./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longest-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 00:55:16,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 00:55:16,887 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 00:55:16,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 00:55:16,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 00:55:16,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 00:55:16,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 00:55:16,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 00:55:16,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 00:55:16,918 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 00:55:16,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 00:55:16,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 00:55:16,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 00:55:16,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 00:55:16,918 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 00:55:16,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 00:55:16,919 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 00:55:16,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 00:55:16,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 00:55:16,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 00:55:16,920 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-jdk21/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 -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2025-02-08 00:55:17,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 00:55:17,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 00:55:17,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 00:55:17,175 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 00:55:17,175 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 00:55:17,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2025-02-08 00:55:18,291 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/455fdb1ee/b934f2254bdb4458b56f792713c7d561/FLAG9c83f66dd [2025-02-08 00:55:18,663 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 00:55:18,664 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2025-02-08 00:55:18,700 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/455fdb1ee/b934f2254bdb4458b56f792713c7d561/FLAG9c83f66dd [2025-02-08 00:55:18,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/455fdb1ee/b934f2254bdb4458b56f792713c7d561 [2025-02-08 00:55:18,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 00:55:18,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 00:55:18,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 00:55:18,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 00:55:18,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 00:55:18,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:55:18" (1/1) ... [2025-02-08 00:55:18,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2e90f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:18, skipping insertion in model container [2025-02-08 00:55:18,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:55:18" (1/1) ... [2025-02-08 00:55:18,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 00:55:19,317 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2025-02-08 00:55:19,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 00:55:19,333 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 00:55:19,377 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2025-02-08 00:55:19,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 00:55:19,407 INFO L204 MainTranslator]: Completed translation [2025-02-08 00:55:19,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19 WrapperNode [2025-02-08 00:55:19,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 00:55:19,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 00:55:19,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 00:55:19,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 00:55:19,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,432 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2025-02-08 00:55:19,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 00:55:19,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 00:55:19,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 00:55:19,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 00:55:19,439 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,452 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]. [2025-02-08 00:55:19,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,455 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 00:55:19,463 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 00:55:19,463 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 00:55:19,463 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 00:55:19,467 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (1/1) ... [2025-02-08 00:55:19,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 00:55:19,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:19,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 00:55:19,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 00:55:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 00:55:19,518 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 00:55:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 00:55:19,518 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 00:55:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 00:55:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 00:55:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 00:55:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 00:55:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 00:55:19,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 00:55:19,519 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 00:55:19,595 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 00:55:19,596 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 00:55:19,690 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 00:55:19,690 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 00:55:19,735 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 00:55:19,736 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 00:55:19,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:55:19 BoogieIcfgContainer [2025-02-08 00:55:19,736 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 00:55:19,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 00:55:19,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 00:55:19,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 00:55:19,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 12:55:18" (1/3) ... [2025-02-08 00:55:19,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f77292c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:55:19, skipping insertion in model container [2025-02-08 00:55:19,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:55:19" (2/3) ... [2025-02-08 00:55:19,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f77292c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:55:19, skipping insertion in model container [2025-02-08 00:55:19,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:55:19" (3/3) ... [2025-02-08 00:55:19,743 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2025-02-08 00:55:19,754 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 00:55:19,755 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-1.i that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-08 00:55:19,755 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 00:55:19,782 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 00:55:19,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2025-02-08 00:55:19,828 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-02-08 00:55:19,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 00:55:19,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-02-08 00:55:19,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2025-02-08 00:55:19,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2025-02-08 00:55:19,848 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 00:55:19,862 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;@6577963c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 00:55:19,862 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 00:55:19,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 00:55:19,868 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-02-08 00:55:19,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 00:55:19,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:19,869 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:19,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:19,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:19,874 INFO L85 PathProgramCache]: Analyzing trace with hash 355335699, now seen corresponding path program 1 times [2025-02-08 00:55:19,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:19,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580614357] [2025-02-08 00:55:19,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:55:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:19,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 00:55:19,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 00:55:19,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:19,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580614357] [2025-02-08 00:55:20,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580614357] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:55:20,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:55:20,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 00:55:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220881759] [2025-02-08 00:55:20,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:55:20,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 00:55:20,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:20,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 00:55:20,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 00:55:20,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:20,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:20,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:20,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:20,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:20,474 INFO L124 PetriNetUnfolderBase]: 321/540 cut-off events. [2025-02-08 00:55:20,474 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 00:55:20,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 540 events. 321/540 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2120 event pairs, 62 based on Foata normal form. 12/535 useless extension candidates. Maximal degree in co-relation 1042. Up to 221 conditions per place. [2025-02-08 00:55:20,478 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2025-02-08 00:55:20,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2025-02-08 00:55:20,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 00:55:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 00:55:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2025-02-08 00:55:20,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-08 00:55:20,492 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2025-02-08 00:55:20,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2025-02-08 00:55:20,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 00:55:20,498 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2025-02-08 00:55:20,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2025-02-08 00:55:20,502 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2025-02-08 00:55:20,502 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2025-02-08 00:55:20,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:20,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:20,503 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:20,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 00:55:20,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:20,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:20,504 INFO L85 PathProgramCache]: Analyzing trace with hash 964778290, now seen corresponding path program 1 times [2025-02-08 00:55:20,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:20,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410386891] [2025-02-08 00:55:20,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:55:20,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:20,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 00:55:20,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 00:55:20,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:20,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:20,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:20,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410386891] [2025-02-08 00:55:20,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410386891] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:55:20,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:55:20,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 00:55:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111121190] [2025-02-08 00:55:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:55:20,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 00:55:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:20,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 00:55:20,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 00:55:20,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:20,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:20,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:20,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:20,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:20,880 INFO L124 PetriNetUnfolderBase]: 382/687 cut-off events. [2025-02-08 00:55:20,881 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-02-08 00:55:20,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1584 conditions, 687 events. 382/687 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2905 event pairs, 65 based on Foata normal form. 27/710 useless extension candidates. Maximal degree in co-relation 1570. Up to 246 conditions per place. [2025-02-08 00:55:20,886 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2025-02-08 00:55:20,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2025-02-08 00:55:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 00:55:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 00:55:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2025-02-08 00:55:20,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-02-08 00:55:20,887 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2025-02-08 00:55:20,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2025-02-08 00:55:20,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-08 00:55:20,890 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2025-02-08 00:55:20,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2025-02-08 00:55:20,891 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2025-02-08 00:55:20,891 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2025-02-08 00:55:20,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:20,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:20,891 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:20,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 00:55:20,892 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:20,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1319887630, now seen corresponding path program 2 times [2025-02-08 00:55:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:20,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271799284] [2025-02-08 00:55:20,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 00:55:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:20,900 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-02-08 00:55:20,904 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 00:55:20,907 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 00:55:20,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:21,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271799284] [2025-02-08 00:55:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271799284] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:55:21,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:55:21,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 00:55:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537682379] [2025-02-08 00:55:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:55:21,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 00:55:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:21,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 00:55:21,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 00:55:21,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:21,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:21,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:21,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:21,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:21,192 INFO L124 PetriNetUnfolderBase]: 328/603 cut-off events. [2025-02-08 00:55:21,192 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-02-08 00:55:21,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 603 events. 328/603 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2509 event pairs, 65 based on Foata normal form. 45/644 useless extension candidates. Maximal degree in co-relation 1711. Up to 234 conditions per place. [2025-02-08 00:55:21,196 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2025-02-08 00:55:21,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2025-02-08 00:55:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 00:55:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 00:55:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2025-02-08 00:55:21,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2025-02-08 00:55:21,197 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2025-02-08 00:55:21,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2025-02-08 00:55:21,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 00:55:21,201 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2025-02-08 00:55:21,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2025-02-08 00:55:21,201 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2025-02-08 00:55:21,201 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2025-02-08 00:55:21,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:21,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:21,202 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:21,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 00:55:21,203 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:21,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash -443489336, now seen corresponding path program 1 times [2025-02-08 00:55:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:21,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602006950] [2025-02-08 00:55:21,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:55:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:21,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 00:55:21,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 00:55:21,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:21,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:21,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602006950] [2025-02-08 00:55:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602006950] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:55:21,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:55:21,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 00:55:21,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879389845] [2025-02-08 00:55:21,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:55:21,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 00:55:21,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:21,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 00:55:21,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 00:55:21,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:21,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2025-02-08 00:55:21,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:21,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:21,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:21,534 INFO L124 PetriNetUnfolderBase]: 337/612 cut-off events. [2025-02-08 00:55:21,534 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2025-02-08 00:55:21,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1937 conditions, 612 events. 337/612 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2541 event pairs, 74 based on Foata normal form. 18/626 useless extension candidates. Maximal degree in co-relation 1911. Up to 237 conditions per place. [2025-02-08 00:55:21,538 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2025-02-08 00:55:21,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2025-02-08 00:55:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 00:55:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 00:55:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2025-02-08 00:55:21,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-02-08 00:55:21,539 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2025-02-08 00:55:21,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2025-02-08 00:55:21,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 540 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-02-08 00:55:21,545 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2025-02-08 00:55:21,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2025-02-08 00:55:21,545 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2025-02-08 00:55:21,546 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2025-02-08 00:55:21,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2025-02-08 00:55:21,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:21,546 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:21,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 00:55:21,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:21,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1513461300, now seen corresponding path program 2 times [2025-02-08 00:55:21,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:21,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980485049] [2025-02-08 00:55:21,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 00:55:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:21,553 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-02-08 00:55:21,557 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 00:55:21,558 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 00:55:21,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:21,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:21,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980485049] [2025-02-08 00:55:21,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980485049] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:55:21,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:55:21,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 00:55:21,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670934070] [2025-02-08 00:55:21,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:55:21,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 00:55:21,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:21,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 00:55:21,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 00:55:21,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:21,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2025-02-08 00:55:21,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:21,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:21,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:21,829 INFO L124 PetriNetUnfolderBase]: 409/742 cut-off events. [2025-02-08 00:55:21,829 INFO L125 PetriNetUnfolderBase]: For 2292/2292 co-relation queries the response was YES. [2025-02-08 00:55:21,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 742 events. 409/742 cut-off events. For 2292/2292 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3153 event pairs, 71 based on Foata normal form. 27/764 useless extension candidates. Maximal degree in co-relation 2412. Up to 220 conditions per place. [2025-02-08 00:55:21,832 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 18 changer transitions 28/92 dead transitions. [2025-02-08 00:55:21,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 685 flow [2025-02-08 00:55:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 00:55:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 00:55:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2025-02-08 00:55:21,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-02-08 00:55:21,833 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 10 states and 125 transitions. [2025-02-08 00:55:21,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 685 flow [2025-02-08 00:55:21,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 633 flow, removed 20 selfloop flow, removed 4 redundant places. [2025-02-08 00:55:21,859 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 347 flow [2025-02-08 00:55:21,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=347, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2025-02-08 00:55:21,860 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 37 predicate places. [2025-02-08 00:55:21,860 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 347 flow [2025-02-08 00:55:21,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2025-02-08 00:55:21,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:21,860 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:21,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 00:55:21,860 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:21,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1437571864, now seen corresponding path program 1 times [2025-02-08 00:55:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498536277] [2025-02-08 00:55:21,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:55:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:21,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 00:55:21,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 00:55:21,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:21,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:22,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498536277] [2025-02-08 00:55:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498536277] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:55:22,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:55:22,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 00:55:22,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753829553] [2025-02-08 00:55:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:55:22,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 00:55:22,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:22,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 00:55:22,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 00:55:22,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:22,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 347 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:22,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:22,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:22,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:22,325 INFO L124 PetriNetUnfolderBase]: 436/793 cut-off events. [2025-02-08 00:55:22,329 INFO L125 PetriNetUnfolderBase]: For 3583/3583 co-relation queries the response was YES. [2025-02-08 00:55:22,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 793 events. 436/793 cut-off events. For 3583/3583 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3439 event pairs, 59 based on Foata normal form. 18/806 useless extension candidates. Maximal degree in co-relation 2878. Up to 154 conditions per place. [2025-02-08 00:55:22,338 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 24 changer transitions 23/94 dead transitions. [2025-02-08 00:55:22,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 795 flow [2025-02-08 00:55:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 00:55:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 00:55:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2025-02-08 00:55:22,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-02-08 00:55:22,340 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 347 flow. Second operand 10 states and 125 transitions. [2025-02-08 00:55:22,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 795 flow [2025-02-08 00:55:22,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 751 flow, removed 14 selfloop flow, removed 5 redundant places. [2025-02-08 00:55:22,355 INFO L231 Difference]: Finished difference. Result has 68 places, 46 transitions, 435 flow [2025-02-08 00:55:22,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=435, PETRI_PLACES=68, PETRI_TRANSITIONS=46} [2025-02-08 00:55:22,356 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2025-02-08 00:55:22,356 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 46 transitions, 435 flow [2025-02-08 00:55:22,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:22,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:22,361 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:22,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 00:55:22,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:22,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash -245987901, now seen corresponding path program 1 times [2025-02-08 00:55:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323638815] [2025-02-08 00:55:22,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:55:22,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:22,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 00:55:22,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 00:55:22,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:22,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:22,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323638815] [2025-02-08 00:55:22,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323638815] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:55:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098336187] [2025-02-08 00:55:22,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:55:22,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:22,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:22,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:55:22,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 00:55:22,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 00:55:22,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 00:55:22,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:22,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:22,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 00:55:22,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:55:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:22,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:55:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098336187] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:55:22,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:55:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-08 00:55:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199465872] [2025-02-08 00:55:22,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:55:22,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 00:55:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:22,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 00:55:22,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-02-08 00:55:22,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:22,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 46 transitions, 435 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:22,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:22,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:22,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:23,189 INFO L124 PetriNetUnfolderBase]: 580/1068 cut-off events. [2025-02-08 00:55:23,189 INFO L125 PetriNetUnfolderBase]: For 8203/8203 co-relation queries the response was YES. [2025-02-08 00:55:23,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4410 conditions, 1068 events. 580/1068 cut-off events. For 8203/8203 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4469 event pairs, 149 based on Foata normal form. 63/1127 useless extension candidates. Maximal degree in co-relation 4377. Up to 504 conditions per place. [2025-02-08 00:55:23,196 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 65 selfloop transitions, 17 changer transitions 67/152 dead transitions. [2025-02-08 00:55:23,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 152 transitions, 1435 flow [2025-02-08 00:55:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 00:55:23,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 00:55:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2025-02-08 00:55:23,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2025-02-08 00:55:23,198 INFO L175 Difference]: Start difference. First operand has 68 places, 46 transitions, 435 flow. Second operand 19 states and 231 transitions. [2025-02-08 00:55:23,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 152 transitions, 1435 flow [2025-02-08 00:55:23,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 152 transitions, 1343 flow, removed 30 selfloop flow, removed 7 redundant places. [2025-02-08 00:55:23,212 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 559 flow [2025-02-08 00:55:23,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=559, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2025-02-08 00:55:23,212 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2025-02-08 00:55:23,212 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 559 flow [2025-02-08 00:55:23,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:23,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:23,213 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:23,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 00:55:23,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:23,417 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:23,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1752855453, now seen corresponding path program 2 times [2025-02-08 00:55:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379058107] [2025-02-08 00:55:23,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 00:55:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:23,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-02-08 00:55:23,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 00:55:23,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 00:55:23,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:23,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:23,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379058107] [2025-02-08 00:55:23,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379058107] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:55:23,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:55:23,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 00:55:23,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513660680] [2025-02-08 00:55:23,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:55:23,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 00:55:23,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:23,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 00:55:23,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-08 00:55:23,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:23,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 52 transitions, 559 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:23,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:23,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:23,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:23,817 INFO L124 PetriNetUnfolderBase]: 661/1235 cut-off events. [2025-02-08 00:55:23,817 INFO L125 PetriNetUnfolderBase]: For 21079/21079 co-relation queries the response was YES. [2025-02-08 00:55:23,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6357 conditions, 1235 events. 661/1235 cut-off events. For 21079/21079 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5748 event pairs, 144 based on Foata normal form. 27/1258 useless extension candidates. Maximal degree in co-relation 6313. Up to 501 conditions per place. [2025-02-08 00:55:23,825 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 77 selfloop transitions, 23 changer transitions 31/134 dead transitions. [2025-02-08 00:55:23,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 134 transitions, 1579 flow [2025-02-08 00:55:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 00:55:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 00:55:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 187 transitions. [2025-02-08 00:55:23,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2025-02-08 00:55:23,827 INFO L175 Difference]: Start difference. First operand has 90 places, 52 transitions, 559 flow. Second operand 15 states and 187 transitions. [2025-02-08 00:55:23,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 134 transitions, 1579 flow [2025-02-08 00:55:23,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 1247 flow, removed 155 selfloop flow, removed 12 redundant places. [2025-02-08 00:55:23,845 INFO L231 Difference]: Finished difference. Result has 92 places, 58 transitions, 617 flow [2025-02-08 00:55:23,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=617, PETRI_PLACES=92, PETRI_TRANSITIONS=58} [2025-02-08 00:55:23,846 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2025-02-08 00:55:23,847 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 58 transitions, 617 flow [2025-02-08 00:55:23,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:23,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:23,848 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:23,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 00:55:23,848 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:23,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash 419544819, now seen corresponding path program 3 times [2025-02-08 00:55:23,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:23,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513653862] [2025-02-08 00:55:23,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 00:55:23,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:23,855 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 1 equivalence classes. [2025-02-08 00:55:23,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 00:55:23,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 00:55:23,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:23,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513653862] [2025-02-08 00:55:23,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513653862] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 00:55:23,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 00:55:23,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 00:55:23,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432037969] [2025-02-08 00:55:23,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 00:55:23,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 00:55:23,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:23,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 00:55:23,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 00:55:23,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:23,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 58 transitions, 617 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:23,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:23,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:23,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:24,199 INFO L124 PetriNetUnfolderBase]: 598/1127 cut-off events. [2025-02-08 00:55:24,200 INFO L125 PetriNetUnfolderBase]: For 15552/15552 co-relation queries the response was YES. [2025-02-08 00:55:24,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5381 conditions, 1127 events. 598/1127 cut-off events. For 15552/15552 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5166 event pairs, 150 based on Foata normal form. 45/1168 useless extension candidates. Maximal degree in co-relation 5337. Up to 471 conditions per place. [2025-02-08 00:55:24,208 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 65 selfloop transitions, 24 changer transitions 39/131 dead transitions. [2025-02-08 00:55:24,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 1473 flow [2025-02-08 00:55:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 00:55:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 00:55:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 173 transitions. [2025-02-08 00:55:24,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2025-02-08 00:55:24,209 INFO L175 Difference]: Start difference. First operand has 92 places, 58 transitions, 617 flow. Second operand 14 states and 173 transitions. [2025-02-08 00:55:24,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 1473 flow [2025-02-08 00:55:24,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 1293 flow, removed 74 selfloop flow, removed 10 redundant places. [2025-02-08 00:55:24,227 INFO L231 Difference]: Finished difference. Result has 97 places, 59 transitions, 614 flow [2025-02-08 00:55:24,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=614, PETRI_PLACES=97, PETRI_TRANSITIONS=59} [2025-02-08 00:55:24,227 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2025-02-08 00:55:24,227 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 59 transitions, 614 flow [2025-02-08 00:55:24,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:24,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:24,228 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:24,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 00:55:24,228 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:24,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash 286114721, now seen corresponding path program 1 times [2025-02-08 00:55:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863800909] [2025-02-08 00:55:24,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:55:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:24,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 00:55:24,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 00:55:24,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:24,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:24,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863800909] [2025-02-08 00:55:24,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863800909] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:55:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903287792] [2025-02-08 00:55:24,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 00:55:24,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:24,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:24,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:55:24,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 00:55:24,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 00:55:24,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 00:55:24,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:24,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:24,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 00:55:24,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:55:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:24,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:55:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903287792] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:55:24,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:55:24,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-02-08 00:55:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201524068] [2025-02-08 00:55:24,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:55:24,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 00:55:24,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:24,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 00:55:24,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-02-08 00:55:24,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:24,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 59 transitions, 614 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:24,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:24,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:24,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:25,490 INFO L124 PetriNetUnfolderBase]: 841/1575 cut-off events. [2025-02-08 00:55:25,491 INFO L125 PetriNetUnfolderBase]: For 27476/27476 co-relation queries the response was YES. [2025-02-08 00:55:25,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8184 conditions, 1575 events. 841/1575 cut-off events. For 27476/27476 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7782 event pairs, 36 based on Foata normal form. 72/1643 useless extension candidates. Maximal degree in co-relation 8138. Up to 255 conditions per place. [2025-02-08 00:55:25,500 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 79 selfloop transitions, 55 changer transitions 88/225 dead transitions. [2025-02-08 00:55:25,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 225 transitions, 2634 flow [2025-02-08 00:55:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 00:55:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-08 00:55:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 341 transitions. [2025-02-08 00:55:25,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5074404761904762 [2025-02-08 00:55:25,503 INFO L175 Difference]: Start difference. First operand has 97 places, 59 transitions, 614 flow. Second operand 28 states and 341 transitions. [2025-02-08 00:55:25,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 225 transitions, 2634 flow [2025-02-08 00:55:25,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 225 transitions, 2456 flow, removed 67 selfloop flow, removed 12 redundant places. [2025-02-08 00:55:25,529 INFO L231 Difference]: Finished difference. Result has 127 places, 76 transitions, 1102 flow [2025-02-08 00:55:25,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1102, PETRI_PLACES=127, PETRI_TRANSITIONS=76} [2025-02-08 00:55:25,530 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 101 predicate places. [2025-02-08 00:55:25,530 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 76 transitions, 1102 flow [2025-02-08 00:55:25,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:25,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:25,530 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:25,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 00:55:25,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:25,734 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:25,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:25,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1629126176, now seen corresponding path program 2 times [2025-02-08 00:55:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:25,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013683989] [2025-02-08 00:55:25,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 00:55:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:25,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 00:55:25,743 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 00:55:25,743 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 00:55:25,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:25,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:25,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013683989] [2025-02-08 00:55:25,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013683989] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:55:25,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718213597] [2025-02-08 00:55:25,873 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 00:55:25,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:25,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:25,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:55:25,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 00:55:25,908 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 00:55:25,929 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 00:55:25,929 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 00:55:25,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:25,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 00:55:25,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:55:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:25,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:55:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:26,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718213597] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:55:26,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:55:26,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-08 00:55:26,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745385124] [2025-02-08 00:55:26,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:55:26,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 00:55:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:26,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 00:55:26,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2025-02-08 00:55:26,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:26,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 76 transitions, 1102 flow. Second operand has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 17 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:26,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:26,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:26,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:26,881 INFO L124 PetriNetUnfolderBase]: 1417/2670 cut-off events. [2025-02-08 00:55:26,881 INFO L125 PetriNetUnfolderBase]: For 116610/116610 co-relation queries the response was YES. [2025-02-08 00:55:26,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19112 conditions, 2670 events. 1417/2670 cut-off events. For 116610/116610 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 14801 event pairs, 54 based on Foata normal form. 90/2756 useless extension candidates. Maximal degree in co-relation 19051. Up to 534 conditions per place. [2025-02-08 00:55:26,899 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 120 selfloop transitions, 91 changer transitions 110/324 dead transitions. [2025-02-08 00:55:26,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 324 transitions, 5645 flow [2025-02-08 00:55:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 00:55:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-08 00:55:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 456 transitions. [2025-02-08 00:55:26,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2025-02-08 00:55:26,901 INFO L175 Difference]: Start difference. First operand has 127 places, 76 transitions, 1102 flow. Second operand 37 states and 456 transitions. [2025-02-08 00:55:26,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 324 transitions, 5645 flow [2025-02-08 00:55:26,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 324 transitions, 4418 flow, removed 583 selfloop flow, removed 17 redundant places. [2025-02-08 00:55:26,975 INFO L231 Difference]: Finished difference. Result has 163 places, 116 transitions, 1998 flow [2025-02-08 00:55:26,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1998, PETRI_PLACES=163, PETRI_TRANSITIONS=116} [2025-02-08 00:55:26,975 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 137 predicate places. [2025-02-08 00:55:26,975 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 116 transitions, 1998 flow [2025-02-08 00:55:26,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 17 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:26,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:26,976 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:26,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 00:55:27,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:27,180 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:27,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash 728336222, now seen corresponding path program 3 times [2025-02-08 00:55:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982221968] [2025-02-08 00:55:27,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 00:55:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:27,185 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-02-08 00:55:27,188 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 00:55:27,188 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 00:55:27,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:27,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982221968] [2025-02-08 00:55:27,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982221968] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:55:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002838322] [2025-02-08 00:55:27,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 00:55:27,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:27,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:55:27,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 00:55:27,307 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-02-08 00:55:27,316 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 00:55:27,316 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 00:55:27,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:27,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 00:55:27,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:55:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:27,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:55:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002838322] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:55:27,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:55:27,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-02-08 00:55:27,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179405496] [2025-02-08 00:55:27,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:55:27,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 00:55:27,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:27,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 00:55:27,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2025-02-08 00:55:27,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:27,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 116 transitions, 1998 flow. Second operand has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:27,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:27,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:27,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:28,764 INFO L124 PetriNetUnfolderBase]: 1822/3487 cut-off events. [2025-02-08 00:55:28,764 INFO L125 PetriNetUnfolderBase]: For 282215/282215 co-relation queries the response was YES. [2025-02-08 00:55:28,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29136 conditions, 3487 events. 1822/3487 cut-off events. For 282215/282215 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 18988 event pairs, 44 based on Foata normal form. 135/3618 useless extension candidates. Maximal degree in co-relation 29059. Up to 726 conditions per place. [2025-02-08 00:55:28,797 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 132 selfloop transitions, 126 changer transitions 134/395 dead transitions. [2025-02-08 00:55:28,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 395 transitions, 8383 flow [2025-02-08 00:55:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-08 00:55:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2025-02-08 00:55:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 515 transitions. [2025-02-08 00:55:28,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5109126984126984 [2025-02-08 00:55:28,800 INFO L175 Difference]: Start difference. First operand has 163 places, 116 transitions, 1998 flow. Second operand 42 states and 515 transitions. [2025-02-08 00:55:28,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 395 transitions, 8383 flow [2025-02-08 00:55:29,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 395 transitions, 6255 flow, removed 1040 selfloop flow, removed 22 redundant places. [2025-02-08 00:55:29,023 INFO L231 Difference]: Finished difference. Result has 197 places, 151 transitions, 2785 flow [2025-02-08 00:55:29,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2785, PETRI_PLACES=197, PETRI_TRANSITIONS=151} [2025-02-08 00:55:29,025 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 171 predicate places. [2025-02-08 00:55:29,025 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 151 transitions, 2785 flow [2025-02-08 00:55:29,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:29,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:29,025 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:29,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 00:55:29,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 00:55:29,229 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:29,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2068569921, now seen corresponding path program 4 times [2025-02-08 00:55:29,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:29,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206626783] [2025-02-08 00:55:29,230 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 00:55:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:29,233 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-02-08 00:55:29,240 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 00:55:29,240 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 00:55:29,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:29,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:29,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206626783] [2025-02-08 00:55:29,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206626783] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:55:29,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717471135] [2025-02-08 00:55:29,517 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 00:55:29,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:29,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:55:29,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 00:55:29,558 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-02-08 00:55:29,570 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 00:55:29,570 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 00:55:29,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:29,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 00:55:29,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:55:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:29,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:55:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 00:55:29,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717471135] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:55:29,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:55:29,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2025-02-08 00:55:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092631339] [2025-02-08 00:55:29,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:55:29,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-08 00:55:29,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:29,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-08 00:55:29,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 00:55:29,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:29,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 151 transitions, 2785 flow. Second operand has 34 states, 34 states have (on average 7.029411764705882) internal successors, (239), 34 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:29,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:29,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:29,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:32,228 INFO L124 PetriNetUnfolderBase]: 2731/5092 cut-off events. [2025-02-08 00:55:32,228 INFO L125 PetriNetUnfolderBase]: For 506139/506139 co-relation queries the response was YES. [2025-02-08 00:55:32,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46592 conditions, 5092 events. 2731/5092 cut-off events. For 506139/506139 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 25550 event pairs, 65 based on Foata normal form. 135/5222 useless extension candidates. Maximal degree in co-relation 46503. Up to 1107 conditions per place. [2025-02-08 00:55:32,270 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 214 selfloop transitions, 181 changer transitions 206/604 dead transitions. [2025-02-08 00:55:32,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 604 transitions, 13947 flow [2025-02-08 00:55:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-02-08 00:55:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2025-02-08 00:55:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 846 transitions. [2025-02-08 00:55:32,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2025-02-08 00:55:32,273 INFO L175 Difference]: Start difference. First operand has 197 places, 151 transitions, 2785 flow. Second operand 69 states and 846 transitions. [2025-02-08 00:55:32,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 604 transitions, 13947 flow [2025-02-08 00:55:32,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 604 transitions, 11900 flow, removed 1008 selfloop flow, removed 16 redundant places. [2025-02-08 00:55:32,792 INFO L231 Difference]: Finished difference. Result has 282 places, 210 transitions, 4849 flow [2025-02-08 00:55:32,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=4849, PETRI_PLACES=282, PETRI_TRANSITIONS=210} [2025-02-08 00:55:32,793 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 256 predicate places. [2025-02-08 00:55:32,793 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 210 transitions, 4849 flow [2025-02-08 00:55:32,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.029411764705882) internal successors, (239), 34 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:32,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:32,794 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:32,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 00:55:32,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 00:55:32,995 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:32,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:32,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1984624167, now seen corresponding path program 5 times [2025-02-08 00:55:32,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:32,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076437954] [2025-02-08 00:55:32,996 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 00:55:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:33,002 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 87 statements into 12 equivalence classes. [2025-02-08 00:55:33,016 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:55:33,019 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-02-08 00:55:33,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 419 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:55:33,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076437954] [2025-02-08 00:55:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076437954] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:55:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686507716] [2025-02-08 00:55:33,588 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 00:55:33,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:33,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:33,594 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:55:33,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 00:55:33,652 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 87 statements into 12 equivalence classes. [2025-02-08 00:55:33,692 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:55:33,692 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-02-08 00:55:33,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:33,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 00:55:33,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:55:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 419 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:55:33,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:55:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 419 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:55:34,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686507716] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:55:34,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:55:34,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 48 [2025-02-08 00:55:34,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968035171] [2025-02-08 00:55:34,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:55:34,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-08 00:55:34,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:34,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-08 00:55:34,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2025-02-08 00:55:34,588 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:34,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 210 transitions, 4849 flow. Second operand has 49 states, 49 states have (on average 7.183673469387755) internal successors, (352), 49 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:34,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:34,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:34,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:37,443 INFO L124 PetriNetUnfolderBase]: 3289/6345 cut-off events. [2025-02-08 00:55:37,443 INFO L125 PetriNetUnfolderBase]: For 1351086/1351086 co-relation queries the response was YES. [2025-02-08 00:55:37,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76224 conditions, 6345 events. 3289/6345 cut-off events. For 1351086/1351086 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 32554 event pairs, 1121 based on Foata normal form. 189/6530 useless extension candidates. Maximal degree in co-relation 76101. Up to 3888 conditions per place. [2025-02-08 00:55:37,537 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 332 selfloop transitions, 67 changer transitions 237/639 dead transitions. [2025-02-08 00:55:37,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 639 transitions, 21037 flow [2025-02-08 00:55:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-02-08 00:55:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2025-02-08 00:55:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 809 transitions. [2025-02-08 00:55:37,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4885265700483092 [2025-02-08 00:55:37,547 INFO L175 Difference]: Start difference. First operand has 282 places, 210 transitions, 4849 flow. Second operand 69 states and 809 transitions. [2025-02-08 00:55:37,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 639 transitions, 21037 flow [2025-02-08 00:55:39,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 639 transitions, 16883 flow, removed 2043 selfloop flow, removed 24 redundant places. [2025-02-08 00:55:39,602 INFO L231 Difference]: Finished difference. Result has 360 places, 260 transitions, 5951 flow [2025-02-08 00:55:39,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=5951, PETRI_PLACES=360, PETRI_TRANSITIONS=260} [2025-02-08 00:55:39,603 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 334 predicate places. [2025-02-08 00:55:39,603 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 260 transitions, 5951 flow [2025-02-08 00:55:39,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.183673469387755) internal successors, (352), 49 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:39,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:39,603 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:39,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 00:55:39,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-08 00:55:39,808 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:39,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:39,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1241897333, now seen corresponding path program 6 times [2025-02-08 00:55:39,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:39,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846957664] [2025-02-08 00:55:39,809 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 00:55:39,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:39,822 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 87 statements into 11 equivalence classes. [2025-02-08 00:55:39,835 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:55:39,835 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-08 00:55:39,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 314 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 00:55:40,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:40,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846957664] [2025-02-08 00:55:40,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846957664] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:55:40,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141778446] [2025-02-08 00:55:40,531 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 00:55:40,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:40,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:40,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:55:40,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 00:55:40,615 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 87 statements into 11 equivalence classes. [2025-02-08 00:55:40,648 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:55:40,648 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-08 00:55:40,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:40,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 00:55:40,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:55:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 314 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 00:55:40,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:55:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 314 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 00:55:41,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141778446] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:55:41,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:55:41,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 50 [2025-02-08 00:55:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636574877] [2025-02-08 00:55:41,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:55:41,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-08 00:55:41,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:41,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-08 00:55:41,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=1995, Unknown=0, NotChecked=0, Total=2550 [2025-02-08 00:55:41,649 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:41,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 260 transitions, 5951 flow. Second operand has 51 states, 51 states have (on average 7.176470588235294) internal successors, (366), 51 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:41,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:41,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:41,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:45,273 INFO L124 PetriNetUnfolderBase]: 4261/8561 cut-off events. [2025-02-08 00:55:45,273 INFO L125 PetriNetUnfolderBase]: For 2650776/2650776 co-relation queries the response was YES. [2025-02-08 00:55:45,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115224 conditions, 8561 events. 4261/8561 cut-off events. For 2650776/2650776 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 48985 event pairs, 798 based on Foata normal form. 189/8746 useless extension candidates. Maximal degree in co-relation 115067. Up to 2893 conditions per place. [2025-02-08 00:55:45,380 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 308 selfloop transitions, 225 changer transitions 251/787 dead transitions. [2025-02-08 00:55:45,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 787 transitions, 26744 flow [2025-02-08 00:55:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-02-08 00:55:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2025-02-08 00:55:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 895 transitions. [2025-02-08 00:55:45,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4906798245614035 [2025-02-08 00:55:45,387 INFO L175 Difference]: Start difference. First operand has 360 places, 260 transitions, 5951 flow. Second operand 76 states and 895 transitions. [2025-02-08 00:55:45,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 787 transitions, 26744 flow [2025-02-08 00:55:52,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 787 transitions, 22894 flow, removed 1911 selfloop flow, removed 31 redundant places. [2025-02-08 00:55:52,699 INFO L231 Difference]: Finished difference. Result has 424 places, 367 transitions, 8963 flow [2025-02-08 00:55:52,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4321, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=8963, PETRI_PLACES=424, PETRI_TRANSITIONS=367} [2025-02-08 00:55:52,700 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 398 predicate places. [2025-02-08 00:55:52,700 INFO L471 AbstractCegarLoop]: Abstraction has has 424 places, 367 transitions, 8963 flow [2025-02-08 00:55:52,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 7.176470588235294) internal successors, (366), 51 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:52,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:55:52,700 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:55:52,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 00:55:52,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:52,901 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:55:52,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:55:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash 66659557, now seen corresponding path program 7 times [2025-02-08 00:55:52,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:55:52,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428742482] [2025-02-08 00:55:52,903 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 00:55:52,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:55:52,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-02-08 00:55:52,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:55:52,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:52,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:55:53,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:55:53,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428742482] [2025-02-08 00:55:53,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428742482] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:55:53,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658813280] [2025-02-08 00:55:53,403 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 00:55:53,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:55:53,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:55:53,405 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:55:53,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 00:55:53,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-02-08 00:55:53,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:55:53,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 00:55:53,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:55:53,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 00:55:53,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:55:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:55:53,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:55:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:55:54,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658813280] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:55:54,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:55:54,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 54 [2025-02-08 00:55:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443476045] [2025-02-08 00:55:54,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:55:54,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-02-08 00:55:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:55:54,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-02-08 00:55:54,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2429, Unknown=0, NotChecked=0, Total=2970 [2025-02-08 00:55:54,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:55:54,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 367 transitions, 8963 flow. Second operand has 55 states, 55 states have (on average 7.181818181818182) internal successors, (395), 55 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:55:54,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:55:54,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:55:54,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:55:59,206 INFO L124 PetriNetUnfolderBase]: 5566/11584 cut-off events. [2025-02-08 00:55:59,207 INFO L125 PetriNetUnfolderBase]: For 4865876/4865876 co-relation queries the response was YES. [2025-02-08 00:55:59,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173694 conditions, 11584 events. 5566/11584 cut-off events. For 4865876/4865876 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 74502 event pairs, 440 based on Foata normal form. 189/11769 useless extension candidates. Maximal degree in co-relation 173516. Up to 2997 conditions per place. [2025-02-08 00:55:59,832 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 279 selfloop transitions, 430 changer transitions 265/977 dead transitions. [2025-02-08 00:55:59,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 977 transitions, 36076 flow [2025-02-08 00:55:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-02-08 00:55:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2025-02-08 00:55:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 986 transitions. [2025-02-08 00:55:59,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49497991967871485 [2025-02-08 00:55:59,834 INFO L175 Difference]: Start difference. First operand has 424 places, 367 transitions, 8963 flow. Second operand 83 states and 986 transitions. [2025-02-08 00:55:59,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 977 transitions, 36076 flow [2025-02-08 00:56:18,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 977 transitions, 31047 flow, removed 2481 selfloop flow, removed 35 redundant places. [2025-02-08 00:56:18,318 INFO L231 Difference]: Finished difference. Result has 495 places, 515 transitions, 13701 flow [2025-02-08 00:56:18,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6992, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=13701, PETRI_PLACES=495, PETRI_TRANSITIONS=515} [2025-02-08 00:56:18,319 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 469 predicate places. [2025-02-08 00:56:18,320 INFO L471 AbstractCegarLoop]: Abstraction has has 495 places, 515 transitions, 13701 flow [2025-02-08 00:56:18,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.181818181818182) internal successors, (395), 55 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:56:18,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:56:18,320 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:56:18,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 00:56:18,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 00:56:18,524 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:56:18,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:56:18,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825689, now seen corresponding path program 8 times [2025-02-08 00:56:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:56:18,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480302016] [2025-02-08 00:56:18,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 00:56:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:56:18,530 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-02-08 00:56:18,536 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:56:18,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 00:56:18,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:56:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:56:18,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:56:18,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480302016] [2025-02-08 00:56:18,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480302016] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:56:18,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406131612] [2025-02-08 00:56:18,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 00:56:18,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:56:18,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:56:18,926 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:56:18,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 00:56:18,956 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-02-08 00:56:18,972 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:56:18,972 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 00:56:18,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:56:18,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 00:56:18,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:56:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:56:19,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:56:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 00:56:19,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406131612] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:56:19,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:56:19,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2025-02-08 00:56:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707149777] [2025-02-08 00:56:19,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:56:19,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-02-08 00:56:19,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:56:19,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-02-08 00:56:19,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=2661, Unknown=0, NotChecked=0, Total=3192 [2025-02-08 00:56:19,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:56:19,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 515 transitions, 13701 flow. Second operand has 57 states, 57 states have (on average 7.105263157894737) internal successors, (405), 57 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:56:19,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:56:19,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:56:19,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 00:56:27,436 INFO L124 PetriNetUnfolderBase]: 8275/16834 cut-off events. [2025-02-08 00:56:27,437 INFO L125 PetriNetUnfolderBase]: For 9425557/9425557 co-relation queries the response was YES. [2025-02-08 00:56:27,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281570 conditions, 16834 events. 8275/16834 cut-off events. For 9425557/9425557 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 114419 event pairs, 204 based on Foata normal form. 189/17019 useless extension candidates. Maximal degree in co-relation 281368. Up to 4308 conditions per place. [2025-02-08 00:56:27,783 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 338 selfloop transitions, 663 changer transitions 259/1263 dead transitions. [2025-02-08 00:56:27,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1263 transitions, 49836 flow [2025-02-08 00:56:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-08 00:56:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2025-02-08 00:56:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1171 transitions. [2025-02-08 00:56:27,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5082465277777778 [2025-02-08 00:56:27,786 INFO L175 Difference]: Start difference. First operand has 495 places, 515 transitions, 13701 flow. Second operand 96 states and 1171 transitions. [2025-02-08 00:56:27,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1263 transitions, 49836 flow [2025-02-08 00:56:51,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 1263 transitions, 38713 flow, removed 5509 selfloop flow, removed 37 redundant places. [2025-02-08 00:56:51,714 INFO L231 Difference]: Finished difference. Result has 582 places, 710 transitions, 19152 flow [2025-02-08 00:56:51,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10720, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=19152, PETRI_PLACES=582, PETRI_TRANSITIONS=710} [2025-02-08 00:56:51,715 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 556 predicate places. [2025-02-08 00:56:51,715 INFO L471 AbstractCegarLoop]: Abstraction has has 582 places, 710 transitions, 19152 flow [2025-02-08 00:56:51,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.105263157894737) internal successors, (405), 57 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:56:51,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 00:56:51,715 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 00:56:51,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 00:56:51,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:56:51,916 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 00:56:51,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 00:56:51,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1262180403, now seen corresponding path program 9 times [2025-02-08 00:56:51,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 00:56:51,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889219766] [2025-02-08 00:56:51,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 00:56:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 00:56:51,927 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 87 statements into 12 equivalence classes. [2025-02-08 00:56:51,943 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:56:51,948 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-08 00:56:51,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:56:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 00:56:52,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 00:56:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889219766] [2025-02-08 00:56:52,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889219766] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 00:56:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509685346] [2025-02-08 00:56:52,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 00:56:52,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 00:56:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 00:56:52,324 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 00:56:52,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 00:56:52,357 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 87 statements into 12 equivalence classes. [2025-02-08 00:56:52,377 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 87 of 87 statements. [2025-02-08 00:56:52,377 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-08 00:56:52,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 00:56:52,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 00:56:52,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 00:56:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 00:56:52,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 00:56:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 00:56:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509685346] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 00:56:52,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 00:56:52,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 50 [2025-02-08 00:56:52,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504385813] [2025-02-08 00:56:52,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 00:56:52,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-08 00:56:52,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 00:56:52,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-08 00:56:52,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1969, Unknown=0, NotChecked=0, Total=2550 [2025-02-08 00:56:52,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-08 00:56:52,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 710 transitions, 19152 flow. Second operand has 51 states, 51 states have (on average 7.1568627450980395) internal successors, (365), 51 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 00:56:52,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 00:56:52,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-08 00:56:52,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand