./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 c00e63dc 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-?-c00e63d-m [2025-02-06 04:15:20,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:15:20,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:15:20,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:15:20,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:15:20,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:15:20,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:15:20,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:15:20,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:15:20,652 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:15:20,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:15:20,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:15:20,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:15:20,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:15:20,654 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:15:20,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:15:20,655 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:15:20,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:15:20,656 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:15:20,656 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:15:20,656 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:15:20,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:15:20,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:15:20,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:15:20,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:15:20,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:15:20,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:15:20,657 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:15:20,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:15:20,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:15:20,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:15:20,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:15:20,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:15:20,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:15:20,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:15:20,658 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 [2025-02-06 04:15:20,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:15:20,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:15:20,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:15:20,965 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:15:20,965 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:15:20,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2025-02-06 04:15:22,242 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98ae0a221/7f32acf26f5c450bb9542bbbdcdee300/FLAG243cb3f06 [2025-02-06 04:15:22,616 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:15:22,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2025-02-06 04:15:22,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98ae0a221/7f32acf26f5c450bb9542bbbdcdee300/FLAG243cb3f06 [2025-02-06 04:15:22,659 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98ae0a221/7f32acf26f5c450bb9542bbbdcdee300 [2025-02-06 04:15:22,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:15:22,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:15:22,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:15:22,667 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:15:22,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:15:22,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:15:22" (1/1) ... [2025-02-06 04:15:22,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e6f004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:22, skipping insertion in model container [2025-02-06 04:15:22,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:15:22" (1/1) ... [2025-02-06 04:15:22,718 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:15:22,988 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] [2025-02-06 04:15:22,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:15:23,006 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:15:23,057 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] [2025-02-06 04:15:23,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:15:23,082 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:15:23,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23 WrapperNode [2025-02-06 04:15:23,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:15:23,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:15:23,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:15:23,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:15:23,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,120 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2025-02-06 04:15:23,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:15:23,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:15:23,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:15:23,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:15:23,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,148 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]. [2025-02-06 04:15:23,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,154 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:15:23,167 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:15:23,167 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:15:23,167 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:15:23,168 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (1/1) ... [2025-02-06 04:15:23,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:15:23,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:23,202 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) [2025-02-06 04:15:23,205 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 [2025-02-06 04:15:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-06 04:15:23,230 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-06 04:15:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-06 04:15:23,230 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-06 04:15:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:15:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:15:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:15:23,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:15:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:15:23,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:15:23,232 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:15:23,334 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:15:23,336 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:15:23,449 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:15:23,449 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:15:23,529 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:15:23,529 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:15:23,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:15:23 BoogieIcfgContainer [2025-02-06 04:15:23,530 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:15:23,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:15:23,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:15:23,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:15:23,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:15:22" (1/3) ... [2025-02-06 04:15:23,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cca77cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:15:23, skipping insertion in model container [2025-02-06 04:15:23,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:15:23" (2/3) ... [2025-02-06 04:15:23,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cca77cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:15:23, skipping insertion in model container [2025-02-06 04:15:23,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:15:23" (3/3) ... [2025-02-06 04:15:23,539 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2025-02-06 04:15:23,551 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:15:23,553 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. [2025-02-06 04:15:23,553 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:15:23,598 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:15:23,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2025-02-06 04:15:23,656 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-02-06 04:15:23,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:15:23,661 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 24 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. [2025-02-06 04:15:23,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2025-02-06 04:15:23,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2025-02-06 04:15:23,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:15:23,683 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;@46c3c46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:15:23,683 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:15:23,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:15:23,695 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-02-06 04:15:23,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:15:23,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:23,698 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:23,698 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:23,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash 341173782, now seen corresponding path program 1 times [2025-02-06 04:15:23,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:23,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081395163] [2025-02-06 04:15:23,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:23,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:15:23,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:15:23,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:23,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:24,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:24,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081395163] [2025-02-06 04:15:24,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081395163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:24,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:24,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:15:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999942339] [2025-02-06 04:15:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:24,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:15:24,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:24,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:15:24,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:15:24,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:24,210 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) [2025-02-06 04:15:24,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:24,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:24,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:24,471 INFO L124 PetriNetUnfolderBase]: 321/540 cut-off events. [2025-02-06 04:15:24,472 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:15:24,475 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 2134 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. [2025-02-06 04:15:24,480 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2025-02-06 04:15:24,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2025-02-06 04:15:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:15:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:15:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2025-02-06 04:15:24,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-06 04:15:24,497 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2025-02-06 04:15:24,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2025-02-06 04:15:24,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:15:24,506 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2025-02-06 04:15:24,508 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} [2025-02-06 04:15:24,511 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2025-02-06 04:15:24,512 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2025-02-06 04:15:24,512 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) [2025-02-06 04:15:24,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:24,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:24,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:15:24,514 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:24,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:24,514 INFO L85 PathProgramCache]: Analyzing trace with hash -26154636, now seen corresponding path program 1 times [2025-02-06 04:15:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533333904] [2025-02-06 04:15:24,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:24,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:15:24,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:15:24,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:24,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533333904] [2025-02-06 04:15:24,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533333904] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:24,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:24,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:15:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560293450] [2025-02-06 04:15:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:24,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:15:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:24,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:15:24,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:15:24,711 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:24,712 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) [2025-02-06 04:15:24,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:24,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:24,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:24,977 INFO L124 PetriNetUnfolderBase]: 382/687 cut-off events. [2025-02-06 04:15:24,978 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-02-06 04:15:24,981 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 2911 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. [2025-02-06 04:15:24,986 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2025-02-06 04:15:24,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2025-02-06 04:15:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:15:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:15:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2025-02-06 04:15:24,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-02-06 04:15:24,991 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2025-02-06 04:15:24,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2025-02-06 04:15:24,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-06 04:15:24,996 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2025-02-06 04:15:24,996 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} [2025-02-06 04:15:24,997 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2025-02-06 04:15:24,997 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2025-02-06 04:15:24,997 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) [2025-02-06 04:15:24,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:24,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:24,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:15:24,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:24,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:24,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1984146740, now seen corresponding path program 2 times [2025-02-06 04:15:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:24,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177156162] [2025-02-06 04:15:24,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:24,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:25,006 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:15:25,012 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:15:25,012 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:15:25,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:25,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:25,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177156162] [2025-02-06 04:15:25,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177156162] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:25,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:25,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:15:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028462030] [2025-02-06 04:15:25,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:25,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:15:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:25,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:15:25,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:15:25,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:25,191 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) [2025-02-06 04:15:25,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:25,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:25,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:25,397 INFO L124 PetriNetUnfolderBase]: 328/603 cut-off events. [2025-02-06 04:15:25,398 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-02-06 04:15:25,401 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 2513 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. [2025-02-06 04:15:25,404 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2025-02-06 04:15:25,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2025-02-06 04:15:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:15:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:15:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2025-02-06 04:15:25,406 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2025-02-06 04:15:25,406 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2025-02-06 04:15:25,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2025-02-06 04:15:25,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 04:15:25,416 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2025-02-06 04:15:25,416 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} [2025-02-06 04:15:25,418 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2025-02-06 04:15:25,418 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2025-02-06 04:15:25,418 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) [2025-02-06 04:15:25,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:25,419 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:25,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:15:25,419 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:25,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1835947175, now seen corresponding path program 1 times [2025-02-06 04:15:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:25,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533086461] [2025-02-06 04:15:25,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:25,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 04:15:25,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 04:15:25,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:25,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:25,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:25,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533086461] [2025-02-06 04:15:25,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533086461] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:25,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:25,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:15:25,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603083941] [2025-02-06 04:15:25,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:25,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:15:25,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:25,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:15:25,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:15:25,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:25,596 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) [2025-02-06 04:15:25,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:25,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:25,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:25,903 INFO L124 PetriNetUnfolderBase]: 337/612 cut-off events. [2025-02-06 04:15:25,903 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2025-02-06 04:15:25,906 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 2551 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. [2025-02-06 04:15:25,908 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2025-02-06 04:15:25,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2025-02-06 04:15:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:15:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:15:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2025-02-06 04:15:25,913 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-02-06 04:15:25,913 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2025-02-06 04:15:25,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2025-02-06 04:15:25,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 540 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-02-06 04:15:25,922 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2025-02-06 04:15:25,922 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} [2025-02-06 04:15:25,923 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2025-02-06 04:15:25,924 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2025-02-06 04:15:25,924 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) [2025-02-06 04:15:25,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:25,924 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:25,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:15:25,924 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:25,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash 765975211, now seen corresponding path program 2 times [2025-02-06 04:15:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128836849] [2025-02-06 04:15:25,926 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:25,933 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-02-06 04:15:25,937 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 04:15:25,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:15:25,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:26,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128836849] [2025-02-06 04:15:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128836849] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:26,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:15:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329086113] [2025-02-06 04:15:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:26,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:15:26,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:26,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:15:26,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:15:26,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:26,044 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) [2025-02-06 04:15:26,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:26,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:26,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:26,307 INFO L124 PetriNetUnfolderBase]: 445/801 cut-off events. [2025-02-06 04:15:26,308 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2025-02-06 04:15:26,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 801 events. 445/801 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3459 event pairs, 59 based on Foata normal form. 27/823 useless extension candidates. Maximal degree in co-relation 2600. Up to 151 conditions per place. [2025-02-06 04:15:26,328 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 23 changer transitions 30/100 dead transitions. [2025-02-06 04:15:26,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 739 flow [2025-02-06 04:15:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:15:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:15:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2025-02-06 04:15:26,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2025-02-06 04:15:26,330 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 11 states and 138 transitions. [2025-02-06 04:15:26,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 739 flow [2025-02-06 04:15:26,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 685 flow, removed 21 selfloop flow, removed 4 redundant places. [2025-02-06 04:15:26,341 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 390 flow [2025-02-06 04:15:26,341 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=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=390, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2025-02-06 04:15:26,343 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2025-02-06 04:15:26,344 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 390 flow [2025-02-06 04:15:26,344 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) [2025-02-06 04:15:26,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:26,345 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:26,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:15:26,345 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:26,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1363386587, now seen corresponding path program 1 times [2025-02-06 04:15:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:26,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911215815] [2025-02-06 04:15:26,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:26,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:15:26,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:26,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:26,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:26,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911215815] [2025-02-06 04:15:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911215815] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693972978] [2025-02-06 04:15:26,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:26,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:26,502 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) [2025-02-06 04:15:26,504 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 [2025-02-06 04:15:26,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:15:26,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:26,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:26,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:26,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:15:26,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:26,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:26,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693972978] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:26,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:26,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-06 04:15:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443255291] [2025-02-06 04:15:26,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:26,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:15:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:26,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:15:26,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:15:26,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:26,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2025-02-06 04:15:26,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:26,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:26,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:27,344 INFO L124 PetriNetUnfolderBase]: 571/1050 cut-off events. [2025-02-06 04:15:27,345 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2025-02-06 04:15:27,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 1050 events. 571/1050 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4364 event pairs, 137 based on Foata normal form. 63/1109 useless extension candidates. Maximal degree in co-relation 4107. Up to 486 conditions per place. [2025-02-06 04:15:27,352 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 64 selfloop transitions, 17 changer transitions 67/151 dead transitions. [2025-02-06 04:15:27,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 151 transitions, 1346 flow [2025-02-06 04:15:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 04:15:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-06 04:15:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2025-02-06 04:15:27,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2025-02-06 04:15:27,354 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 390 flow. Second operand 19 states and 231 transitions. [2025-02-06 04:15:27,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 151 transitions, 1346 flow [2025-02-06 04:15:27,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 151 transitions, 1267 flow, removed 32 selfloop flow, removed 5 redundant places. [2025-02-06 04:15:27,369 INFO L231 Difference]: Finished difference. Result has 88 places, 51 transitions, 521 flow [2025-02-06 04:15:27,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=521, PETRI_PLACES=88, PETRI_TRANSITIONS=51} [2025-02-06 04:15:27,371 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2025-02-06 04:15:27,372 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 51 transitions, 521 flow [2025-02-06 04:15:27,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2025-02-06 04:15:27,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:27,372 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:27,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:15:27,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:27,573 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:27,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1919587149, now seen corresponding path program 2 times [2025-02-06 04:15:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:27,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865712447] [2025-02-06 04:15:27,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:27,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:27,581 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:15:27,585 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:27,586 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:15:27,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:27,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:27,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865712447] [2025-02-06 04:15:27,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865712447] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:15:27,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:15:27,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:15:27,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122337704] [2025-02-06 04:15:27,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:15:27,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:15:27,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:27,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:15:27,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:15:27,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:27,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 51 transitions, 521 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) [2025-02-06 04:15:27,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:27,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:27,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:28,102 INFO L124 PetriNetUnfolderBase]: 652/1217 cut-off events. [2025-02-06 04:15:28,102 INFO L125 PetriNetUnfolderBase]: For 19130/19130 co-relation queries the response was YES. [2025-02-06 04:15:28,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 1217 events. 652/1217 cut-off events. For 19130/19130 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5640 event pairs, 132 based on Foata normal form. 27/1240 useless extension candidates. Maximal degree in co-relation 6019. Up to 483 conditions per place. [2025-02-06 04:15:28,113 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 76 selfloop transitions, 23 changer transitions 31/133 dead transitions. [2025-02-06 04:15:28,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 1509 flow [2025-02-06 04:15:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:15:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:15:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 187 transitions. [2025-02-06 04:15:28,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2025-02-06 04:15:28,115 INFO L175 Difference]: Start difference. First operand has 88 places, 51 transitions, 521 flow. Second operand 15 states and 187 transitions. [2025-02-06 04:15:28,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 1509 flow [2025-02-06 04:15:28,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 1211 flow, removed 138 selfloop flow, removed 12 redundant places. [2025-02-06 04:15:28,140 INFO L231 Difference]: Finished difference. Result has 90 places, 57 transitions, 583 flow [2025-02-06 04:15:28,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=583, PETRI_PLACES=90, PETRI_TRANSITIONS=57} [2025-02-06 04:15:28,142 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2025-02-06 04:15:28,142 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 57 transitions, 583 flow [2025-02-06 04:15:28,142 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) [2025-02-06 04:15:28,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:28,142 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:28,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:15:28,143 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:28,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:28,146 INFO L85 PathProgramCache]: Analyzing trace with hash -744688909, now seen corresponding path program 3 times [2025-02-06 04:15:28,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:28,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213766931] [2025-02-06 04:15:28,146 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:15:28,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:28,155 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:15:28,159 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:28,159 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:15:28,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:28,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:28,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213766931] [2025-02-06 04:15:28,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213766931] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730277421] [2025-02-06 04:15:28,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:15:28,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:28,280 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) [2025-02-06 04:15:28,283 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 [2025-02-06 04:15:28,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:15:28,334 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:15:28,335 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:15:28,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:28,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:15:28,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:28,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:28,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730277421] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:28,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:28,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-06 04:15:28,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134764489] [2025-02-06 04:15:28,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:28,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:15:28,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:28,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:15:28,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:15:28,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:28,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 57 transitions, 583 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:28,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:28,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:28,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:29,211 INFO L124 PetriNetUnfolderBase]: 841/1529 cut-off events. [2025-02-06 04:15:29,212 INFO L125 PetriNetUnfolderBase]: For 24317/24317 co-relation queries the response was YES. [2025-02-06 04:15:29,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7756 conditions, 1529 events. 841/1529 cut-off events. For 24317/24317 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7243 event pairs, 46 based on Foata normal form. 81/1606 useless extension candidates. Maximal degree in co-relation 7713. Up to 246 conditions per place. [2025-02-06 04:15:29,223 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 79 selfloop transitions, 49 changer transitions 83/214 dead transitions. [2025-02-06 04:15:29,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 214 transitions, 2477 flow [2025-02-06 04:15:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 04:15:29,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-06 04:15:29,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 321 transitions. [2025-02-06 04:15:29,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144230769230769 [2025-02-06 04:15:29,227 INFO L175 Difference]: Start difference. First operand has 90 places, 57 transitions, 583 flow. Second operand 26 states and 321 transitions. [2025-02-06 04:15:29,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 214 transitions, 2477 flow [2025-02-06 04:15:29,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 214 transitions, 2253 flow, removed 96 selfloop flow, removed 10 redundant places. [2025-02-06 04:15:29,258 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 953 flow [2025-02-06 04:15:29,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=953, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2025-02-06 04:15:29,261 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2025-02-06 04:15:29,261 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 953 flow [2025-02-06 04:15:29,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:29,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:29,262 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:29,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 04:15:29,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:29,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:29,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1992501135, now seen corresponding path program 1 times [2025-02-06 04:15:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:29,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257854212] [2025-02-06 04:15:29,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:29,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:29,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:15:29,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:15:29,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:29,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:29,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:29,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257854212] [2025-02-06 04:15:29,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257854212] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:29,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789335676] [2025-02-06 04:15:29,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:15:29,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:29,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:29,631 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) [2025-02-06 04:15:29,634 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 [2025-02-06 04:15:29,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:15:29,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:15:29,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:15:29,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:29,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 04:15:29,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:29,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789335676] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:29,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:29,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-06 04:15:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636037673] [2025-02-06 04:15:29,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:29,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 04:15:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:29,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 04:15:29,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:15:29,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:29,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 953 flow. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:29,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:29,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:29,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:30,799 INFO L124 PetriNetUnfolderBase]: 1327/2416 cut-off events. [2025-02-06 04:15:30,800 INFO L125 PetriNetUnfolderBase]: For 77863/77863 co-relation queries the response was YES. [2025-02-06 04:15:30,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14985 conditions, 2416 events. 1327/2416 cut-off events. For 77863/77863 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11833 event pairs, 83 based on Foata normal form. 63/2474 useless extension candidates. Maximal degree in co-relation 14928. Up to 444 conditions per place. [2025-02-06 04:15:30,823 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 97 selfloop transitions, 80 changer transitions 86/266 dead transitions. [2025-02-06 04:15:30,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 266 transitions, 4124 flow [2025-02-06 04:15:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-06 04:15:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-06 04:15:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 358 transitions. [2025-02-06 04:15:30,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.514367816091954 [2025-02-06 04:15:30,827 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 953 flow. Second operand 29 states and 358 transitions. [2025-02-06 04:15:30,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 266 transitions, 4124 flow [2025-02-06 04:15:30,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 266 transitions, 3416 flow, removed 330 selfloop flow, removed 18 redundant places. [2025-02-06 04:15:30,912 INFO L231 Difference]: Finished difference. Result has 141 places, 106 transitions, 1630 flow [2025-02-06 04:15:30,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1630, PETRI_PLACES=141, PETRI_TRANSITIONS=106} [2025-02-06 04:15:30,914 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 115 predicate places. [2025-02-06 04:15:30,914 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 106 transitions, 1630 flow [2025-02-06 04:15:30,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:15:30,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:30,914 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:30,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:15:31,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:31,115 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:31,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1036724740, now seen corresponding path program 2 times [2025-02-06 04:15:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:31,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336208378] [2025-02-06 04:15:31,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:31,123 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-06 04:15:31,132 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:15:31,132 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:15:31,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:15:31,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336208378] [2025-02-06 04:15:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336208378] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:31,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437437144] [2025-02-06 04:15:31,408 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:15:31,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:31,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:31,410 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) [2025-02-06 04:15:31,412 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 [2025-02-06 04:15:31,454 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-06 04:15:31,471 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:15:31,471 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:15:31,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:31,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 04:15:31,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:15:31,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:15:31,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437437144] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:31,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:31,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2025-02-06 04:15:31,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996881466] [2025-02-06 04:15:31,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:31,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 04:15:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:31,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 04:15:31,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2025-02-06 04:15:31,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:31,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 106 transitions, 1630 flow. Second operand has 25 states, 25 states have (on average 7.2) internal successors, (180), 25 states have internal predecessors, (180), 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) [2025-02-06 04:15:31,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:31,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:31,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:33,229 INFO L124 PetriNetUnfolderBase]: 1561/2913 cut-off events. [2025-02-06 04:15:33,229 INFO L125 PetriNetUnfolderBase]: For 172037/172037 co-relation queries the response was YES. [2025-02-06 04:15:33,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21787 conditions, 2913 events. 1561/2913 cut-off events. For 172037/172037 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13960 event pairs, 455 based on Foata normal form. 117/3026 useless extension candidates. Maximal degree in co-relation 21720. Up to 1656 conditions per place. [2025-02-06 04:15:33,258 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 152 selfloop transitions, 35 changer transitions 133/323 dead transitions. [2025-02-06 04:15:33,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 323 transitions, 6273 flow [2025-02-06 04:15:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 04:15:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-06 04:15:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 441 transitions. [2025-02-06 04:15:33,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2025-02-06 04:15:33,260 INFO L175 Difference]: Start difference. First operand has 141 places, 106 transitions, 1630 flow. Second operand 37 states and 441 transitions. [2025-02-06 04:15:33,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 323 transitions, 6273 flow [2025-02-06 04:15:33,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 323 transitions, 4779 flow, removed 724 selfloop flow, removed 14 redundant places. [2025-02-06 04:15:33,427 INFO L231 Difference]: Finished difference. Result has 181 places, 120 transitions, 1824 flow [2025-02-06 04:15:33,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1824, PETRI_PLACES=181, PETRI_TRANSITIONS=120} [2025-02-06 04:15:33,428 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 155 predicate places. [2025-02-06 04:15:33,428 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 120 transitions, 1824 flow [2025-02-06 04:15:33,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.2) internal successors, (180), 25 states have internal predecessors, (180), 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) [2025-02-06 04:15:33,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:33,429 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:33,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:15:33,629 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,SelfDestructingSolverStorable9 [2025-02-06 04:15:33,630 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:33,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -248359848, now seen corresponding path program 3 times [2025-02-06 04:15:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:33,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191109051] [2025-02-06 04:15:33,632 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:15:33,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:33,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 5 equivalence classes. [2025-02-06 04:15:33,647 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:15:33,648 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 04:15:33,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:15:33,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:33,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191109051] [2025-02-06 04:15:33,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191109051] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:33,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604710003] [2025-02-06 04:15:33,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:15:33,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:33,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:33,889 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) [2025-02-06 04:15:33,892 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 [2025-02-06 04:15:33,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 5 equivalence classes. [2025-02-06 04:15:33,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:15:33,946 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 04:15:33,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:33,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 04:15:33,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:15:34,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:15:34,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604710003] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:34,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:34,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2025-02-06 04:15:34,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268310962] [2025-02-06 04:15:34,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:34,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 04:15:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:34,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 04:15:34,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2025-02-06 04:15:34,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:34,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 120 transitions, 1824 flow. Second operand has 25 states, 25 states have (on average 7.2) internal successors, (180), 25 states have internal predecessors, (180), 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) [2025-02-06 04:15:34,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:34,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:34,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:36,055 INFO L124 PetriNetUnfolderBase]: 1957/3799 cut-off events. [2025-02-06 04:15:36,055 INFO L125 PetriNetUnfolderBase]: For 291079/291079 co-relation queries the response was YES. [2025-02-06 04:15:36,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30189 conditions, 3799 events. 1957/3799 cut-off events. For 291079/291079 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 20806 event pairs, 266 based on Foata normal form. 117/3912 useless extension candidates. Maximal degree in co-relation 30104. Up to 1084 conditions per place. [2025-02-06 04:15:36,098 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 152 selfloop transitions, 106 changer transitions 147/408 dead transitions. [2025-02-06 04:15:36,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 408 transitions, 8148 flow [2025-02-06 04:15:36,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-06 04:15:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-02-06 04:15:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 527 transitions. [2025-02-06 04:15:36,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4990530303030303 [2025-02-06 04:15:36,101 INFO L175 Difference]: Start difference. First operand has 181 places, 120 transitions, 1824 flow. Second operand 44 states and 527 transitions. [2025-02-06 04:15:36,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 408 transitions, 8148 flow [2025-02-06 04:15:36,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 408 transitions, 6881 flow, removed 613 selfloop flow, removed 24 redundant places. [2025-02-06 04:15:36,439 INFO L231 Difference]: Finished difference. Result has 213 places, 165 transitions, 2837 flow [2025-02-06 04:15:36,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2837, PETRI_PLACES=213, PETRI_TRANSITIONS=165} [2025-02-06 04:15:36,440 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 187 predicate places. [2025-02-06 04:15:36,440 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 165 transitions, 2837 flow [2025-02-06 04:15:36,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.2) internal successors, (180), 25 states have internal predecessors, (180), 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) [2025-02-06 04:15:36,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:36,441 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:36,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:15:36,641 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,SelfDestructingSolverStorable10 [2025-02-06 04:15:36,641 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:36,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:36,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1040177928, now seen corresponding path program 4 times [2025-02-06 04:15:36,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:36,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506915888] [2025-02-06 04:15:36,644 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:15:36,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:36,654 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-06 04:15:36,661 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:15:36,661 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:15:36,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:15:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:36,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506915888] [2025-02-06 04:15:36,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506915888] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:36,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940236641] [2025-02-06 04:15:36,876 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:15:36,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:36,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:36,880 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) [2025-02-06 04:15:36,882 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 [2025-02-06 04:15:36,916 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-06 04:15:36,931 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:15:36,931 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:15:36,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:36,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 04:15:36,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:15:37,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:15:37,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940236641] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:37,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:37,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-06 04:15:37,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986483806] [2025-02-06 04:15:37,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:37,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 04:15:37,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:37,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 04:15:37,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-02-06 04:15:37,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:37,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 165 transitions, 2837 flow. Second operand has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 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) [2025-02-06 04:15:37,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:37,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:37,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:39,599 INFO L124 PetriNetUnfolderBase]: 3433/6569 cut-off events. [2025-02-06 04:15:39,599 INFO L125 PetriNetUnfolderBase]: For 700008/700008 co-relation queries the response was YES. [2025-02-06 04:15:39,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57356 conditions, 6569 events. 3433/6569 cut-off events. For 700008/700008 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 41182 event pairs, 144 based on Foata normal form. 126/6691 useless extension candidates. Maximal degree in co-relation 57258. Up to 1500 conditions per place. [2025-02-06 04:15:39,659 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 161 selfloop transitions, 235 changer transitions 162/561 dead transitions. [2025-02-06 04:15:39,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 561 transitions, 12693 flow [2025-02-06 04:15:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-02-06 04:15:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2025-02-06 04:15:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 607 transitions. [2025-02-06 04:15:39,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5058333333333334 [2025-02-06 04:15:39,661 INFO L175 Difference]: Start difference. First operand has 213 places, 165 transitions, 2837 flow. Second operand 50 states and 607 transitions. [2025-02-06 04:15:39,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 561 transitions, 12693 flow [2025-02-06 04:15:41,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 561 transitions, 10864 flow, removed 886 selfloop flow, removed 26 redundant places. [2025-02-06 04:15:41,119 INFO L231 Difference]: Finished difference. Result has 256 places, 278 transitions, 5391 flow [2025-02-06 04:15:41,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=5391, PETRI_PLACES=256, PETRI_TRANSITIONS=278} [2025-02-06 04:15:41,120 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 230 predicate places. [2025-02-06 04:15:41,120 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 278 transitions, 5391 flow [2025-02-06 04:15:41,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 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) [2025-02-06 04:15:41,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:41,121 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:41,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 04:15:41,325 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,SelfDestructingSolverStorable11 [2025-02-06 04:15:41,325 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:41,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1546388461, now seen corresponding path program 5 times [2025-02-06 04:15:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:41,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514754033] [2025-02-06 04:15:41,326 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:15:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:41,332 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 6 equivalence classes. [2025-02-06 04:15:41,338 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 04:15:41,338 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-06 04:15:41,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:15:41,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514754033] [2025-02-06 04:15:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514754033] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759077855] [2025-02-06 04:15:41,538 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:15:41,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:41,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:41,541 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) [2025-02-06 04:15:41,542 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 [2025-02-06 04:15:41,580 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 6 equivalence classes. [2025-02-06 04:15:41,594 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 04:15:41,595 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-06 04:15:41,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:41,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 04:15:41,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:15:41,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:15:41,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759077855] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:41,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:41,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2025-02-06 04:15:41,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626696564] [2025-02-06 04:15:41,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:41,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 04:15:41,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:41,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 04:15:41,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2025-02-06 04:15:41,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:41,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 278 transitions, 5391 flow. Second operand has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 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) [2025-02-06 04:15:41,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:41,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:41,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:45,020 INFO L124 PetriNetUnfolderBase]: 4819/9213 cut-off events. [2025-02-06 04:15:45,021 INFO L125 PetriNetUnfolderBase]: For 1635604/1635604 co-relation queries the response was YES. [2025-02-06 04:15:45,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99057 conditions, 9213 events. 4819/9213 cut-off events. For 1635604/1635604 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 59405 event pairs, 47 based on Foata normal form. 135/9343 useless extension candidates. Maximal degree in co-relation 98939. Up to 2127 conditions per place. [2025-02-06 04:15:45,116 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 198 selfloop transitions, 357 changer transitions 183/741 dead transitions. [2025-02-06 04:15:45,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 741 transitions, 21890 flow [2025-02-06 04:15:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-06 04:15:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-06 04:15:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 750 transitions. [2025-02-06 04:15:45,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5122950819672131 [2025-02-06 04:15:45,119 INFO L175 Difference]: Start difference. First operand has 256 places, 278 transitions, 5391 flow. Second operand 61 states and 750 transitions. [2025-02-06 04:15:45,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 741 transitions, 21890 flow [2025-02-06 04:15:48,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 741 transitions, 15904 flow, removed 2955 selfloop flow, removed 25 redundant places. [2025-02-06 04:15:48,253 INFO L231 Difference]: Finished difference. Result has 318 places, 387 transitions, 8332 flow [2025-02-06 04:15:48,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=8332, PETRI_PLACES=318, PETRI_TRANSITIONS=387} [2025-02-06 04:15:48,255 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 292 predicate places. [2025-02-06 04:15:48,255 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 387 transitions, 8332 flow [2025-02-06 04:15:48,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 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) [2025-02-06 04:15:48,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:48,256 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:48,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 04:15:48,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:48,461 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:48,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash -695864501, now seen corresponding path program 6 times [2025-02-06 04:15:48,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:48,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317687941] [2025-02-06 04:15:48,462 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:15:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:48,471 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 66 statements into 11 equivalence classes. [2025-02-06 04:15:48,495 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 66 of 66 statements. [2025-02-06 04:15:48,495 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-06 04:15:48,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:48,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:15:48,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317687941] [2025-02-06 04:15:48,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317687941] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:15:48,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093521918] [2025-02-06 04:15:48,889 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:15:48,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:48,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:15:48,892 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) [2025-02-06 04:15:48,894 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 [2025-02-06 04:15:48,931 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 66 statements into 11 equivalence classes. [2025-02-06 04:15:48,957 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 66 of 66 statements. [2025-02-06 04:15:48,958 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-06 04:15:48,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:15:48,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 04:15:48,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:15:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:49,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:15:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:15:49,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093521918] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:15:49,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:15:49,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-02-06 04:15:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776412342] [2025-02-06 04:15:49,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:15:49,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-06 04:15:49,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:15:49,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-06 04:15:49,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1519, Unknown=0, NotChecked=0, Total=1980 [2025-02-06 04:15:49,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:15:49,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 387 transitions, 8332 flow. Second operand has 45 states, 45 states have (on average 7.044444444444444) internal successors, (317), 45 states have internal predecessors, (317), 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) [2025-02-06 04:15:49,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:15:49,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:15:49,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:15:55,277 INFO L124 PetriNetUnfolderBase]: 6574/12421 cut-off events. [2025-02-06 04:15:55,277 INFO L125 PetriNetUnfolderBase]: For 3237313/3237313 co-relation queries the response was YES. [2025-02-06 04:15:55,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155451 conditions, 12421 events. 6574/12421 cut-off events. For 3237313/3237313 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 76652 event pairs, 58 based on Foata normal form. 279/12696 useless extension candidates. Maximal degree in co-relation 155304. Up to 2835 conditions per place. [2025-02-06 04:15:55,425 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 316 selfloop transitions, 470 changer transitions 329/1118 dead transitions. [2025-02-06 04:15:55,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1118 transitions, 37469 flow [2025-02-06 04:15:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2025-02-06 04:15:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2025-02-06 04:15:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 1284 transitions. [2025-02-06 04:15:55,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5095238095238095 [2025-02-06 04:15:55,428 INFO L175 Difference]: Start difference. First operand has 318 places, 387 transitions, 8332 flow. Second operand 105 states and 1284 transitions. [2025-02-06 04:15:55,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1118 transitions, 37469 flow [2025-02-06 04:15:59,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1118 transitions, 29014 flow, removed 4177 selfloop flow, removed 27 redundant places. [2025-02-06 04:15:59,783 INFO L231 Difference]: Finished difference. Result has 444 places, 502 transitions, 12264 flow [2025-02-06 04:15:59,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=12264, PETRI_PLACES=444, PETRI_TRANSITIONS=502} [2025-02-06 04:15:59,784 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 418 predicate places. [2025-02-06 04:15:59,784 INFO L471 AbstractCegarLoop]: Abstraction has has 444 places, 502 transitions, 12264 flow [2025-02-06 04:15:59,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 7.044444444444444) internal successors, (317), 45 states have internal predecessors, (317), 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) [2025-02-06 04:15:59,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:15:59,785 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:15:59,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 04:15:59,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:15:59,989 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:15:59,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:15:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash 305205861, now seen corresponding path program 7 times [2025-02-06 04:15:59,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:15:59,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985026139] [2025-02-06 04:15:59,990 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:15:59,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:15:59,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-06 04:16:00,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-06 04:16:00,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:00,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:16:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 695 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:16:01,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:16:01,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985026139] [2025-02-06 04:16:01,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985026139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:16:01,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116316651] [2025-02-06 04:16:01,005 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:16:01,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:16:01,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:16:01,008 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) [2025-02-06 04:16:01,010 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 [2025-02-06 04:16:01,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-06 04:16:01,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-06 04:16:01,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:01,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:16:01,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-06 04:16:01,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:16:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 695 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:16:01,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:16:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 695 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:16:02,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116316651] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:16:02,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:16:02,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 76 [2025-02-06 04:16:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997515201] [2025-02-06 04:16:02,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:16:02,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-02-06 04:16:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:16:02,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-02-06 04:16:02,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1354, Invalid=4498, Unknown=0, NotChecked=0, Total=5852 [2025-02-06 04:16:02,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:16:02,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 502 transitions, 12264 flow. Second operand has 77 states, 77 states have (on average 7.077922077922078) internal successors, (545), 77 states have internal predecessors, (545), 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) [2025-02-06 04:16:02,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:16:02,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:16:02,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:16:09,690 INFO L124 PetriNetUnfolderBase]: 8635/16057 cut-off events. [2025-02-06 04:16:09,691 INFO L125 PetriNetUnfolderBase]: For 6562932/6562932 co-relation queries the response was YES. [2025-02-06 04:16:09,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230190 conditions, 16057 events. 8635/16057 cut-off events. For 6562932/6562932 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 97395 event pairs, 65 based on Foata normal form. 54/16106 useless extension candidates. Maximal degree in co-relation 229995. Up to 3621 conditions per place. [2025-02-06 04:16:10,113 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 320 selfloop transitions, 631 changer transitions 195/1149 dead transitions. [2025-02-06 04:16:10,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1149 transitions, 43320 flow [2025-02-06 04:16:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-02-06 04:16:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2025-02-06 04:16:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 1041 transitions. [2025-02-06 04:16:10,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5043604651162791 [2025-02-06 04:16:10,116 INFO L175 Difference]: Start difference. First operand has 444 places, 502 transitions, 12264 flow. Second operand 86 states and 1041 transitions. [2025-02-06 04:16:10,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 1149 transitions, 43320 flow [2025-02-06 04:16:28,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1149 transitions, 28246 flow, removed 7436 selfloop flow, removed 40 redundant places. [2025-02-06 04:16:28,394 INFO L231 Difference]: Finished difference. Result has 486 places, 669 transitions, 13503 flow [2025-02-06 04:16:28,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8226, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=469, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=13503, PETRI_PLACES=486, PETRI_TRANSITIONS=669} [2025-02-06 04:16:28,395 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 460 predicate places. [2025-02-06 04:16:28,395 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 669 transitions, 13503 flow [2025-02-06 04:16:28,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 7.077922077922078) internal successors, (545), 77 states have internal predecessors, (545), 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) [2025-02-06 04:16:28,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:16:28,396 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:16:28,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 04:16:28,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:16:28,597 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:16:28,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:16:28,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1000036292, now seen corresponding path program 8 times [2025-02-06 04:16:28,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:16:28,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919833851] [2025-02-06 04:16:28,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:16:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:16:28,607 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 129 statements into 2 equivalence classes. [2025-02-06 04:16:28,633 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 129 of 129 statements. [2025-02-06 04:16:28,636 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:16:28,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:16:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:16:29,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:16:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919833851] [2025-02-06 04:16:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919833851] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:16:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979110712] [2025-02-06 04:16:29,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:16:29,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:16:29,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:16:29,711 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) [2025-02-06 04:16:29,712 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 [2025-02-06 04:16:29,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 129 statements into 2 equivalence classes. [2025-02-06 04:16:29,794 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 129 of 129 statements. [2025-02-06 04:16:29,794 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:16:29,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:16:29,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-06 04:16:29,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:16:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 1 proven. 887 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:16:29,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:16:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:16:30,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979110712] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:16:30,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:16:30,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2025-02-06 04:16:30,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467118649] [2025-02-06 04:16:30,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:16:30,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-06 04:16:30,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:16:30,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-06 04:16:30,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2025-02-06 04:16:30,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 04:16:30,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 669 transitions, 13503 flow. Second operand has 46 states, 46 states have (on average 6.978260869565218) internal successors, (321), 46 states have internal predecessors, (321), 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) [2025-02-06 04:16:30,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:16:30,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 04:16:30,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:16:38,198 INFO L124 PetriNetUnfolderBase]: 8635/16099 cut-off events. [2025-02-06 04:16:38,199 INFO L125 PetriNetUnfolderBase]: For 5526393/5526393 co-relation queries the response was YES. [2025-02-06 04:16:38,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199007 conditions, 16099 events. 8635/16099 cut-off events. For 5526393/5526393 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 97636 event pairs, 38 based on Foata normal form. 27/16122 useless extension candidates. Maximal degree in co-relation 198815. Up to 3639 conditions per place. [2025-02-06 04:16:38,429 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 332 selfloop transitions, 640 changer transitions 183/1158 dead transitions. [2025-02-06 04:16:38,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 1158 transitions, 30892 flow [2025-02-06 04:16:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-02-06 04:16:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2025-02-06 04:16:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1059 transitions. [2025-02-06 04:16:38,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5014204545454546 [2025-02-06 04:16:38,431 INFO L175 Difference]: Start difference. First operand has 486 places, 669 transitions, 13503 flow. Second operand 88 states and 1059 transitions. [2025-02-06 04:16:38,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 1158 transitions, 30892 flow