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:25,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:25,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 518 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:25,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:25,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:25,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:25,432 INFO L124 PetriNetUnfolderBase]: 207/357 cut-off events. [2025-03-13 21:52:25,433 INFO L125 PetriNetUnfolderBase]: For 817/817 co-relation queries the response was YES. [2025-03-13 21:52:25,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 357 events. 207/357 cut-off events. For 817/817 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1302 event pairs, 16 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1442. Up to 185 conditions per place. [2025-03-13 21:52:25,437 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 53 selfloop transitions, 33 changer transitions 10/97 dead transitions. [2025-03-13 21:52:25,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 859 flow [2025-03-13 21:52:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2025-03-13 21:52:25,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2025-03-13 21:52:25,438 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 518 flow. Second operand 9 states and 90 transitions. [2025-03-13 21:52:25,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 859 flow [2025-03-13 21:52:25,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 839 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-03-13 21:52:25,445 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 591 flow [2025-03-13 21:52:25,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=591, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2025-03-13 21:52:25,446 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 38 predicate places. [2025-03-13 21:52:25,446 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 591 flow [2025-03-13 21:52:25,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:25,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:25,446 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:25,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:52:25,446 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:25,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash 513661970, now seen corresponding path program 6 times [2025-03-13 21:52:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:25,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445156549] [2025-03-13 21:52:25,447 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:25,452 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:25,455 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:25,455 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-13 21:52:25,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:25,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:25,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445156549] [2025-03-13 21:52:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445156549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:25,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875870374] [2025-03-13 21:52:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:25,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:25,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:25,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:25,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:25,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 591 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:25,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:25,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:25,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:25,753 INFO L124 PetriNetUnfolderBase]: 225/385 cut-off events. [2025-03-13 21:52:25,754 INFO L125 PetriNetUnfolderBase]: For 1166/1166 co-relation queries the response was YES. [2025-03-13 21:52:25,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 385 events. 225/385 cut-off events. For 1166/1166 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1404 event pairs, 20 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 1737. Up to 209 conditions per place. [2025-03-13 21:52:25,757 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 51 selfloop transitions, 39 changer transitions 10/101 dead transitions. [2025-03-13 21:52:25,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 1023 flow [2025-03-13 21:52:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2025-03-13 21:52:25,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-03-13 21:52:25,758 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 591 flow. Second operand 9 states and 87 transitions. [2025-03-13 21:52:25,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 1023 flow [2025-03-13 21:52:25,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 101 transitions, 933 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-03-13 21:52:25,764 INFO L231 Difference]: Finished difference. Result has 66 places, 77 transitions, 765 flow [2025-03-13 21:52:25,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=765, PETRI_PLACES=66, PETRI_TRANSITIONS=77} [2025-03-13 21:52:25,765 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 42 predicate places. [2025-03-13 21:52:25,765 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 77 transitions, 765 flow [2025-03-13 21:52:25,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:25,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:25,765 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:25,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:52:25,766 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:25,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:25,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1139291404, now seen corresponding path program 7 times [2025-03-13 21:52:25,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278671900] [2025-03-13 21:52:25,766 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:25,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:25,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:25,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:25,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:25,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278671900] [2025-03-13 21:52:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278671900] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:25,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042686010] [2025-03-13 21:52:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:25,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:25,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:25,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:25,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:25,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 77 transitions, 765 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:25,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:25,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:25,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:26,088 INFO L124 PetriNetUnfolderBase]: 218/373 cut-off events. [2025-03-13 21:52:26,088 INFO L125 PetriNetUnfolderBase]: For 1416/1416 co-relation queries the response was YES. [2025-03-13 21:52:26,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 373 events. 218/373 cut-off events. For 1416/1416 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1375 event pairs, 15 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1803. Up to 197 conditions per place. [2025-03-13 21:52:26,092 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 56 selfloop transitions, 36 changer transitions 12/105 dead transitions. [2025-03-13 21:52:26,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 105 transitions, 1124 flow [2025-03-13 21:52:26,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-13 21:52:26,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-13 21:52:26,094 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 765 flow. Second operand 9 states and 86 transitions. [2025-03-13 21:52:26,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 105 transitions, 1124 flow [2025-03-13 21:52:26,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 1063 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-03-13 21:52:26,102 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 752 flow [2025-03-13 21:52:26,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=752, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2025-03-13 21:52:26,103 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2025-03-13 21:52:26,103 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 752 flow [2025-03-13 21:52:26,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:26,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:26,104 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:26,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 21:52:26,104 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:26,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash 968494814, now seen corresponding path program 8 times [2025-03-13 21:52:26,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:26,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165510131] [2025-03-13 21:52:26,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:26,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:26,110 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:26,112 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:26,112 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:52:26,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:26,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:26,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165510131] [2025-03-13 21:52:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165510131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:26,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:26,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:26,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227892714] [2025-03-13 21:52:26,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:26,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:26,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:26,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:26,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:26,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:26,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 752 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:26,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:26,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:26,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:26,400 INFO L124 PetriNetUnfolderBase]: 214/366 cut-off events. [2025-03-13 21:52:26,400 INFO L125 PetriNetUnfolderBase]: For 1463/1463 co-relation queries the response was YES. [2025-03-13 21:52:26,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 366 events. 214/366 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1323 event pairs, 17 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1775. Up to 195 conditions per place. [2025-03-13 21:52:26,403 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 50 selfloop transitions, 38 changer transitions 9/98 dead transitions. [2025-03-13 21:52:26,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 98 transitions, 1071 flow [2025-03-13 21:52:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2025-03-13 21:52:26,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-03-13 21:52:26,405 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 752 flow. Second operand 9 states and 87 transitions. [2025-03-13 21:52:26,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 98 transitions, 1071 flow [2025-03-13 21:52:26,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 991 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-13 21:52:26,410 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 798 flow [2025-03-13 21:52:26,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=798, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2025-03-13 21:52:26,411 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2025-03-13 21:52:26,411 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 798 flow [2025-03-13 21:52:26,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:26,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:26,412 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:26,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 21:52:26,412 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:26,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash 433265012, now seen corresponding path program 9 times [2025-03-13 21:52:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:26,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447252844] [2025-03-13 21:52:26,412 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:26,415 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:26,417 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:26,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:52:26,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:26,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447252844] [2025-03-13 21:52:26,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447252844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:26,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:26,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548895087] [2025-03-13 21:52:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:26,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:26,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:26,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:26,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:26,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:26,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 798 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:26,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:26,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:26,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:26,696 INFO L124 PetriNetUnfolderBase]: 212/364 cut-off events. [2025-03-13 21:52:26,696 INFO L125 PetriNetUnfolderBase]: For 1559/1559 co-relation queries the response was YES. [2025-03-13 21:52:26,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1816 conditions, 364 events. 212/364 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1322 event pairs, 19 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1787. Up to 193 conditions per place. [2025-03-13 21:52:26,698 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 49 selfloop transitions, 36 changer transitions 11/97 dead transitions. [2025-03-13 21:52:26,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 1079 flow [2025-03-13 21:52:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2025-03-13 21:52:26,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2025-03-13 21:52:26,699 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 798 flow. Second operand 9 states and 85 transitions. [2025-03-13 21:52:26,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 1079 flow [2025-03-13 21:52:26,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 1005 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-13 21:52:26,706 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 775 flow [2025-03-13 21:52:26,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2025-03-13 21:52:26,707 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2025-03-13 21:52:26,707 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 775 flow [2025-03-13 21:52:26,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:26,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:26,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:26,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-13 21:52:26,707 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:26,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash -396266158, now seen corresponding path program 10 times [2025-03-13 21:52:26,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:26,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080316320] [2025-03-13 21:52:26,709 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:26,714 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-13 21:52:26,717 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:26,717 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:26,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080316320] [2025-03-13 21:52:26,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080316320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:26,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:26,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219444671] [2025-03-13 21:52:26,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:26,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:26,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:26,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:26,818 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:26,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 775 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:26,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:26,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:26,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:27,018 INFO L124 PetriNetUnfolderBase]: 285/475 cut-off events. [2025-03-13 21:52:27,019 INFO L125 PetriNetUnfolderBase]: For 2283/2283 co-relation queries the response was YES. [2025-03-13 21:52:27,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2463 conditions, 475 events. 285/475 cut-off events. For 2283/2283 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1793 event pairs, 42 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 2434. Up to 216 conditions per place. [2025-03-13 21:52:27,023 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 61 selfloop transitions, 52 changer transitions 9/123 dead transitions. [2025-03-13 21:52:27,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 123 transitions, 1448 flow [2025-03-13 21:52:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2025-03-13 21:52:27,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2025-03-13 21:52:27,024 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 775 flow. Second operand 9 states and 96 transitions. [2025-03-13 21:52:27,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 123 transitions, 1448 flow [2025-03-13 21:52:27,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 123 transitions, 1334 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-03-13 21:52:27,032 INFO L231 Difference]: Finished difference. Result has 77 places, 95 transitions, 1139 flow [2025-03-13 21:52:27,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1139, PETRI_PLACES=77, PETRI_TRANSITIONS=95} [2025-03-13 21:52:27,034 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2025-03-13 21:52:27,034 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 95 transitions, 1139 flow [2025-03-13 21:52:27,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:27,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:27,034 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:27,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-13 21:52:27,035 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:27,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash -9879194, now seen corresponding path program 11 times [2025-03-13 21:52:27,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:27,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976945580] [2025-03-13 21:52:27,035 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:27,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:27,040 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:27,042 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:27,043 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:52:27,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976945580] [2025-03-13 21:52:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976945580] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:27,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881843378] [2025-03-13 21:52:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:27,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:27,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:27,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:27,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:27,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 95 transitions, 1139 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:27,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:27,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:27,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:27,336 INFO L124 PetriNetUnfolderBase]: 287/483 cut-off events. [2025-03-13 21:52:27,337 INFO L125 PetriNetUnfolderBase]: For 2524/2524 co-relation queries the response was YES. [2025-03-13 21:52:27,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 483 events. 287/483 cut-off events. For 2524/2524 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1859 event pairs, 29 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 2614. Up to 242 conditions per place. [2025-03-13 21:52:27,340 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 53 selfloop transitions, 50 changer transitions 14/118 dead transitions. [2025-03-13 21:52:27,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 1476 flow [2025-03-13 21:52:27,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-13 21:52:27,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-13 21:52:27,341 INFO L175 Difference]: Start difference. First operand has 77 places, 95 transitions, 1139 flow. Second operand 9 states and 86 transitions. [2025-03-13 21:52:27,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 1476 flow [2025-03-13 21:52:27,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 1416 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-03-13 21:52:27,349 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 1142 flow [2025-03-13 21:52:27,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1142, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2025-03-13 21:52:27,350 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2025-03-13 21:52:27,350 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 1142 flow [2025-03-13 21:52:27,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:27,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:27,350 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:27,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-13 21:52:27,351 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:27,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1399138266, now seen corresponding path program 12 times [2025-03-13 21:52:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:27,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942933621] [2025-03-13 21:52:27,351 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:27,354 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:27,356 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:27,356 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-13 21:52:27,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:27,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942933621] [2025-03-13 21:52:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942933621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:27,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:27,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919660440] [2025-03-13 21:52:27,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:27,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:27,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:27,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:27,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:27,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 1142 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:27,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:27,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:27,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:27,634 INFO L124 PetriNetUnfolderBase]: 301/503 cut-off events. [2025-03-13 21:52:27,634 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2025-03-13 21:52:27,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 503 events. 301/503 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1928 event pairs, 26 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 2667. Up to 248 conditions per place. [2025-03-13 21:52:27,637 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 56 selfloop transitions, 51 changer transitions 11/119 dead transitions. [2025-03-13 21:52:27,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1503 flow [2025-03-13 21:52:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-13 21:52:27,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-13 21:52:27,638 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 1142 flow. Second operand 9 states and 88 transitions. [2025-03-13 21:52:27,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1503 flow [2025-03-13 21:52:27,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 1385 flow, removed 9 selfloop flow, removed 7 redundant places. [2025-03-13 21:52:27,645 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 1153 flow [2025-03-13 21:52:27,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1153, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2025-03-13 21:52:27,646 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2025-03-13 21:52:27,646 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 1153 flow [2025-03-13 21:52:27,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:27,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:27,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:27,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-13 21:52:27,646 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:27,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:27,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1473500810, now seen corresponding path program 13 times [2025-03-13 21:52:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:27,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018062403] [2025-03-13 21:52:27,646 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:27,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:27,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:27,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:27,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:27,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018062403] [2025-03-13 21:52:27,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018062403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:27,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:27,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:27,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315210390] [2025-03-13 21:52:27,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:27,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:27,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:27,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:27,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:27,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:27,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 1153 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:27,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:27,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:27,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:27,941 INFO L124 PetriNetUnfolderBase]: 313/525 cut-off events. [2025-03-13 21:52:27,941 INFO L125 PetriNetUnfolderBase]: For 3341/3341 co-relation queries the response was YES. [2025-03-13 21:52:27,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2919 conditions, 525 events. 313/525 cut-off events. For 3341/3341 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2009 event pairs, 39 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 2885. Up to 272 conditions per place. [2025-03-13 21:52:27,946 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 59 selfloop transitions, 56 changer transitions 11/127 dead transitions. [2025-03-13 21:52:27,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 1713 flow [2025-03-13 21:52:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2025-03-13 21:52:27,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2025-03-13 21:52:27,948 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 1153 flow. Second operand 9 states and 85 transitions. [2025-03-13 21:52:27,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 1713 flow [2025-03-13 21:52:27,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 127 transitions, 1584 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-03-13 21:52:27,958 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 1386 flow [2025-03-13 21:52:27,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1386, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2025-03-13 21:52:27,959 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 62 predicate places. [2025-03-13 21:52:27,959 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 1386 flow [2025-03-13 21:52:27,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:27,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:27,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:27,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-13 21:52:27,960 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:27,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash -368722892, now seen corresponding path program 14 times [2025-03-13 21:52:27,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:27,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358427652] [2025-03-13 21:52:27,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:27,965 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:27,968 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:27,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:52:27,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:28,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:28,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358427652] [2025-03-13 21:52:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358427652] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:28,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394484507] [2025-03-13 21:52:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:28,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:28,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:28,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:28,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:28,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 1386 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:28,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:28,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:28,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:28,228 INFO L124 PetriNetUnfolderBase]: 321/541 cut-off events. [2025-03-13 21:52:28,229 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2025-03-13 21:52:28,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 541 events. 