./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:13:12,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:13:12,625 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:13:12,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:13:12,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:13:12,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:13:12,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:13:12,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:13:12,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:13:12,655 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:13:12,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:13:12,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:13:12,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:13:12,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:13:12,655 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:13:12,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:13:12,656 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:13:12,657 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:12,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:13:12,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:13:12,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:13:12,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:13:12,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:13:12,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:13:12,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:13:12,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:13:12,658 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 ! overflow) ) 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 -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2025-02-08 14:13:12,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:13:12,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:13:12,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:13:12,935 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:13:12,935 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:13:12,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-02-08 14:13:14,134 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9bdf326a4/f11948aa82234dfa813937be362d4d61/FLAG708662545 [2025-02-08 14:13:14,324 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:13:14,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-02-08 14:13:14,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9bdf326a4/f11948aa82234dfa813937be362d4d61/FLAG708662545 [2025-02-08 14:13:14,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9bdf326a4/f11948aa82234dfa813937be362d4d61 [2025-02-08 14:13:14,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:13:14,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:13:14,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:14,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:13:14,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:13:14,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526aef84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14, skipping insertion in model container [2025-02-08 14:13:14,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,361 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:13:14,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:14,466 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:13:14,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:13:14,487 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:13:14,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14 WrapperNode [2025-02-08 14:13:14,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:13:14,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:14,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:13:14,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:13:14,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,511 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2025-02-08 14:13:14,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:13:14,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:13:14,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:13:14,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:13:14,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,525 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 14:13:14,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,528 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:13:14,532 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:13:14,532 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:13:14,532 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:13:14,533 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (1/1) ... [2025-02-08 14:13:14,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:13:14,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:14,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:13:14,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:13:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:13:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:13:14,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:13:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:13:14,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:13:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:13:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:13:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:13:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:13:14,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:13:14,586 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:13:14,652 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:13:14,653 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:13:14,787 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:13:14,787 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:13:14,884 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:13:14,884 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:13:14,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:14 BoogieIcfgContainer [2025-02-08 14:13:14,885 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:13:14,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:13:14,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:13:14,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:13:14,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:13:14" (1/3) ... [2025-02-08 14:13:14,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f7cca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:14, skipping insertion in model container [2025-02-08 14:13:14,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:13:14" (2/3) ... [2025-02-08 14:13:14,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f7cca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:13:14, skipping insertion in model container [2025-02-08 14:13:14,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:13:14" (3/3) ... [2025-02-08 14:13:14,894 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2025-02-08 14:13:14,905 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:13:14,906 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 28 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-08 14:13:14,907 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:13:14,949 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:13:14,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 29 transitions, 72 flow [2025-02-08 14:13:15,003 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2025-02-08 14:13:15,009 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:13:15,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 2/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 63 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-02-08 14:13:15,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 29 transitions, 72 flow [2025-02-08 14:13:15,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 25 transitions, 59 flow [2025-02-08 14:13:15,019 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:13:15,034 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;@370c5ce2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:13:15,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-08 14:13:15,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:13:15,045 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2025-02-08 14:13:15,045 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:13:15,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:15,046 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:13:15,046 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:15,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash 225101816, now seen corresponding path program 1 times [2025-02-08 14:13:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608683008] [2025-02-08 14:13:15,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:15,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:15,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:13:15,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:13:15,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:15,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:15,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:15,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608683008] [2025-02-08 14:13:15,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608683008] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:15,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:15,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:13:15,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8878176] [2025-02-08 14:13:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:15,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:15,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:15,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:15,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:15,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:15,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:15,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:15,444 INFO L124 PetriNetUnfolderBase]: 143/294 cut-off events. [2025-02-08 14:13:15,445 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-08 14:13:15,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 294 events. 143/294 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1241 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 517. Up to 191 conditions per place. [2025-02-08 14:13:15,448 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 23 selfloop transitions, 2 changer transitions 2/33 dead transitions. [2025-02-08 14:13:15,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 135 flow [2025-02-08 14:13:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-02-08 14:13:15,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:13:15,457 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 59 flow. Second operand 3 states and 58 transitions. [2025-02-08 14:13:15,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 135 flow [2025-02-08 14:13:15,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 127 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:15,462 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 72 flow [2025-02-08 14:13:15,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2025-02-08 14:13:15,468 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2025-02-08 14:13:15,468 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 72 flow [2025-02-08 14:13:15,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:15,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:15,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:13:15,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:15,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1574489244, now seen corresponding path program 1 times [2025-02-08 14:13:15,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:15,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361427829] [2025-02-08 14:13:15,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:15,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:15,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:13:15,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:13:15,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:15,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:15,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361427829] [2025-02-08 14:13:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361427829] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:15,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:13:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794554513] [2025-02-08 14:13:15,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:15,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:15,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:15,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:15,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:13:15,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-02-08 14:13:15,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:15,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-02-08 14:13:15,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:15,682 INFO L124 PetriNetUnfolderBase]: 243/472 cut-off events. [2025-02-08 14:13:15,682 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-02-08 14:13:15,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 472 events. 243/472 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2197 event pairs, 111 based on Foata normal form. 14/401 useless extension candidates. Maximal degree in co-relation 535. Up to 337 conditions per place. [2025-02-08 14:13:15,686 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 39 selfloop transitions, 3 changer transitions 1/46 dead transitions. [2025-02-08 14:13:15,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 216 flow [2025-02-08 14:13:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-02-08 14:13:15,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2025-02-08 14:13:15,687 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 72 flow. Second operand 4 states and 65 transitions. [2025-02-08 14:13:15,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 216 flow [2025-02-08 14:13:15,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:15,689 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 94 flow [2025-02-08 14:13:15,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2025-02-08 14:13:15,689 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2025-02-08 14:13:15,690 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 94 flow [2025-02-08 14:13:15,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:15,690 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:15,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:13:15,691 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:15,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash -3947982, now seen corresponding path program 1 times [2025-02-08 14:13:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679941397] [2025-02-08 14:13:15,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:15,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:13:15,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:13:15,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:15,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679941397] [2025-02-08 14:13:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679941397] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224271510] [2025-02-08 14:13:15,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:15,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:15,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:15,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:15,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:15,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:15,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:15,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:15,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:15,803 INFO L124 PetriNetUnfolderBase]: 130/246 cut-off events. [2025-02-08 14:13:15,803 INFO L125 PetriNetUnfolderBase]: For 87/112 co-relation queries the response was YES. [2025-02-08 14:13:15,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 246 events. 130/246 cut-off events. For 87/112 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1039 event pairs, 101 based on Foata normal form. 9/212 useless extension candidates. Maximal degree in co-relation 418. Up to 224 conditions per place. [2025-02-08 14:13:15,807 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2025-02-08 14:13:15,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 128 flow [2025-02-08 14:13:15,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:15,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-02-08 14:13:15,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2025-02-08 14:13:15,810 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 94 flow. Second operand 3 states and 42 transitions. [2025-02-08 14:13:15,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 128 flow [2025-02-08 14:13:15,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:15,812 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 90 flow [2025-02-08 14:13:15,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2025-02-08 14:13:15,812 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2025-02-08 14:13:15,812 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 90 flow [2025-02-08 14:13:15,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:15,812 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:15,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:13:15,813 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:15,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash 261647631, now seen corresponding path program 1 times [2025-02-08 14:13:15,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:15,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779922775] [2025-02-08 14:13:15,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:15,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:15,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:13:15,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:13:15,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:15,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779922775] [2025-02-08 14:13:15,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779922775] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:15,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:15,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:15,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391953422] [2025-02-08 14:13:15,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:15,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:15,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:15,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:15,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:15,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:15,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:15,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:15,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:15,949 INFO L124 PetriNetUnfolderBase]: 180/347 cut-off events. [2025-02-08 14:13:15,949 INFO L125 PetriNetUnfolderBase]: For 111/148 co-relation queries the response was YES. [2025-02-08 14:13:15,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 347 events. 180/347 cut-off events. For 111/148 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1580 event pairs, 101 based on Foata normal form. 26/322 useless extension candidates. Maximal degree in co-relation 821. Up to 225 conditions per place. [2025-02-08 14:13:15,952 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 29 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2025-02-08 14:13:15,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 193 flow [2025-02-08 14:13:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2025-02-08 14:13:15,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2025-02-08 14:13:15,953 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 90 flow. Second operand 3 states and 53 transitions. [2025-02-08 14:13:15,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 193 flow [2025-02-08 14:13:15,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:15,954 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 103 flow [2025-02-08 14:13:15,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2025-02-08 14:13:15,955 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-02-08 14:13:15,955 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 103 flow [2025-02-08 14:13:15,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:15,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:15,955 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:15,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:13:15,955 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:15,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 271417764, now seen corresponding path program 1 times [2025-02-08 14:13:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436279492] [2025-02-08 14:13:15,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:15,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:15,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:13:15,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:13:15,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:15,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:16,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436279492] [2025-02-08 14:13:16,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436279492] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:16,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:16,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438218721] [2025-02-08 14:13:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:16,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:16,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:16,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:16,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:16,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:16,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:16,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:16,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:16,044 INFO L124 PetriNetUnfolderBase]: 157/301 cut-off events. [2025-02-08 14:13:16,044 INFO L125 PetriNetUnfolderBase]: For 179/216 co-relation queries the response was YES. [2025-02-08 14:13:16,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 301 events. 157/301 cut-off events. For 179/216 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1305 event pairs, 126 based on Foata normal form. 13/281 useless extension candidates. Maximal degree in co-relation 796. Up to 269 conditions per place. [2025-02-08 14:13:16,046 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2025-02-08 14:13:16,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 137 flow [2025-02-08 14:13:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-02-08 14:13:16,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2025-02-08 14:13:16,049 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 103 flow. Second operand 3 states and 41 transitions. [2025-02-08 14:13:16,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 137 flow [2025-02-08 14:13:16,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:16,051 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 99 flow [2025-02-08 14:13:16,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2025-02-08 14:13:16,051 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-02-08 14:13:16,051 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 99 flow [2025-02-08 14:13:16,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:16,051 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:16,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:13:16,052 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:16,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 271417765, now seen corresponding path program 1 times [2025-02-08 14:13:16,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:16,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211943458] [2025-02-08 14:13:16,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:16,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:16,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:13:16,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:13:16,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:16,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:16,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211943458] [2025-02-08 14:13:16,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211943458] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:16,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677443155] [2025-02-08 14:13:16,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:16,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:16,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:16,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:16,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:13:16,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:13:16,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:13:16,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:16,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:16,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:13:16,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677443155] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:16,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-02-08 14:13:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510870615] [2025-02-08 14:13:16,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:16,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:13:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:16,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:13:16,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:13:16,230 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:16,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 99 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:16,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:16,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:16,395 INFO L124 PetriNetUnfolderBase]: 406/1005 cut-off events. [2025-02-08 14:13:16,395 INFO L125 PetriNetUnfolderBase]: For 411/423 co-relation queries the response was YES. [2025-02-08 14:13:16,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 1005 events. 406/1005 cut-off events. For 411/423 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5761 event pairs, 37 based on Foata normal form. 17/962 useless extension candidates. Maximal degree in co-relation 2424. Up to 187 conditions per place. [2025-02-08 14:13:16,400 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 61 selfloop transitions, 15 changer transitions 2/85 dead transitions. [2025-02-08 14:13:16,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 85 transitions, 470 flow [2025-02-08 14:13:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:13:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:13:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2025-02-08 14:13:16,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6502463054187192 [2025-02-08 14:13:16,405 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 99 flow. Second operand 7 states and 132 transitions. [2025-02-08 14:13:16,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 85 transitions, 470 flow [2025-02-08 14:13:16,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 85 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:13:16,407 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 248 flow [2025-02-08 14:13:16,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2025-02-08 14:13:16,408 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2025-02-08 14:13:16,408 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 248 flow [2025-02-08 14:13:16,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:16,408 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:16,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:16,613 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 [2025-02-08 14:13:16,613 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:16,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1759703677, now seen corresponding path program 1 times [2025-02-08 14:13:16,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:16,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340970517] [2025-02-08 14:13:16,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:16,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:16,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:16,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:16,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340970517] [2025-02-08 14:13:16,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340970517] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009858938] [2025-02-08 14:13:16,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:16,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:16,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:16,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:16,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:13:16,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:16,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:16,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:16,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:16,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:16,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009858938] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:16,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 14:13:16,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2025-02-08 14:13:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104642412] [2025-02-08 14:13:16,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:16,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:16,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:16,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:13:16,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:16,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:16,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:16,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:16,933 INFO L124 PetriNetUnfolderBase]: 358/768 cut-off events. [2025-02-08 14:13:16,933 INFO L125 PetriNetUnfolderBase]: For 1473/1534 co-relation queries the response was YES. [2025-02-08 14:13:16,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 768 events. 358/768 cut-off events. For 1473/1534 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3931 event pairs, 68 based on Foata normal form. 11/761 useless extension candidates. Maximal degree in co-relation 2329. Up to 510 conditions per place. [2025-02-08 14:13:16,939 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 41 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2025-02-08 14:13:16,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 390 flow [2025-02-08 14:13:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2025-02-08 14:13:16,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2025-02-08 14:13:16,941 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 248 flow. Second operand 4 states and 59 transitions. [2025-02-08 14:13:16,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 390 flow [2025-02-08 14:13:16,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 376 flow, removed 7 selfloop flow, removed 0 redundant places. [2025-02-08 14:13:16,945 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 246 flow [2025-02-08 14:13:16,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2025-02-08 14:13:16,946 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2025-02-08 14:13:16,946 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 246 flow [2025-02-08 14:13:16,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:16,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:16,946 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:16,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:13:17,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:17,151 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:17,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1751739216, now seen corresponding path program 1 times [2025-02-08 14:13:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222075915] [2025-02-08 14:13:17,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:17,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:17,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:17,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:17,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:17,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:17,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222075915] [2025-02-08 14:13:17,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222075915] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:17,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526831206] [2025-02-08 14:13:17,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:17,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:17,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:17,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:17,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:13:17,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:17,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:17,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:17,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:17,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:13:17,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:13:17,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:17,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526831206] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:17,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:17,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2025-02-08 14:13:17,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333376794] [2025-02-08 14:13:17,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:17,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:13:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:17,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:13:17,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:13:17,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 14:13:17,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:17,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:17,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 14:13:17,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:17,391 INFO L124 PetriNetUnfolderBase]: 423/788 cut-off events. [2025-02-08 14:13:17,391 INFO L125 PetriNetUnfolderBase]: For 1397/1478 co-relation queries the response was YES. [2025-02-08 14:13:17,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 788 events. 423/788 cut-off events. For 1397/1478 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3760 event pairs, 145 based on Foata normal form. 38/731 useless extension candidates. Maximal degree in co-relation 2432. Up to 366 conditions per place. [2025-02-08 14:13:17,397 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 30 selfloop transitions, 10 changer transitions 4/50 dead transitions. [2025-02-08 14:13:17,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 378 flow [2025-02-08 14:13:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:13:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:13:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2025-02-08 14:13:17,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45689655172413796 [2025-02-08 14:13:17,398 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 246 flow. Second operand 4 states and 53 transitions. [2025-02-08 14:13:17,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 378 flow [2025-02-08 14:13:17,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 360 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:17,406 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 225 flow [2025-02-08 14:13:17,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2025-02-08 14:13:17,406 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2025-02-08 14:13:17,406 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 225 flow [2025-02-08 14:13:17,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:17,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:17,406 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:17,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:13:17,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:17,609 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:17,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1160524984, now seen corresponding path program 1 times [2025-02-08 14:13:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:17,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522164410] [2025-02-08 14:13:17,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:17,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:17,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:17,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:17,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:17,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:17,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522164410] [2025-02-08 14:13:17,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522164410] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:17,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896323515] [2025-02-08 14:13:17,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:17,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:17,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:17,661 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:17,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:13:17,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:13:17,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:13:17,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:17,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:17,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:17,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:17,753 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:13:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896323515] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:17,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:13:17,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:13:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029899072] [2025-02-08 14:13:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:17,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:13:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:17,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:13:17,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:13:17,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-02-08 14:13:17,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:17,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:17,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-02-08 14:13:17,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:17,914 INFO L124 PetriNetUnfolderBase]: 362/749 cut-off events. [2025-02-08 14:13:17,915 INFO L125 PetriNetUnfolderBase]: For 1835/1867 co-relation queries the response was YES. [2025-02-08 14:13:17,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 749 events. 362/749 cut-off events. For 1835/1867 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3259 event pairs, 4 based on Foata normal form. 44/749 useless extension candidates. Maximal degree in co-relation 2380. Up to 281 conditions per place. [2025-02-08 14:13:17,919 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 58 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2025-02-08 14:13:17,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 589 flow [2025-02-08 14:13:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:13:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:13:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2025-02-08 14:13:17,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2025-02-08 14:13:17,920 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 225 flow. Second operand 6 states and 72 transitions. [2025-02-08 14:13:17,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 589 flow [2025-02-08 14:13:17,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 561 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:17,923 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 221 flow [2025-02-08 14:13:17,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2025-02-08 14:13:17,925 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2025-02-08 14:13:17,925 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 221 flow [2025-02-08 14:13:17,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:17,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:17,927 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:13:17,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:13:18,127 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,SelfDestructingSolverStorable8 [2025-02-08 14:13:18,128 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:18,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1616535947, now seen corresponding path program 1 times [2025-02-08 14:13:18,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:18,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826217384] [2025-02-08 14:13:18,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:18,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:13:18,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:13:18,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:18,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:18,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826217384] [2025-02-08 14:13:18,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826217384] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181868210] [2025-02-08 14:13:18,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:18,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:18,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:18,192 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:18,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:13:18,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:13:18,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:13:18,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:18,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:18,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:13:18,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:18,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:18,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181868210] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:18,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:18,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:13:18,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13601619] [2025-02-08 14:13:18,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:18,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:13:18,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:18,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:13:18,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:13:18,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2025-02-08 14:13:18,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 221 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:18,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:18,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2025-02-08 14:13:18,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:18,527 INFO L124 PetriNetUnfolderBase]: 560/1164 cut-off events. [2025-02-08 14:13:18,528 INFO L125 PetriNetUnfolderBase]: For 2661/2689 co-relation queries the response was YES. [2025-02-08 14:13:18,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1164 events. 560/1164 cut-off events. For 2661/2689 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5479 event pairs, 122 based on Foata normal form. 72/1234 useless extension candidates. Maximal degree in co-relation 3769. Up to 356 conditions per place. [2025-02-08 14:13:18,537 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 105 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2025-02-08 14:13:18,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 118 transitions, 1006 flow [2025-02-08 14:13:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:13:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:13:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2025-02-08 14:13:18,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2025-02-08 14:13:18,540 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 221 flow. Second operand 10 states and 127 transitions. [2025-02-08 14:13:18,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 118 transitions, 1006 flow [2025-02-08 14:13:18,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 118 transitions, 991 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 14:13:18,546 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 276 flow [2025-02-08 14:13:18,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2025-02-08 14:13:18,547 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2025-02-08 14:13:18,547 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 276 flow [2025-02-08 14:13:18,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:18,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:18,547 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2025-02-08 14:13:18,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 14:13:18,748 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,SelfDestructingSolverStorable9 [2025-02-08 14:13:18,748 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:18,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1814347513, now seen corresponding path program 2 times [2025-02-08 14:13:18,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:18,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74307907] [2025-02-08 14:13:18,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:18,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:18,753 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-08 14:13:18,757 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:13:18,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:13:18,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:18,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74307907] [2025-02-08 14:13:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74307907] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388926594] [2025-02-08 14:13:18,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:18,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:18,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:18,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:18,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:13:18,857 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-08 14:13:18,867 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:13:18,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:13:18,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:18,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 14:13:18,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:18,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:18,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388926594] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:18,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:13:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76366973] [2025-02-08 14:13:18,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:18,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 14:13:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:18,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 14:13:18,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 14:13:18,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:18,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:18,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:18,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:18,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:19,254 INFO L124 PetriNetUnfolderBase]: 759/1971 cut-off events. [2025-02-08 14:13:19,254 INFO L125 PetriNetUnfolderBase]: For 7022/7124 co-relation queries the response was YES. [2025-02-08 14:13:19,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6695 conditions, 1971 events. 759/1971 cut-off events. For 7022/7124 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11710 event pairs, 29 based on Foata normal form. 88/2044 useless extension candidates. Maximal degree in co-relation 6672. Up to 365 conditions per place. [2025-02-08 14:13:19,311 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 96 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2025-02-08 14:13:19,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 146 transitions, 1222 flow [2025-02-08 14:13:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:13:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:13:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2025-02-08 14:13:19,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5570291777188329 [2025-02-08 14:13:19,314 INFO L175 Difference]: Start difference. First operand has 58 places, 39 transitions, 276 flow. Second operand 13 states and 210 transitions. [2025-02-08 14:13:19,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 146 transitions, 1222 flow [2025-02-08 14:13:19,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 146 transitions, 1193 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:19,326 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 762 flow [2025-02-08 14:13:19,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=762, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2025-02-08 14:13:19,326 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2025-02-08 14:13:19,327 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 762 flow [2025-02-08 14:13:19,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:19,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:19,327 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-02-08 14:13:19,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:13:19,531 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,SelfDestructingSolverStorable10 [2025-02-08 14:13:19,531 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:19,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -936415071, now seen corresponding path program 2 times [2025-02-08 14:13:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:19,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466126111] [2025-02-08 14:13:19,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:19,536 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 14:13:19,537 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-02-08 14:13:19,537 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:13:19,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-08 14:13:19,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:19,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466126111] [2025-02-08 14:13:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466126111] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094376676] [2025-02-08 14:13:19,560 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:13:19,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:19,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:19,562 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:19,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 14:13:19,590 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 14:13:19,595 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-02-08 14:13:19,595 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:13:19,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:19,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:13:19,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-08 14:13:19,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-08 14:13:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094376676] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:19,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:19,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:13:19,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876505249] [2025-02-08 14:13:19,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:19,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:13:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:19,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:13:19,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:13:19,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-02-08 14:13:19,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 762 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:19,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:19,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-02-08 14:13:19,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:19,988 INFO L124 PetriNetUnfolderBase]: 1482/2823 cut-off events. [2025-02-08 14:13:19,988 INFO L125 PetriNetUnfolderBase]: For 12747/12837 co-relation queries the response was YES. [2025-02-08 14:13:20,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10701 conditions, 2823 events. 1482/2823 cut-off events. For 12747/12837 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14050 event pairs, 230 based on Foata normal form. 126/2949 useless extension candidates. Maximal degree in co-relation 10666. Up to 1240 conditions per place. [2025-02-08 14:13:20,016 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 120 selfloop transitions, 13 changer transitions 0/136 dead transitions. [2025-02-08 14:13:20,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 136 transitions, 1766 flow [2025-02-08 14:13:20,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:13:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:13:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2025-02-08 14:13:20,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3310344827586207 [2025-02-08 14:13:20,018 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 762 flow. Second operand 5 states and 48 transitions. [2025-02-08 14:13:20,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 136 transitions, 1766 flow [2025-02-08 14:13:20,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 136 transitions, 1515 flow, removed 117 selfloop flow, removed 6 redundant places. [2025-02-08 14:13:20,044 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 671 flow [2025-02-08 14:13:20,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=671, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2025-02-08 14:13:20,045 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2025-02-08 14:13:20,045 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 671 flow [2025-02-08 14:13:20,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:20,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:20,045 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2025-02-08 14:13:20,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 14:13:20,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:20,248 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:20,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:20,249 INFO L85 PathProgramCache]: Analyzing trace with hash 785965433, now seen corresponding path program 3 times [2025-02-08 14:13:20,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:20,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382743822] [2025-02-08 14:13:20,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:13:20,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:20,256 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 11 equivalence classes. [2025-02-08 14:13:20,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 14:13:20,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-08 14:13:20,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:20,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:20,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382743822] [2025-02-08 14:13:20,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382743822] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:20,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994227817] [2025-02-08 14:13:20,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:13:20,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:20,483 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:20,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:13:20,523 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 11 equivalence classes. [2025-02-08 14:13:20,548 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 14:13:20,549 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-08 14:13:20,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:20,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 14:13:20,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:20,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:20,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994227817] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:20,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:20,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-08 14:13:20,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937691777] [2025-02-08 14:13:20,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:20,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 14:13:20,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:20,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 14:13:20,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-08 14:13:20,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:20,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 671 flow. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:20,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:20,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:20,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:21,827 INFO L124 PetriNetUnfolderBase]: 1587/4033 cut-off events. [2025-02-08 14:13:21,827 INFO L125 PetriNetUnfolderBase]: For 34223/34379 co-relation queries the response was YES. [2025-02-08 14:13:21,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14577 conditions, 4033 events. 1587/4033 cut-off events. For 34223/34379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22953 event pairs, 31 based on Foata normal form. 184/4188 useless extension candidates. Maximal degree in co-relation 14545. Up to 803 conditions per place. [2025-02-08 14:13:21,874 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 170 selfloop transitions, 144 changer transitions 0/324 dead transitions. [2025-02-08 14:13:21,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 324 transitions, 2977 flow [2025-02-08 14:13:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 14:13:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-08 14:13:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 414 transitions. [2025-02-08 14:13:21,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5710344827586207 [2025-02-08 14:13:21,876 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 671 flow. Second operand 25 states and 414 transitions. [2025-02-08 14:13:21,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 324 transitions, 2977 flow [2025-02-08 14:13:21,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 324 transitions, 2927 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:13:21,908 INFO L231 Difference]: Finished difference. Result has 119 places, 180 transitions, 2232 flow [2025-02-08 14:13:21,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2232, PETRI_PLACES=119, PETRI_TRANSITIONS=180} [2025-02-08 14:13:21,908 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2025-02-08 14:13:21,909 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 180 transitions, 2232 flow [2025-02-08 14:13:21,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:21,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:21,909 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2025-02-08 14:13:21,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 14:13:22,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:22,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:22,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash 341771897, now seen corresponding path program 4 times [2025-02-08 14:13:22,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:22,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199296323] [2025-02-08 14:13:22,111 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:13:22,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:22,125 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 115 statements into 2 equivalence classes. [2025-02-08 14:13:22,151 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-02-08 14:13:22,153 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:13:22,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199296323] [2025-02-08 14:13:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199296323] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310364772] [2025-02-08 14:13:22,748 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:13:22,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:22,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:22,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:22,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 14:13:22,792 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 115 statements into 2 equivalence classes. [2025-02-08 14:13:22,824 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 115 of 115 statements. [2025-02-08 14:13:22,824 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:13:22,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:22,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 14:13:22,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:23,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:23,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310364772] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:23,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:23,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2025-02-08 14:13:23,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116650954] [2025-02-08 14:13:23,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:23,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-08 14:13:23,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:23,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-08 14:13:23,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-08 14:13:23,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:23,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 180 transitions, 2232 flow. Second operand has 49 states, 49 states have (on average 10.040816326530612) internal successors, (492), 49 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:23,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:23,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:23,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:26,164 INFO L124 PetriNetUnfolderBase]: 4119/10683 cut-off events. [2025-02-08 14:13:26,164 INFO L125 PetriNetUnfolderBase]: For 274849/275187 co-relation queries the response was YES. [2025-02-08 14:13:26,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40268 conditions, 10683 events. 4119/10683 cut-off events. For 274849/275187 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 66734 event pairs, 57 based on Foata normal form. 376/11026 useless extension candidates. Maximal degree in co-relation 40213. Up to 2433 conditions per place. [2025-02-08 14:13:26,256 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 316 selfloop transitions, 500 changer transitions 0/826 dead transitions. [2025-02-08 14:13:26,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 826 transitions, 9742 flow [2025-02-08 14:13:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-08 14:13:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-02-08 14:13:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 822 transitions. [2025-02-08 14:13:26,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5784658691062632 [2025-02-08 14:13:26,259 INFO L175 Difference]: Start difference. First operand has 119 places, 180 transitions, 2232 flow. Second operand 49 states and 822 transitions. [2025-02-08 14:13:26,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 826 transitions, 9742 flow [2025-02-08 14:13:26,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 826 transitions, 7991 flow, removed 852 selfloop flow, removed 5 redundant places. [2025-02-08 14:13:26,517 INFO L231 Difference]: Finished difference. Result has 208 places, 538 transitions, 7092 flow [2025-02-08 14:13:26,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7092, PETRI_PLACES=208, PETRI_TRANSITIONS=538} [2025-02-08 14:13:26,521 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2025-02-08 14:13:26,521 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 538 transitions, 7092 flow [2025-02-08 14:13:26,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 10.040816326530612) internal successors, (492), 49 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:26,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:26,522 INFO L206 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2025-02-08 14:13:26,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 14:13:26,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:26,726 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:26,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash 306368633, now seen corresponding path program 5 times [2025-02-08 14:13:26,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:26,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135725737] [2025-02-08 14:13:26,729 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 14:13:26,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:26,743 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 235 statements into 47 equivalence classes. [2025-02-08 14:13:26,871 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 235 of 235 statements. [2025-02-08 14:13:26,872 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-02-08 14:13:26,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135725737] [2025-02-08 14:13:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135725737] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575088645] [2025-02-08 14:13:28,632 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 14:13:28,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:28,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:28,634 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:28,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 14:13:28,676 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 235 statements into 47 equivalence classes. [2025-02-08 14:13:28,752 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 235 of 235 statements. [2025-02-08 14:13:28,752 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-02-08 14:13:28,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:28,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-08 14:13:28,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:29,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:13:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575088645] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:13:31,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:13:31,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2025-02-08 14:13:31,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412050876] [2025-02-08 14:13:31,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:13:31,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-08 14:13:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:31,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-08 14:13:31,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-08 14:13:31,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:13:31,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 538 transitions, 7092 flow. Second operand has 96 states, 96 states have (on average 10.0) internal successors, (960), 96 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:31,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:31,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:13:31,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:43,419 INFO L124 PetriNetUnfolderBase]: 12651/33281 cut-off events. [2025-02-08 14:13:43,420 INFO L125 PetriNetUnfolderBase]: For 2190435/2191145 co-relation queries the response was YES. [2025-02-08 14:13:44,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125481 conditions, 33281 events. 12651/33281 cut-off events. For 2190435/2191145 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 240978 event pairs, 177 based on Foata normal form. 760/34040 useless extension candidates. Maximal degree in co-relation 125383. Up to 8011 conditions per place. [2025-02-08 14:13:44,154 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 604 selfloop transitions, 1792 changer transitions 0/2406 dead transitions. [2025-02-08 14:13:44,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 2406 transitions, 31114 flow [2025-02-08 14:13:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-08 14:13:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2025-02-08 14:13:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1626 transitions. [2025-02-08 14:13:44,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584051724137931 [2025-02-08 14:13:44,159 INFO L175 Difference]: Start difference. First operand has 208 places, 538 transitions, 7092 flow. Second operand 96 states and 1626 transitions. [2025-02-08 14:13:44,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 2406 transitions, 31114 flow [2025-02-08 14:13:45,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 2406 transitions, 24595 flow, removed 3150 selfloop flow, removed 11 redundant places. [2025-02-08 14:13:45,103 INFO L231 Difference]: Finished difference. Result has 386 places, 1832 transitions, 24462 flow [2025-02-08 14:13:45,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=24462, PETRI_PLACES=386, PETRI_TRANSITIONS=1832} [2025-02-08 14:13:45,104 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2025-02-08 14:13:45,104 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 1832 transitions, 24462 flow [2025-02-08 14:13:45,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 10.0) internal successors, (960), 96 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:45,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:45,105 INFO L206 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2025-02-08 14:13:45,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 14:13:45,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 14:13:45,305 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:13:45,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1013474425, now seen corresponding path program 6 times [2025-02-08 14:13:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:45,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545840308] [2025-02-08 14:13:45,308 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 14:13:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:45,338 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 475 statements into 95 equivalence classes. [2025-02-08 14:13:45,882 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 475 of 475 statements. [2025-02-08 14:13:45,882 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-02-08 14:13:45,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:51,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545840308] [2025-02-08 14:13:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545840308] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:13:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628420425] [2025-02-08 14:13:51,354 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 14:13:51,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:13:51,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:13:51,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:13:51,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 14:13:51,426 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 475 statements into 95 equivalence classes. [2025-02-08 14:13:51,635 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 475 of 475 statements. [2025-02-08 14:13:51,635 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-02-08 14:13:51,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:51,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 97 conjuncts are in the unsatisfiable core [2025-02-08 14:13:51,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:13:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:13:52,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:14:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:14:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628420425] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:14:00,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:14:00,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2025-02-08 14:14:00,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687648542] [2025-02-08 14:14:00,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:14:00,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-08 14:14:00,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:14:00,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-08 14:14:00,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-08 14:14:00,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 14:14:00,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1832 transitions, 24462 flow. Second operand has 193 states, 193 states have (on average 10.010362694300518) internal successors, (1932), 193 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:14:00,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:14:00,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 14:14:00,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand