./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-array-int-symm.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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:47:16,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:47:16,796 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:47:16,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:47:16,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:47:16,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:47:16,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:47:16,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:47:16,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:47:16,825 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:47:16,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:47:16,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:47:16,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:47:16,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:47:16,826 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:47:16,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:47:16,827 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:47:16,828 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:47:16,828 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:47:16,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:47:16,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:47:16,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:47:16,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:47:16,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:47:16,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:47:16,828 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:47:16,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:47:16,829 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:47:16,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:47:16,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:47:16,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:47:16,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:47:16,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:47:16,829 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 -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2025-02-06 18:47:17,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:47:17,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:47:17,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:47:17,051 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:47:17,051 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:47:17,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2025-02-06 18:47:18,192 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d1899c536/1be692c35e1b44edba99b5382d86f0b9/FLAG6834cc254 [2025-02-06 18:47:18,417 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:47:18,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2025-02-06 18:47:18,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d1899c536/1be692c35e1b44edba99b5382d86f0b9/FLAG6834cc254 [2025-02-06 18:47:18,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d1899c536/1be692c35e1b44edba99b5382d86f0b9 [2025-02-06 18:47:18,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:47:18,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:47:18,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:47:18,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:47:18,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:47:18,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:18,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543a3ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18, skipping insertion in model container [2025-02-06 18:47:18,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:18,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:47:18,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:47:18,922 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:47:18,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:47:18,960 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:47:18,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18 WrapperNode [2025-02-06 18:47:18,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:47:18,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:47:18,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:47:18,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:47:18,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:18,975 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,000 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 223 [2025-02-06 18:47:19,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:47:19,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:47:19,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:47:19,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:47:19,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,015 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,033 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-06 18:47:19,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,044 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:47:19,055 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:47:19,055 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:47:19,056 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:47:19,058 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (1/1) ... [2025-02-06 18:47:19,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:47:19,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:19,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:47:19,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:47:19,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:47:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:47:19,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:47:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:47:19,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:47:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:47:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:47:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:47:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:47:19,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:47:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:47:19,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:47:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:47:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:47:19,104 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:47:19,198 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:47:19,199 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:47:19,522 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:47:19,523 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:47:19,700 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:47:19,700 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:47:19,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:47:19 BoogieIcfgContainer [2025-02-06 18:47:19,701 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:47:19,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:47:19,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:47:19,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:47:19,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:47:18" (1/3) ... [2025-02-06 18:47:19,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1184a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:47:19, skipping insertion in model container [2025-02-06 18:47:19,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:47:18" (2/3) ... [2025-02-06 18:47:19,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1184a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:47:19, skipping insertion in model container [2025-02-06 18:47:19,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:47:19" (3/3) ... [2025-02-06 18:47:19,708 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2025-02-06 18:47:19,718 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:47:19,719 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-symm.wvr.c that has 3 procedures, 77 locations, 1 initial locations, 4 loop locations, and 24 error locations. [2025-02-06 18:47:19,720 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:47:19,774 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:47:19,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2025-02-06 18:47:19,853 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2025-02-06 18:47:19,855 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:47:19,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 284 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2025-02-06 18:47:19,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2025-02-06 18:47:19,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 173 flow [2025-02-06 18:47:19,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:47:19,876 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;@a503bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:47:19,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2025-02-06 18:47:19,879 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:47:19,879 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:47:19,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:47:19,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:19,880 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:47:19,880 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:19,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 643625, now seen corresponding path program 1 times [2025-02-06 18:47:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979969892] [2025-02-06 18:47:19,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:19,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:47:19,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:47:19,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:19,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979969892] [2025-02-06 18:47:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979969892] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:20,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:20,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652828414] [2025-02-06 18:47:20,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:20,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:20,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:20,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:20,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:20,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2025-02-06 18:47:20,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:20,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:20,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2025-02-06 18:47:20,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:20,343 INFO L124 PetriNetUnfolderBase]: 501/1325 cut-off events. [2025-02-06 18:47:20,344 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-02-06 18:47:20,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 1325 events. 501/1325 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9352 event pairs, 311 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 2032. Up to 752 conditions per place. [2025-02-06 18:47:20,356 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 32 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2025-02-06 18:47:20,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 245 flow [2025-02-06 18:47:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2025-02-06 18:47:20,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2025-02-06 18:47:20,373 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 173 flow. Second operand 4 states and 216 transitions. [2025-02-06 18:47:20,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 245 flow [2025-02-06 18:47:20,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:20,383 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 176 flow [2025-02-06 18:47:20,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2025-02-06 18:47:20,388 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2025-02-06 18:47:20,388 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 176 flow [2025-02-06 18:47:20,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:20,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:20,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 18:47:20,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:47:20,388 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:20,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash 19952927, now seen corresponding path program 1 times [2025-02-06 18:47:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256249370] [2025-02-06 18:47:20,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:20,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:47:20,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:47:20,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:20,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:20,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256249370] [2025-02-06 18:47:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256249370] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:20,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:20,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:20,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760763843] [2025-02-06 18:47:20,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:20,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:20,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:20,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:20,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:20,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2025-02-06 18:47:20,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:20,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:20,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2025-02-06 18:47:20,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:20,646 INFO L124 PetriNetUnfolderBase]: 503/1333 cut-off events. [2025-02-06 18:47:20,646 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-06 18:47:20,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2133 conditions, 1333 events. 503/1333 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9418 event pairs, 311 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 2085. Up to 761 conditions per place. [2025-02-06 18:47:20,654 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 37 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2025-02-06 18:47:20,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 286 flow [2025-02-06 18:47:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 222 transitions. [2025-02-06 18:47:20,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2025-02-06 18:47:20,656 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 176 flow. Second operand 4 states and 222 transitions. [2025-02-06 18:47:20,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 286 flow [2025-02-06 18:47:20,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 264 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:20,659 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 220 flow [2025-02-06 18:47:20,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2025-02-06 18:47:20,659 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2025-02-06 18:47:20,659 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 220 flow [2025-02-06 18:47:20,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:20,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:20,660 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:47:20,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:47:20,660 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:20,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:20,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1996494061, now seen corresponding path program 1 times [2025-02-06 18:47:20,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:20,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488496784] [2025-02-06 18:47:20,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:20,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:47:20,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:47:20,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:20,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:20,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:20,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488496784] [2025-02-06 18:47:20,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488496784] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:20,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:20,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127162552] [2025-02-06 18:47:20,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:20,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:20,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:20,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:20,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:20,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2025-02-06 18:47:20,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:20,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:20,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2025-02-06 18:47:20,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:21,155 INFO L124 PetriNetUnfolderBase]: 1197/3047 cut-off events. [2025-02-06 18:47:21,155 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-02-06 18:47:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4921 conditions, 3047 events. 1197/3047 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25189 event pairs, 742 based on Foata normal form. 23/2404 useless extension candidates. Maximal degree in co-relation 2491. Up to 919 conditions per place. [2025-02-06 18:47:21,170 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 70 selfloop transitions, 7 changer transitions 0/117 dead transitions. [2025-02-06 18:47:21,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 440 flow [2025-02-06 18:47:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 296 transitions. [2025-02-06 18:47:21,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6883720930232559 [2025-02-06 18:47:21,173 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 220 flow. Second operand 5 states and 296 transitions. [2025-02-06 18:47:21,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 440 flow [2025-02-06 18:47:21,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 117 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:47:21,175 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 253 flow [2025-02-06 18:47:21,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2025-02-06 18:47:21,180 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2025-02-06 18:47:21,180 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 253 flow [2025-02-06 18:47:21,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:21,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:21,180 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:47:21,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:47:21,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:21,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1712809768, now seen corresponding path program 1 times [2025-02-06 18:47:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:21,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079123015] [2025-02-06 18:47:21,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:21,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:21,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:21,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:21,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:21,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079123015] [2025-02-06 18:47:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079123015] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:21,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510502574] [2025-02-06 18:47:21,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:21,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:21,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:21,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:21,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:47:21,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:21,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:21,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:21,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:21,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:21,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:21,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:21,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510502574] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:21,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:21,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-06 18:47:21,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056645817] [2025-02-06 18:47:21,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:21,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:47:21,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:21,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:47:21,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:47:21,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2025-02-06 18:47:21,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:21,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:21,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2025-02-06 18:47:21,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:21,736 INFO L124 PetriNetUnfolderBase]: 1014/2672 cut-off events. [2025-02-06 18:47:21,736 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-02-06 18:47:21,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4334 conditions, 2672 events. 1014/2672 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 21942 event pairs, 624 based on Foata normal form. 0/2105 useless extension candidates. Maximal degree in co-relation 2198. Up to 1514 conditions per place. [2025-02-06 18:47:21,747 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 37 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2025-02-06 18:47:21,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 461 flow [2025-02-06 18:47:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:47:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:47:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 508 transitions. [2025-02-06 18:47:21,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5906976744186047 [2025-02-06 18:47:21,749 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 253 flow. Second operand 10 states and 508 transitions. [2025-02-06 18:47:21,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 461 flow [2025-02-06 18:47:21,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:47:21,751 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 415 flow [2025-02-06 18:47:21,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2025-02-06 18:47:21,753 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2025-02-06 18:47:21,753 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 415 flow [2025-02-06 18:47:21,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:21,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:21,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:21,760 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 [2025-02-06 18:47:21,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:21,954 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:21,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:21,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1761774360, now seen corresponding path program 1 times [2025-02-06 18:47:21,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:21,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232163910] [2025-02-06 18:47:21,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:21,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:47:21,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:47:21,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:21,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:22,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:22,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232163910] [2025-02-06 18:47:22,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232163910] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:22,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:22,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:47:22,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961393203] [2025-02-06 18:47:22,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:22,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:22,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:22,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:22,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:22,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2025-02-06 18:47:22,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:22,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:22,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2025-02-06 18:47:22,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:22,662 INFO L124 PetriNetUnfolderBase]: 2245/5736 cut-off events. [2025-02-06 18:47:22,664 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2025-02-06 18:47:22,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9560 conditions, 5736 events. 