321/541 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2116 event pairs, 39 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 3067. Up to 276 conditions per place. [2025-03-13 21:52:28,233 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 69 selfloop transitions, 52 changer transitions 9/131 dead transitions. [2025-03-13 21:52:28,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1836 flow [2025-03-13 21:52:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2025-03-13 21:52:28,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-03-13 21:52:28,234 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 1386 flow. Second operand 9 states and 84 transitions. [2025-03-13 21:52:28,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1836 flow [2025-03-13 21:52:28,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 1745 flow, removed 24 selfloop flow, removed 4 redundant places. [2025-03-13 21:52:28,244 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 1449 flow [2025-03-13 21:52:28,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1449, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2025-03-13 21:52:28,244 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2025-03-13 21:52:28,244 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 1449 flow [2025-03-13 21:52:28,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:28,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:28,245 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:28,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-13 21:52:28,245 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:28,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:28,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2041258070, now seen corresponding path program 15 times [2025-03-13 21:52:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:28,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335049925] [2025-03-13 21:52:28,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:28,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:28,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:52:28,250 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:28,250 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:52:28,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335049925] [2025-03-13 21:52:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335049925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496917211] [2025-03-13 21:52:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:28,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:28,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:28,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:28,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:28,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 1449 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:28,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:28,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:28,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:28,557 INFO L124 PetriNetUnfolderBase]: 325/549 cut-off events. [2025-03-13 21:52:28,557 INFO L125 PetriNetUnfolderBase]: For 4058/4058 co-relation queries the response was YES. [2025-03-13 21:52:28,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3189 conditions, 549 events. 325/549 cut-off events. For 4058/4058 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2165 event pairs, 32 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3151. Up to 196 conditions per place. [2025-03-13 21:52:28,563 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 72 selfloop transitions, 51 changer transitions 9/133 dead transitions. [2025-03-13 21:52:28,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 133 transitions, 1902 flow [2025-03-13 21:52:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2025-03-13 21:52:28,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-03-13 21:52:28,564 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 1449 flow. Second operand 9 states and 81 transitions. [2025-03-13 21:52:28,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 133 transitions, 1902 flow [2025-03-13 21:52:28,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 133 transitions, 1785 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-03-13 21:52:28,578 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 1460 flow [2025-03-13 21:52:28,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1460, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2025-03-13 21:52:28,579 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2025-03-13 21:52:28,579 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 1460 flow [2025-03-13 21:52:28,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:28,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:28,580 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:28,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-13 21:52:28,580 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:28,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2008730612, now seen corresponding path program 16 times [2025-03-13 21:52:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:28,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771381451] [2025-03-13 21:52:28,581 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:28,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:28,584 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-13 21:52:28,587 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:52:28,587 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:28,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:28,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:28,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771381451] [2025-03-13 21:52:28,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771381451] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:28,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:28,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-13 21:52:28,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893864117] [2025-03-13 21:52:28,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:28,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:28,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:28,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:28,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:28,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 1460 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:28,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:28,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:28,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:28,943 INFO L124 PetriNetUnfolderBase]: 344/582 cut-off events. [2025-03-13 21:52:28,943 INFO L125 PetriNetUnfolderBase]: For 4342/4342 co-relation queries the response was YES. [2025-03-13 21:52:28,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3353 conditions, 582 events. 344/582 cut-off events. For 4342/4342 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2350 event pairs, 72 based on Foata normal form. 1/583 useless extension candidates. Maximal degree in co-relation 3315. Up to 277 conditions per place. [2025-03-13 21:52:28,949 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 65 selfloop transitions, 56 changer transitions 13/135 dead transitions. [2025-03-13 21:52:28,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 135 transitions, 1921 flow [2025-03-13 21:52:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:52:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:52:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-03-13 21:52:28,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-03-13 21:52:28,950 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 1460 flow. Second operand 8 states and 90 transitions. [2025-03-13 21:52:28,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 135 transitions, 1921 flow [2025-03-13 21:52:28,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 1778 flow, removed 11 selfloop flow, removed 7 redundant places. [2025-03-13 21:52:28,965 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 1417 flow [2025-03-13 21:52:28,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1417, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2025-03-13 21:52:28,966 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2025-03-13 21:52:28,966 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 1417 flow [2025-03-13 21:52:28,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-13 21:52:28,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:28,966 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:28,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-13 21:52:28,967 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:28,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1598782571, now seen corresponding path program 1 times [2025-03-13 21:52:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:28,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185132796] [2025-03-13 21:52:28,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:52:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:28,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 21:52:28,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:28,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:28,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:29,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185132796] [2025-03-13 21:52:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185132796] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811236409] [2025-03-13 21:52:29,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:52:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:29,026 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) [2025-03-13 21:52:29,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-13 21:52:29,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 21:52:29,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:29,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:29,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:29,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-13 21:52:29,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:29,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:29,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811236409] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:29,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-13 21:52:29,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-03-13 21:52:29,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850432689] [2025-03-13 21:52:29,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:29,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:29,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:29,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:29,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:52:29,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:29,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 1417 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:29,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:29,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:29,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:29,230 INFO L124 PetriNetUnfolderBase]: 383/661 cut-off events. [2025-03-13 21:52:29,230 INFO L125 PetriNetUnfolderBase]: For 4314/4314 co-relation queries the response was YES. [2025-03-13 21:52:29,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3582 conditions, 661 events. 383/661 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2872 event pairs, 45 based on Foata normal form. 11/672 useless extension candidates. Maximal degree in co-relation 3541. Up to 343 conditions per place. [2025-03-13 21:52:29,235 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 107 selfloop transitions, 31 changer transitions 0/139 dead transitions. [2025-03-13 21:52:29,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 139 transitions, 1920 flow [2025-03-13 21:52:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:52:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:52:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2025-03-13 21:52:29,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-13 21:52:29,236 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 1417 flow. Second operand 5 states and 64 transitions. [2025-03-13 21:52:29,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 139 transitions, 1920 flow [2025-03-13 21:52:29,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 1782 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-03-13 21:52:29,250 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 1431 flow [2025-03-13 21:52:29,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1431, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2025-03-13 21:52:29,251 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2025-03-13 21:52:29,251 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 1431 flow [2025-03-13 21:52:29,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:29,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:29,252 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:29,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-13 21:52:29,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-13 21:52:29,456 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:29,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:29,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1148940206, now seen corresponding path program 1 times [2025-03-13 21:52:29,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:29,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050467362] [2025-03-13 21:52:29,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:52:29,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:29,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 21:52:29,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:29,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:29,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:29,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050467362] [2025-03-13 21:52:29,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050467362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:29,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:29,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:52:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394754548] [2025-03-13 21:52:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:29,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:29,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:29,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:29,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:52:29,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:29,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 1431 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:29,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:29,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:29,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:29,603 INFO L124 PetriNetUnfolderBase]: 371/649 cut-off events. [2025-03-13 21:52:29,604 INFO L125 PetriNetUnfolderBase]: For 5403/5403 co-relation queries the response was YES. [2025-03-13 21:52:29,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 649 events. 371/649 cut-off events. For 5403/5403 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2857 event pairs, 52 based on Foata normal form. 12/661 useless extension candidates. Maximal degree in co-relation 3333. Up to 167 conditions per place. [2025-03-13 21:52:29,608 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 98 selfloop transitions, 37 changer transitions 6/142 dead transitions. [2025-03-13 21:52:29,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 1950 flow [2025-03-13 21:52:29,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:52:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:52:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2025-03-13 21:52:29,609 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-13 21:52:29,609 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 1431 flow. Second operand 7 states and 77 transitions. [2025-03-13 21:52:29,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 142 transitions, 1950 flow [2025-03-13 21:52:29,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 142 transitions, 1932 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-13 21:52:29,621 INFO L231 Difference]: Finished difference. Result has 97 places, 111 transitions, 1565 flow [2025-03-13 21:52:29,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1565, PETRI_PLACES=97, PETRI_TRANSITIONS=111} [2025-03-13 21:52:29,622 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 73 predicate places. [2025-03-13 21:52:29,622 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 111 transitions, 1565 flow [2025-03-13 21:52:29,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:29,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:29,622 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:29,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-13 21:52:29,622 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:29,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:29,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1183354852, now seen corresponding path program 2 times [2025-03-13 21:52:29,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:29,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293876998] [2025-03-13 21:52:29,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:29,626 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:29,628 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:29,628 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:29,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:29,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:29,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293876998] [2025-03-13 21:52:29,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293876998] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:29,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672299841] [2025-03-13 21:52:29,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:29,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:29,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:29,651 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) [2025-03-13 21:52:29,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-13 21:52:29,676 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:29,684 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:29,684 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:29,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:29,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-13 21:52:29,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:29,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:29,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672299841] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:29,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-13 21:52:29,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-13 21:52:29,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261513377] [2025-03-13 21:52:29,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:29,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:29,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:29,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:29,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:52:29,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:29,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 111 transitions, 1565 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:29,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:29,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:29,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:29,880 INFO L124 PetriNetUnfolderBase]: 444/787 cut-off events. [2025-03-13 21:52:29,880 INFO L125 PetriNetUnfolderBase]: For 7746/7746 co-relation queries the response was YES. [2025-03-13 21:52:29,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 787 events. 444/787 cut-off events. For 7746/7746 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3612 event pairs, 91 based on Foata normal form. 8/795 useless extension candidates. Maximal degree in co-relation 3877. Up to 306 conditions per place. [2025-03-13 21:52:29,885 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 128 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2025-03-13 21:52:29,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 2384 flow [2025-03-13 21:52:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:52:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:52:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-13 21:52:29,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2025-03-13 21:52:29,886 INFO L175 Difference]: Start difference. First operand has 97 places, 111 transitions, 1565 flow. Second operand 6 states and 86 transitions. [2025-03-13 21:52:29,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 2384 flow [2025-03-13 21:52:29,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 166 transitions, 2192 flow, removed 50 selfloop flow, removed 3 redundant places. [2025-03-13 21:52:29,906 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 1663 flow [2025-03-13 21:52:29,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1663, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2025-03-13 21:52:29,906 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2025-03-13 21:52:29,907 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 1663 flow [2025-03-13 21:52:29,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:29,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:29,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:29,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-13 21:52:30,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:30,108 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:30,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 173623545, now seen corresponding path program 2 times [2025-03-13 21:52:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:30,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925224308] [2025-03-13 21:52:30,108 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:30,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:30,111 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:30,113 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:30,115 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:30,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:30,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925224308] [2025-03-13 21:52:30,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925224308] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685153776] [2025-03-13 21:52:30,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:30,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:30,142 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) [2025-03-13 21:52:30,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-13 21:52:30,171 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:30,179 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:30,180 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:30,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:30,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-13 21:52:30,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:30,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685153776] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:30,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-13 21:52:30,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-13 21:52:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188017678] [2025-03-13 21:52:30,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:30,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:30,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:30,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:52:30,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:30,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 1663 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:30,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:30,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:30,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:30,350 INFO L124 PetriNetUnfolderBase]: 558/1011 cut-off events. [2025-03-13 21:52:30,351 INFO L125 PetriNetUnfolderBase]: For 8665/8665 co-relation queries the response was YES. [2025-03-13 21:52:30,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5627 conditions, 1011 events. 558/1011 cut-off events. For 8665/8665 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5059 event pairs, 52 based on Foata normal form. 9/1020 useless extension candidates. Maximal degree in co-relation 5503. Up to 508 conditions per place. [2025-03-13 21:52:30,358 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 126 selfloop transitions, 42 changer transitions 0/169 dead transitions. [2025-03-13 21:52:30,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 2494 flow [2025-03-13 21:52:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:52:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:52:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2025-03-13 21:52:30,359 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2025-03-13 21:52:30,359 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 1663 flow. Second operand 5 states and 68 transitions. [2025-03-13 21:52:30,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 2494 flow [2025-03-13 21:52:30,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 169 transitions, 2414 flow, removed 16 selfloop flow, removed 2 redundant places. [2025-03-13 21:52:30,401 INFO L231 Difference]: Finished difference. Result has 107 places, 129 transitions, 1909 flow [2025-03-13 21:52:30,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1909, PETRI_PLACES=107, PETRI_TRANSITIONS=129} [2025-03-13 21:52:30,401 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 83 predicate places. [2025-03-13 21:52:30,401 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 129 transitions, 1909 flow [2025-03-13 21:52:30,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:30,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:30,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:30,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-13 21:52:30,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:30,602 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:30,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 360629290, now seen corresponding path program 3 times [2025-03-13 21:52:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:30,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065915463] [2025-03-13 21:52:30,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:30,606 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:30,609 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:30,610 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:30,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:30,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:30,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065915463] [2025-03-13 21:52:30,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065915463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:30,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:30,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:52:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525884423] [2025-03-13 21:52:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:30,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:30,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:30,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:52:30,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:30,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 129 transitions, 1909 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:30,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:30,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:30,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:30,780 INFO L124 PetriNetUnfolderBase]: 504/916 cut-off events. [2025-03-13 21:52:30,780 INFO L125 PetriNetUnfolderBase]: For 9271/9271 co-relation queries the response was YES. [2025-03-13 21:52:30,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 916 events. 504/916 cut-off events. For 9271/9271 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4431 event pairs, 73 based on Foata normal form. 7/923 useless extension candidates. Maximal degree in co-relation 5289. Up to 226 conditions per place. [2025-03-13 21:52:30,786 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 129 selfloop transitions, 36 changer transitions 5/171 dead transitions. [2025-03-13 21:52:30,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 171 transitions, 2552 flow [2025-03-13 21:52:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:52:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:52:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2025-03-13 21:52:30,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5284090909090909 [2025-03-13 21:52:30,787 INFO L175 Difference]: Start difference. First operand has 107 places, 129 transitions, 1909 flow. Second operand 8 states and 93 transitions. [2025-03-13 21:52:30,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 171 transitions, 2552 flow [2025-03-13 21:52:30,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 171 transitions, 2510 flow, removed 17 selfloop flow, removed 2 redundant places. [2025-03-13 21:52:30,806 INFO L231 Difference]: Finished difference. Result has 112 places, 122 transitions, 1843 flow [2025-03-13 21:52:30,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1843, PETRI_PLACES=112, PETRI_TRANSITIONS=122} [2025-03-13 21:52:30,807 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 88 predicate places. [2025-03-13 21:52:30,807 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 122 transitions, 1843 flow [2025-03-13 21:52:30,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:30,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:30,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:30,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-13 21:52:30,807 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:30,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash 529713679, now seen corresponding path program 3 times [2025-03-13 21:52:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565036949] [2025-03-13 21:52:30,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:30,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:30,810 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:30,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:30,812 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:30,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565036949] [2025-03-13 21:52:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565036949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:30,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:52:30,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618413521] [2025-03-13 21:52:30,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:30,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:30,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:30,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:30,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:52:30,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:30,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 122 transitions, 1843 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:30,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:30,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:30,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:30,964 INFO L124 PetriNetUnfolderBase]: 465/840 cut-off events. [2025-03-13 21:52:30,964 INFO L125 PetriNetUnfolderBase]: For 8455/8455 co-relation queries the response was YES. [2025-03-13 21:52:30,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5095 conditions, 840 events. 465/840 cut-off events. For 8455/8455 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3959 event pairs, 40 based on Foata normal form. 6/846 useless extension candidates. Maximal degree in co-relation 4336. Up to 324 conditions per place. [2025-03-13 21:52:30,973 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 119 selfloop transitions, 32 changer transitions 2/154 dead transitions. [2025-03-13 21:52:30,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 154 transitions, 2466 flow [2025-03-13 21:52:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:52:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:52:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2025-03-13 21:52:30,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2025-03-13 21:52:30,975 INFO L175 Difference]: Start difference. First operand has 112 places, 122 transitions, 1843 flow. Second operand 6 states and 68 transitions. [2025-03-13 21:52:30,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 154 transitions, 2466 flow [2025-03-13 21:52:30,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 2382 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-03-13 21:52:30,994 INFO L231 Difference]: Finished difference. Result has 114 places, 119 transitions, 1790 flow [2025-03-13 21:52:30,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1790, PETRI_PLACES=114, PETRI_TRANSITIONS=119} [2025-03-13 21:52:30,994 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2025-03-13 21:52:30,994 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 119 transitions, 1790 flow [2025-03-13 21:52:30,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:30,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:30,995 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:30,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-13 21:52:30,995 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:30,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:30,996 INFO L85 PathProgramCache]: Analyzing trace with hash 97683250, now seen corresponding path program 4 times [2025-03-13 21:52:30,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:30,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489630977] [2025-03-13 21:52:30,996 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:30,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:30,999 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:31,003 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:31,003 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:31,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489630977] [2025-03-13 21:52:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489630977] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530078744] [2025-03-13 21:52:31,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:31,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:31,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:31,032 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) [2025-03-13 21:52:31,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-13 21:52:31,058 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:31,067 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:31,068 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:31,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:31,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-13 21:52:31,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:31,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530078744] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:31,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-13 21:52:31,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-13 21:52:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861489860] [2025-03-13 21:52:31,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:31,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:31,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:31,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:31,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:52:31,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:31,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 119 transitions, 1790 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:31,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:31,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:31,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:31,257 INFO L124 PetriNetUnfolderBase]: 515/936 cut-off events. [2025-03-13 21:52:31,257 INFO L125 PetriNetUnfolderBase]: For 10439/10439 co-relation queries the response was YES. [2025-03-13 21:52:31,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 936 events. 515/936 cut-off events. For 10439/10439 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4538 event pairs, 73 based on Foata normal form. 14/950 useless extension candidates. Maximal degree in co-relation 4520. Up to 503 conditions per place. [2025-03-13 21:52:31,262 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 103 selfloop transitions, 37 changer transitions 5/146 dead transitions. [2025-03-13 21:52:31,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 146 transitions, 2398 flow [2025-03-13 21:52:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:52:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:52:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2025-03-13 21:52:31,263 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-03-13 21:52:31,263 INFO L175 Difference]: Start difference. First operand has 114 places, 119 transitions, 1790 flow. Second operand 5 states and 60 transitions. [2025-03-13 21:52:31,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 146 transitions, 2398 flow [2025-03-13 21:52:31,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 146 transitions, 2325 flow, removed 27 selfloop flow, removed 3 redundant places. [2025-03-13 21:52:31,279 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 1851 flow [2025-03-13 21:52:31,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1851, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2025-03-13 21:52:31,279 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 91 predicate places. [2025-03-13 21:52:31,280 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 1851 flow [2025-03-13 21:52:31,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:31,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:31,280 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:31,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-13 21:52:31,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:31,480 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:31,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash -559664049, now seen corresponding path program 4 times [2025-03-13 21:52:31,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:31,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314098705] [2025-03-13 21:52:31,481 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:31,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:31,483 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:31,485 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:31,485 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:31,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:31,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:31,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314098705] [2025-03-13 21:52:31,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314098705] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:31,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150335526] [2025-03-13 21:52:31,507 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:31,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:31,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:31,508 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) [2025-03-13 21:52:31,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-13 21:52:31,533 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:31,542 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:31,542 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:31,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:31,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-13 21:52:31,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:31,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:31,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150335526] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:31,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-13 21:52:31,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2025-03-13 21:52:31,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281356896] [2025-03-13 21:52:31,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:31,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:31,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:31,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:31,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-13 21:52:31,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:31,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 1851 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:31,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:31,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:31,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:31,721 INFO L124 PetriNetUnfolderBase]: 474/861 cut-off events. [2025-03-13 21:52:31,722 INFO L125 PetriNetUnfolderBase]: For 9841/9841 co-relation queries the response was YES. [2025-03-13 21:52:31,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5181 conditions, 861 events. 474/861 cut-off events. For 9841/9841 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4110 event pairs, 110 based on Foata normal form. 9/870 useless extension candidates. Maximal degree in co-relation 4260. Up to 407 conditions per place. [2025-03-13 21:52:31,726 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 112 selfloop transitions, 46 changer transitions 2/161 dead transitions. [2025-03-13 21:52:31,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 161 transitions, 2585 flow [2025-03-13 21:52:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:52:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:52:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2025-03-13 21:52:31,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-13 21:52:31,728 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 1851 flow. Second operand 6 states and 82 transitions. [2025-03-13 21:52:31,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 161 transitions, 2585 flow [2025-03-13 21:52:31,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 161 transitions, 2521 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-03-13 21:52:31,743 INFO L231 Difference]: Finished difference. Result has 118 places, 119 transitions, 1995 flow [2025-03-13 21:52:31,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1995, PETRI_PLACES=118, PETRI_TRANSITIONS=119} [2025-03-13 21:52:31,743 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 94 predicate places. [2025-03-13 21:52:31,744 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 119 transitions, 1995 flow [2025-03-13 21:52:31,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:31,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:31,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:31,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-13 21:52:31,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-13 21:52:31,944 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:31,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:31,945 INFO L85 PathProgramCache]: Analyzing trace with hash -69009956, now seen corresponding path program 5 times [2025-03-13 21:52:31,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:31,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405890301] [2025-03-13 21:52:31,945 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:31,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:31,947 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:31,949 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:31,949 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:31,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:31,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405890301] [2025-03-13 21:52:31,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405890301] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176736401] [2025-03-13 21:52:31,966 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:31,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:31,968 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) [2025-03-13 21:52:31,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-13 21:52:31,990 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:31,997 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:31,998 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:31,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:31,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-13 21:52:31,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:32,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:32,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176736401] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:32,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-13 21:52:32,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-13 21:52:32,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796514949] [2025-03-13 21:52:32,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:32,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:32,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:32,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:32,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:52:32,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:32,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 119 transitions, 1995 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:32,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:32,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:32,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:32,147 INFO L124 PetriNetUnfolderBase]: 434/790 cut-off events. [2025-03-13 21:52:32,147 INFO L125 PetriNetUnfolderBase]: For 9704/9704 co-relation queries the response was YES. [2025-03-13 21:52:32,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4906 conditions, 790 events. 434/790 cut-off events. For 9704/9704 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3677 event pairs, 44 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 4363. Up to 388 conditions per place. [2025-03-13 21:52:32,152 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 109 selfloop transitions, 37 changer transitions 2/149 dead transitions. [2025-03-13 21:52:32,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 149 transitions, 2508 flow [2025-03-13 21:52:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:52:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:52:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2025-03-13 21:52:32,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-03-13 21:52:32,153 INFO L175 Difference]: Start difference. First operand has 118 places, 119 transitions, 1995 flow. Second operand 5 states and 65 transitions. [2025-03-13 21:52:32,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 149 transitions, 2508 flow [2025-03-13 21:52:32,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 149 transitions, 2342 flow, removed 36 selfloop flow, removed 4 redundant places. [2025-03-13 21:52:32,173 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 1876 flow [2025-03-13 21:52:32,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1876, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2025-03-13 21:52:32,173 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-03-13 21:52:32,173 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 1876 flow [2025-03-13 21:52:32,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:32,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:32,174 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:32,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-13 21:52:32,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:32,374 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:32,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1751799340, now seen corresponding path program 6 times [2025-03-13 21:52:32,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:32,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553882620] [2025-03-13 21:52:32,375 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:32,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:32,377 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:32,379 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:32,379 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:32,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:32,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553882620] [2025-03-13 21:52:32,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553882620] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:32,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:32,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:52:32,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015117500] [2025-03-13 21:52:32,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:32,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:32,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:32,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:32,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:52:32,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:32,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 1876 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:32,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:32,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:32,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:32,511 INFO L124 PetriNetUnfolderBase]: 378/687 cut-off events. [2025-03-13 21:52:32,512 INFO L125 PetriNetUnfolderBase]: For 8035/8035 co-relation queries the response was YES. [2025-03-13 21:52:32,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 687 events. 378/687 cut-off events. For 8035/8035 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3073 event pairs, 40 based on Foata normal form. 7/694 useless extension candidates. Maximal degree in co-relation 3833. Up to 284 conditions per place. [2025-03-13 21:52:32,515 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 108 selfloop transitions, 26 changer transitions 3/138 dead transitions. [2025-03-13 21:52:32,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 138 transitions, 2297 flow [2025-03-13 21:52:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:52:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:52:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2025-03-13 21:52:32,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2025-03-13 21:52:32,516 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 1876 flow. Second operand 6 states and 67 transitions. [2025-03-13 21:52:32,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 138 transitions, 2297 flow [2025-03-13 21:52:32,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 2222 flow, removed 7 selfloop flow, removed 5 redundant places. [2025-03-13 21:52:32,529 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 1704 flow [2025-03-13 21:52:32,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1704, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2025-03-13 21:52:32,530 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-03-13 21:52:32,530 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 1704 flow [2025-03-13 21:52:32,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:32,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:32,531 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:32,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-13 21:52:32,531 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:32,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1582714951, now seen corresponding path program 5 times [2025-03-13 21:52:32,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:32,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887470674] [2025-03-13 21:52:32,532 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:32,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:32,535 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:32,536 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:32,536 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:32,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:32,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:32,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887470674] [2025-03-13 21:52:32,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887470674] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:32,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:32,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:52:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946684959] [2025-03-13 21:52:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:32,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:32,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:32,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:52:32,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:32,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 1704 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:32,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:32,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:32,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:32,684 INFO L124 PetriNetUnfolderBase]: 352/641 cut-off events. [2025-03-13 21:52:32,684 INFO L125 PetriNetUnfolderBase]: For 7138/7138 co-relation queries the response was YES. [2025-03-13 21:52:32,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4048 conditions, 641 events. 352/641 cut-off events. For 7138/7138 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2817 event pairs, 56 based on Foata normal form. 6/647 useless extension candidates. Maximal degree in co-relation 3721. Up to 192 conditions per place. [2025-03-13 21:52:32,688 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 103 selfloop transitions, 36 changer transitions 2/142 dead transitions. [2025-03-13 21:52:32,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 142 transitions, 2236 flow [2025-03-13 21:52:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:52:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:52:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-03-13 21:52:32,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-03-13 21:52:32,690 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 1704 flow. Second operand 8 states and 90 transitions. [2025-03-13 21:52:32,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 142 transitions, 2236 flow [2025-03-13 21:52:32,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 142 transitions, 2121 flow, removed 11 selfloop flow, removed 6 redundant places. [2025-03-13 21:52:32,703 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 1608 flow [2025-03-13 21:52:32,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1608, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2025-03-13 21:52:32,704 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 94 predicate places. [2025-03-13 21:52:32,704 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 1608 flow [2025-03-13 21:52:32,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:32,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:32,704 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:32,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-13 21:52:32,704 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:32,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1216446581, now seen corresponding path program 6 times [2025-03-13 21:52:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796763225] [2025-03-13 21:52:32,704 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:32,708 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-13 21:52:32,710 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:52:32,710 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:32,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796763225] [2025-03-13 21:52:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796763225] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:32,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:52:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:52:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033122386] [2025-03-13 21:52:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:32,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:52:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:32,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:52:32,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:52:32,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:32,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 1608 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:32,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:32,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:32,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:32,836 INFO L124 PetriNetUnfolderBase]: 309/562 cut-off events. [2025-03-13 21:52:32,836 INFO L125 PetriNetUnfolderBase]: For 6463/6463 co-relation queries the response was YES. [2025-03-13 21:52:32,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 562 events. 309/562 cut-off events. For 6463/6463 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2365 event pairs, 68 based on Foata normal form. 10/572 useless extension candidates. Maximal degree in co-relation 3293. Up to 248 conditions per place. [2025-03-13 21:52:32,839 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 71 selfloop transitions, 30 changer transitions 9/111 dead transitions. [2025-03-13 21:52:32,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1836 flow [2025-03-13 21:52:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:52:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:52:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2025-03-13 21:52:32,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-13 21:52:32,840 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 1608 flow. Second operand 7 states and 66 transitions. [2025-03-13 21:52:32,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1836 flow [2025-03-13 21:52:32,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 1723 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-03-13 21:52:32,851 INFO L231 Difference]: Finished difference. Result has 116 places, 92 transitions, 1392 flow [2025-03-13 21:52:32,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1392, PETRI_PLACES=116, PETRI_TRANSITIONS=92} [2025-03-13 21:52:32,851 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 92 predicate places. [2025-03-13 21:52:32,851 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 92 transitions, 1392 flow [2025-03-13 21:52:32,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-13 21:52:32,851 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:32,852 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:32,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-13 21:52:32,852 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:32,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:32,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1665573245, now seen corresponding path program 1 times [2025-03-13 21:52:32,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:32,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741389907] [2025-03-13 21:52:32,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:52:32,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:32,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:52:32,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:32,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:32,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:32,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:32,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741389907] [2025-03-13 21:52:32,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741389907] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:32,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117770220] [2025-03-13 21:52:32,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:52:32,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:32,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:32,942 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) [2025-03-13 21:52:32,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-13 21:52:32,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:52:32,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:32,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:32,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:32,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:32,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:33,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:33,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117770220] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:33,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:33,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:33,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72174838] [2025-03-13 21:52:33,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:33,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:33,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:33,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:33,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:33,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:33,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 92 transitions, 1392 flow. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 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) [2025-03-13 21:52:33,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:33,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:33,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:34,366 INFO L124 PetriNetUnfolderBase]: 694/1300 cut-off events. [2025-03-13 21:52:34,366 INFO L125 PetriNetUnfolderBase]: For 12391/12391 co-relation queries the response was YES. [2025-03-13 21:52:34,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7142 conditions, 1300 events. 694/1300 cut-off events. For 12391/12391 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6999 event pairs, 29 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 3941. Up to 242 conditions per place. [2025-03-13 21:52:34,373 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 129 selfloop transitions, 87 changer transitions 68/285 dead transitions. [2025-03-13 21:52:34,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 285 transitions, 3764 flow [2025-03-13 21:52:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-13 21:52:34,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-03-13 21:52:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2025-03-13 21:52:34,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2025-03-13 21:52:34,375 INFO L175 Difference]: Start difference. First operand has 116 places, 92 transitions, 1392 flow. Second operand 36 states and 310 transitions. [2025-03-13 21:52:34,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 285 transitions, 3764 flow [2025-03-13 21:52:34,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 285 transitions, 3647 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-03-13 21:52:34,390 INFO L231 Difference]: Finished difference. Result has 159 places, 129 transitions, 2279 flow [2025-03-13 21:52:34,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2279, PETRI_PLACES=159, PETRI_TRANSITIONS=129} [2025-03-13 21:52:34,392 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2025-03-13 21:52:34,392 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 129 transitions, 2279 flow [2025-03-13 21:52:34,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 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) [2025-03-13 21:52:34,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:34,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:34,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-13 21:52:34,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:34,597 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:34,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash 277842129, now seen corresponding path program 2 times [2025-03-13 21:52:34,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:34,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022014392] [2025-03-13 21:52:34,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:34,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:34,604 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:34,607 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:34,607 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:34,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:34,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:34,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022014392] [2025-03-13 21:52:34,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022014392] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:34,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386838675] [2025-03-13 21:52:34,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:34,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:34,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:34,693 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) [2025-03-13 21:52:34,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-13 21:52:34,715 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:34,723 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:34,723 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:34,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:34,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:34,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:34,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:34,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386838675] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:34,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:34,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:34,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170106179] [2025-03-13 21:52:34,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:34,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:34,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:34,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:34,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:34,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 129 transitions, 2279 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2025-03-13 21:52:34,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:34,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:34,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:35,336 INFO L124 PetriNetUnfolderBase]: 751/1463 cut-off events. [2025-03-13 21:52:35,336 INFO L125 PetriNetUnfolderBase]: For 18161/18161 co-relation queries the response was YES. [2025-03-13 21:52:35,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 1463 events. 751/1463 cut-off events. For 18161/18161 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8408 event pairs, 98 based on Foata normal form. 3/1466 useless extension candidates. Maximal degree in co-relation 8295. Up to 594 conditions per place. [2025-03-13 21:52:35,344 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 102 selfloop transitions, 99 changer transitions 12/214 dead transitions. [2025-03-13 21:52:35,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 214 transitions, 3779 flow [2025-03-13 21:52:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-13 21:52:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-13 21:52:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 121 transitions. [2025-03-13 21:52:35,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2025-03-13 21:52:35,346 INFO L175 Difference]: Start difference. First operand has 159 places, 129 transitions, 2279 flow. Second operand 13 states and 121 transitions. [2025-03-13 21:52:35,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 214 transitions, 3779 flow [2025-03-13 21:52:35,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 214 transitions, 2957 flow, removed 240 selfloop flow, removed 17 redundant places. [2025-03-13 21:52:35,383 INFO L231 Difference]: Finished difference. Result has 148 places, 161 transitions, 2384 flow [2025-03-13 21:52:35,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2384, PETRI_PLACES=148, PETRI_TRANSITIONS=161} [2025-03-13 21:52:35,383 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 124 predicate places. [2025-03-13 21:52:35,383 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 161 transitions, 2384 flow [2025-03-13 21:52:35,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2025-03-13 21:52:35,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:35,384 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:35,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-13 21:52:35,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:35,584 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:35,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1782706343, now seen corresponding path program 3 times [2025-03-13 21:52:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624718471] [2025-03-13 21:52:35,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:35,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:35,590 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:35,590 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:35,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:35,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:35,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624718471] [2025-03-13 21:52:35,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624718471] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:35,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650770700] [2025-03-13 21:52:35,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:35,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:35,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:35,693 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) [2025-03-13 21:52:35,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-13 21:52:35,715 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:35,723 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:35,723 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:35,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:35,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:35,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:35,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:35,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650770700] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:35,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:35,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:35,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909036967] [2025-03-13 21:52:35,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:35,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:35,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:35,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:35,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:35,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:35,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 161 transitions, 2384 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:35,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:35,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:36,427 INFO L124 PetriNetUnfolderBase]: 896/1776 cut-off events. [2025-03-13 21:52:36,427 INFO L125 PetriNetUnfolderBase]: For 17702/17702 co-relation queries the response was YES. [2025-03-13 21:52:36,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 1776 events. 896/1776 cut-off events. For 17702/17702 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11015 event pairs, 106 based on Foata normal form. 4/1780 useless extension candidates. Maximal degree in co-relation 8883. Up to 556 conditions per place. [2025-03-13 21:52:36,435 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 86 selfloop transitions, 153 changer transitions 12/252 dead transitions. [2025-03-13 21:52:36,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 252 transitions, 3942 flow [2025-03-13 21:52:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-13 21:52:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-13 21:52:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2025-03-13 21:52:36,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2025-03-13 21:52:36,436 INFO L175 Difference]: Start difference. First operand has 148 places, 161 transitions, 2384 flow. Second operand 17 states and 147 transitions. [2025-03-13 21:52:36,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 252 transitions, 3942 flow [2025-03-13 21:52:36,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 252 transitions, 3809 flow, removed 33 selfloop flow, removed 5 redundant places. [2025-03-13 21:52:36,472 INFO L231 Difference]: Finished difference. Result has 165 places, 205 transitions, 3477 flow [2025-03-13 21:52:36,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2301, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3477, PETRI_PLACES=165, PETRI_TRANSITIONS=205} [2025-03-13 21:52:36,473 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 141 predicate places. [2025-03-13 21:52:36,473 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 205 transitions, 3477 flow [2025-03-13 21:52:36,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:36,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:36,473 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:36,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-13 21:52:36,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:36,674 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:36,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash 477455249, now seen corresponding path program 4 times [2025-03-13 21:52:36,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:36,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719363888] [2025-03-13 21:52:36,675 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:36,677 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:36,678 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:36,678 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:36,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:36,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:36,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719363888] [2025-03-13 21:52:36,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719363888] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:36,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434701915] [2025-03-13 21:52:36,789 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:36,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:36,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:36,791 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) [2025-03-13 21:52:36,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-13 21:52:36,813 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:36,820 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:36,820 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:36,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:36,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:36,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:36,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:37,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434701915] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:37,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:37,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-13 21:52:37,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894155675] [2025-03-13 21:52:37,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:37,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-13 21:52:37,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:37,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-13 21:52:37,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2025-03-13 21:52:37,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:37,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 205 transitions, 3477 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-13 21:52:37,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:37,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:37,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:37,558 INFO L124 PetriNetUnfolderBase]: 874/1728 cut-off events. [2025-03-13 21:52:37,558 INFO L125 PetriNetUnfolderBase]: For 20582/20582 co-relation queries the response was YES. [2025-03-13 21:52:37,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9793 conditions, 1728 events. 874/1728 cut-off events. For 20582/20582 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10569 event pairs, 96 based on Foata normal form. 4/1732 useless extension candidates. Maximal degree in co-relation 9649. Up to 600 conditions per place. [2025-03-13 21:52:37,565 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 88 selfloop transitions, 146 changer transitions 17/252 dead transitions. [2025-03-13 21:52:37,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 252 transitions, 4317 flow [2025-03-13 21:52:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-13 21:52:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-13 21:52:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2025-03-13 21:52:37,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2025-03-13 21:52:37,566 INFO L175 Difference]: Start difference. First operand has 165 places, 205 transitions, 3477 flow. Second operand 17 states and 147 transitions. [2025-03-13 21:52:37,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 252 transitions, 4317 flow [2025-03-13 21:52:37,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 252 transitions, 4098 flow, removed 89 selfloop flow, removed 4 redundant places. [2025-03-13 21:52:37,612 INFO L231 Difference]: Finished difference. Result has 178 places, 202 transitions, 3504 flow [2025-03-13 21:52:37,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3260, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3504, PETRI_PLACES=178, PETRI_TRANSITIONS=202} [2025-03-13 21:52:37,613 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 154 predicate places. [2025-03-13 21:52:37,613 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 202 transitions, 3504 flow [2025-03-13 21:52:37,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-13 21:52:37,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:37,613 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:37,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-13 21:52:37,813 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,SelfDestructingSolverStorable31 [2025-03-13 21:52:37,814 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:37,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:37,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1772885901, now seen corresponding path program 5 times [2025-03-13 21:52:37,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:37,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465572729] [2025-03-13 21:52:37,814 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:37,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:37,817 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:37,819 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:37,819 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:37,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:37,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465572729] [2025-03-13 21:52:37,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465572729] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:37,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307480342] [2025-03-13 21:52:37,892 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:37,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:37,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:37,894 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) [2025-03-13 21:52:37,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-13 21:52:37,916 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:37,923 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:37,924 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:37,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:37,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-13 21:52:37,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:37,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-13 21:52:37,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307480342] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:37,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-13 21:52:37,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2025-03-13 21:52:37,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275052081] [2025-03-13 21:52:37,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:37,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:37,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:37,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:37,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-13 21:52:37,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:37,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 202 transitions, 3504 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-13 21:52:37,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:37,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:37,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:38,236 INFO L124 PetriNetUnfolderBase]: 802/1568 cut-off events. [2025-03-13 21:52:38,237 INFO L125 PetriNetUnfolderBase]: For 20637/20637 co-relation queries the response was YES. [2025-03-13 21:52:38,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9423 conditions, 1568 events. 802/1568 cut-off events. For 20637/20637 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9129 event pairs, 162 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 9299. Up to 998 conditions per place. [2025-03-13 21:52:38,248 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 124 selfloop transitions, 63 changer transitions 45/233 dead transitions. [2025-03-13 21:52:38,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 233 transitions, 4320 flow [2025-03-13 21:52:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-03-13 21:52:38,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2025-03-13 21:52:38,249 INFO L175 Difference]: Start difference. First operand has 178 places, 202 transitions, 3504 flow. Second operand 9 states and 83 transitions. [2025-03-13 21:52:38,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 233 transitions, 4320 flow [2025-03-13 21:52:38,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 233 transitions, 4058 flow, removed 8 selfloop flow, removed 14 redundant places. [2025-03-13 21:52:38,306 INFO L231 Difference]: Finished difference. Result has 172 places, 175 transitions, 2893 flow [2025-03-13 21:52:38,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3258, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2893, PETRI_PLACES=172, PETRI_TRANSITIONS=175} [2025-03-13 21:52:38,307 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 148 predicate places. [2025-03-13 21:52:38,307 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 175 transitions, 2893 flow [2025-03-13 21:52:38,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-13 21:52:38,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:38,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:38,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-13 21:52:38,507 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,SelfDestructingSolverStorable32 [2025-03-13 21:52:38,508 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:38,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1877368461, now seen corresponding path program 6 times [2025-03-13 21:52:38,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:38,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079336767] [2025-03-13 21:52:38,508 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:38,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:38,511 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:38,513 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:38,513 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:38,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:38,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:38,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079336767] [2025-03-13 21:52:38,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079336767] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:38,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271886617] [2025-03-13 21:52:38,595 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:38,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:38,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:38,597 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) [2025-03-13 21:52:38,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-13 21:52:38,619 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:38,627 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:38,627 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:38,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:38,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:38,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:38,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:38,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271886617] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:38,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:38,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888074734] [2025-03-13 21:52:38,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:38,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:38,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:38,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:38,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:38,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 175 transitions, 2893 flow. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 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) [2025-03-13 21:52:38,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:38,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:38,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:39,194 INFO L124 PetriNetUnfolderBase]: 758/1518 cut-off events. [2025-03-13 21:52:39,194 INFO L125 PetriNetUnfolderBase]: For 17996/17996 co-relation queries the response was YES. [2025-03-13 21:52:39,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8306 conditions, 1518 events. 758/1518 cut-off events. For 17996/17996 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9060 event pairs, 126 based on Foata normal form. 4/1522 useless extension candidates. Maximal degree in co-relation 8167. Up to 776 conditions per place. [2025-03-13 21:52:39,203 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 91 selfloop transitions, 101 changer transitions 23/216 dead transitions. [2025-03-13 21:52:39,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 216 transitions, 3709 flow [2025-03-13 21:52:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-13 21:52:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-13 21:52:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2025-03-13 21:52:39,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-03-13 21:52:39,204 INFO L175 Difference]: Start difference. First operand has 172 places, 175 transitions, 2893 flow. Second operand 12 states and 112 transitions. [2025-03-13 21:52:39,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 216 transitions, 3709 flow [2025-03-13 21:52:39,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 216 transitions, 3411 flow, removed 27 selfloop flow, removed 16 redundant places. [2025-03-13 21:52:39,244 INFO L231 Difference]: Finished difference. Result has 159 places, 163 transitions, 2715 flow [2025-03-13 21:52:39,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2715, PETRI_PLACES=159, PETRI_TRANSITIONS=163} [2025-03-13 21:52:39,244 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2025-03-13 21:52:39,244 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 163 transitions, 2715 flow [2025-03-13 21:52:39,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 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) [2025-03-13 21:52:39,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:39,245 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:39,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-13 21:52:39,445 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,SelfDestructingSolverStorable33 [2025-03-13 21:52:39,445 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:39,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -660834713, now seen corresponding path program 7 times [2025-03-13 21:52:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:39,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798152715] [2025-03-13 21:52:39,446 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:39,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:52:39,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:39,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:39,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:39,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:39,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798152715] [2025-03-13 21:52:39,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798152715] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:39,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755992965] [2025-03-13 21:52:39,524 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:39,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:39,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:39,527 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) [2025-03-13 21:52:39,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-13 21:52:39,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:52:39,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:39,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:39,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:39,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:39,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:39,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:39,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755992965] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:39,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:39,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:39,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509840487] [2025-03-13 21:52:39,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:39,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:39,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:39,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:39,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:39,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:39,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 163 transitions, 2715 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 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) [2025-03-13 21:52:39,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:39,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:39,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:40,233 INFO L124 PetriNetUnfolderBase]: 731/1460 cut-off events. [2025-03-13 21:52:40,234 INFO L125 PetriNetUnfolderBase]: For 16144/16144 co-relation queries the response was YES. [2025-03-13 21:52:40,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8050 conditions, 1460 events. 731/1460 cut-off events. For 16144/16144 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8583 event pairs, 134 based on Foata normal form. 5/1465 useless extension candidates. Maximal degree in co-relation 7923. Up to 816 conditions per place. [2025-03-13 21:52:40,241 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 84 selfloop transitions, 85 changer transitions 26/196 dead transitions. [2025-03-13 21:52:40,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 196 transitions, 3424 flow [2025-03-13 21:52:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-13 21:52:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-13 21:52:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2025-03-13 21:52:40,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2025-03-13 21:52:40,242 INFO L175 Difference]: Start difference. First operand has 159 places, 163 transitions, 2715 flow. Second operand 12 states and 104 transitions. [2025-03-13 21:52:40,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 196 transitions, 3424 flow [2025-03-13 21:52:40,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 196 transitions, 3373 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-03-13 21:52:40,273 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 2551 flow [2025-03-13 21:52:40,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2551, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2025-03-13 21:52:40,274 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 140 predicate places. [2025-03-13 21:52:40,274 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 2551 flow [2025-03-13 21:52:40,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 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) [2025-03-13 21:52:40,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:40,274 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:40,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-13 21:52:40,474 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,SelfDestructingSolverStorable34 [2025-03-13 21:52:40,475 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:40,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:40,475 INFO L85 PathProgramCache]: Analyzing trace with hash -632085999, now seen corresponding path program 8 times [2025-03-13 21:52:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379776021] [2025-03-13 21:52:40,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:40,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:40,477 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:40,479 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:40,479 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:40,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:40,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:40,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379776021] [2025-03-13 21:52:40,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379776021] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347140200] [2025-03-13 21:52:40,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:40,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:40,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:40,559 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) [2025-03-13 21:52:40,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-13 21:52:40,581 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:40,594 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:40,594 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:40,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:40,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:40,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:40,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:40,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347140200] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:40,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:40,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77644646] [2025-03-13 21:52:40,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:40,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:40,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:40,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:40,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:40,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 2551 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2025-03-13 21:52:40,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:40,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:40,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:41,132 INFO L124 PetriNetUnfolderBase]: 650/1262 cut-off events. [2025-03-13 21:52:41,132 INFO L125 PetriNetUnfolderBase]: For 15726/15726 co-relation queries the response was YES. [2025-03-13 21:52:41,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 1262 events. 650/1262 cut-off events. For 15726/15726 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6946 event pairs, 63 based on Foata normal form. 7/1269 useless extension candidates. Maximal degree in co-relation 7355. Up to 451 conditions per place. [2025-03-13 21:52:41,138 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 75 selfloop transitions, 62 changer transitions 51/189 dead transitions. [2025-03-13 21:52:41,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 189 transitions, 3309 flow [2025-03-13 21:52:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-13 21:52:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-13 21:52:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 111 transitions. [2025-03-13 21:52:41,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3881118881118881 [2025-03-13 21:52:41,143 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 2551 flow. Second operand 13 states and 111 transitions. [2025-03-13 21:52:41,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 189 transitions, 3309 flow [2025-03-13 21:52:41,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 189 transitions, 3064 flow, removed 1 selfloop flow, removed 11 redundant places. [2025-03-13 21:52:41,190 INFO L231 Difference]: Finished difference. Result has 160 places, 116 transitions, 1875 flow [2025-03-13 21:52:41,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1875, PETRI_PLACES=160, PETRI_TRANSITIONS=116} [2025-03-13 21:52:41,190 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 136 predicate places. [2025-03-13 21:52:41,190 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 116 transitions, 1875 flow [2025-03-13 21:52:41,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2025-03-13 21:52:41,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:41,190 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:41,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-13 21:52:41,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:41,391 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:41,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:41,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2056163371, now seen corresponding path program 9 times [2025-03-13 21:52:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:41,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853929276] [2025-03-13 21:52:41,392 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:41,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:41,394 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:41,396 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:41,396 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:41,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:41,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:41,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853929276] [2025-03-13 21:52:41,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853929276] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:41,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88416734] [2025-03-13 21:52:41,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:41,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:41,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:41,481 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) [2025-03-13 21:52:41,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-13 21:52:41,503 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:41,511 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:41,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:41,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:41,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:41,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:41,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:41,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88416734] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:41,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:41,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-13 21:52:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48586831] [2025-03-13 21:52:41,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:41,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-13 21:52:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:41,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-13 21:52:41,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2025-03-13 21:52:41,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:41,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 116 transitions, 1875 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-13 21:52:41,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:41,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:41,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:42,597 INFO L124 PetriNetUnfolderBase]: 789/1575 cut-off events. [2025-03-13 21:52:42,597 INFO L125 PetriNetUnfolderBase]: For 17714/17714 co-relation queries the response was YES. [2025-03-13 21:52:42,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8823 conditions, 1575 events. 789/1575 cut-off events. For 17714/17714 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9362 event pairs, 119 based on Foata normal form. 17/1592 useless extension candidates. Maximal degree in co-relation 8740. Up to 605 conditions per place. [2025-03-13 21:52:42,604 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 135 selfloop transitions, 134 changer transitions 17/287 dead transitions. [2025-03-13 21:52:42,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 287 transitions, 4580 flow [2025-03-13 21:52:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-13 21:52:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-13 21:52:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 268 transitions. [2025-03-13 21:52:42,605 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3582887700534759 [2025-03-13 21:52:42,605 INFO L175 Difference]: Start difference. First operand has 160 places, 116 transitions, 1875 flow. Second operand 34 states and 268 transitions. [2025-03-13 21:52:42,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 287 transitions, 4580 flow [2025-03-13 21:52:42,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 287 transitions, 4194 flow, removed 24 selfloop flow, removed 19 redundant places. [2025-03-13 21:52:42,638 INFO L231 Difference]: Finished difference. Result has 175 places, 196 transitions, 3372 flow [2025-03-13 21:52:42,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3372, PETRI_PLACES=175, PETRI_TRANSITIONS=196} [2025-03-13 21:52:42,638 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 151 predicate places. [2025-03-13 21:52:42,638 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 196 transitions, 3372 flow [2025-03-13 21:52:42,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-13 21:52:42,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:42,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:42,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-13 21:52:42,843 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,SelfDestructingSolverStorable36 [2025-03-13 21:52:42,843 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:42,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash 686231739, now seen corresponding path program 10 times [2025-03-13 21:52:42,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:42,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838019492] [2025-03-13 21:52:42,843 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:42,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:42,845 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:42,846 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:42,846 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:42,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838019492] [2025-03-13 21:52:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838019492] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976531584] [2025-03-13 21:52:42,940 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:42,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:42,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:42,943 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) [2025-03-13 21:52:42,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-13 21:52:42,964 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:42,972 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:42,972 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:42,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:42,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:42,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:43,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:43,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976531584] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:43,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:43,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-13 21:52:43,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844441816] [2025-03-13 21:52:43,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:43,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-13 21:52:43,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:43,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-13 21:52:43,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2025-03-13 21:52:43,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:43,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 196 transitions, 3372 flow. Second operand has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 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) [2025-03-13 21:52:43,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:43,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:43,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:43,874 INFO L124 PetriNetUnfolderBase]: 1048/2069 cut-off events. [2025-03-13 21:52:43,874 INFO L125 PetriNetUnfolderBase]: For 24786/24786 co-relation queries the response was YES. [2025-03-13 21:52:43,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11887 conditions, 2069 events. 1048/2069 cut-off events. For 24786/24786 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13093 event pairs, 140 based on Foata normal form. 6/2075 useless extension candidates. Maximal degree in co-relation 11741. Up to 798 conditions per place. [2025-03-13 21:52:43,886 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 121 selfloop transitions, 122 changer transitions 77/321 dead transitions. [2025-03-13 21:52:43,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 321 transitions, 5599 flow [2025-03-13 21:52:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-13 21:52:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-13 21:52:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 173 transitions. [2025-03-13 21:52:43,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37445887445887444 [2025-03-13 21:52:43,889 INFO L175 Difference]: Start difference. First operand has 175 places, 196 transitions, 3372 flow. Second operand 21 states and 173 transitions. [2025-03-13 21:52:43,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 321 transitions, 5599 flow [2025-03-13 21:52:43,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 321 transitions, 4996 flow, removed 234 selfloop flow, removed 12 redundant places. [2025-03-13 21:52:43,964 INFO L231 Difference]: Finished difference. Result has 186 places, 199 transitions, 3346 flow [2025-03-13 21:52:43,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3346, PETRI_PLACES=186, PETRI_TRANSITIONS=199} [2025-03-13 21:52:43,965 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 162 predicate places. [2025-03-13 21:52:43,965 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 199 transitions, 3346 flow [2025-03-13 21:52:43,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 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) [2025-03-13 21:52:43,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:43,965 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:43,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-13 21:52:44,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-13 21:52:44,165 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:44,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash -888056093, now seen corresponding path program 11 times [2025-03-13 21:52:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866230273] [2025-03-13 21:52:44,166 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:44,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:44,168 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:44,169 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:44,169 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:44,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:44,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866230273] [2025-03-13 21:52:44,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866230273] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765814814] [2025-03-13 21:52:44,227 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:44,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:44,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:44,229 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) [2025-03-13 21:52:44,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-13 21:52:44,252 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:44,260 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:44,260 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:44,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:44,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-13 21:52:44,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:44,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-13 21:52:44,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765814814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:44,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-13 21:52:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2025-03-13 21:52:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244468793] [2025-03-13 21:52:44,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:44,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:44,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:44,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:44,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-03-13 21:52:44,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:44,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 199 transitions, 3346 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-13 21:52:44,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:44,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:44,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:44,612 INFO L124 PetriNetUnfolderBase]: 908/1815 cut-off events. [2025-03-13 21:52:44,612 INFO L125 PetriNetUnfolderBase]: For 22880/22880 co-relation queries the response was YES. [2025-03-13 21:52:44,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10228 conditions, 1815 events. 908/1815 cut-off events. For 22880/22880 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11231 event pairs, 222 based on Foata normal form. 4/1819 useless extension candidates. Maximal degree in co-relation 10080. Up to 1263 conditions per place. [2025-03-13 21:52:44,626 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 135 selfloop transitions, 90 changer transitions 20/246 dead transitions. [2025-03-13 21:52:44,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 246 transitions, 4567 flow [2025-03-13 21:52:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:44,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2025-03-13 21:52:44,627 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-03-13 21:52:44,627 INFO L175 Difference]: Start difference. First operand has 186 places, 199 transitions, 3346 flow. Second operand 9 states and 84 transitions. [2025-03-13 21:52:44,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 246 transitions, 4567 flow [2025-03-13 21:52:44,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 246 transitions, 4398 flow, removed 44 selfloop flow, removed 16 redundant places. [2025-03-13 21:52:44,680 INFO L231 Difference]: Finished difference. Result has 178 places, 211 transitions, 3747 flow [2025-03-13 21:52:44,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3190, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3747, PETRI_PLACES=178, PETRI_TRANSITIONS=211} [2025-03-13 21:52:44,681 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 154 predicate places. [2025-03-13 21:52:44,681 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 211 transitions, 3747 flow [2025-03-13 21:52:44,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-13 21:52:44,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:44,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:44,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-13 21:52:44,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-13 21:52:44,882 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:44,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1313355395, now seen corresponding path program 12 times [2025-03-13 21:52:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477194812] [2025-03-13 21:52:44,882 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:44,884 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:44,886 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:44,886 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:44,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:44,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:44,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477194812] [2025-03-13 21:52:44,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477194812] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:44,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595516475] [2025-03-13 21:52:44,986 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:44,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:44,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:44,990 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) [2025-03-13 21:52:44,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-13 21:52:45,017 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:45,027 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:45,027 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:45,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:45,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:45,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:45,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:45,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595516475] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:45,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:45,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-03-13 21:52:45,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401940869] [2025-03-13 21:52:45,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:45,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-13 21:52:45,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:45,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-13 21:52:45,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-13 21:52:45,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:45,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 211 transitions, 3747 flow. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 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) [2025-03-13 21:52:45,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:45,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:45,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:46,134 INFO L124 PetriNetUnfolderBase]: 945/1891 cut-off events. [2025-03-13 21:52:46,134 INFO L125 PetriNetUnfolderBase]: For 25808/25808 co-relation queries the response was YES. [2025-03-13 21:52:46,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11111 conditions, 1891 events. 945/1891 cut-off events. For 25808/25808 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11781 event pairs, 102 based on Foata normal form. 11/1902 useless extension candidates. Maximal degree in co-relation 10961. Up to 636 conditions per place. [2025-03-13 21:52:46,150 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 95 selfloop transitions, 163 changer transitions 24/283 dead transitions. [2025-03-13 21:52:46,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 283 transitions, 5016 flow [2025-03-13 21:52:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-13 21:52:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-13 21:52:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 189 transitions. [2025-03-13 21:52:46,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34363636363636363 [2025-03-13 21:52:46,151 INFO L175 Difference]: Start difference. First operand has 178 places, 211 transitions, 3747 flow. Second operand 25 states and 189 transitions. [2025-03-13 21:52:46,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 283 transitions, 5016 flow [2025-03-13 21:52:46,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 283 transitions, 4905 flow, removed 25 selfloop flow, removed 3 redundant places. [2025-03-13 21:52:46,229 INFO L231 Difference]: Finished difference. Result has 206 places, 224 transitions, 4396 flow [2025-03-13 21:52:46,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4396, PETRI_PLACES=206, PETRI_TRANSITIONS=224} [2025-03-13 21:52:46,229 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 182 predicate places. [2025-03-13 21:52:46,229 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 224 transitions, 4396 flow [2025-03-13 21:52:46,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 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) [2025-03-13 21:52:46,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:46,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:46,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-13 21:52:46,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-13 21:52:46,430 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:46,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:46,431 INFO L85 PathProgramCache]: Analyzing trace with hash 505453593, now seen corresponding path program 13 times [2025-03-13 21:52:46,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:46,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721806004] [2025-03-13 21:52:46,431 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:46,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:46,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:52:46,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:46,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:46,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721806004] [2025-03-13 21:52:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721806004] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299339947] [2025-03-13 21:52:46,520 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:46,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:46,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:46,521 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) [2025-03-13 21:52:46,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-13 21:52:46,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:52:46,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:46,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:46,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:46,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:46,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:46,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299339947] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:46,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2025-03-13 21:52:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83784429] [2025-03-13 21:52:46,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:46,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-13 21:52:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:46,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-13 21:52:46,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2025-03-13 21:52:46,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:46,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 224 transitions, 4396 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:46,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:46,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:46,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:47,409 INFO L124 PetriNetUnfolderBase]: 1005/2053 cut-off events. [2025-03-13 21:52:47,409 INFO L125 PetriNetUnfolderBase]: For 29840/29840 co-relation queries the response was YES. [2025-03-13 21:52:47,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12713 conditions, 2053 events. 1005/2053 cut-off events. For 29840/29840 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13409 event pairs, 81 based on Foata normal form. 3/2056 useless extension candidates. Maximal degree in co-relation 12533. Up to 659 conditions per place. [2025-03-13 21:52:47,425 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 91 selfloop transitions, 187 changer transitions 22/301 dead transitions. [2025-03-13 21:52:47,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 301 transitions, 6010 flow [2025-03-13 21:52:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-13 21:52:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-13 21:52:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 170 transitions. [2025-03-13 21:52:47,426 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2025-03-13 21:52:47,426 INFO L175 Difference]: Start difference. First operand has 206 places, 224 transitions, 4396 flow. Second operand 20 states and 170 transitions. [2025-03-13 21:52:47,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 301 transitions, 6010 flow [2025-03-13 21:52:47,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 301 transitions, 5562 flow, removed 88 selfloop flow, removed 11 redundant places. [2025-03-13 21:52:47,522 INFO L231 Difference]: Finished difference. Result has 213 places, 241 transitions, 4828 flow [2025-03-13 21:52:47,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4022, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4828, PETRI_PLACES=213, PETRI_TRANSITIONS=241} [2025-03-13 21:52:47,523 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 189 predicate places. [2025-03-13 21:52:47,523 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 241 transitions, 4828 flow [2025-03-13 21:52:47,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:47,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:47,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:47,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-13 21:52:47,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:47,723 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:47,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1300127083, now seen corresponding path program 14 times [2025-03-13 21:52:47,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:47,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089115638] [2025-03-13 21:52:47,724 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:47,726 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:47,728 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:47,728 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:47,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:47,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:47,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089115638] [2025-03-13 21:52:47,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089115638] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:47,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042218501] [2025-03-13 21:52:47,832 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:47,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:47,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:47,834 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:47,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-13 21:52:47,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:47,868 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:47,868 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:47,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:47,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:47,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:47,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:48,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042218501] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:48,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:48,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-03-13 21:52:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195109119] [2025-03-13 21:52:48,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:48,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-13 21:52:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:48,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-13 21:52:48,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2025-03-13 21:52:48,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:48,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 241 transitions, 4828 flow. Second operand has 20 states, 20 states have (on average 4.45) internal successors, (89), 20 states have internal predecessors, (89), 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) [2025-03-13 21:52:48,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:48,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:48,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:48,849 INFO L124 PetriNetUnfolderBase]: 960/1941 cut-off events. [2025-03-13 21:52:48,849 INFO L125 PetriNetUnfolderBase]: For 27823/27823 co-relation queries the response was YES. [2025-03-13 21:52:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12091 conditions, 1941 events. 960/1941 cut-off events. For 27823/27823 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12298 event pairs, 57 based on Foata normal form. 3/1944 useless extension candidates. Maximal degree in co-relation 11924. Up to 659 conditions per place. [2025-03-13 21:52:48,865 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 81 selfloop transitions, 175 changer transitions 30/287 dead transitions. [2025-03-13 21:52:48,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 287 transitions, 5665 flow [2025-03-13 21:52:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-13 21:52:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-13 21:52:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 180 transitions. [2025-03-13 21:52:48,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2025-03-13 21:52:48,867 INFO L175 Difference]: Start difference. First operand has 213 places, 241 transitions, 4828 flow. Second operand 25 states and 180 transitions. [2025-03-13 21:52:48,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 287 transitions, 5665 flow [2025-03-13 21:52:48,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 287 transitions, 5424 flow, removed 50 selfloop flow, removed 10 redundant places. [2025-03-13 21:52:48,938 INFO L231 Difference]: Finished difference. Result has 227 places, 231 transitions, 4733 flow [2025-03-13 21:52:48,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4596, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4733, PETRI_PLACES=227, PETRI_TRANSITIONS=231} [2025-03-13 21:52:48,939 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 203 predicate places. [2025-03-13 21:52:48,939 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 231 transitions, 4733 flow [2025-03-13 21:52:48,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 20 states have internal predecessors, (89), 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) [2025-03-13 21:52:48,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:48,940 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:48,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-13 21:52:49,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-03-13 21:52:49,140 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:49,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:49,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1532017969, now seen corresponding path program 15 times [2025-03-13 21:52:49,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:49,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508470895] [2025-03-13 21:52:49,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:49,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:49,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:49,144 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:49,145 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:49,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:49,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508470895] [2025-03-13 21:52:49,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508470895] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12423755] [2025-03-13 21:52:49,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:49,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:49,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:49,226 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:49,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-13 21:52:49,249 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:49,256 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:49,256 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:49,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:49,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:49,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:49,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:49,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12423755] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:49,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:49,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:49,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464328205] [2025-03-13 21:52:49,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:49,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:49,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:49,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:49,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:49,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 231 transitions, 4733 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2025-03-13 21:52:49,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:49,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:49,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:49,932 INFO L124 PetriNetUnfolderBase]: 938/1899 cut-off events. [2025-03-13 21:52:49,933 INFO L125 PetriNetUnfolderBase]: For 28909/28909 co-relation queries the response was YES. [2025-03-13 21:52:49,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11897 conditions, 1899 events. 938/1899 cut-off events. For 28909/28909 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12088 event pairs, 208 based on Foata normal form. 4/1903 useless extension candidates. Maximal degree in co-relation 11707. Up to 1152 conditions per place. [2025-03-13 21:52:49,947 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 132 selfloop transitions, 110 changer transitions 32/275 dead transitions. [2025-03-13 21:52:49,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 275 transitions, 5794 flow [2025-03-13 21:52:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-13 21:52:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-13 21:52:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 112 transitions. [2025-03-13 21:52:49,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2025-03-13 21:52:49,948 INFO L175 Difference]: Start difference. First operand has 227 places, 231 transitions, 4733 flow. Second operand 13 states and 112 transitions. [2025-03-13 21:52:49,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 275 transitions, 5794 flow [2025-03-13 21:52:50,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 275 transitions, 5387 flow, removed 16 selfloop flow, removed 20 redundant places. [2025-03-13 21:52:50,030 INFO L231 Difference]: Finished difference. Result has 216 places, 218 transitions, 4385 flow [2025-03-13 21:52:50,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4343, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4385, PETRI_PLACES=216, PETRI_TRANSITIONS=218} [2025-03-13 21:52:50,031 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 192 predicate places. [2025-03-13 21:52:50,031 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 218 transitions, 4385 flow [2025-03-13 21:52:50,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2025-03-13 21:52:50,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:50,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:50,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-13 21:52:50,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:50,235 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:50,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash -582518255, now seen corresponding path program 16 times [2025-03-13 21:52:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:50,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715040465] [2025-03-13 21:52:50,235 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:50,237 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:50,239 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:50,239 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:50,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:50,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715040465] [2025-03-13 21:52:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715040465] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945071781] [2025-03-13 21:52:50,313 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:50,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:50,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:50,314 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:50,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-13 21:52:50,338 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:50,346 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:50,346 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:50,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:50,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:50,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:50,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:50,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945071781] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:50,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:50,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-13 21:52:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494074813] [2025-03-13 21:52:50,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:50,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-13 21:52:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:50,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-13 21:52:50,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2025-03-13 21:52:50,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:50,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 218 transitions, 4385 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-13 21:52:50,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:50,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:50,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:51,188 INFO L124 PetriNetUnfolderBase]: 1022/2048 cut-off events. [2025-03-13 21:52:51,188 INFO L125 PetriNetUnfolderBase]: For 30355/30355 co-relation queries the response was YES. [2025-03-13 21:52:51,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12616 conditions, 2048 events. 1022/2048 cut-off events. For 30355/30355 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13095 event pairs, 162 based on Foata normal form. 7/2055 useless extension candidates. Maximal degree in co-relation 12469. Up to 810 conditions per place. [2025-03-13 21:52:51,199 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 147 selfloop transitions, 101 changer transitions 56/305 dead transitions. [2025-03-13 21:52:51,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 305 transitions, 6228 flow [2025-03-13 21:52:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-13 21:52:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-13 21:52:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 139 transitions. [2025-03-13 21:52:51,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3716577540106952 [2025-03-13 21:52:51,200 INFO L175 Difference]: Start difference. First operand has 216 places, 218 transitions, 4385 flow. Second operand 17 states and 139 transitions. [2025-03-13 21:52:51,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 305 transitions, 6228 flow [2025-03-13 21:52:51,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 305 transitions, 5915 flow, removed 19 selfloop flow, removed 10 redundant places. [2025-03-13 21:52:51,282 INFO L231 Difference]: Finished difference. Result has 220 places, 213 transitions, 4287 flow [2025-03-13 21:52:51,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4138, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4287, PETRI_PLACES=220, PETRI_TRANSITIONS=213} [2025-03-13 21:52:51,283 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 196 predicate places. [2025-03-13 21:52:51,283 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 213 transitions, 4287 flow [2025-03-13 21:52:51,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-13 21:52:51,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:51,283 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:51,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-13 21:52:51,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:51,484 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:51,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1714465127, now seen corresponding path program 17 times [2025-03-13 21:52:51,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:51,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051627203] [2025-03-13 21:52:51,484 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:51,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:51,486 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:51,487 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:51,487 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:51,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:51,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051627203] [2025-03-13 21:52:51,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051627203] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340567315] [2025-03-13 21:52:51,540 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:51,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:51,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:51,542 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:51,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-13 21:52:51,576 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:51,584 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:51,584 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:51,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:51,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-13 21:52:51,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:51,640 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-13 21:52:51,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340567315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:51,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-13 21:52:51,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2025-03-13 21:52:51,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816136301] [2025-03-13 21:52:51,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:51,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:51,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:51,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:51,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-03-13 21:52:51,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:51,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 213 transitions, 4287 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-13 21:52:51,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:51,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:51,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:51,866 INFO L124 PetriNetUnfolderBase]: 769/1604 cut-off events. [2025-03-13 21:52:51,866 INFO L125 PetriNetUnfolderBase]: For 21988/21988 co-relation queries the response was YES. [2025-03-13 21:52:51,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10060 conditions, 1604 events. 769/1604 cut-off events. For 21988/21988 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10018 event pairs, 220 based on Foata normal form. 2/1606 useless extension candidates. Maximal degree in co-relation 9899. Up to 1130 conditions per place. [2025-03-13 21:52:51,881 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 144 selfloop transitions, 71 changer transitions 14/230 dead transitions. [2025-03-13 21:52:51,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 230 transitions, 4867 flow [2025-03-13 21:52:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2025-03-13 21:52:51,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2025-03-13 21:52:51,882 INFO L175 Difference]: Start difference. First operand has 220 places, 213 transitions, 4287 flow. Second operand 9 states and 79 transitions. [2025-03-13 21:52:51,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 230 transitions, 4867 flow [2025-03-13 21:52:51,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 230 transitions, 4657 flow, removed 35 selfloop flow, removed 11 redundant places. [2025-03-13 21:52:51,945 INFO L231 Difference]: Finished difference. Result has 215 places, 208 transitions, 4131 flow [2025-03-13 21:52:51,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4077, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4131, PETRI_PLACES=215, PETRI_TRANSITIONS=208} [2025-03-13 21:52:51,946 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 191 predicate places. [2025-03-13 21:52:51,946 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 208 transitions, 4131 flow [2025-03-13 21:52:51,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-13 21:52:51,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:51,946 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:51,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-13 21:52:52,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:52,147 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:52,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1190392911, now seen corresponding path program 18 times [2025-03-13 21:52:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590619127] [2025-03-13 21:52:52,147 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:52,149 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:52,151 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:52,151 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:52,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590619127] [2025-03-13 21:52:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590619127] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980968984] [2025-03-13 21:52:52,229 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:52,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:52,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:52,231 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:52,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-13 21:52:52,255 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:52,263 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:52,264 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:52,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:52,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:52,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:52,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:52,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980968984] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:52,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:52,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328677281] [2025-03-13 21:52:52,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:52,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:52,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:52,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:52,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:52,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:52,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 208 transitions, 4131 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2025-03-13 21:52:52,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:52,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:52,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:52,957 INFO L124 PetriNetUnfolderBase]: 753/1574 cut-off events. [2025-03-13 21:52:52,957 INFO L125 PetriNetUnfolderBase]: For 20805/20805 co-relation queries the response was YES. [2025-03-13 21:52:52,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9666 conditions, 1574 events. 753/1574 cut-off events. For 20805/20805 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9794 event pairs, 183 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 9506. Up to 964 conditions per place. [2025-03-13 21:52:52,969 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 155 selfloop transitions, 78 changer transitions 10/244 dead transitions. [2025-03-13 21:52:52,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 244 transitions, 5008 flow [2025-03-13 21:52:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-13 21:52:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-13 21:52:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 106 transitions. [2025-03-13 21:52:52,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2025-03-13 21:52:52,970 INFO L175 Difference]: Start difference. First operand has 215 places, 208 transitions, 4131 flow. Second operand 13 states and 106 transitions. [2025-03-13 21:52:52,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 244 transitions, 5008 flow [2025-03-13 21:52:53,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 244 transitions, 4782 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-03-13 21:52:53,032 INFO L231 Difference]: Finished difference. Result has 218 places, 207 transitions, 4067 flow [2025-03-13 21:52:53,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4067, PETRI_PLACES=218, PETRI_TRANSITIONS=207} [2025-03-13 21:52:53,033 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 194 predicate places. [2025-03-13 21:52:53,033 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 207 transitions, 4067 flow [2025-03-13 21:52:53,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2025-03-13 21:52:53,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:53,033 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:53,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-13 21:52:53,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:53,234 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:53,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash -329372659, now seen corresponding path program 19 times [2025-03-13 21:52:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:53,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562123232] [2025-03-13 21:52:53,234 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:53,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:53,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:52:53,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:53,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:53,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:53,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:53,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562123232] [2025-03-13 21:52:53,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562123232] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:53,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116665539] [2025-03-13 21:52:53,306 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:53,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:53,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:53,308 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:53,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-13 21:52:53,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:52:53,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:53,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:53,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:53,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:53,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:53,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:53,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116665539] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:53,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:53,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:53,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682848975] [2025-03-13 21:52:53,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:53,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:53,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:53,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:53,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:53,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:53,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 207 transitions, 4067 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2025-03-13 21:52:53,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:53,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:53,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:54,411 INFO L124 PetriNetUnfolderBase]: 1282/2687 cut-off events. [2025-03-13 21:52:54,411 INFO L125 PetriNetUnfolderBase]: For 33386/33386 co-relation queries the response was YES. [2025-03-13 21:52:54,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16196 conditions, 2687 events. 1282/2687 cut-off events. For 33386/33386 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19047 event pairs, 126 based on Foata normal form. 15/2702 useless extension candidates. Maximal degree in co-relation 16008. Up to 569 conditions per place. [2025-03-13 21:52:54,425 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 178 selfloop transitions, 172 changer transitions 82/433 dead transitions. [2025-03-13 21:52:54,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 433 transitions, 8651 flow [2025-03-13 21:52:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-13 21:52:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-13 21:52:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 234 transitions. [2025-03-13 21:52:54,426 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2025-03-13 21:52:54,427 INFO L175 Difference]: Start difference. First operand has 218 places, 207 transitions, 4067 flow. Second operand 30 states and 234 transitions. [2025-03-13 21:52:54,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 433 transitions, 8651 flow [2025-03-13 21:52:54,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 433 transitions, 8302 flow, removed 25 selfloop flow, removed 13 redundant places. [2025-03-13 21:52:54,531 INFO L231 Difference]: Finished difference. Result has 241 places, 269 transitions, 5975 flow [2025-03-13 21:52:54,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3873, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5975, PETRI_PLACES=241, PETRI_TRANSITIONS=269} [2025-03-13 21:52:54,531 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 217 predicate places. [2025-03-13 21:52:54,531 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 269 transitions, 5975 flow [2025-03-13 21:52:54,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2025-03-13 21:52:54,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:54,531 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:54,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-13 21:52:54,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-03-13 21:52:54,732 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:54,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:54,732 INFO L85 PathProgramCache]: Analyzing trace with hash 545696465, now seen corresponding path program 20 times [2025-03-13 21:52:54,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:54,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622201787] [2025-03-13 21:52:54,732 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:54,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:54,737 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:54,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:54,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:54,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:54,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:54,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622201787] [2025-03-13 21:52:54,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622201787] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:54,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28164932] [2025-03-13 21:52:54,824 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:52:54,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:54,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:54,826 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:54,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-13 21:52:54,848 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:54,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:54,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:54,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:54,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:54,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:54,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:55,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28164932] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:55,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:55,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2025-03-13 21:52:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499907503] [2025-03-13 21:52:55,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:55,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-13 21:52:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:55,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-13 21:52:55,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-03-13 21:52:55,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:55,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 269 transitions, 5975 flow. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:55,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:55,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:55,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:55,840 INFO L124 PetriNetUnfolderBase]: 1325/2813 cut-off events. [2025-03-13 21:52:55,840 INFO L125 PetriNetUnfolderBase]: For 38336/38336 co-relation queries the response was YES. [2025-03-13 21:52:55,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18736 conditions, 2813 events. 1325/2813 cut-off events. For 38336/38336 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 20940 event pairs, 165 based on Foata normal form. 4/2817 useless extension candidates. Maximal degree in co-relation 18481. Up to 1013 conditions per place. [2025-03-13 21:52:55,855 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 124 selfloop transitions, 215 changer transitions 100/440 dead transitions. [2025-03-13 21:52:55,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 440 transitions, 9785 flow [2025-03-13 21:52:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-13 21:52:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-13 21:52:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 210 transitions. [2025-03-13 21:52:55,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2025-03-13 21:52:55,856 INFO L175 Difference]: Start difference. First operand has 241 places, 269 transitions, 5975 flow. Second operand 25 states and 210 transitions. [2025-03-13 21:52:55,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 440 transitions, 9785 flow [2025-03-13 21:52:55,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 440 transitions, 9067 flow, removed 96 selfloop flow, removed 20 redundant places. [2025-03-13 21:52:55,965 INFO L231 Difference]: Finished difference. Result has 235 places, 299 transitions, 6665 flow [2025-03-13 21:52:55,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5493, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6665, PETRI_PLACES=235, PETRI_TRANSITIONS=299} [2025-03-13 21:52:55,966 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 211 predicate places. [2025-03-13 21:52:55,966 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 299 transitions, 6665 flow [2025-03-13 21:52:55,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:55,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:55,966 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:55,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-13 21:52:56,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-03-13 21:52:56,167 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:56,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash 987593839, now seen corresponding path program 21 times [2025-03-13 21:52:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:56,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762656547] [2025-03-13 21:52:56,167 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:56,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:56,171 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:56,171 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:56,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:56,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:56,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762656547] [2025-03-13 21:52:56,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762656547] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:56,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111608364] [2025-03-13 21:52:56,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:52:56,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:56,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:56,248 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:56,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-13 21:52:56,270 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:56,279 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:56,279 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:52:56,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:56,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:56,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:56,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:56,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111608364] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:56,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:56,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:56,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48013136] [2025-03-13 21:52:56,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:56,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:56,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:56,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:56,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:56,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 299 transitions, 6665 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:56,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:56,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:56,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:57,084 INFO L124 PetriNetUnfolderBase]: 1023/2222 cut-off events. [2025-03-13 21:52:57,084 INFO L125 PetriNetUnfolderBase]: For 28708/28708 co-relation queries the response was YES. [2025-03-13 21:52:57,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14772 conditions, 2222 events. 1023/2222 cut-off events. For 28708/28708 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 15875 event pairs, 63 based on Foata normal form. 13/2235 useless extension candidates. Maximal degree in co-relation 14603. Up to 607 conditions per place. [2025-03-13 21:52:57,105 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 109 selfloop transitions, 131 changer transitions 101/342 dead transitions. [2025-03-13 21:52:57,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 342 transitions, 7823 flow [2025-03-13 21:52:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-13 21:52:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-13 21:52:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 125 transitions. [2025-03-13 21:52:57,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2025-03-13 21:52:57,106 INFO L175 Difference]: Start difference. First operand has 235 places, 299 transitions, 6665 flow. Second operand 16 states and 125 transitions. [2025-03-13 21:52:57,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 342 transitions, 7823 flow [2025-03-13 21:52:57,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 342 transitions, 7414 flow, removed 169 selfloop flow, removed 6 redundant places. [2025-03-13 21:52:57,219 INFO L231 Difference]: Finished difference. Result has 243 places, 218 transitions, 4789 flow [2025-03-13 21:52:57,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6303, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4789, PETRI_PLACES=243, PETRI_TRANSITIONS=218} [2025-03-13 21:52:57,219 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 219 predicate places. [2025-03-13 21:52:57,219 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 218 transitions, 4789 flow [2025-03-13 21:52:57,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:57,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:57,220 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:57,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-13 21:52:57,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-03-13 21:52:57,420 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:57,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:57,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2015579067, now seen corresponding path program 22 times [2025-03-13 21:52:57,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:57,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330412935] [2025-03-13 21:52:57,421 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:57,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:57,423 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:57,424 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:57,424 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:57,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330412935] [2025-03-13 21:52:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330412935] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546517421] [2025-03-13 21:52:57,495 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:52:57,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:57,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:57,497 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:57,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-13 21:52:57,517 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:57,525 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:57,525 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:52:57,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:57,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:57,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:57,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:57,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546517421] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:57,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:57,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-13 21:52:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755410617] [2025-03-13 21:52:57,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:57,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-13 21:52:57,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:57,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-13 21:52:57,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2025-03-13 21:52:57,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:57,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 218 transitions, 4789 flow. Second operand has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 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) [2025-03-13 21:52:57,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:57,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:57,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:58,212 INFO L124 PetriNetUnfolderBase]: 729/1631 cut-off events. [2025-03-13 21:52:58,213 INFO L125 PetriNetUnfolderBase]: For 21591/21591 co-relation queries the response was YES. [2025-03-13 21:52:58,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10361 conditions, 1631 events. 729/1631 cut-off events. For 21591/21591 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10966 event pairs, 157 based on Foata normal form. 6/1637 useless extension candidates. Maximal degree in co-relation 10296. Up to 841 conditions per place. [2025-03-13 21:52:58,221 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 119 selfloop transitions, 96 changer transitions 32/248 dead transitions. [2025-03-13 21:52:58,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 248 transitions, 5489 flow [2025-03-13 21:52:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-13 21:52:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-13 21:52:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 128 transitions. [2025-03-13 21:52:58,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32323232323232326 [2025-03-13 21:52:58,222 INFO L175 Difference]: Start difference. First operand has 243 places, 218 transitions, 4789 flow. Second operand 18 states and 128 transitions. [2025-03-13 21:52:58,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 248 transitions, 5489 flow [2025-03-13 21:52:58,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 248 transitions, 5019 flow, removed 48 selfloop flow, removed 20 redundant places. [2025-03-13 21:52:58,283 INFO L231 Difference]: Finished difference. Result has 231 places, 202 transitions, 4142 flow [2025-03-13 21:52:58,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4321, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4142, PETRI_PLACES=231, PETRI_TRANSITIONS=202} [2025-03-13 21:52:58,283 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 207 predicate places. [2025-03-13 21:52:58,283 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 202 transitions, 4142 flow [2025-03-13 21:52:58,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 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) [2025-03-13 21:52:58,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:58,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:58,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-13 21:52:58,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-03-13 21:52:58,484 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:58,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2024448861, now seen corresponding path program 23 times [2025-03-13 21:52:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19444431] [2025-03-13 21:52:58,485 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:58,486 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:58,487 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:58,487 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:58,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:58,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:58,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19444431] [2025-03-13 21:52:58,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19444431] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:58,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959460853] [2025-03-13 21:52:58,532 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:52:58,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:58,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:58,534 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:58,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-13 21:52:58,554 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:58,561 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:58,561 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:52:58,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:58,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-13 21:52:58,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:58,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-13 21:52:58,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959460853] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:52:58,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-13 21:52:58,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2025-03-13 21:52:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062216277] [2025-03-13 21:52:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:52:58,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:52:58,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:58,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:52:58,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-13 21:52:58,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:58,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 202 transitions, 4142 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-13 21:52:58,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:58,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:58,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:58,760 INFO L124 PetriNetUnfolderBase]: 635/1403 cut-off events. [2025-03-13 21:52:58,760 INFO L125 PetriNetUnfolderBase]: For 18960/18960 co-relation queries the response was YES. [2025-03-13 21:52:58,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8665 conditions, 1403 events. 635/1403 cut-off events. For 18960/18960 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8945 event pairs, 127 based on Foata normal form. 6/1409 useless extension candidates. Maximal degree in co-relation 8603. Up to 701 conditions per place. [2025-03-13 21:52:58,766 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 134 selfloop transitions, 59 changer transitions 23/217 dead transitions. [2025-03-13 21:52:58,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 217 transitions, 4678 flow [2025-03-13 21:52:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:52:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:52:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 75 transitions. [2025-03-13 21:52:58,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2025-03-13 21:52:58,767 INFO L175 Difference]: Start difference. First operand has 231 places, 202 transitions, 4142 flow. Second operand 9 states and 75 transitions. [2025-03-13 21:52:58,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 217 transitions, 4678 flow [2025-03-13 21:52:58,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 217 transitions, 4499 flow, removed 21 selfloop flow, removed 13 redundant places. [2025-03-13 21:52:58,817 INFO L231 Difference]: Finished difference. Result has 219 places, 186 transitions, 3752 flow [2025-03-13 21:52:58,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3752, PETRI_PLACES=219, PETRI_TRANSITIONS=186} [2025-03-13 21:52:58,817 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 195 predicate places. [2025-03-13 21:52:58,817 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 186 transitions, 3752 flow [2025-03-13 21:52:58,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-13 21:52:58,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:58,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:58,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-13 21:52:59,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:59,018 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:59,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:59,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1106498671, now seen corresponding path program 24 times [2025-03-13 21:52:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:59,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998264780] [2025-03-13 21:52:59,019 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:59,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:59,021 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:59,022 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:59,022 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:59,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:59,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:59,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998264780] [2025-03-13 21:52:59,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998264780] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:59,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652079819] [2025-03-13 21:52:59,087 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:52:59,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:59,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:59,088 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:59,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-13 21:52:59,108 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-13 21:52:59,116 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:52:59,116 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-13 21:52:59,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:59,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-13 21:52:59,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:59,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:59,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652079819] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:59,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:59,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-13 21:52:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384426106] [2025-03-13 21:52:59,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:59,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-13 21:52:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:59,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-13 21:52:59,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2025-03-13 21:52:59,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:59,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 186 transitions, 3752 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:59,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:59,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:59,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:52:59,603 INFO L124 PetriNetUnfolderBase]: 545/1185 cut-off events. [2025-03-13 21:52:59,603 INFO L125 PetriNetUnfolderBase]: For 17786/17786 co-relation queries the response was YES. [2025-03-13 21:52:59,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 1185 events. 545/1185 cut-off events. For 17786/17786 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7038 event pairs, 37 based on Foata normal form. 7/1192 useless extension candidates. Maximal degree in co-relation 7463. Up to 307 conditions per place. [2025-03-13 21:52:59,609 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 92 selfloop transitions, 73 changer transitions 45/211 dead transitions. [2025-03-13 21:52:59,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 211 transitions, 4335 flow [2025-03-13 21:52:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-13 21:52:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-13 21:52:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 107 transitions. [2025-03-13 21:52:59,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2025-03-13 21:52:59,610 INFO L175 Difference]: Start difference. First operand has 219 places, 186 transitions, 3752 flow. Second operand 15 states and 107 transitions. [2025-03-13 21:52:59,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 211 transitions, 4335 flow [2025-03-13 21:52:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 211 transitions, 3961 flow, removed 21 selfloop flow, removed 13 redundant places. [2025-03-13 21:52:59,669 INFO L231 Difference]: Finished difference. Result has 217 places, 153 transitions, 2892 flow [2025-03-13 21:52:59,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2892, PETRI_PLACES=217, PETRI_TRANSITIONS=153} [2025-03-13 21:52:59,670 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 193 predicate places. [2025-03-13 21:52:59,670 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 153 transitions, 2892 flow [2025-03-13 21:52:59,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:52:59,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:52:59,670 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:52:59,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-13 21:52:59,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2025-03-13 21:52:59,871 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:52:59,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:52:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash 269204573, now seen corresponding path program 25 times [2025-03-13 21:52:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:52:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319520713] [2025-03-13 21:52:59,871 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:59,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:52:59,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:52:59,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:52:59,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:59,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:59,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:52:59,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319520713] [2025-03-13 21:52:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319520713] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:52:59,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408955217] [2025-03-13 21:52:59,894 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:52:59,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:52:59,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:52:59,896 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:52:59,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-13 21:52:59,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:52:59,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:52:59,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:52:59,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:52:59,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-13 21:52:59,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:52:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:59,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:52:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:52:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408955217] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:52:59,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:52:59,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-03-13 21:52:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483806173] [2025-03-13 21:52:59,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:52:59,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-13 21:52:59,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:52:59,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-13 21:52:59,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-13 21:52:59,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:52:59,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 153 transitions, 2892 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 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) [2025-03-13 21:52:59,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:52:59,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:52:59,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:53:00,125 INFO L124 PetriNetUnfolderBase]: 497/1045 cut-off events. [2025-03-13 21:53:00,125 INFO L125 PetriNetUnfolderBase]: For 13737/13737 co-relation queries the response was YES. [2025-03-13 21:53:00,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6520 conditions, 1045 events. 497/1045 cut-off events. For 13737/13737 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5864 event pairs, 113 based on Foata normal form. 6/1051 useless extension candidates. Maximal degree in co-relation 6466. Up to 458 conditions per place. [2025-03-13 21:53:00,130 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 145 selfloop transitions, 54 changer transitions 0/200 dead transitions. [2025-03-13 21:53:00,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 200 transitions, 3731 flow [2025-03-13 21:53:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-13 21:53:00,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-13 21:53:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 113 transitions. [2025-03-13 21:53:00,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36688311688311687 [2025-03-13 21:53:00,131 INFO L175 Difference]: Start difference. First operand has 217 places, 153 transitions, 2892 flow. Second operand 14 states and 113 transitions. [2025-03-13 21:53:00,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 200 transitions, 3731 flow [2025-03-13 21:53:00,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 200 transitions, 3443 flow, removed 26 selfloop flow, removed 18 redundant places. [2025-03-13 21:53:00,155 INFO L231 Difference]: Finished difference. Result has 187 places, 164 transitions, 2924 flow [2025-03-13 21:53:00,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2924, PETRI_PLACES=187, PETRI_TRANSITIONS=164} [2025-03-13 21:53:00,155 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 163 predicate places. [2025-03-13 21:53:00,155 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 164 transitions, 2924 flow [2025-03-13 21:53:00,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 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) [2025-03-13 21:53:00,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:53:00,155 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:53:00,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-13 21:53:00,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:00,356 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:53:00,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:53:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1437270720, now seen corresponding path program 26 times [2025-03-13 21:53:00,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:53:00,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507880692] [2025-03-13 21:53:00,356 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:53:00,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:53:00,358 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-13 21:53:00,360 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:53:00,360 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:53:00,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:00,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:53:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507880692] [2025-03-13 21:53:00,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507880692] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:53:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196801978] [2025-03-13 21:53:00,383 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:53:00,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:00,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:53:00,385 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:53:00,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-13 21:53:00,404 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-13 21:53:00,411 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:53:00,411 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:53:00,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:00,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-13 21:53:00,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:53:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:00,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:53:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196801978] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:53:00,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:53:00,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-03-13 21:53:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510646057] [2025-03-13 21:53:00,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:53:00,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-13 21:53:00,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:53:00,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-13 21:53:00,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-13 21:53:00,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:53:00,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 164 transitions, 2924 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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) [2025-03-13 21:53:00,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:53:00,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:53:00,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:53:00,597 INFO L124 PetriNetUnfolderBase]: 442/941 cut-off events. [2025-03-13 21:53:00,598 INFO L125 PetriNetUnfolderBase]: For 12254/12254 co-relation queries the response was YES. [2025-03-13 21:53:00,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5959 conditions, 941 events. 442/941 cut-off events. For 12254/12254 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5154 event pairs, 88 based on Foata normal form. 30/971 useless extension candidates. Maximal degree in co-relation 5907. Up to 526 conditions per place. [2025-03-13 21:53:00,602 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 116 selfloop transitions, 46 changer transitions 10/173 dead transitions. [2025-03-13 21:53:00,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 173 transitions, 3276 flow [2025-03-13 21:53:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:53:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:53:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 73 transitions. [2025-03-13 21:53:00,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2025-03-13 21:53:00,603 INFO L175 Difference]: Start difference. First operand has 187 places, 164 transitions, 2924 flow. Second operand 9 states and 73 transitions. [2025-03-13 21:53:00,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 173 transitions, 3276 flow [2025-03-13 21:53:00,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 173 transitions, 3118 flow, removed 32 selfloop flow, removed 7 redundant places. [2025-03-13 21:53:00,628 INFO L231 Difference]: Finished difference. Result has 187 places, 152 transitions, 2613 flow [2025-03-13 21:53:00,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2613, PETRI_PLACES=187, PETRI_TRANSITIONS=152} [2025-03-13 21:53:00,628 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 163 predicate places. [2025-03-13 21:53:00,628 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 152 transitions, 2613 flow [2025-03-13 21:53:00,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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) [2025-03-13 21:53:00,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:53:00,628 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:53:00,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-03-13 21:53:00,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:00,829 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:53:00,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:53:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash -125384920, now seen corresponding path program 27 times [2025-03-13 21:53:00,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:53:00,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807930745] [2025-03-13 21:53:00,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:53:00,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:53:00,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-03-13 21:53:00,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:53:00,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:53:00,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:00,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:53:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807930745] [2025-03-13 21:53:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807930745] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:53:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684858386] [2025-03-13 21:53:00,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:53:00,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:00,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:53:00,860 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:53:00,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-13 21:53:00,879 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-03-13 21:53:00,886 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:53:00,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-13 21:53:00,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:00,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-13 21:53:00,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:53:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:00,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:53:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:00,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684858386] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:53:00,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:53:00,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2025-03-13 21:53:00,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599675953] [2025-03-13 21:53:00,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:53:00,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-13 21:53:00,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:53:00,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-13 21:53:00,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-13 21:53:00,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:53:00,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 152 transitions, 2613 flow. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:53:00,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:53:00,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:53:00,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:53:01,128 INFO L124 PetriNetUnfolderBase]: 403/836 cut-off events. [2025-03-13 21:53:01,128 INFO L125 PetriNetUnfolderBase]: For 11196/11196 co-relation queries the response was YES. [2025-03-13 21:53:01,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 836 events. 403/836 cut-off events. For 11196/11196 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4240 event pairs, 113 based on Foata normal form. 21/857 useless extension candidates. Maximal degree in co-relation 5383. Up to 359 conditions per place. [2025-03-13 21:53:01,132 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 131 selfloop transitions, 50 changer transitions 13/195 dead transitions. [2025-03-13 21:53:01,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 195 transitions, 3402 flow [2025-03-13 21:53:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-13 21:53:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-13 21:53:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 124 transitions. [2025-03-13 21:53:01,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2025-03-13 21:53:01,132 INFO L175 Difference]: Start difference. First operand has 187 places, 152 transitions, 2613 flow. Second operand 14 states and 124 transitions. [2025-03-13 21:53:01,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 195 transitions, 3402 flow [2025-03-13 21:53:01,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 195 transitions, 3200 flow, removed 15 selfloop flow, removed 11 redundant places. [2025-03-13 21:53:01,154 INFO L231 Difference]: Finished difference. Result has 191 places, 148 transitions, 2518 flow [2025-03-13 21:53:01,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2272, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2518, PETRI_PLACES=191, PETRI_TRANSITIONS=148} [2025-03-13 21:53:01,155 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 167 predicate places. [2025-03-13 21:53:01,155 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 148 transitions, 2518 flow [2025-03-13 21:53:01,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:53:01,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:53:01,155 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:53:01,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-13 21:53:01,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2025-03-13 21:53:01,356 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:53:01,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:53:01,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1015574638, now seen corresponding path program 28 times [2025-03-13 21:53:01,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:53:01,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023569483] [2025-03-13 21:53:01,357 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:53:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:53:01,358 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-13 21:53:01,360 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:01,360 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:53:01,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:01,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:53:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023569483] [2025-03-13 21:53:01,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023569483] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:53:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357571240] [2025-03-13 21:53:01,435 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:53:01,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:01,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:53:01,437 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:53:01,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-13 21:53:01,456 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-13 21:53:01,463 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:01,463 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:53:01,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:01,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-13 21:53:01,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:53:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:01,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:53:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:01,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357571240] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:53:01,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:53:01,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2025-03-13 21:53:01,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868348521] [2025-03-13 21:53:01,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:53:01,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-13 21:53:01,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:53:01,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-13 21:53:01,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2025-03-13 21:53:01,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:53:01,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 148 transitions, 2518 flow. Second operand has 30 states, 30 states have (on average 4.5) internal successors, (135), 30 states have internal predecessors, (135), 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) [2025-03-13 21:53:01,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:53:01,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:53:01,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:53:02,095 INFO L124 PetriNetUnfolderBase]: 431/883 cut-off events. [2025-03-13 21:53:02,095 INFO L125 PetriNetUnfolderBase]: For 10919/10919 co-relation queries the response was YES. [2025-03-13 21:53:02,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 883 events. 431/883 cut-off events. For 10919/10919 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4524 event pairs, 12 based on Foata normal form. 4/887 useless extension candidates. Maximal degree in co-relation 5488. Up to 187 conditions per place. [2025-03-13 21:53:02,099 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 54 selfloop transitions, 32 changer transitions 104/191 dead transitions. [2025-03-13 21:53:02,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 191 transitions, 3243 flow [2025-03-13 21:53:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-13 21:53:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-13 21:53:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 110 transitions. [2025-03-13 21:53:02,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2025-03-13 21:53:02,100 INFO L175 Difference]: Start difference. First operand has 191 places, 148 transitions, 2518 flow. Second operand 14 states and 110 transitions. [2025-03-13 21:53:02,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 191 transitions, 3243 flow [2025-03-13 21:53:02,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 191 transitions, 3173 flow, removed 25 selfloop flow, removed 4 redundant places. [2025-03-13 21:53:02,125 INFO L231 Difference]: Finished difference. Result has 203 places, 76 transitions, 1302 flow [2025-03-13 21:53:02,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1302, PETRI_PLACES=203, PETRI_TRANSITIONS=76} [2025-03-13 21:53:02,126 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 179 predicate places. [2025-03-13 21:53:02,126 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 76 transitions, 1302 flow [2025-03-13 21:53:02,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.5) internal successors, (135), 30 states have internal predecessors, (135), 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) [2025-03-13 21:53:02,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:53:02,126 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:53:02,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-13 21:53:02,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:02,327 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:53:02,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:53:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1946496532, now seen corresponding path program 29 times [2025-03-13 21:53:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:53:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418995464] [2025-03-13 21:53:02,327 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:53:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:53:02,329 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-03-13 21:53:02,331 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:02,331 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-13 21:53:02,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-13 21:53:02,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:53:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418995464] [2025-03-13 21:53:02,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418995464] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:53:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190340742] [2025-03-13 21:53:02,380 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-13 21:53:02,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:02,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:53:02,381 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:53:02,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-13 21:53:02,404 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-03-13 21:53:02,414 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:02,414 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-13 21:53:02,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:02,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-13 21:53:02,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:53:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-13 21:53:02,498 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-13 21:53:02,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190340742] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:53:02,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-13 21:53:02,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2025-03-13 21:53:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947734042] [2025-03-13 21:53:02,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:53:02,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-13 21:53:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:53:02,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-13 21:53:02,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-13 21:53:02,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:53:02,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 76 transitions, 1302 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:53:02,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:53:02,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:53:02,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:53:02,576 INFO L124 PetriNetUnfolderBase]: 172/402 cut-off events. [2025-03-13 21:53:02,576 INFO L125 PetriNetUnfolderBase]: For 4609/4609 co-relation queries the response was YES. [2025-03-13 21:53:02,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 402 events. 172/402 cut-off events. For 4609/4609 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1751 event pairs, 24 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 2312. Up to 126 conditions per place. [2025-03-13 21:53:02,578 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 43 selfloop transitions, 21 changer transitions 26/91 dead transitions. [2025-03-13 21:53:02,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 91 transitions, 1516 flow [2025-03-13 21:53:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:53:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:53:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 70 transitions. [2025-03-13 21:53:02,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2025-03-13 21:53:02,579 INFO L175 Difference]: Start difference. First operand has 203 places, 76 transitions, 1302 flow. Second operand 9 states and 70 transitions. [2025-03-13 21:53:02,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 91 transitions, 1516 flow [2025-03-13 21:53:02,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 91 transitions, 1126 flow, removed 17 selfloop flow, removed 39 redundant places. [2025-03-13 21:53:02,587 INFO L231 Difference]: Finished difference. Result has 146 places, 58 transitions, 720 flow [2025-03-13 21:53:02,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=720, PETRI_PLACES=146, PETRI_TRANSITIONS=58} [2025-03-13 21:53:02,587 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 122 predicate places. [2025-03-13 21:53:02,587 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 58 transitions, 720 flow [2025-03-13 21:53:02,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:53:02,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:53:02,587 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:53:02,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-13 21:53:02,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-03-13 21:53:02,788 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:53:02,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:53:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash 96171156, now seen corresponding path program 30 times [2025-03-13 21:53:02,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:53:02,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295291223] [2025-03-13 21:53:02,789 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:53:02,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:53:02,791 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-03-13 21:53:02,792 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:02,793 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-13 21:53:02,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-13 21:53:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:53:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295291223] [2025-03-13 21:53:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295291223] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:53:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145043660] [2025-03-13 21:53:02,845 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-13 21:53:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:53:02,847 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:53:02,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-13 21:53:02,866 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-03-13 21:53:02,873 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:02,873 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-13 21:53:02,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:02,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-13 21:53:02,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:53:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:02,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:53:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:03,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145043660] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:53:03,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:53:03,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 25 [2025-03-13 21:53:03,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534154639] [2025-03-13 21:53:03,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:53:03,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-13 21:53:03,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:53:03,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-13 21:53:03,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-03-13 21:53:03,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:53:03,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 58 transitions, 720 flow. Second operand has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 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) [2025-03-13 21:53:03,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:53:03,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:53:03,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:53:03,393 INFO L124 PetriNetUnfolderBase]: 106/247 cut-off events. [2025-03-13 21:53:03,393 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2025-03-13 21:53:03,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 247 events. 106/247 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 863 event pairs, 1 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 1241. Up to 59 conditions per place. [2025-03-13 21:53:03,394 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 31 selfloop transitions, 17 changer transitions 32/81 dead transitions. [2025-03-13 21:53:03,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 81 transitions, 932 flow [2025-03-13 21:53:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-13 21:53:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-13 21:53:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 108 transitions. [2025-03-13 21:53:03,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2887700534759358 [2025-03-13 21:53:03,394 INFO L175 Difference]: Start difference. First operand has 146 places, 58 transitions, 720 flow. Second operand 17 states and 108 transitions. [2025-03-13 21:53:03,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 81 transitions, 932 flow [2025-03-13 21:53:03,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 81 transitions, 787 flow, removed 8 selfloop flow, removed 21 redundant places. [2025-03-13 21:53:03,398 INFO L231 Difference]: Finished difference. Result has 128 places, 33 transitions, 299 flow [2025-03-13 21:53:03,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=299, PETRI_PLACES=128, PETRI_TRANSITIONS=33} [2025-03-13 21:53:03,398 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 104 predicate places. [2025-03-13 21:53:03,398 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 33 transitions, 299 flow [2025-03-13 21:53:03,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 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) [2025-03-13 21:53:03,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:53:03,399 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:53:03,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-13 21:53:03,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:03,599 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:53:03,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:53:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash -367822478, now seen corresponding path program 31 times [2025-03-13 21:53:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:53:03,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771125236] [2025-03-13 21:53:03,599 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:53:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:53:03,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-13 21:53:03,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:03,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:53:03,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:03,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:53:03,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771125236] [2025-03-13 21:53:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771125236] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:53:03,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504467890] [2025-03-13 21:53:03,689 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-13 21:53:03,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:03,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:53:03,691 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:53:03,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-13 21:53:03,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-13 21:53:03,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:03,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:53:03,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:03,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-13 21:53:03,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:53:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:03,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:53:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:03,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504467890] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:53:03,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:53:03,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2025-03-13 21:53:03,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534043515] [2025-03-13 21:53:03,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:53:03,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-13 21:53:03,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:53:03,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-13 21:53:03,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2025-03-13 21:53:03,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:53:03,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 33 transitions, 299 flow. Second operand has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 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) [2025-03-13 21:53:03,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:53:03,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:53:03,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:53:04,148 INFO L124 PetriNetUnfolderBase]: 50/123 cut-off events. [2025-03-13 21:53:04,148 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2025-03-13 21:53:04,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 123 events. 50/123 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 291 event pairs, 11 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 548. Up to 30 conditions per place. [2025-03-13 21:53:04,148 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 20 selfloop transitions, 5 changer transitions 29/55 dead transitions. [2025-03-13 21:53:04,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 55 transitions, 485 flow [2025-03-13 21:53:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-13 21:53:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-13 21:53:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 93 transitions. [2025-03-13 21:53:04,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30194805194805197 [2025-03-13 21:53:04,149 INFO L175 Difference]: Start difference. First operand has 128 places, 33 transitions, 299 flow. Second operand 14 states and 93 transitions. [2025-03-13 21:53:04,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 55 transitions, 485 flow [2025-03-13 21:53:04,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 55 transitions, 375 flow, removed 7 selfloop flow, removed 34 redundant places. [2025-03-13 21:53:04,150 INFO L231 Difference]: Finished difference. Result has 90 places, 23 transitions, 139 flow [2025-03-13 21:53:04,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=139, PETRI_PLACES=90, PETRI_TRANSITIONS=23} [2025-03-13 21:53:04,151 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 66 predicate places. [2025-03-13 21:53:04,151 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 23 transitions, 139 flow [2025-03-13 21:53:04,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.407407407407407) internal successors, (119), 27 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) [2025-03-13 21:53:04,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:53:04,151 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:53:04,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-13 21:53:04,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-03-13 21:53:04,352 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-13 21:53:04,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:53:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1089660338, now seen corresponding path program 32 times [2025-03-13 21:53:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:53:04,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681688520] [2025-03-13 21:53:04,352 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:53:04,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:53:04,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-13 21:53:04,355 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:04,355 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:53:04,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:53:04,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681688520] [2025-03-13 21:53:04,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681688520] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:53:04,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466444050] [2025-03-13 21:53:04,433 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:53:04,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:53:04,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:53:04,435 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:53:04,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-13 21:53:04,454 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-13 21:53:04,460 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:53:04,461 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:53:04,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:53:04,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-13 21:53:04,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:53:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:04,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:53:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:53:04,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466444050] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:53:04,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:53:04,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-13 21:53:04,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367102105] [2025-03-13 21:53:04,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:53:04,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-13 21:53:04,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:53:04,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-13 21:53:04,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2025-03-13 21:53:04,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-13 21:53:04,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 23 transitions, 139 flow. Second operand has 28 states, 28 states have (on average 4.321428571428571) internal successors, (121), 28 states have internal predecessors, (121), 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) [2025-03-13 21:53:04,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:53:04,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-13 21:53:04,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:53:04,807 INFO L124 PetriNetUnfolderBase]: 24/61 cut-off events. [2025-03-13 21:53:04,807 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2025-03-13 21:53:04,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 61 events. 24/61 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 226. Up to 21 conditions per place. [2025-03-13 21:53:04,807 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2025-03-13 21:53:04,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 33 transitions, 224 flow [2025-03-13 21:53:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-13 21:53:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-13 21:53:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 73 transitions. [2025-03-13 21:53:04,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25524475524475526 [2025-03-13 21:53:04,808 INFO L175 Difference]: Start difference. First operand has 90 places, 23 transitions, 139 flow. Second operand 13 states and 73 transitions. [2025-03-13 21:53:04,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 33 transitions, 224 flow [2025-03-13 21:53:04,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 33 transitions, 179 flow, removed 7 selfloop flow, removed 15 redundant places. [2025-03-13 21:53:04,809 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2025-03-13 21:53:04,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2025-03-13 21:53:04,809 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 43 predicate places. [2025-03-13 21:53:04,809 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2025-03-13 21:53:04,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.321428571428571) internal successors, (121), 28 states have internal predecessors, (121), 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) [2025-03-13 21:53:04,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-13 21:53:04,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-13 21:53:04,811 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-13 21:53:04,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-13 21:53:05,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-03-13 21:53:05,012 INFO L422 BasicCegarLoop]: Path program histogram: [32, 16, 6, 6] [2025-03-13 21:53:05,014 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-13 21:53:05,014 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-13 21:53:05,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.03 09:53:05 BasicIcfg [2025-03-13 21:53:05,017 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-13 21:53:05,018 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-13 21:53:05,018 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-13 21:53:05,018 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-13 21:53:05,018 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:52:22" (3/4) ... [2025-03-13 21:53:05,020 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-13 21:53:05,021 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-13 21:53:05,022 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-13 21:53:05,024 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2025-03-13 21:53:05,025 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-13 21:53:05,025 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-13 21:53:05,025 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-13 21:53:05,072 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-13 21:53:05,073 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-13 21:53:05,073 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-13 21:53:05,073 INFO L158 Benchmark]: Toolchain (without parser) took 42751.40ms. Allocated memory was 167.8MB in the beginning and 453.0MB in the end (delta: 285.2MB). Free memory was 127.7MB in the beginning and 158.6MB in the end (delta: -31.0MB). Peak memory consumption was 254.9MB. Max. memory is 16.1GB. [2025-03-13 21:53:05,073 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:53:05,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.55ms. Allocated memory is still 167.8MB. Free memory was 127.3MB in the beginning and 116.1MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:53:05,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.76ms. Allocated memory is still 167.8MB. Free memory was 116.1MB in the beginning and 114.9MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:53:05,074 INFO L158 Benchmark]: Boogie Preprocessor took 21.37ms. Allocated memory is still 167.8MB. Free memory was 114.9MB in the beginning and 114.1MB in the end (delta: 816.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:53:05,074 INFO L158 Benchmark]: IcfgBuilder took 301.54ms. Allocated memory is still 167.8MB. Free memory was 113.7MB in the beginning and 93.0MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-13 21:53:05,074 INFO L158 Benchmark]: TraceAbstraction took 42168.49ms. Allocated memory was 167.8MB in the beginning and 453.0MB in the end (delta: 285.2MB). Free memory was 92.1MB in the beginning and 166.8MB in the end (delta: -74.7MB). Peak memory consumption was 213.0MB. Max. memory is 16.1GB. [2025-03-13 21:53:05,074 INFO L158 Benchmark]: Witness Printer took 54.98ms. Allocated memory is still 453.0MB. Free memory was 166.8MB in the beginning and 158.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:53:05,075 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.55ms. Allocated memory is still 167.8MB. Free memory was 127.3MB in the beginning and 116.1MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.76ms. Allocated memory is still 167.8MB. Free memory was 116.1MB in the beginning and 114.9MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.37ms. Allocated memory is still 167.8MB. Free memory was 114.9MB in the beginning and 114.1MB in the end (delta: 816.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 301.54ms. Allocated memory is still 167.8MB. Free memory was 113.7MB in the beginning and 93.0MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 42168.49ms. Allocated memory was 167.8MB in the beginning and 453.0MB in the end (delta: 285.2MB). Free memory was 92.1MB in the beginning and 166.8MB in the end (delta: -74.7MB). Peak memory consumption was 213.0MB. Max. memory is 16.1GB. * Witness Printer took 54.98ms. Allocated memory is still 453.0MB. Free memory was 166.8MB in the beginning and 158.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: 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, 33 locations, 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: 42.1s, OverallIterations: 60, TraceHistogramMax: 2, PathProgramHistogramMax: 32, EmptinessCheckTime: 0.0s, AutomataDifference: 21.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3065 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3008 mSDsluCounter, 605 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 528 mSDsCounter, 646 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22568 IncrementalHoareTripleChecker+Invalid, 23214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 646 mSolverCounterUnsat, 77 mSDtfsCounter, 22568 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2212 GetRequests, 1051 SyntacticMatches, 11 SemanticMatches, 1150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7847 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6665occurred in iteration=48, InterpolantAutomatonStates: 748, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 1838 NumberOfCodeBlocks, 1838 NumberOfCodeBlocksAsserted, 172 NumberOfCheckSat, 2339 ConstructedInterpolants, 0 QuantifiedInterpolants, 12730 SizeOfPredicates, 115 NumberOfNonLiveVariables, 3707 ConjunctsInSsa, 451 ConjunctsInUnsatCore, 131 InterpolantComputations, 33 PerfectInterpolantSequences, 69/316 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! [2025-03-13 21:53:05,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE