./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-counter-determinism.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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:11:23,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:11:23,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:11:23,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:11:23,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:11:23,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:11:23,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:11:23,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:11:23,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:11:23,545 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:11:23,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:11:23,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:11:23,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:11:23,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:11:23,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:11:23,547 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:11:23,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:11:23,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:11:23,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:11:23,548 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 -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2025-02-08 14:11:23,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:11:23,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:11:23,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:11:23,750 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:11:23,750 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:11:23,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2025-02-08 14:11:24,271 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/06d2692db/9462e93dec56495ea30df93561d0fbda/FLAG4138a7934 [2025-02-08 14:11:25,876 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:11:25,882 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2025-02-08 14:11:25,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/06d2692db/9462e93dec56495ea30df93561d0fbda/FLAG4138a7934 [2025-02-08 14:11:26,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/06d2692db/9462e93dec56495ea30df93561d0fbda [2025-02-08 14:11:26,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:11:26,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:11:26,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:11:26,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:11:26,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:11:26,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a2f62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26, skipping insertion in model container [2025-02-08 14:11:26,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:11:26,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:11:26,411 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:11:26,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:11:26,446 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:11:26,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26 WrapperNode [2025-02-08 14:11:26,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:11:26,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:11:26,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:11:26,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:11:26,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,479 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 98 [2025-02-08 14:11:26,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:11:26,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:11:26,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:11:26,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:11:26,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,512 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 14:11:26,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,521 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:11:26,532 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:11:26,532 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:11:26,532 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:11:26,534 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (1/1) ... [2025-02-08 14:11:26,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:11:26,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:26,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:11:26,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:11:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:11:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:11:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:11:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:11:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:11:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:11:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:11:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:11:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:11:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:11:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:11:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:11:26,593 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:11:26,681 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:11:26,683 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:11:26,883 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:11:26,883 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:11:26,975 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:11:26,975 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:11:26,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:26 BoogieIcfgContainer [2025-02-08 14:11:26,976 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:11:26,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:11:26,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:11:26,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:11:26,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:11:26" (1/3) ... [2025-02-08 14:11:26,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298b929f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:11:26, skipping insertion in model container [2025-02-08 14:11:26,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:26" (2/3) ... [2025-02-08 14:11:26,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298b929f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:11:26, skipping insertion in model container [2025-02-08 14:11:26,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:26" (3/3) ... [2025-02-08 14:11:26,982 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2025-02-08 14:11:26,993 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:11:26,994 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 59 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2025-02-08 14:11:26,994 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:11:27,061 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:11:27,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2025-02-08 14:11:27,118 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2025-02-08 14:11:27,124 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:11:27,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 167 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2025-02-08 14:11:27,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2025-02-08 14:11:27,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2025-02-08 14:11:27,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:11:27,150 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;@4d4516ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:11:27,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-02-08 14:11:27,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:11:27,154 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2025-02-08 14:11:27,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:11:27,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:27,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:11:27,155 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:11:27,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash 342489275, now seen corresponding path program 1 times [2025-02-08 14:11:27,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700108121] [2025-02-08 14:11:27,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:27,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:11:27,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:11:27,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:27,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:27,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700108121] [2025-02-08 14:11:27,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700108121] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:27,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:27,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:11:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484691892] [2025-02-08 14:11:27,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:27,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:27,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:27,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:27,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2025-02-08 14:11:27,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:27,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:27,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2025-02-08 14:11:27,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:29,441 INFO L124 PetriNetUnfolderBase]: 26633/39153 cut-off events. [2025-02-08 14:11:29,442 INFO L125 PetriNetUnfolderBase]: For 1918/1918 co-relation queries the response was YES. [2025-02-08 14:11:29,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75527 conditions, 39153 events. 26633/39153 cut-off events. For 1918/1918 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 285087 event pairs, 6878 based on Foata normal form. 0/28295 useless extension candidates. Maximal degree in co-relation 69156. Up to 29555 conditions per place. [2025-02-08 14:11:29,713 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 69 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2025-02-08 14:11:29,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 351 flow [2025-02-08 14:11:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2025-02-08 14:11:29,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2025-02-08 14:11:29,728 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 128 transitions. [2025-02-08 14:11:29,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 351 flow [2025-02-08 14:11:29,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 327 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:11:29,816 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 136 flow [2025-02-08 14:11:29,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2025-02-08 14:11:29,821 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2025-02-08 14:11:29,821 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 136 flow [2025-02-08 14:11:29,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:29,821 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:29,821 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:29,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:11:29,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:11:29,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:29,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1580275457, now seen corresponding path program 1 times [2025-02-08 14:11:29,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:29,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666932429] [2025-02-08 14:11:29,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:29,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:29,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:29,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:29,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:29,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666932429] [2025-02-08 14:11:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666932429] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:29,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:29,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134910689] [2025-02-08 14:11:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:29,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:29,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:29,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:29,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:29,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-08 14:11:29,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:29,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:29,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-08 14:11:29,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:32,313 INFO L124 PetriNetUnfolderBase]: 40657/59237 cut-off events. [2025-02-08 14:11:32,313 INFO L125 PetriNetUnfolderBase]: For 3180/3180 co-relation queries the response was YES. [2025-02-08 14:11:32,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118597 conditions, 59237 events. 40657/59237 cut-off events. For 3180/3180 co-relation queries the response was YES. Maximal size of possible extension queue 2684. Compared 435533 event pairs, 23154 based on Foata normal form. 1026/45352 useless extension candidates. Maximal degree in co-relation 52747. Up to 42823 conditions per place. [2025-02-08 14:11:32,867 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 104 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2025-02-08 14:11:32,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 120 transitions, 490 flow [2025-02-08 14:11:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2025-02-08 14:11:32,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7016129032258065 [2025-02-08 14:11:32,869 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 136 flow. Second operand 4 states and 174 transitions. [2025-02-08 14:11:32,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 120 transitions, 490 flow [2025-02-08 14:11:32,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:32,886 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 163 flow [2025-02-08 14:11:32,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2025-02-08 14:11:32,890 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2025-02-08 14:11:32,890 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 163 flow [2025-02-08 14:11:32,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:32,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:32,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:32,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:11:32,890 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:11:32,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash -849754612, now seen corresponding path program 1 times [2025-02-08 14:11:32,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:32,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672046664] [2025-02-08 14:11:32,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:32,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:32,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:11:32,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:11:32,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:32,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:33,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:33,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672046664] [2025-02-08 14:11:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672046664] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:33,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:11:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447588210] [2025-02-08 14:11:33,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:33,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:33,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:33,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:33,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2025-02-08 14:11:33,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:33,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:33,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2025-02-08 14:11:33,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:35,074 INFO L124 PetriNetUnfolderBase]: 34577/51715 cut-off events. [2025-02-08 14:11:35,075 INFO L125 PetriNetUnfolderBase]: For 12416/14144 co-relation queries the response was YES. [2025-02-08 14:11:35,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112171 conditions, 51715 events. 34577/51715 cut-off events. For 12416/14144 co-relation queries the response was YES. Maximal size of possible extension queue 1971. Compared 380610 event pairs, 8936 based on Foata normal form. 0/39779 useless extension candidates. Maximal degree in co-relation 64010. Up to 37724 conditions per place. [2025-02-08 14:11:35,302 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 72 selfloop transitions, 2 changer transitions 1/89 dead transitions. [2025-02-08 14:11:35,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 405 flow [2025-02-08 14:11:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2025-02-08 14:11:35,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:11:35,316 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 163 flow. Second operand 3 states and 124 transitions. [2025-02-08 14:11:35,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 405 flow [2025-02-08 14:11:35,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:35,343 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 176 flow [2025-02-08 14:11:35,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2025-02-08 14:11:35,344 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2025-02-08 14:11:35,345 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 176 flow [2025-02-08 14:11:35,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:35,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:35,345 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:35,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:11:35,345 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:11:35,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash -871124031, now seen corresponding path program 1 times [2025-02-08 14:11:35,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:35,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973469889] [2025-02-08 14:11:35,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:35,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:35,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:35,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:35,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:35,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973469889] [2025-02-08 14:11:35,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973469889] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:35,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:35,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338947699] [2025-02-08 14:11:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:35,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:35,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:35,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:35,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2025-02-08 14:11:35,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:35,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:35,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2025-02-08 14:11:35,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:37,654 INFO L124 PetriNetUnfolderBase]: 31801/47207 cut-off events. [2025-02-08 14:11:37,654 INFO L125 PetriNetUnfolderBase]: For 12756/13684 co-relation queries the response was YES. [2025-02-08 14:11:37,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107818 conditions, 47207 events. 31801/47207 cut-off events. For 12756/13684 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 343708 event pairs, 19145 based on Foata normal form. 0/38364 useless extension candidates. Maximal degree in co-relation 58111. Up to 29306 conditions per place. [2025-02-08 14:11:37,902 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 79 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2025-02-08 14:11:37,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 444 flow [2025-02-08 14:11:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2025-02-08 14:11:37,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2025-02-08 14:11:37,903 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 176 flow. Second operand 3 states and 130 transitions. [2025-02-08 14:11:37,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 444 flow [2025-02-08 14:11:37,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:37,924 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 198 flow [2025-02-08 14:11:37,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2025-02-08 14:11:37,925 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2025-02-08 14:11:37,925 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 198 flow [2025-02-08 14:11:37,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:37,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:37,925 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:37,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:11:37,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:11:37,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash -871124030, now seen corresponding path program 1 times [2025-02-08 14:11:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:37,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520063186] [2025-02-08 14:11:37,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:37,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:37,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:37,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:37,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:37,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:37,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520063186] [2025-02-08 14:11:37,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520063186] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:37,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:37,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870600590] [2025-02-08 14:11:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:37,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:37,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:37,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:37,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2025-02-08 14:11:37,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:37,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:37,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2025-02-08 14:11:37,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:40,527 INFO L124 PetriNetUnfolderBase]: 37799/56460 cut-off events. [2025-02-08 14:11:40,527 INFO L125 PetriNetUnfolderBase]: For 31720/31854 co-relation queries the response was YES. [2025-02-08 14:11:40,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137154 conditions, 56460 events. 37799/56460 cut-off events. For 31720/31854 co-relation queries the response was YES. Maximal size of possible extension queue 1779. Compared 416971 event pairs, 5739 based on Foata normal form. 1533/51757 useless extension candidates. Maximal degree in co-relation 68027. Up to 24870 conditions per place. [2025-02-08 14:11:40,781 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 107 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2025-02-08 14:11:40,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 598 flow [2025-02-08 14:11:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2025-02-08 14:11:40,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7258064516129032 [2025-02-08 14:11:40,784 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 198 flow. Second operand 4 states and 180 transitions. [2025-02-08 14:11:40,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 598 flow [2025-02-08 14:11:40,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 125 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:40,926 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 226 flow [2025-02-08 14:11:40,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2025-02-08 14:11:40,927 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2025-02-08 14:11:40,927 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 226 flow [2025-02-08 14:11:40,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:40,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:40,928 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:40,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:11:40,928 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:11:40,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:40,928 INFO L85 PathProgramCache]: Analyzing trace with hash -849288572, now seen corresponding path program 1 times [2025-02-08 14:11:40,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:40,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578237958] [2025-02-08 14:11:40,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:40,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:40,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:40,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:40,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:40,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:40,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:40,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578237958] [2025-02-08 14:11:40,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578237958] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:40,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853003777] [2025-02-08 14:11:40,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:40,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:40,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:40,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:40,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:11:41,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:41,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:41,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:41,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:41,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:41,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:41,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:41,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853003777] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:41,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:41,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2025-02-08 14:11:41,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672092492] [2025-02-08 14:11:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:41,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:41,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:41,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:41,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:11:41,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2025-02-08 14:11:41,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:41,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:41,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2025-02-08 14:11:41,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:44,408 INFO L124 PetriNetUnfolderBase]: 47163/69999 cut-off events. [2025-02-08 14:11:44,408 INFO L125 PetriNetUnfolderBase]: For 58123/59326 co-relation queries the response was YES. [2025-02-08 14:11:44,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171376 conditions, 69999 events. 47163/69999 cut-off events. For 58123/59326 co-relation queries the response was YES. Maximal size of possible extension queue 2138. Compared 522205 event pairs, 16808 based on Foata normal form. 2148/64060 useless extension candidates. Maximal degree in co-relation 67293. Up to 34736 conditions per place. [2025-02-08 14:11:44,796 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 80 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2025-02-08 14:11:44,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 509 flow [2025-02-08 14:11:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2025-02-08 14:11:44,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6008064516129032 [2025-02-08 14:11:44,798 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 226 flow. Second operand 4 states and 149 transitions. [2025-02-08 14:11:44,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 509 flow [2025-02-08 14:11:44,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 101 transitions, 501 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:44,999 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 257 flow [2025-02-08 14:11:44,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2025-02-08 14:11:44,999 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2025-02-08 14:11:45,000 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 257 flow [2025-02-08 14:11:45,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:45,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:45,000 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:45,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:45,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:45,204 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:11:45,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash -570382128, now seen corresponding path program 1 times [2025-02-08 14:11:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:45,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359073926] [2025-02-08 14:11:45,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:45,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:11:45,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:11:45,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:45,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:45,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359073926] [2025-02-08 14:11:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359073926] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:45,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:45,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586910129] [2025-02-08 14:11:45,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:45,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:45,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:45,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:45,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:45,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-08 14:11:45,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:45,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:45,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-08 14:11:45,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:50,745 INFO L124 PetriNetUnfolderBase]: 73155/106504 cut-off events. [2025-02-08 14:11:50,745 INFO L125 PetriNetUnfolderBase]: For 103028/105114 co-relation queries the response was YES. [2025-02-08 14:11:50,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274499 conditions, 106504 events. 73155/106504 cut-off events. For 103028/105114 co-relation queries the response was YES. Maximal size of possible extension queue 3158. Compared 803168 event pairs, 40798 based on Foata normal form. 1944/97313 useless extension candidates. Maximal degree in co-relation 109986. Up to 76203 conditions per place. [2025-02-08 14:11:51,494 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 127 selfloop transitions, 4 changer transitions 0/143 dead transitions. [2025-02-08 14:11:51,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 143 transitions, 877 flow [2025-02-08 14:11:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2025-02-08 14:11:51,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2025-02-08 14:11:51,496 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 257 flow. Second operand 4 states and 164 transitions. [2025-02-08 14:11:51,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 143 transitions, 877 flow [2025-02-08 14:11:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 143 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:51,749 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 279 flow [2025-02-08 14:11:51,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2025-02-08 14:11:51,750 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2025-02-08 14:11:51,750 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 279 flow [2025-02-08 14:11:51,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:51,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:51,751 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:51,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:11:51,751 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:11:51,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:51,751 INFO L85 PathProgramCache]: Analyzing trace with hash 368442341, now seen corresponding path program 1 times [2025-02-08 14:11:51,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:51,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921432916] [2025-02-08 14:11:51,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:51,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:11:51,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:11:51,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:51,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:51,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:51,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921432916] [2025-02-08 14:11:51,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921432916] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:51,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:51,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927262804] [2025-02-08 14:11:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:51,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:51,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:51,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:51,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-08 14:11:51,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:51,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:51,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-08 14:11:51,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:59,862 INFO L124 PetriNetUnfolderBase]: 107663/160362 cut-off events. [2025-02-08 14:11:59,862 INFO L125 PetriNetUnfolderBase]: For 159565/166073 co-relation queries the response was YES. [2025-02-08 14:12:00,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429643 conditions, 160362 events. 107663/160362 cut-off events. For 159565/166073 co-relation queries the response was YES. Maximal size of possible extension queue 4694. Compared 1317469 event pairs, 64359 based on Foata normal form. 2599/145269 useless extension candidates. Maximal degree in co-relation 144783. Up to 97178 conditions per place. [2025-02-08 14:12:00,880 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 135 selfloop transitions, 4 changer transitions 0/151 dead transitions. [2025-02-08 14:12:00,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 151 transitions, 917 flow [2025-02-08 14:12:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2025-02-08 14:12:00,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2025-02-08 14:12:00,882 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 279 flow. Second operand 4 states and 167 transitions. [2025-02-08 14:12:00,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 151 transitions, 917 flow [2025-02-08 14:12:01,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 151 transitions, 908 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:12:01,525 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 305 flow [2025-02-08 14:12:01,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=305, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2025-02-08 14:12:01,525 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2025-02-08 14:12:01,525 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 305 flow [2025-02-08 14:12:01,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:01,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:01,525 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:01,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:12:01,526 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-02-08 14:12:01,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash -122518392, now seen corresponding path program 1 times [2025-02-08 14:12:01,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:01,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027865764] [2025-02-08 14:12:01,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:01,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:01,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:12:01,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:12:01,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:01,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:01,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027865764] [2025-02-08 14:12:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027865764] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720624999] [2025-02-08 14:12:01,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:01,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:01,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:01,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:12:01,606 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