2245/5736 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 53434 event pairs, 1365 based on Foata normal form. 86/4682 useless extension candidates. Maximal degree in co-relation 9463. Up to 1691 conditions per place. [2025-02-06 18:47:22,688 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 107 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2025-02-06 18:47:22,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 817 flow [2025-02-06 18:47:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2025-02-06 18:47:22,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7412790697674418 [2025-02-06 18:47:22,689 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 415 flow. Second operand 4 states and 255 transitions. [2025-02-06 18:47:22,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 817 flow [2025-02-06 18:47:22,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 152 transitions, 723 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-02-06 18:47:22,696 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 388 flow [2025-02-06 18:47:22,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2025-02-06 18:47:22,698 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2025-02-06 18:47:22,698 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 388 flow [2025-02-06 18:47:22,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:22,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:22,698 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:22,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:47:22,699 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:22,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1131259844, now seen corresponding path program 1 times [2025-02-06 18:47:22,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:22,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280128304] [2025-02-06 18:47:22,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:22,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:22,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:47:22,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:47:22,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:22,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280128304] [2025-02-06 18:47:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280128304] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096872442] [2025-02-06 18:47:22,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:22,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:22,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:22,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:47:22,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:47:22,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:47:22,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:22,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:22,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:22,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:22,952 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:47:22,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096872442] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:22,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:47:22,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-02-06 18:47:22,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079437845] [2025-02-06 18:47:22,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:22,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:47:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:22,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:47:22,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:47:22,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2025-02-06 18:47:22,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:22,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:22,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2025-02-06 18:47:22,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:23,270 INFO L124 PetriNetUnfolderBase]: 2014/5292 cut-off events. [2025-02-06 18:47:23,270 INFO L125 PetriNetUnfolderBase]: For 486/488 co-relation queries the response was YES. [2025-02-06 18:47:23,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8554 conditions, 5292 events. 2014/5292 cut-off events. For 486/488 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49519 event pairs, 1245 based on Foata normal form. 74/4246 useless extension candidates. Maximal degree in co-relation 8469. Up to 3046 conditions per place. [2025-02-06 18:47:23,294 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 59 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2025-02-06 18:47:23,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 480 flow [2025-02-06 18:47:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:47:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:47:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2025-02-06 18:47:23,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2025-02-06 18:47:23,296 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 388 flow. Second operand 3 states and 176 transitions. [2025-02-06 18:47:23,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 480 flow [2025-02-06 18:47:23,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 463 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:47:23,298 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 345 flow [2025-02-06 18:47:23,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2025-02-06 18:47:23,300 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2025-02-06 18:47:23,301 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 345 flow [2025-02-06 18:47:23,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:23,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:23,301 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:23,307 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 [2025-02-06 18:47:23,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:23,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:23,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2141032337, now seen corresponding path program 1 times [2025-02-06 18:47:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525998842] [2025-02-06 18:47:23,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:23,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:47:23,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:47:23,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:23,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:23,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:23,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525998842] [2025-02-06 18:47:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525998842] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:23,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994234309] [2025-02-06 18:47:23,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:23,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:23,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:23,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:23,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:47:23,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:47:23,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:47:23,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:23,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:23,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:47:23,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:23,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:47:23,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994234309] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:23,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:47:23,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2025-02-06 18:47:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108289595] [2025-02-06 18:47:23,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:23,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:23,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:23,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:23,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:47:23,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2025-02-06 18:47:23,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:23,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:23,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2025-02-06 18:47:23,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:24,038 INFO L124 PetriNetUnfolderBase]: 2008/5280 cut-off events. [2025-02-06 18:47:24,038 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2025-02-06 18:47:24,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8505 conditions, 5280 events. 2008/5280 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49432 event pairs, 1244 based on Foata normal form. 82/4243 useless extension candidates. Maximal degree in co-relation 8489. Up to 3035 conditions per place. [2025-02-06 18:47:24,060 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 54 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2025-02-06 18:47:24,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 100 transitions, 439 flow [2025-02-06 18:47:24,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 222 transitions. [2025-02-06 18:47:24,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2025-02-06 18:47:24,062 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 345 flow. Second operand 4 states and 222 transitions. [2025-02-06 18:47:24,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 100 transitions, 439 flow [2025-02-06 18:47:24,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 100 transitions, 433 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:47:24,064 INFO L231 Difference]: Finished difference. Result has 91 places, 100 transitions, 325 flow [2025-02-06 18:47:24,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=91, PETRI_TRANSITIONS=100} [2025-02-06 18:47:24,064 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2025-02-06 18:47:24,064 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 100 transitions, 325 flow [2025-02-06 18:47:24,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:24,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:24,064 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:24,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:24,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:24,269 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:24,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash 520273969, now seen corresponding path program 1 times [2025-02-06 18:47:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:24,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187565834] [2025-02-06 18:47:24,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:24,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:24,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:47:24,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:47:24,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:24,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187565834] [2025-02-06 18:47:24,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187565834] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:24,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:24,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:24,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217955172] [2025-02-06 18:47:24,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:24,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:24,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:24,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:24,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:24,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2025-02-06 18:47:24,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:24,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:24,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2025-02-06 18:47:24,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:24,933 INFO L124 PetriNetUnfolderBase]: 4048/9664 cut-off events. [2025-02-06 18:47:24,935 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2025-02-06 18:47:24,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16050 conditions, 9664 events. 4048/9664 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 93543 event pairs, 1796 based on Foata normal form. 104/7926 useless extension candidates. Maximal degree in co-relation 16036. Up to 3407 conditions per place. [2025-02-06 18:47:24,978 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 100 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2025-02-06 18:47:24,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 141 transitions, 618 flow [2025-02-06 18:47:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2025-02-06 18:47:24,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7703488372093024 [2025-02-06 18:47:24,979 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 325 flow. Second operand 4 states and 265 transitions. [2025-02-06 18:47:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 141 transitions, 618 flow [2025-02-06 18:47:24,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 611 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:24,984 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 340 flow [2025-02-06 18:47:24,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2025-02-06 18:47:24,984 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2025-02-06 18:47:24,984 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 340 flow [2025-02-06 18:47:24,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:24,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:24,984 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:24,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:47:24,985 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:24,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1051374463, now seen corresponding path program 1 times [2025-02-06 18:47:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974723046] [2025-02-06 18:47:24,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:24,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:47:24,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:47:24,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:24,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:25,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:25,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974723046] [2025-02-06 18:47:25,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974723046] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:25,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:25,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:25,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019787134] [2025-02-06 18:47:25,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:25,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:25,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:25,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:25,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:47:25,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:25,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:47:25,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:25,786 INFO L124 PetriNetUnfolderBase]: 6552/14644 cut-off events. [2025-02-06 18:47:25,786 INFO L125 PetriNetUnfolderBase]: For 762/794 co-relation queries the response was YES. [2025-02-06 18:47:25,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25799 conditions, 14644 events. 6552/14644 cut-off events. For 762/794 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 146232 event pairs, 2228 based on Foata normal form. 416/12485 useless extension candidates. Maximal degree in co-relation 25784. Up to 5371 conditions per place. [2025-02-06 18:47:25,841 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 96 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2025-02-06 18:47:25,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 135 transitions, 612 flow [2025-02-06 18:47:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2025-02-06 18:47:25,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7151162790697675 [2025-02-06 18:47:25,843 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 340 flow. Second operand 4 states and 246 transitions. [2025-02-06 18:47:25,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 135 transitions, 612 flow [2025-02-06 18:47:25,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 135 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:47:25,846 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 372 flow [2025-02-06 18:47:25,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2025-02-06 18:47:25,847 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2025-02-06 18:47:25,847 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 372 flow [2025-02-06 18:47:25,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:25,848 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:25,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:47:25,849 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:25,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 635663584, now seen corresponding path program 1 times [2025-02-06 18:47:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:25,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414526655] [2025-02-06 18:47:25,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:25,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:25,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:47:25,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:47:25,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:25,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:25,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:25,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414526655] [2025-02-06 18:47:25,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414526655] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:25,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:25,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952380045] [2025-02-06 18:47:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:25,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:25,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:25,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:25,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2025-02-06 18:47:25,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:25,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:25,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2025-02-06 18:47:25,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:27,068 INFO L124 PetriNetUnfolderBase]: 8564/20340 cut-off events. [2025-02-06 18:47:27,068 INFO L125 PetriNetUnfolderBase]: For 4902/5598 co-relation queries the response was YES. [2025-02-06 18:47:27,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37713 conditions, 20340 events. 8564/20340 cut-off events. For 4902/5598 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 220278 event pairs, 3396 based on Foata normal form. 456/17781 useless extension candidates. Maximal degree in co-relation 37696. Up to 7327 conditions per place. [2025-02-06 18:47:27,197 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 109 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2025-02-06 18:47:27,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 150 transitions, 750 flow [2025-02-06 18:47:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2025-02-06 18:47:27,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2025-02-06 18:47:27,199 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 372 flow. Second operand 4 states and 262 transitions. [2025-02-06 18:47:27,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 150 transitions, 750 flow [2025-02-06 18:47:27,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 150 transitions, 750 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:47:27,220 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 394 flow [2025-02-06 18:47:27,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2025-02-06 18:47:27,220 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 24 predicate places. [2025-02-06 18:47:27,220 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 394 flow [2025-02-06 18:47:27,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:27,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:27,221 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:27,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:47:27,221 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:27,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1767130646, now seen corresponding path program 1 times [2025-02-06 18:47:27,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:27,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667497166] [2025-02-06 18:47:27,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:27,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:47:27,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:47:27,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:27,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667497166] [2025-02-06 18:47:27,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667497166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:27,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:27,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:47:27,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678400293] [2025-02-06 18:47:27,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:27,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:27,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:27,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:27,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2025-02-06 18:47:27,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:27,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:27,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2025-02-06 18:47:27,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:27,977 INFO L124 PetriNetUnfolderBase]: 4512/11654 cut-off events. [2025-02-06 18:47:27,977 INFO L125 PetriNetUnfolderBase]: For 3228/3456 co-relation queries the response was YES. [2025-02-06 18:47:28,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22192 conditions, 11654 events. 4512/11654 cut-off events. For 3228/3456 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 120914 event pairs, 2814 based on Foata normal form. 172/10337 useless extension candidates. Maximal degree in co-relation 22172. Up to 6023 conditions per place. [2025-02-06 18:47:28,034 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 114 selfloop transitions, 4 changer transitions 2/160 dead transitions. [2025-02-06 18:47:28,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 160 transitions, 821 flow [2025-02-06 18:47:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2025-02-06 18:47:28,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7395348837209302 [2025-02-06 18:47:28,036 INFO L175 Difference]: Start difference. First operand has 103 places, 106 transitions, 394 flow. Second operand 5 states and 318 transitions. [2025-02-06 18:47:28,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 160 transitions, 821 flow [2025-02-06 18:47:28,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 160 transitions, 815 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:47:28,047 INFO L231 Difference]: Finished difference. Result has 108 places, 107 transitions, 411 flow [2025-02-06 18:47:28,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=108, PETRI_TRANSITIONS=107} [2025-02-06 18:47:28,047 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 29 predicate places. [2025-02-06 18:47:28,048 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 411 flow [2025-02-06 18:47:28,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:28,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:28,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:28,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:47:28,048 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:28,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1769263662, now seen corresponding path program 1 times [2025-02-06 18:47:28,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:28,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328121172] [2025-02-06 18:47:28,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:28,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:47:28,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:47:28,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:28,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:28,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328121172] [2025-02-06 18:47:28,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328121172] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:28,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:28,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583921703] [2025-02-06 18:47:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:28,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:28,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:28,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:28,099 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:47:28,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 107 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:28,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:28,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:47:28,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:29,070 INFO L124 PetriNetUnfolderBase]: 8114/17852 cut-off events. [2025-02-06 18:47:29,070 INFO L125 PetriNetUnfolderBase]: For 6347/6755 co-relation queries the response was YES. [2025-02-06 18:47:29,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36531 conditions, 17852 events. 8114/17852 cut-off events. For 6347/6755 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 178826 event pairs, 3072 based on Foata normal form. 648/16417 useless extension candidates. Maximal degree in co-relation 36508. Up to 6801 conditions per place. [2025-02-06 18:47:29,149 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 109 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2025-02-06 18:47:29,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 148 transitions, 803 flow [2025-02-06 18:47:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:29,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2025-02-06 18:47:29,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7093023255813954 [2025-02-06 18:47:29,150 INFO L175 Difference]: Start difference. First operand has 108 places, 107 transitions, 411 flow. Second operand 4 states and 244 transitions. [2025-02-06 18:47:29,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 148 transitions, 803 flow [2025-02-06 18:47:29,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 148 transitions, 798 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:29,179 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 440 flow [2025-02-06 18:47:29,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2025-02-06 18:47:29,179 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2025-02-06 18:47:29,180 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 440 flow [2025-02-06 18:47:29,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:29,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:29,180 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:29,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:47:29,180 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:29,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:29,181 INFO L85 PathProgramCache]: Analyzing trace with hash 987401989, now seen corresponding path program 1 times [2025-02-06 18:47:29,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:29,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698393162] [2025-02-06 18:47:29,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:29,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:29,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:47:29,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:47:29,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:29,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:29,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:29,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698393162] [2025-02-06 18:47:29,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698393162] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:29,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:29,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:47:29,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517379157] [2025-02-06 18:47:29,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:29,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:29,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:29,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:29,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:29,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2025-02-06 18:47:29,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:29,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:29,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2025-02-06 18:47:29,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:30,178 INFO L124 PetriNetUnfolderBase]: 5302/13644 cut-off events. [2025-02-06 18:47:30,179 INFO L125 PetriNetUnfolderBase]: For 6318/6722 co-relation queries the response was YES. [2025-02-06 18:47:30,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28715 conditions, 13644 events. 5302/13644 cut-off events. For 6318/6722 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 145632 event pairs, 3548 based on Foata normal form. 226/12541 useless extension candidates. Maximal degree in co-relation 28691. Up to 7629 conditions per place. [2025-02-06 18:47:30,252 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 75 selfloop transitions, 3 changer transitions 21/139 dead transitions. [2025-02-06 18:47:30,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 139 transitions, 754 flow [2025-02-06 18:47:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 299 transitions. [2025-02-06 18:47:30,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6953488372093023 [2025-02-06 18:47:30,254 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 440 flow. Second operand 5 states and 299 transitions. [2025-02-06 18:47:30,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 139 transitions, 754 flow [2025-02-06 18:47:30,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 754 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:47:30,301 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 443 flow [2025-02-06 18:47:30,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2025-02-06 18:47:30,302 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2025-02-06 18:47:30,302 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 443 flow [2025-02-06 18:47:30,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:30,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:30,302 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:30,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:47:30,302 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:30,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:30,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1871781663, now seen corresponding path program 1 times [2025-02-06 18:47:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:30,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928917484] [2025-02-06 18:47:30,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:30,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:30,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:47:30,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:47:30,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:30,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:30,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928917484] [2025-02-06 18:47:30,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928917484] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:30,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:30,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:47:30,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052932574] [2025-02-06 18:47:30,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:30,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:30,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:30,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:30,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:30,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2025-02-06 18:47:30,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:30,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:30,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2025-02-06 18:47:30,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:31,035 INFO L124 PetriNetUnfolderBase]: 2930/7615 cut-off events. [2025-02-06 18:47:31,035 INFO L125 PetriNetUnfolderBase]: For 3701/3909 co-relation queries the response was YES. [2025-02-06 18:47:31,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16215 conditions, 7615 events. 2930/7615 cut-off events. For 3701/3909 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 73375 event pairs, 1882 based on Foata normal form. 148/7038 useless extension candidates. Maximal degree in co-relation 16187. Up to 3835 conditions per place. [2025-02-06 18:47:31,082 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 101 selfloop transitions, 8 changer transitions 2/151 dead transitions. [2025-02-06 18:47:31,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 151 transitions, 829 flow [2025-02-06 18:47:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 315 transitions. [2025-02-06 18:47:31,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2025-02-06 18:47:31,083 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 443 flow. Second operand 5 states and 315 transitions. [2025-02-06 18:47:31,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 151 transitions, 829 flow [2025-02-06 18:47:31,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 151 transitions, 816 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-06 18:47:31,105 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 463 flow [2025-02-06 18:47:31,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=117, PETRI_TRANSITIONS=109} [2025-02-06 18:47:31,105 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2025-02-06 18:47:31,105 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 463 flow [2025-02-06 18:47:31,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:31,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:31,105 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-06 18:47:31,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:47:31,106 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:31,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:31,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1599544287, now seen corresponding path program 2 times [2025-02-06 18:47:31,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:31,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695280209] [2025-02-06 18:47:31,106 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:47:31,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:31,113 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:47:31,115 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:47:31,115 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:47:31,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:31,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:31,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695280209] [2025-02-06 18:47:31,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695280209] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:31,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840430486] [2025-02-06 18:47:31,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:47:31,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:31,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:31,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:31,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:47:31,181 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:47:31,187 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-06 18:47:31,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:47:31,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:31,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:47:31,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:31,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:47:31,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840430486] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:31,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:31,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-06 18:47:31,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640005817] [2025-02-06 18:47:31,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:31,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:31,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:31,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:31,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:31,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2025-02-06 18:47:31,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:31,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:31,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2025-02-06 18:47:31,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:31,773 INFO L124 PetriNetUnfolderBase]: 2934/7620 cut-off events. [2025-02-06 18:47:31,774 INFO L125 PetriNetUnfolderBase]: For 4036/4246 co-relation queries the response was YES. [2025-02-06 18:47:31,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16255 conditions, 7620 events. 2934/7620 cut-off events. For 4036/4246 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 73246 event pairs, 2005 based on Foata normal form. 103/6987 useless extension candidates. Maximal degree in co-relation 16228. Up to 4356 conditions per place. [2025-02-06 18:47:31,802 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 54 selfloop transitions, 16 changer transitions 0/108 dead transitions. [2025-02-06 18:47:31,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 108 transitions, 593 flow [2025-02-06 18:47:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2025-02-06 18:47:31,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.622093023255814 [2025-02-06 18:47:31,803 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 463 flow. Second operand 4 states and 214 transitions. [2025-02-06 18:47:31,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 108 transitions, 593 flow [2025-02-06 18:47:31,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 108 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:31,817 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 472 flow [2025-02-06 18:47:31,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=472, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2025-02-06 18:47:31,817 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2025-02-06 18:47:31,818 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 472 flow [2025-02-06 18:47:31,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:31,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:31,818 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-06 18:47:31,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:47:32,018 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,SelfDestructingSolverStorable14 [2025-02-06 18:47:32,018 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:32,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash 893435422, now seen corresponding path program 1 times [2025-02-06 18:47:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:32,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90080845] [2025-02-06 18:47:32,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:32,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:32,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:47:32,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:47:32,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:32,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90080845] [2025-02-06 18:47:32,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90080845] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84276243] [2025-02-06 18:47:32,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:32,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:32,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:32,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:32,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:47:32,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:47:32,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:47:32,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:32,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:32,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:47:32,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:32,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:32,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84276243] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:32,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:32,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-06 18:47:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339307595] [2025-02-06 18:47:32,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:32,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:47:32,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:32,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:47:32,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:47:32,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2025-02-06 18:47:32,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 472 flow. Second operand has 24 states, 24 states have (on average 45.083333333333336) internal successors, (1082), 24 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:32,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:32,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2025-02-06 18:47:32,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:32,984 INFO L124 PetriNetUnfolderBase]: 2951/7581 cut-off events. [2025-02-06 18:47:32,985 INFO L125 PetriNetUnfolderBase]: For 4302/4522 co-relation queries the response was YES. [2025-02-06 18:47:33,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16330 conditions, 7581 events. 2951/7581 cut-off events. For 4302/4522 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 72434 event pairs, 1996 based on Foata normal form. 114/6956 useless extension candidates. Maximal degree in co-relation 16302. Up to 4361 conditions per place. [2025-02-06 18:47:33,022 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 45 selfloop transitions, 61 changer transitions 0/144 dead transitions. [2025-02-06 18:47:33,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 144 transitions, 900 flow [2025-02-06 18:47:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 18:47:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 18:47:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1071 transitions. [2025-02-06 18:47:33,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5660676532769556 [2025-02-06 18:47:33,027 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 472 flow. Second operand 22 states and 1071 transitions. [2025-02-06 18:47:33,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 144 transitions, 900 flow [2025-02-06 18:47:33,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 144 transitions, 832 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:33,043 INFO L231 Difference]: Finished difference. Result has 141 places, 144 transitions, 788 flow [2025-02-06 18:47:33,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=788, PETRI_PLACES=141, PETRI_TRANSITIONS=144} [2025-02-06 18:47:33,044 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 62 predicate places. [2025-02-06 18:47:33,045 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 144 transitions, 788 flow [2025-02-06 18:47:33,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 45.083333333333336) internal successors, (1082), 24 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:33,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:33,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:33,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:33,246 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,SelfDestructingSolverStorable15 [2025-02-06 18:47:33,246 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:33,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1522185778, now seen corresponding path program 1 times [2025-02-06 18:47:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:33,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011843616] [2025-02-06 18:47:33,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:33,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:33,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:47:33,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:47:33,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:33,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:33,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:33,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011843616] [2025-02-06 18:47:33,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011843616] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:33,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:33,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:47:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479787879] [2025-02-06 18:47:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:33,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:47:33,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:33,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:47:33,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:47:33,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2025-02-06 18:47:33,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 144 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 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) [2025-02-06 18:47:33,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:33,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2025-02-06 18:47:33,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:33,843 INFO L124 PetriNetUnfolderBase]: 2671/6902 cut-off events. [2025-02-06 18:47:33,843 INFO L125 PetriNetUnfolderBase]: For 3689/3895 co-relation queries the response was YES. [2025-02-06 18:47:33,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14895 conditions, 6902 events. 2671/6902 cut-off events. For 3689/3895 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 65528 event pairs, 1770 based on Foata normal form. 109/6346 useless extension candidates. Maximal degree in co-relation 14861. Up to 3883 conditions per place. [2025-02-06 18:47:33,869 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 91 selfloop transitions, 12 changer transitions 17/159 dead transitions. [2025-02-06 18:47:33,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 159 transitions, 1075 flow [2025-02-06 18:47:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:47:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:47:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 296 transitions. [2025-02-06 18:47:33,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6883720930232559 [2025-02-06 18:47:33,870 INFO L175 Difference]: Start difference. First operand has 141 places, 144 transitions, 788 flow. Second operand 5 states and 296 transitions. [2025-02-06 18:47:33,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 159 transitions, 1075 flow [2025-02-06 18:47:33,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 159 transitions, 919 flow, removed 47 selfloop flow, removed 9 redundant places. [2025-02-06 18:47:33,884 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 642 flow [2025-02-06 18:47:33,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2025-02-06 18:47:33,885 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 59 predicate places. [2025-02-06 18:47:33,885 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 642 flow [2025-02-06 18:47:33,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 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) [2025-02-06 18:47:33,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:33,885 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:33,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 18:47:33,885 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:33,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash 236239364, now seen corresponding path program 1 times [2025-02-06 18:47:33,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:33,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604221109] [2025-02-06 18:47:33,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:33,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:33,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:47:33,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:47:33,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:33,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:34,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:34,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604221109] [2025-02-06 18:47:34,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604221109] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:34,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346508546] [2025-02-06 18:47:34,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:34,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:34,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:34,117 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:34,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:47:34,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 18:47:34,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 18:47:34,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:34,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:34,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 18:47:34,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:34,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:34,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 18:47:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:34,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:34,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-06 18:47:34,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 18:47:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:34,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346508546] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:34,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:34,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-06 18:47:34,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289828938] [2025-02-06 18:47:34,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:34,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:47:34,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:34,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:47:34,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:47:34,367 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 86 [2025-02-06 18:47:34,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 642 flow. Second operand has 15 states, 15 states have (on average 47.06666666666667) internal successors, (706), 15 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:34,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:34,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 86 [2025-02-06 18:47:34,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:35,065 INFO L124 PetriNetUnfolderBase]: 3052/7568 cut-off events. [2025-02-06 18:47:35,065 INFO L125 PetriNetUnfolderBase]: For 4216/4447 co-relation queries the response was YES. [2025-02-06 18:47:35,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16550 conditions, 7568 events. 3052/7568 cut-off events. For 4216/4447 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 71252 event pairs, 918 based on Foata normal form. 100/6926 useless extension candidates. Maximal degree in co-relation 16515. Up to 1638 conditions per place. [2025-02-06 18:47:35,109 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 161 selfloop transitions, 35 changer transitions 0/233 dead transitions. [2025-02-06 18:47:35,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 233 transitions, 1393 flow [2025-02-06 18:47:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:47:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:47:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 571 transitions. [2025-02-06 18:47:35,110 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.663953488372093 [2025-02-06 18:47:35,110 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 642 flow. Second operand 10 states and 571 transitions. [2025-02-06 18:47:35,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 233 transitions, 1393 flow [2025-02-06 18:47:35,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 233 transitions, 1343 flow, removed 13 selfloop flow, removed 6 redundant places. [2025-02-06 18:47:35,128 INFO L231 Difference]: Finished difference. Result has 139 places, 149 transitions, 747 flow [2025-02-06 18:47:35,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=747, PETRI_PLACES=139, PETRI_TRANSITIONS=149} [2025-02-06 18:47:35,129 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 60 predicate places. [2025-02-06 18:47:35,129 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 149 transitions, 747 flow [2025-02-06 18:47:35,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 47.06666666666667) internal successors, (706), 15 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:35,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:35,130 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:35,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:35,330 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,SelfDestructingSolverStorable17 [2025-02-06 18:47:35,330 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:35,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1266544425, now seen corresponding path program 1 times [2025-02-06 18:47:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:35,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628425658] [2025-02-06 18:47:35,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:35,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:47:35,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:47:35,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:35,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:35,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628425658] [2025-02-06 18:47:35,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628425658] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130671897] [2025-02-06 18:47:35,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:35,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:35,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:35,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:35,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 18:47:35,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 18:47:35,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 18:47:35,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:35,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:35,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 18:47:35,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:35,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:35,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-06 18:47:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:35,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:35,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-06 18:47:35,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-02-06 18:47:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:35,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130671897] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:35,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:35,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-06 18:47:35,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170969804] [2025-02-06 18:47:35,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:35,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:47:35,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:35,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:47:35,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:47:35,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2025-02-06 18:47:35,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 149 transitions, 747 flow. Second operand has 15 states, 15 states have (on average 45.2) internal successors, (678), 15 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:35,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:35,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2025-02-06 18:47:35,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:36,439 INFO L124 PetriNetUnfolderBase]: 3612/8156 cut-off events. [2025-02-06 18:47:36,439 INFO L125 PetriNetUnfolderBase]: For 7005/7302 co-relation queries the response was YES. [2025-02-06 18:47:36,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19289 conditions, 8156 events. 3612/8156 cut-off events. For 7005/7302 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 73190 event pairs, 1162 based on Foata normal form. 178/7640 useless extension candidates. Maximal degree in co-relation 19254. Up to 2076 conditions per place. [2025-02-06 18:47:36,477 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 165 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2025-02-06 18:47:36,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 234 transitions, 1462 flow [2025-02-06 18:47:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:47:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:47:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 551 transitions. [2025-02-06 18:47:36,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6406976744186047 [2025-02-06 18:47:36,478 INFO L175 Difference]: Start difference. First operand has 139 places, 149 transitions, 747 flow. Second operand 10 states and 551 transitions. [2025-02-06 18:47:36,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 234 transitions, 1462 flow [2025-02-06 18:47:36,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 234 transitions, 1442 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 18:47:36,573 INFO L231 Difference]: Finished difference. Result has 147 places, 151 transitions, 828 flow [2025-02-06 18:47:36,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=828, PETRI_PLACES=147, PETRI_TRANSITIONS=151} [2025-02-06 18:47:36,574 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 68 predicate places. [2025-02-06 18:47:36,574 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 151 transitions, 828 flow [2025-02-06 18:47:36,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.2) internal successors, (678), 15 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:36,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:36,574 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:36,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:36,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:36,775 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:36,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:36,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1320304781, now seen corresponding path program 1 times [2025-02-06 18:47:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:36,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870763652] [2025-02-06 18:47:36,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:36,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:36,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:47:36,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:47:36,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:36,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:37,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870763652] [2025-02-06 18:47:37,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870763652] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052114383] [2025-02-06 18:47:37,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:37,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:37,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:37,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:37,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 18:47:37,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:47:37,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:47:37,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:37,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:37,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 18:47:37,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:37,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 18:47:37,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:37,200 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:47:37,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 18:47:37,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 18:47:37,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 18:47:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:37,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:37,319 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_195 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_195) c_~a1~0.base) c_~a1~0.offset) 9223372039002259456)) is different from false [2025-02-06 18:47:37,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:47:37,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2025-02-06 18:47:37,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:47:37,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2025-02-06 18:47:37,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2025-02-06 18:47:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-02-06 18:47:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052114383] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:37,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:37,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2025-02-06 18:47:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732695966] [2025-02-06 18:47:37,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:37,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:47:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:37,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:47:37,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=288, Unknown=1, NotChecked=34, Total=380 [2025-02-06 18:47:37,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2025-02-06 18:47:37,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 151 transitions, 828 flow. Second operand has 20 states, 20 states have (on average 27.75) internal successors, (555), 20 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:37,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:37,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2025-02-06 18:47:37,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:39,543 INFO L124 PetriNetUnfolderBase]: 11565/20431 cut-off events. [2025-02-06 18:47:39,543 INFO L125 PetriNetUnfolderBase]: For 29383/30759 co-relation queries the response was YES. [2025-02-06 18:47:39,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55599 conditions, 20431 events. 11565/20431 cut-off events. For 29383/30759 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 167293 event pairs, 2686 based on Foata normal form. 600/19027 useless extension candidates. Maximal degree in co-relation 55562. Up to 3021 conditions per place. [2025-02-06 18:47:39,670 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 449 selfloop transitions, 61 changer transitions 14/550 dead transitions. [2025-02-06 18:47:39,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 550 transitions, 4029 flow [2025-02-06 18:47:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 18:47:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-06 18:47:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 915 transitions. [2025-02-06 18:47:39,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4433139534883721 [2025-02-06 18:47:39,673 INFO L175 Difference]: Start difference. First operand has 147 places, 151 transitions, 828 flow. Second operand 24 states and 915 transitions. [2025-02-06 18:47:39,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 550 transitions, 4029 flow [2025-02-06 18:47:39,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 550 transitions, 3849 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-02-06 18:47:39,756 INFO L231 Difference]: Finished difference. Result has 169 places, 183 transitions, 1165 flow [2025-02-06 18:47:39,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1165, PETRI_PLACES=169, PETRI_TRANSITIONS=183} [2025-02-06 18:47:39,756 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 90 predicate places. [2025-02-06 18:47:39,756 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 183 transitions, 1165 flow [2025-02-06 18:47:39,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 27.75) internal successors, (555), 20 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:39,757 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:39,757 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:39,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:39,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:39,958 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:39,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -638690824, now seen corresponding path program 1 times [2025-02-06 18:47:39,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:39,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658537316] [2025-02-06 18:47:39,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:39,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:39,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:47:39,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:47:39,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:39,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:47:40,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658537316] [2025-02-06 18:47:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658537316] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632304792] [2025-02-06 18:47:40,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:40,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:40,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:40,021 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:40,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 18:47:40,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:47:40,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:47:40,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:40,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:40,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:47:40,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:40,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:47:40,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632304792] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:40,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:40,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-02-06 18:47:40,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766771927] [2025-02-06 18:47:40,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:40,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:47:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:40,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:47:40,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:47:40,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:47:40,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 183 transitions, 1165 flow. Second operand has 19 states, 19 states have (on average 44.21052631578947) internal successors, (840), 19 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:40,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:40,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:47:40,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:42,294 INFO L124 PetriNetUnfolderBase]: 4512/11362 cut-off events. [2025-02-06 18:47:42,294 INFO L125 PetriNetUnfolderBase]: For 17141/17545 co-relation queries the response was YES. [2025-02-06 18:47:42,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29296 conditions, 11362 events. 4512/11362 cut-off events. For 17141/17545 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 115264 event pairs, 1070 based on Foata normal form. 306/10681 useless extension candidates. Maximal degree in co-relation 29254. Up to 1945 conditions per place. [2025-02-06 18:47:42,386 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 309 selfloop transitions, 57 changer transitions 12/419 dead transitions. [2025-02-06 18:47:42,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 419 transitions, 3232 flow [2025-02-06 18:47:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:47:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:47:42,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 915 transitions. [2025-02-06 18:47:42,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6258549931600548 [2025-02-06 18:47:42,388 INFO L175 Difference]: Start difference. First operand has 169 places, 183 transitions, 1165 flow. Second operand 17 states and 915 transitions. [2025-02-06 18:47:42,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 419 transitions, 3232 flow [2025-02-06 18:47:42,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 419 transitions, 3115 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-02-06 18:47:42,449 INFO L231 Difference]: Finished difference. Result has 179 places, 206 transitions, 1445 flow [2025-02-06 18:47:42,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1445, PETRI_PLACES=179, PETRI_TRANSITIONS=206} [2025-02-06 18:47:42,449 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 100 predicate places. [2025-02-06 18:47:42,449 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 206 transitions, 1445 flow [2025-02-06 18:47:42,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.21052631578947) internal successors, (840), 19 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:42,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:42,450 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:42,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:47:42,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:42,650 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:42,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:42,651 INFO L85 PathProgramCache]: Analyzing trace with hash -608170873, now seen corresponding path program 1 times [2025-02-06 18:47:42,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:42,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343513487] [2025-02-06 18:47:42,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:42,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:42,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:47:42,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:47:42,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:42,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:47:42,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:42,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343513487] [2025-02-06 18:47:42,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343513487] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:42,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:42,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:42,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595568181] [2025-02-06 18:47:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:42,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:42,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:42,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:42,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:47:42,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 206 transitions, 1445 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:42,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:42,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:47:42,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:43,620 INFO L124 PetriNetUnfolderBase]: 5393/13025 cut-off events. [2025-02-06 18:47:43,621 INFO L125 PetriNetUnfolderBase]: For 20896/21234 co-relation queries the response was YES. [2025-02-06 18:47:43,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33912 conditions, 13025 events. 5393/13025 cut-off events. For 20896/21234 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 131617 event pairs, 2470 based on Foata normal form. 300/12139 useless extension candidates. Maximal degree in co-relation 33870. Up to 5356 conditions per place. [2025-02-06 18:47:43,801 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 232 selfloop transitions, 8 changer transitions 0/275 dead transitions. [2025-02-06 18:47:43,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 275 transitions, 2342 flow [2025-02-06 18:47:43,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2025-02-06 18:47:43,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7063953488372093 [2025-02-06 18:47:43,802 INFO L175 Difference]: Start difference. First operand has 179 places, 206 transitions, 1445 flow. Second operand 4 states and 243 transitions. [2025-02-06 18:47:43,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 275 transitions, 2342 flow [2025-02-06 18:47:43,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 275 transitions, 2311 flow, removed 1 selfloop flow, removed 9 redundant places. [2025-02-06 18:47:43,855 INFO L231 Difference]: Finished difference. Result has 173 places, 204 transitions, 1413 flow [2025-02-06 18:47:43,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1413, PETRI_PLACES=173, PETRI_TRANSITIONS=204} [2025-02-06 18:47:43,856 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 94 predicate places. [2025-02-06 18:47:43,856 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 204 transitions, 1413 flow [2025-02-06 18:47:43,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:43,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:43,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:43,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:47:43,856 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:43,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash -608171866, now seen corresponding path program 1 times [2025-02-06 18:47:43,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:43,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261273439] [2025-02-06 18:47:43,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:43,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:47:43,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:47:43,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:43,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:44,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:44,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261273439] [2025-02-06 18:47:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261273439] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:44,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949715557] [2025-02-06 18:47:44,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:44,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:44,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:44,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 18:47:44,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 18:47:44,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 18:47:44,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:44,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:44,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 18:47:44,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:44,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 18:47:44,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:44,175 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:47:44,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 18:47:44,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-06 18:47:44,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-06 18:47:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:44,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:44,307 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_239 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_239) c_~a1~0.base) c_~a1~0.offset) 2147483649))) is different from false [2025-02-06 18:47:44,315 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_239 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_124| Int)) (or (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_124| v_ArrVal_239) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_124|) 0)))) is different from false [2025-02-06 18:47:44,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:47:44,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2025-02-06 18:47:44,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:47:44,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2025-02-06 18:47:44,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-02-06 18:47:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2025-02-06 18:47:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949715557] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:44,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:44,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-02-06 18:47:44,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659010252] [2025-02-06 18:47:44,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:44,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:47:44,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:44,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:47:44,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2025-02-06 18:47:44,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2025-02-06 18:47:44,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 204 transitions, 1413 flow. Second operand has 20 states, 20 states have (on average 38.05) internal successors, (761), 20 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:44,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:44,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2025-02-06 18:47:44,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:45,870 INFO L124 PetriNetUnfolderBase]: 7987/14276 cut-off events. [2025-02-06 18:47:45,870 INFO L125 PetriNetUnfolderBase]: For 22106/23331 co-relation queries the response was YES. [2025-02-06 18:47:45,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41316 conditions, 14276 events. 7987/14276 cut-off events. For 22106/23331 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 115088 event pairs, 1581 based on Foata normal form. 414/14048 useless extension candidates. Maximal degree in co-relation 41276. Up to 3211 conditions per place. [2025-02-06 18:47:45,979 INFO L140 encePairwiseOnDemand]: 69/86 looper letters, 418 selfloop transitions, 56 changer transitions 0/502 dead transitions. [2025-02-06 18:47:45,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 502 transitions, 4128 flow [2025-02-06 18:47:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:47:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:47:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 820 transitions. [2025-02-06 18:47:45,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.560875512995896 [2025-02-06 18:47:45,981 INFO L175 Difference]: Start difference. First operand has 173 places, 204 transitions, 1413 flow. Second operand 17 states and 820 transitions. [2025-02-06 18:47:45,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 502 transitions, 4128 flow [2025-02-06 18:47:46,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 502 transitions, 4115 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:46,052 INFO L231 Difference]: Finished difference. Result has 193 places, 209 transitions, 1590 flow [2025-02-06 18:47:46,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1590, PETRI_PLACES=193, PETRI_TRANSITIONS=209} [2025-02-06 18:47:46,053 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 114 predicate places. [2025-02-06 18:47:46,053 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 209 transitions, 1590 flow [2025-02-06 18:47:46,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 38.05) internal successors, (761), 20 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:46,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:46,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:46,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 18:47:46,254 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,SelfDestructingSolverStorable22 [2025-02-06 18:47:46,254 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:46,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:46,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2020194664, now seen corresponding path program 1 times [2025-02-06 18:47:46,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:46,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836885886] [2025-02-06 18:47:46,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:46,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:46,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:47:46,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:47:46,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:46,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:46,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836885886] [2025-02-06 18:47:46,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836885886] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588374196] [2025-02-06 18:47:46,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:46,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:46,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:46,426 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) [2025-02-06 18:47:46,429 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 [2025-02-06 18:47:46,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:47:46,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:47:46,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:46,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:46,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 18:47:46,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:46,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 18:47:46,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:46,527 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:47:46,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 18:47:46,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-06 18:47:46,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-06 18:47:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:46,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:46,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:47:46,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2025-02-06 18:47:46,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:47:46,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2025-02-06 18:47:46,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-02-06 18:47:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588374196] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:46,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2025-02-06 18:47:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2253042] [2025-02-06 18:47:46,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:46,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:47:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:46,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:47:46,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=278, Unknown=3, NotChecked=0, Total=342 [2025-02-06 18:47:46,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 86 [2025-02-06 18:47:46,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 209 transitions, 1590 flow. Second operand has 19 states, 19 states have (on average 40.421052631578945) internal successors, (768), 19 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:46,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:46,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 86 [2025-02-06 18:47:46,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:48,140 INFO L124 PetriNetUnfolderBase]: 8481/15451 cut-off events. [2025-02-06 18:47:48,140 INFO L125 PetriNetUnfolderBase]: For 38525/39223 co-relation queries the response was YES. [2025-02-06 18:47:48,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46853 conditions, 15451 events. 8481/15451 cut-off events. For 38525/39223 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 128290 event pairs, 2583 based on Foata normal form. 460/14841 useless extension candidates. Maximal degree in co-relation 46806. Up to 5216 conditions per place. [2025-02-06 18:47:48,230 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 273 selfloop transitions, 55 changer transitions 0/360 dead transitions. [2025-02-06 18:47:48,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 360 transitions, 3309 flow [2025-02-06 18:47:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:47:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:47:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 627 transitions. [2025-02-06 18:47:48,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5608228980322003 [2025-02-06 18:47:48,231 INFO L175 Difference]: Start difference. First operand has 193 places, 209 transitions, 1590 flow. Second operand 13 states and 627 transitions. [2025-02-06 18:47:48,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 360 transitions, 3309 flow [2025-02-06 18:47:48,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 360 transitions, 3137 flow, removed 15 selfloop flow, removed 11 redundant places. [2025-02-06 18:47:48,296 INFO L231 Difference]: Finished difference. Result has 196 places, 211 transitions, 1659 flow [2025-02-06 18:47:48,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1659, PETRI_PLACES=196, PETRI_TRANSITIONS=211} [2025-02-06 18:47:48,297 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 117 predicate places. [2025-02-06 18:47:48,297 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 211 transitions, 1659 flow [2025-02-06 18:47:48,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 40.421052631578945) internal successors, (768), 19 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:48,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:48,298 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:48,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 18:47:48,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-06 18:47:48,498 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:48,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1673458022, now seen corresponding path program 1 times [2025-02-06 18:47:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:48,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316307615] [2025-02-06 18:47:48,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:48,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:47:48,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:47:48,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:48,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:48,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:48,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316307615] [2025-02-06 18:47:48,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316307615] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:48,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460101083] [2025-02-06 18:47:48,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:48,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:48,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:48,685 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:48,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 18:47:48,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:47:48,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:47:48,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:48,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:48,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 18:47:48,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:48,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 18:47:48,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:48,789 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:47:48,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 18:47:48,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 18:47:48,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 18:47:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:48,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:48,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:47:48,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2025-02-06 18:47:48,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:47:48,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2025-02-06 18:47:48,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2025-02-06 18:47:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:47:49,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460101083] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:49,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:49,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-02-06 18:47:49,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83103307] [2025-02-06 18:47:49,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:49,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 18:47:49,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:49,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 18:47:49,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=351, Unknown=5, NotChecked=0, Total=420 [2025-02-06 18:47:49,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2025-02-06 18:47:49,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 211 transitions, 1659 flow. Second operand has 21 states, 21 states have (on average 38.04761904761905) internal successors, (799), 21 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:49,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:49,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2025-02-06 18:47:49,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:50,826 INFO L124 PetriNetUnfolderBase]: 8652/14985 cut-off events. [2025-02-06 18:47:50,826 INFO L125 PetriNetUnfolderBase]: For 31422/32320 co-relation queries the response was YES. [2025-02-06 18:47:50,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47300 conditions, 14985 events. 8652/14985 cut-off events. For 31422/32320 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 118469 event pairs, 1905 based on Foata normal form. 848/15293 useless extension candidates. Maximal degree in co-relation 47252. Up to 3815 conditions per place. [2025-02-06 18:47:50,933 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 417 selfloop transitions, 58 changer transitions 33/540 dead transitions. [2025-02-06 18:47:50,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 540 transitions, 4910 flow [2025-02-06 18:47:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 18:47:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 18:47:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 867 transitions. [2025-02-06 18:47:50,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.560077519379845 [2025-02-06 18:47:50,938 INFO L175 Difference]: Start difference. First operand has 196 places, 211 transitions, 1659 flow. Second operand 18 states and 867 transitions. [2025-02-06 18:47:50,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 540 transitions, 4910 flow [2025-02-06 18:47:51,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 540 transitions, 4650 flow, removed 2 selfloop flow, removed 11 redundant places. [2025-02-06 18:47:51,021 INFO L231 Difference]: Finished difference. Result has 207 places, 218 transitions, 1772 flow [2025-02-06 18:47:51,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1772, PETRI_PLACES=207, PETRI_TRANSITIONS=218} [2025-02-06 18:47:51,022 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 128 predicate places. [2025-02-06 18:47:51,022 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 218 transitions, 1772 flow [2025-02-06 18:47:51,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 38.04761904761905) internal successors, (799), 21 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:51,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:51,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:51,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:51,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:51,223 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:51,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash 581098445, now seen corresponding path program 1 times [2025-02-06 18:47:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:51,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864954710] [2025-02-06 18:47:51,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:51,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:51,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:47:51,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:47:51,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:51,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:47:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864954710] [2025-02-06 18:47:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864954710] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:47:51,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:47:51,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:47:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152918884] [2025-02-06 18:47:51,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:47:51,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:47:51,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:51,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:47:51,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:47:51,267 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:47:51,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 218 transitions, 1772 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:51,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:51,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:47:51,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:52,302 INFO L124 PetriNetUnfolderBase]: 6031/13114 cut-off events. [2025-02-06 18:47:52,303 INFO L125 PetriNetUnfolderBase]: For 33303/33731 co-relation queries the response was YES. [2025-02-06 18:47:52,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41083 conditions, 13114 events. 6031/13114 cut-off events. For 33303/33731 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 123641 event pairs, 2536 based on Foata normal form. 436/12976 useless extension candidates. Maximal degree in co-relation 41032. Up to 5585 conditions per place. [2025-02-06 18:47:52,400 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 235 selfloop transitions, 10 changer transitions 0/286 dead transitions. [2025-02-06 18:47:52,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 286 transitions, 2698 flow [2025-02-06 18:47:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:47:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:47:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2025-02-06 18:47:52,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7005813953488372 [2025-02-06 18:47:52,401 INFO L175 Difference]: Start difference. First operand has 207 places, 218 transitions, 1772 flow. Second operand 4 states and 241 transitions. [2025-02-06 18:47:52,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 286 transitions, 2698 flow [2025-02-06 18:47:52,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 286 transitions, 2584 flow, removed 4 selfloop flow, removed 12 redundant places. [2025-02-06 18:47:52,522 INFO L231 Difference]: Finished difference. Result has 197 places, 216 transitions, 1662 flow [2025-02-06 18:47:52,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1662, PETRI_PLACES=197, PETRI_TRANSITIONS=216} [2025-02-06 18:47:52,522 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 118 predicate places. [2025-02-06 18:47:52,523 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 216 transitions, 1662 flow [2025-02-06 18:47:52,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:52,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:52,523 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:52,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-06 18:47:52,523 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:52,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1828994137, now seen corresponding path program 1 times [2025-02-06 18:47:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:52,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660888344] [2025-02-06 18:47:52,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:52,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:52,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:47:52,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:47:52,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:52,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:47:52,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:52,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660888344] [2025-02-06 18:47:52,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660888344] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:52,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865807099] [2025-02-06 18:47:52,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:52,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:52,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:52,565 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:52,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 18:47:52,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:47:52,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:47:52,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:52,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:52,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:47:52,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:52,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:52,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865807099] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:52,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:52,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 18:47:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024195929] [2025-02-06 18:47:52,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:52,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:47:52,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:52,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:47:52,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:47:53,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:47:53,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 216 transitions, 1662 flow. Second operand has 19 states, 19 states have (on average 44.26315789473684) internal successors, (841), 19 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:53,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:53,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:47:53,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:54,797 INFO L124 PetriNetUnfolderBase]: 7221/17388 cut-off events. [2025-02-06 18:47:54,797 INFO L125 PetriNetUnfolderBase]: For 43732/44372 co-relation queries the response was YES. [2025-02-06 18:47:54,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50473 conditions, 17388 events. 7221/17388 cut-off events. For 43732/44372 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 182231 event pairs, 314 based on Foata normal form. 548/16650 useless extension candidates. Maximal degree in co-relation 50425. Up to 3115 conditions per place. [2025-02-06 18:47:54,893 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 335 selfloop transitions, 91 changer transitions 37/507 dead transitions. [2025-02-06 18:47:54,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 507 transitions, 4731 flow [2025-02-06 18:47:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:47:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:47:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 771 transitions. [2025-02-06 18:47:54,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6403654485049833 [2025-02-06 18:47:54,895 INFO L175 Difference]: Start difference. First operand has 197 places, 216 transitions, 1662 flow. Second operand 14 states and 771 transitions. [2025-02-06 18:47:54,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 507 transitions, 4731 flow [2025-02-06 18:47:55,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 507 transitions, 4639 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:47:55,023 INFO L231 Difference]: Finished difference. Result has 208 places, 219 transitions, 1867 flow [2025-02-06 18:47:55,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1867, PETRI_PLACES=208, PETRI_TRANSITIONS=219} [2025-02-06 18:47:55,024 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 129 predicate places. [2025-02-06 18:47:55,024 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 219 transitions, 1867 flow [2025-02-06 18:47:55,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.26315789473684) internal successors, (841), 19 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:55,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:55,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:55,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 18:47:55,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:55,224 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:55,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1798475179, now seen corresponding path program 1 times [2025-02-06 18:47:55,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:55,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591327390] [2025-02-06 18:47:55,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:55,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:47:55,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:47:55,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:55,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:55,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:55,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591327390] [2025-02-06 18:47:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591327390] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:55,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38823817] [2025-02-06 18:47:55,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:55,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:55,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:55,355 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:55,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 18:47:55,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:47:55,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:47:55,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:55,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:55,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 18:47:55,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:55,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:55,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-06 18:47:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:55,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:55,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-06 18:47:55,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-02-06 18:47:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38823817] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:55,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:55,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-02-06 18:47:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981375350] [2025-02-06 18:47:55,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:55,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 18:47:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:55,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 18:47:55,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-02-06 18:47:55,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 86 [2025-02-06 18:47:55,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 219 transitions, 1867 flow. Second operand has 15 states, 15 states have (on average 41.46666666666667) internal successors, (622), 15 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:55,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:55,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 86 [2025-02-06 18:47:55,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:47:57,473 INFO L124 PetriNetUnfolderBase]: 11151/21096 cut-off events. [2025-02-06 18:47:57,473 INFO L125 PetriNetUnfolderBase]: For 57975/59001 co-relation queries the response was YES. [2025-02-06 18:47:57,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67215 conditions, 21096 events. 11151/21096 cut-off events. For 57975/59001 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 189303 event pairs, 2357 based on Foata normal form. 778/21104 useless extension candidates. Maximal degree in co-relation 67166. Up to 4949 conditions per place. [2025-02-06 18:47:57,657 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 397 selfloop transitions, 65 changer transitions 0/496 dead transitions. [2025-02-06 18:47:57,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 496 transitions, 4735 flow [2025-02-06 18:47:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:47:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:47:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 735 transitions. [2025-02-06 18:47:57,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2025-02-06 18:47:57,658 INFO L175 Difference]: Start difference. First operand has 208 places, 219 transitions, 1867 flow. Second operand 14 states and 735 transitions. [2025-02-06 18:47:57,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 496 transitions, 4735 flow [2025-02-06 18:47:57,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 496 transitions, 4696 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-06 18:47:57,985 INFO L231 Difference]: Finished difference. Result has 222 places, 223 transitions, 2039 flow [2025-02-06 18:47:57,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2039, PETRI_PLACES=222, PETRI_TRANSITIONS=223} [2025-02-06 18:47:57,986 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 143 predicate places. [2025-02-06 18:47:57,986 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 223 transitions, 2039 flow [2025-02-06 18:47:57,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 41.46666666666667) internal successors, (622), 15 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:57,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:47:57,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:47:57,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 18:47:58,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-06 18:47:58,186 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:47:58,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:47:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash 81844971, now seen corresponding path program 1 times [2025-02-06 18:47:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:47:58,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234353004] [2025-02-06 18:47:58,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:58,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:47:58,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:47:58,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:47:58,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:58,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:47:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234353004] [2025-02-06 18:47:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234353004] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:47:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322872976] [2025-02-06 18:47:58,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:47:58,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:47:58,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:47:58,331 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:47:58,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 18:47:58,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:47:58,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:47:58,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:47:58,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:47:58,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 18:47:58,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:47:58,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:47:58,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 18:47:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:58,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:47:58,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-06 18:47:58,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 18:47:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:47:58,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322872976] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:47:58,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:47:58,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-02-06 18:47:58,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492204307] [2025-02-06 18:47:58,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:47:58,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 18:47:58,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:47:58,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 18:47:58,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2025-02-06 18:47:58,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2025-02-06 18:47:58,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 223 transitions, 2039 flow. Second operand has 16 states, 16 states have (on average 42.3125) internal successors, (677), 16 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:47:58,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:47:58,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2025-02-06 18:47:58,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:00,913 INFO L124 PetriNetUnfolderBase]: 10841/20880 cut-off events. [2025-02-06 18:48:00,913 INFO L125 PetriNetUnfolderBase]: For 67283/68273 co-relation queries the response was YES. [2025-02-06 18:48:00,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71740 conditions, 20880 events. 10841/20880 cut-off events. For 67283/68273 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 190562 event pairs, 2492 based on Foata normal form. 1230/21522 useless extension candidates. Maximal degree in co-relation 71684. Up to 5198 conditions per place. [2025-02-06 18:48:01,039 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 423 selfloop transitions, 66 changer transitions 3/530 dead transitions. [2025-02-06 18:48:01,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 530 transitions, 5218 flow [2025-02-06 18:48:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:48:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:48:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 795 transitions. [2025-02-06 18:48:01,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6162790697674418 [2025-02-06 18:48:01,040 INFO L175 Difference]: Start difference. First operand has 222 places, 223 transitions, 2039 flow. Second operand 15 states and 795 transitions. [2025-02-06 18:48:01,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 530 transitions, 5218 flow [2025-02-06 18:48:01,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 530 transitions, 5123 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-02-06 18:48:01,247 INFO L231 Difference]: Finished difference. Result has 234 places, 231 transitions, 2176 flow [2025-02-06 18:48:01,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2176, PETRI_PLACES=234, PETRI_TRANSITIONS=231} [2025-02-06 18:48:01,248 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 155 predicate places. [2025-02-06 18:48:01,248 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 231 transitions, 2176 flow [2025-02-06 18:48:01,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 42.3125) internal successors, (677), 16 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:01,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:01,248 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:01,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 18:48:01,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-06 18:48:01,449 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:01,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2023303311, now seen corresponding path program 1 times [2025-02-06 18:48:01,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:01,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439424194] [2025-02-06 18:48:01,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:01,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:01,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:48:01,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:48:01,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:01,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:48:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:01,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439424194] [2025-02-06 18:48:01,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439424194] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:01,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620309125] [2025-02-06 18:48:01,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:01,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:01,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:01,534 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:01,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 18:48:01,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:48:01,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:48:01,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:01,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:01,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:48:01,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:48:01,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:48:01,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620309125] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:01,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:01,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-02-06 18:48:01,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585883194] [2025-02-06 18:48:01,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:01,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 18:48:01,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:01,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 18:48:01,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-02-06 18:48:02,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:48:02,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 231 transitions, 2176 flow. Second operand has 20 states, 20 states have (on average 43.75) internal successors, (875), 20 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:02,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:02,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:48:02,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:04,142 INFO L124 PetriNetUnfolderBase]: 6901/16226 cut-off events. [2025-02-06 18:48:04,142 INFO L125 PetriNetUnfolderBase]: For 55478/55847 co-relation queries the response was YES. [2025-02-06 18:48:04,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57649 conditions, 16226 events. 6901/16226 cut-off events. For 55478/55847 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 165276 event pairs, 3747 based on Foata normal form. 287/16433 useless extension candidates. Maximal degree in co-relation 57589. Up to 7674 conditions per place. [2025-02-06 18:48:04,283 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 169 selfloop transitions, 86 changer transitions 42/346 dead transitions. [2025-02-06 18:48:04,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 346 transitions, 3728 flow [2025-02-06 18:48:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:48:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:48:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 540 transitions. [2025-02-06 18:48:04,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2025-02-06 18:48:04,284 INFO L175 Difference]: Start difference. First operand has 234 places, 231 transitions, 2176 flow. Second operand 10 states and 540 transitions. [2025-02-06 18:48:04,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 346 transitions, 3728 flow [2025-02-06 18:48:04,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 346 transitions, 3497 flow, removed 23 selfloop flow, removed 9 redundant places. [2025-02-06 18:48:04,609 INFO L231 Difference]: Finished difference. Result has 238 places, 235 transitions, 2289 flow [2025-02-06 18:48:04,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2289, PETRI_PLACES=238, PETRI_TRANSITIONS=235} [2025-02-06 18:48:04,610 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2025-02-06 18:48:04,610 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 235 transitions, 2289 flow [2025-02-06 18:48:04,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 43.75) internal successors, (875), 20 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:04,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:04,611 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:04,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 18:48:04,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:04,811 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:04,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:04,812 INFO L85 PathProgramCache]: Analyzing trace with hash -839083588, now seen corresponding path program 1 times [2025-02-06 18:48:04,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:04,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236930723] [2025-02-06 18:48:04,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:04,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:04,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:48:04,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:48:04,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:04,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:48:04,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:04,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236930723] [2025-02-06 18:48:04,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236930723] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:04,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:04,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:04,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640796931] [2025-02-06 18:48:04,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:04,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:04,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:04,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:04,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:04,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:48:04,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 235 transitions, 2289 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:04,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:04,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:48:04,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:06,548 INFO L124 PetriNetUnfolderBase]: 8590/17518 cut-off events. [2025-02-06 18:48:06,549 INFO L125 PetriNetUnfolderBase]: For 59880/60391 co-relation queries the response was YES. [2025-02-06 18:48:06,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62363 conditions, 17518 events. 8590/17518 cut-off events. For 59880/60391 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 162450 event pairs, 3577 based on Foata normal form. 725/18110 useless extension candidates. Maximal degree in co-relation 62303. Up to 7831 conditions per place. [2025-02-06 18:48:06,670 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 235 selfloop transitions, 12 changer transitions 22/310 dead transitions. [2025-02-06 18:48:06,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 310 transitions, 3493 flow [2025-02-06 18:48:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2025-02-06 18:48:06,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6947674418604651 [2025-02-06 18:48:06,671 INFO L175 Difference]: Start difference. First operand has 238 places, 235 transitions, 2289 flow. Second operand 4 states and 239 transitions. [2025-02-06 18:48:06,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 310 transitions, 3493 flow [2025-02-06 18:48:06,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 310 transitions, 3315 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-02-06 18:48:06,938 INFO L231 Difference]: Finished difference. Result has 230 places, 222 transitions, 1953 flow [2025-02-06 18:48:06,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1953, PETRI_PLACES=230, PETRI_TRANSITIONS=222} [2025-02-06 18:48:06,939 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 151 predicate places. [2025-02-06 18:48:06,939 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 222 transitions, 1953 flow [2025-02-06 18:48:06,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:06,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:06,939 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:06,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-02-06 18:48:06,939 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:06,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:06,939 INFO L85 PathProgramCache]: Analyzing trace with hash 66951598, now seen corresponding path program 1 times [2025-02-06 18:48:06,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:06,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780417158] [2025-02-06 18:48:06,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:06,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:06,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:48:06,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:48:06,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:06,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:48:06,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:06,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780417158] [2025-02-06 18:48:06,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780417158] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:06,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772838404] [2025-02-06 18:48:06,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:06,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:06,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:06,978 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:06,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 18:48:07,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 18:48:07,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 18:48:07,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:07,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:07,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:48:07,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:48:07,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:48:07,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772838404] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:07,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:07,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-02-06 18:48:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792637256] [2025-02-06 18:48:07,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:07,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:48:07,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:07,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:48:07,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:48:07,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:48:07,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 222 transitions, 1953 flow. Second operand has 19 states, 19 states have (on average 44.421052631578945) internal successors, (844), 19 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:07,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:07,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:48:07,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:08,833 INFO L124 PetriNetUnfolderBase]: 5538/12670 cut-off events. [2025-02-06 18:48:08,834 INFO L125 PetriNetUnfolderBase]: For 40602/41198 co-relation queries the response was YES. [2025-02-06 18:48:08,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44483 conditions, 12670 events. 5538/12670 cut-off events. For 40602/41198 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 119492 event pairs, 1300 based on Foata normal form. 412/13072 useless extension candidates. Maximal degree in co-relation 44425. Up to 2637 conditions per place. [2025-02-06 18:48:08,926 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 237 selfloop transitions, 54 changer transitions 101/437 dead transitions. [2025-02-06 18:48:08,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 437 transitions, 4217 flow [2025-02-06 18:48:08,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:48:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:48:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 916 transitions. [2025-02-06 18:48:08,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6265389876880985 [2025-02-06 18:48:08,927 INFO L175 Difference]: Start difference. First operand has 230 places, 222 transitions, 1953 flow. Second operand 17 states and 916 transitions. [2025-02-06 18:48:08,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 437 transitions, 4217 flow [2025-02-06 18:48:09,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 437 transitions, 4123 flow, removed 36 selfloop flow, removed 6 redundant places. [2025-02-06 18:48:09,196 INFO L231 Difference]: Finished difference. Result has 235 places, 200 transitions, 1734 flow [2025-02-06 18:48:09,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1734, PETRI_PLACES=235, PETRI_TRANSITIONS=200} [2025-02-06 18:48:09,196 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 156 predicate places. [2025-02-06 18:48:09,196 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 200 transitions, 1734 flow [2025-02-06 18:48:09,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.421052631578945) internal successors, (844), 19 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:09,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:09,197 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:09,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 18:48:09,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:09,397 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:09,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1525508570, now seen corresponding path program 2 times [2025-02-06 18:48:09,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:09,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950899209] [2025-02-06 18:48:09,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:48:09,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:09,404 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 18:48:09,408 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 18:48:09,409 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:48:09,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 18:48:09,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:09,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950899209] [2025-02-06 18:48:09,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950899209] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294891303] [2025-02-06 18:48:09,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:48:09,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:09,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:09,444 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:09,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 18:48:09,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-06 18:48:09,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 18:48:09,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:48:09,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:09,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:48:09,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 18:48:09,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 18:48:09,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294891303] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:09,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:09,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-02-06 18:48:09,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959455688] [2025-02-06 18:48:09,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:09,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:48:09,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:09,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:48:09,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:48:09,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:48:09,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 200 transitions, 1734 flow. Second operand has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:09,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:09,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:48:09,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:10,488 INFO L124 PetriNetUnfolderBase]: 4604/10790 cut-off events. [2025-02-06 18:48:10,488 INFO L125 PetriNetUnfolderBase]: For 31496/31970 co-relation queries the response was YES. [2025-02-06 18:48:10,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37576 conditions, 10790 events. 4604/10790 cut-off events. For 31496/31970 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 103158 event pairs, 1232 based on Foata normal form. 345/11080 useless extension candidates. Maximal degree in co-relation 37518. Up to 5874 conditions per place. [2025-02-06 18:48:10,575 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 215 selfloop transitions, 7 changer transitions 0/268 dead transitions. [2025-02-06 18:48:10,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 268 transitions, 2659 flow [2025-02-06 18:48:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:48:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:48:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 280 transitions. [2025-02-06 18:48:10,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2025-02-06 18:48:10,576 INFO L175 Difference]: Start difference. First operand has 235 places, 200 transitions, 1734 flow. Second operand 5 states and 280 transitions. [2025-02-06 18:48:10,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 268 transitions, 2659 flow [2025-02-06 18:48:10,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 268 transitions, 2555 flow, removed 12 selfloop flow, removed 14 redundant places. [2025-02-06 18:48:10,694 INFO L231 Difference]: Finished difference. Result has 216 places, 200 transitions, 1679 flow [2025-02-06 18:48:10,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1679, PETRI_PLACES=216, PETRI_TRANSITIONS=200} [2025-02-06 18:48:10,694 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 137 predicate places. [2025-02-06 18:48:10,694 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 200 transitions, 1679 flow [2025-02-06 18:48:10,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:10,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:10,695 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:10,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-06 18:48:10,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:10,899 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:10,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash -46091985, now seen corresponding path program 1 times [2025-02-06 18:48:10,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:10,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425829814] [2025-02-06 18:48:10,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:10,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:10,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:48:10,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:48:10,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:10,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:11,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425829814] [2025-02-06 18:48:11,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425829814] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049701778] [2025-02-06 18:48:11,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:11,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:11,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:11,165 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:11,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 18:48:11,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:48:11,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:48:11,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:11,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:11,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 18:48:11,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:11,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 18:48:11,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-06 18:48:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:48:11,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:11,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-06 18:48:11,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-02-06 18:48:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:48:11,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049701778] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:11,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:11,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2025-02-06 18:48:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143490670] [2025-02-06 18:48:11,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:11,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 18:48:11,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:11,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 18:48:11,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2025-02-06 18:48:11,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 86 [2025-02-06 18:48:11,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 200 transitions, 1679 flow. Second operand has 26 states, 26 states have (on average 40.88461538461539) internal successors, (1063), 26 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:11,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:11,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 86 [2025-02-06 18:48:11,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:13,478 INFO L124 PetriNetUnfolderBase]: 7319/16241 cut-off events. [2025-02-06 18:48:13,478 INFO L125 PetriNetUnfolderBase]: For 47291/48382 co-relation queries the response was YES. [2025-02-06 18:48:13,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56290 conditions, 16241 events. 7319/16241 cut-off events. For 47291/48382 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 158573 event pairs, 1791 based on Foata normal form. 663/16813 useless extension candidates. Maximal degree in co-relation 56234. Up to 2826 conditions per place. [2025-02-06 18:48:13,641 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 387 selfloop transitions, 52 changer transitions 2/484 dead transitions. [2025-02-06 18:48:13,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 484 transitions, 4471 flow [2025-02-06 18:48:13,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 18:48:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 18:48:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 827 transitions. [2025-02-06 18:48:13,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6010174418604651 [2025-02-06 18:48:13,642 INFO L175 Difference]: Start difference. First operand has 216 places, 200 transitions, 1679 flow. Second operand 16 states and 827 transitions. [2025-02-06 18:48:13,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 484 transitions, 4471 flow [2025-02-06 18:48:13,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 484 transitions, 4458 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:48:13,845 INFO L231 Difference]: Finished difference. Result has 231 places, 208 transitions, 1877 flow [2025-02-06 18:48:13,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1877, PETRI_PLACES=231, PETRI_TRANSITIONS=208} [2025-02-06 18:48:13,846 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 152 predicate places. [2025-02-06 18:48:13,846 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 208 transitions, 1877 flow [2025-02-06 18:48:13,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 40.88461538461539) internal successors, (1063), 26 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:13,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:13,846 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:13,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-06 18:48:14,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:14,047 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:14,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1428881652, now seen corresponding path program 1 times [2025-02-06 18:48:14,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:14,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675582640] [2025-02-06 18:48:14,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:14,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 18:48:14,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:48:14,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:14,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:14,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675582640] [2025-02-06 18:48:14,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675582640] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:14,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105978013] [2025-02-06 18:48:14,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:14,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:14,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:14,308 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:14,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 18:48:14,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 18:48:14,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:48:14,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:14,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:14,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 18:48:14,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:14,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 18:48:14,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 18:48:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:48:14,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:14,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 18:48:14,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-06 18:48:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-06 18:48:14,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105978013] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:14,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:14,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2025-02-06 18:48:14,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605090839] [2025-02-06 18:48:14,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:14,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 18:48:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:14,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 18:48:14,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2025-02-06 18:48:14,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2025-02-06 18:48:14,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 208 transitions, 1877 flow. Second operand has 26 states, 26 states have (on average 38.96153846153846) internal successors, (1013), 26 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:14,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:14,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2025-02-06 18:48:14,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:16,873 INFO L124 PetriNetUnfolderBase]: 7988/16584 cut-off events. [2025-02-06 18:48:16,874 INFO L125 PetriNetUnfolderBase]: For 59344/60754 co-relation queries the response was YES. [2025-02-06 18:48:16,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60026 conditions, 16584 events. 7988/16584 cut-off events. For 59344/60754 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 154865 event pairs, 1746 based on Foata normal form. 777/17292 useless extension candidates. Maximal degree in co-relation 59966. Up to 3496 conditions per place. [2025-02-06 18:48:17,014 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 360 selfloop transitions, 48 changer transitions 0/449 dead transitions. [2025-02-06 18:48:17,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 449 transitions, 4298 flow [2025-02-06 18:48:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:48:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:48:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 739 transitions. [2025-02-06 18:48:17,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5728682170542636 [2025-02-06 18:48:17,015 INFO L175 Difference]: Start difference. First operand has 231 places, 208 transitions, 1877 flow. Second operand 15 states and 739 transitions. [2025-02-06 18:48:17,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 449 transitions, 4298 flow [2025-02-06 18:48:17,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 449 transitions, 4249 flow, removed 1 selfloop flow, removed 9 redundant places. [2025-02-06 18:48:17,232 INFO L231 Difference]: Finished difference. Result has 237 places, 208 transitions, 1937 flow [2025-02-06 18:48:17,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1937, PETRI_PLACES=237, PETRI_TRANSITIONS=208} [2025-02-06 18:48:17,233 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 158 predicate places. [2025-02-06 18:48:17,233 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 208 transitions, 1937 flow [2025-02-06 18:48:17,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 38.96153846153846) internal successors, (1013), 26 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:17,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:17,233 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-06 18:48:17,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:17,434 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:17,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1345658607, now seen corresponding path program 1 times [2025-02-06 18:48:17,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:17,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226520988] [2025-02-06 18:48:17,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:17,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:17,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:48:17,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:48:17,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:17,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:48:17,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:17,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226520988] [2025-02-06 18:48:17,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226520988] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:17,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511898355] [2025-02-06 18:48:17,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:17,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:17,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:17,708 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:17,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 18:48:17,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:48:17,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:48:17,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:17,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:17,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 18:48:17,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:17,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 18:48:17,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 18:48:17,853 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:48:17,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 18:48:17,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-02-06 18:48:17,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-02-06 18:48:17,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 18:48:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:48:17,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:18,092 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_487 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142| Int)) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142| v_ArrVal_487) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_142|) 0)))) is different from false [2025-02-06 18:48:18,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:48:18,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2025-02-06 18:48:18,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:48:18,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2025-02-06 18:48:18,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 18:48:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2025-02-06 18:48:18,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511898355] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:18,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:18,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-02-06 18:48:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003658007] [2025-02-06 18:48:18,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:18,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-06 18:48:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:18,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-06 18:48:18,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=829, Unknown=8, NotChecked=58, Total=992 [2025-02-06 18:48:18,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 86 [2025-02-06 18:48:18,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 208 transitions, 1937 flow. Second operand has 32 states, 32 states have (on average 29.375) internal successors, (940), 32 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:18,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:18,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 86 [2025-02-06 18:48:18,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:21,574 INFO L124 PetriNetUnfolderBase]: 12177/21910 cut-off events. [2025-02-06 18:48:21,574 INFO L125 PetriNetUnfolderBase]: For 74536/76308 co-relation queries the response was YES. [2025-02-06 18:48:21,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81314 conditions, 21910 events. 12177/21910 cut-off events. For 74536/76308 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 186479 event pairs, 3065 based on Foata normal form. 1027/22821 useless extension candidates. Maximal degree in co-relation 81253. Up to 4650 conditions per place. [2025-02-06 18:48:21,944 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 554 selfloop transitions, 59 changer transitions 2/642 dead transitions. [2025-02-06 18:48:21,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 642 transitions, 6026 flow [2025-02-06 18:48:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 18:48:21,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 18:48:21,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 981 transitions. [2025-02-06 18:48:21,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45627906976744187 [2025-02-06 18:48:21,945 INFO L175 Difference]: Start difference. First operand has 237 places, 208 transitions, 1937 flow. Second operand 25 states and 981 transitions. [2025-02-06 18:48:21,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 642 transitions, 6026 flow [2025-02-06 18:48:22,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 642 transitions, 5928 flow, removed 2 selfloop flow, removed 11 redundant places. [2025-02-06 18:48:22,254 INFO L231 Difference]: Finished difference. Result has 255 places, 214 transitions, 2041 flow [2025-02-06 18:48:22,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2041, PETRI_PLACES=255, PETRI_TRANSITIONS=214} [2025-02-06 18:48:22,255 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 176 predicate places. [2025-02-06 18:48:22,255 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 214 transitions, 2041 flow [2025-02-06 18:48:22,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 29.375) internal successors, (940), 32 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:22,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:22,255 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:22,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 18:48:22,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-06 18:48:22,456 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:22,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1227682462, now seen corresponding path program 1 times [2025-02-06 18:48:22,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:22,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151259135] [2025-02-06 18:48:22,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:22,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:22,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:48:22,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:48:22,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:22,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:48:22,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:22,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151259135] [2025-02-06 18:48:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151259135] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:22,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581052493] [2025-02-06 18:48:22,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:22,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:22,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:22,719 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:22,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 18:48:22,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:48:22,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:48:22,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:22,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:22,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-06 18:48:22,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:22,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 18:48:22,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 18:48:22,868 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:48:22,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 18:48:22,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-06 18:48:22,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-06 18:48:22,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-06 18:48:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:48:22,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:23,085 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_516 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_144| Int)) (or (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_144| v_ArrVal_516) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_144|) 0)))) is different from false [2025-02-06 18:48:23,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:48:23,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2025-02-06 18:48:23,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:48:23,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2025-02-06 18:48:23,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 18:48:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2025-02-06 18:48:23,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581052493] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:23,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:23,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2025-02-06 18:48:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234282276] [2025-02-06 18:48:23,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:23,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 18:48:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:23,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 18:48:23,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=771, Unknown=6, NotChecked=56, Total=930 [2025-02-06 18:48:23,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2025-02-06 18:48:23,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 214 transitions, 2041 flow. Second operand has 31 states, 31 states have (on average 31.64516129032258) internal successors, (981), 31 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:23,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:23,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2025-02-06 18:48:23,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:26,338 INFO L124 PetriNetUnfolderBase]: 11891/20967 cut-off events. [2025-02-06 18:48:26,338 INFO L125 PetriNetUnfolderBase]: For 106857/108791 co-relation queries the response was YES. [2025-02-06 18:48:26,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82523 conditions, 20967 events. 11891/20967 cut-off events. For 106857/108791 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 172744 event pairs, 2237 based on Foata normal form. 1211/21869 useless extension candidates. Maximal degree in co-relation 82458. Up to 4541 conditions per place. [2025-02-06 18:48:26,716 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 453 selfloop transitions, 52 changer transitions 38/578 dead transitions. [2025-02-06 18:48:26,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 578 transitions, 6475 flow [2025-02-06 18:48:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:48:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:48:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 846 transitions. [2025-02-06 18:48:26,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4684385382059801 [2025-02-06 18:48:26,717 INFO L175 Difference]: Start difference. First operand has 255 places, 214 transitions, 2041 flow. Second operand 21 states and 846 transitions. [2025-02-06 18:48:26,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 578 transitions, 6475 flow [2025-02-06 18:48:27,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 578 transitions, 6168 flow, removed 31 selfloop flow, removed 15 redundant places. [2025-02-06 18:48:27,178 INFO L231 Difference]: Finished difference. Result has 263 places, 221 transitions, 2131 flow [2025-02-06 18:48:27,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2131, PETRI_PLACES=263, PETRI_TRANSITIONS=221} [2025-02-06 18:48:27,179 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 184 predicate places. [2025-02-06 18:48:27,179 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 221 transitions, 2131 flow [2025-02-06 18:48:27,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 31.64516129032258) internal successors, (981), 31 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:27,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:27,179 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:27,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-06 18:48:27,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-06 18:48:27,380 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:27,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1234256783, now seen corresponding path program 1 times [2025-02-06 18:48:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855894515] [2025-02-06 18:48:27,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:27,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:27,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:48:27,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:48:27,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:27,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:48:27,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:27,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855894515] [2025-02-06 18:48:27,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855894515] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:27,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867556977] [2025-02-06 18:48:27,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:27,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:27,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:27,685 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:27,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 18:48:27,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:48:27,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:48:27,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:27,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:27,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 18:48:27,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:27,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 18:48:27,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 18:48:27,836 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:48:27,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 18:48:27,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-06 18:48:27,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-06 18:48:27,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-02-06 18:48:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:48:27,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:28,068 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_544 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_544) c_~a1~0.base) (+ c_~a1~0.offset 4)) 2147483648)) is different from false [2025-02-06 18:48:28,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:48:28,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2025-02-06 18:48:28,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:48:28,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2025-02-06 18:48:28,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 18:48:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2025-02-06 18:48:28,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867556977] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:28,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:28,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2025-02-06 18:48:28,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120636238] [2025-02-06 18:48:28,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:28,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 18:48:28,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:28,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 18:48:28,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=894, Unknown=1, NotChecked=60, Total=1056 [2025-02-06 18:48:28,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 86 [2025-02-06 18:48:28,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 221 transitions, 2131 flow. Second operand has 33 states, 33 states have (on average 29.363636363636363) internal successors, (969), 33 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:28,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:28,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 86 [2025-02-06 18:48:28,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:31,935 INFO L124 PetriNetUnfolderBase]: 12736/22658 cut-off events. [2025-02-06 18:48:31,935 INFO L125 PetriNetUnfolderBase]: For 96865/98951 co-relation queries the response was YES. [2025-02-06 18:48:32,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90149 conditions, 22658 events. 12736/22658 cut-off events. For 96865/98951 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 190946 event pairs, 3851 based on Foata normal form. 1220/23732 useless extension candidates. Maximal degree in co-relation 90081. Up to 5558 conditions per place. [2025-02-06 18:48:32,226 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 567 selfloop transitions, 56 changer transitions 104/757 dead transitions. [2025-02-06 18:48:32,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 757 transitions, 7982 flow [2025-02-06 18:48:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 18:48:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-06 18:48:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1018 transitions. [2025-02-06 18:48:32,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4552772808586762 [2025-02-06 18:48:32,227 INFO L175 Difference]: Start difference. First operand has 263 places, 221 transitions, 2131 flow. Second operand 26 states and 1018 transitions. [2025-02-06 18:48:32,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 757 transitions, 7982 flow [2025-02-06 18:48:32,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 757 transitions, 7775 flow, removed 15 selfloop flow, removed 16 redundant places. [2025-02-06 18:48:32,560 INFO L231 Difference]: Finished difference. Result has 276 places, 225 transitions, 2217 flow [2025-02-06 18:48:32,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2217, PETRI_PLACES=276, PETRI_TRANSITIONS=225} [2025-02-06 18:48:32,561 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 197 predicate places. [2025-02-06 18:48:32,561 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 225 transitions, 2217 flow [2025-02-06 18:48:32,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 29.363636363636363) internal successors, (969), 33 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:32,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:32,561 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:32,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-06 18:48:32,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-06 18:48:32,762 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:32,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:32,762 INFO L85 PathProgramCache]: Analyzing trace with hash -596579427, now seen corresponding path program 1 times [2025-02-06 18:48:32,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:32,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980443643] [2025-02-06 18:48:32,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:32,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:32,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:48:32,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:48:32,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:32,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:48:33,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:33,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980443643] [2025-02-06 18:48:33,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980443643] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:33,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330757409] [2025-02-06 18:48:33,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:33,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:33,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:33,117 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:33,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-06 18:48:33,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 18:48:33,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 18:48:33,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:33,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:33,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 18:48:33,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:33,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 18:48:33,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 18:48:33,274 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 18:48:33,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 18:48:33,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-02-06 18:48:33,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2025-02-06 18:48:33,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 18:48:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:48:33,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:33,501 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_572) c_~a1~0.base) (+ c_~a1~0.offset 4)) 4294967296))) is different from false [2025-02-06 18:48:33,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:48:33,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2025-02-06 18:48:33,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:48:33,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2025-02-06 18:48:33,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 18:48:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2025-02-06 18:48:33,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330757409] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:33,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:33,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 31 [2025-02-06 18:48:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132485672] [2025-02-06 18:48:33,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:33,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 18:48:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:33,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 18:48:33,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=906, Unknown=1, NotChecked=60, Total=1056 [2025-02-06 18:48:33,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 86 [2025-02-06 18:48:33,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 225 transitions, 2217 flow. Second operand has 33 states, 33 states have (on average 24.575757575757574) internal successors, (811), 33 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:33,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:33,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 86 [2025-02-06 18:48:33,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:40,637 INFO L124 PetriNetUnfolderBase]: 25224/44223 cut-off events. [2025-02-06 18:48:40,637 INFO L125 PetriNetUnfolderBase]: For 248166/251444 co-relation queries the response was YES. [2025-02-06 18:48:41,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180319 conditions, 44223 events. 25224/44223 cut-off events. For 248166/251444 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 393030 event pairs, 5910 based on Foata normal form. 2162/45713 useless extension candidates. Maximal degree in co-relation 180248. Up to 6808 conditions per place. [2025-02-06 18:48:41,250 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 865 selfloop transitions, 76 changer transitions 52/1027 dead transitions. [2025-02-06 18:48:41,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1027 transitions, 11709 flow [2025-02-06 18:48:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-06 18:48:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-02-06 18:48:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1295 transitions. [2025-02-06 18:48:41,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3861061419200954 [2025-02-06 18:48:41,252 INFO L175 Difference]: Start difference. First operand has 276 places, 225 transitions, 2217 flow. Second operand 39 states and 1295 transitions. [2025-02-06 18:48:41,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1027 transitions, 11709 flow [2025-02-06 18:48:43,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1027 transitions, 11023 flow, removed 35 selfloop flow, removed 21 redundant places. [2025-02-06 18:48:43,204 INFO L231 Difference]: Finished difference. Result has 295 places, 251 transitions, 2711 flow [2025-02-06 18:48:43,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2711, PETRI_PLACES=295, PETRI_TRANSITIONS=251} [2025-02-06 18:48:43,206 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 216 predicate places. [2025-02-06 18:48:43,206 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 251 transitions, 2711 flow [2025-02-06 18:48:43,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 24.575757575757574) internal successors, (811), 33 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:43,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:43,207 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:43,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-06 18:48:43,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-06 18:48:43,408 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2025-02-06 18:48:43,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:43,409 INFO L85 PathProgramCache]: Analyzing trace with hash 343339976, now seen corresponding path program 2 times [2025-02-06 18:48:43,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:43,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570023278] [2025-02-06 18:48:43,410 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:48:43,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:43,425 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:48:43,435 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:48:43,435 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:48:43,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:48:43,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:43,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570023278] [2025-02-06 18:48:43,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570023278] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:48:43,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384972424] [2025-02-06 18:48:43,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:48:43,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:48:43,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:43,643 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:48:43,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-06 18:48:43,708 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-06 18:48:43,729 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 18:48:43,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:48:43,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:43,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 18:48:43,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:48:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:48:43,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:48:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:48:44,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384972424] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:48:44,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:48:44,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-02-06 18:48:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391091960] [2025-02-06 18:48:44,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:48:44,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 18:48:44,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:44,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 18:48:44,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2025-02-06 18:48:44,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2025-02-06 18:48:44,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 251 transitions, 2711 flow. Second operand has 28 states, 28 states have (on average 43.464285714285715) internal successors, (1217), 28 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:48:44,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:44,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2025-02-06 18:48:44,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand