./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:26:24,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:26:24,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:26:24,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:26:24,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:26:24,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:26:24,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:26:24,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:26:24,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:26:24,550 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:26:24,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:26:24,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:26:24,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:26:24,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:26:24,551 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:26:24,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:26:24,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:26:24,551 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:26:24,552 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:26:24,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:26:24,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:26:24,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:26:24,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:26:24,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:26:24,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:26:24,553 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/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 -> bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 [2025-03-04 15:26:24,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:26:24,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:26:24,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:26:24,785 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:26:24,785 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:26:24,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2025-03-04 15:26:25,910 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49b2eab0/8b502dd219234db08b4cda4dceb040a6/FLAGf8994d53d [2025-03-04 15:26:26,165 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:26:26,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2025-03-04 15:26:26,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49b2eab0/8b502dd219234db08b4cda4dceb040a6/FLAGf8994d53d [2025-03-04 15:26:26,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49b2eab0/8b502dd219234db08b4cda4dceb040a6 [2025-03-04 15:26:26,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:26:26,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:26:26,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:26:26,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:26:26,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:26:26,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad07491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26, skipping insertion in model container [2025-03-04 15:26:26,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:26:26,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:26:26,648 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:26:26,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:26:26,675 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:26:26,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26 WrapperNode [2025-03-04 15:26:26,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:26:26,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:26:26,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:26:26,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:26:26,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,700 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 121 [2025-03-04 15:26:26,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:26:26,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:26:26,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:26:26,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:26:26,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,708 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,721 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-04 15:26:26,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,725 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:26:26,730 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:26:26,730 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:26:26,730 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:26:26,730 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (1/1) ... [2025-03-04 15:26:26,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:26:26,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:26,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:26:26,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:26:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:26:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:26:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:26:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:26:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:26:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 15:26:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 15:26:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:26:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:26:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:26:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:26:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:26:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:26:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:26:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:26:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:26:26,776 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:26:26,855 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:26:26,856 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:26:27,069 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:26:27,069 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:26:27,197 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:26:27,198 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:26:27,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:27 BoogieIcfgContainer [2025-03-04 15:26:27,199 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:26:27,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:26:27,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:26:27,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:26:27,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:26:26" (1/3) ... [2025-03-04 15:26:27,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692b7833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:26:27, skipping insertion in model container [2025-03-04 15:26:27,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:26" (2/3) ... [2025-03-04 15:26:27,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692b7833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:26:27, skipping insertion in model container [2025-03-04 15:26:27,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:27" (3/3) ... [2025-03-04 15:26:27,208 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2025-03-04 15:26:27,220 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:26:27,221 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-min-max-1.wvr.c that has 4 procedures, 61 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2025-03-04 15:26:27,221 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:26:27,277 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 15:26:27,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 65 transitions, 151 flow [2025-03-04 15:26:27,332 INFO L124 PetriNetUnfolderBase]: 5/62 cut-off events. [2025-03-04 15:26:27,334 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 15:26:27,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 5/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2025-03-04 15:26:27,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 65 transitions, 151 flow [2025-03-04 15:26:27,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 59 transitions, 130 flow [2025-03-04 15:26:27,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:26:27,355 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;@6055c4cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:26:27,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-04 15:26:27,362 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:26:27,363 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2025-03-04 15:26:27,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:26:27,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:27,364 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:27,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:27,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:27,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1504611625, now seen corresponding path program 1 times [2025-03-04 15:26:27,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:27,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261631401] [2025-03-04 15:26:27,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:27,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:27,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 15:26:27,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 15:26:27,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:27,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:27,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:27,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261631401] [2025-03-04 15:26:27,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261631401] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:27,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:27,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:27,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476143909] [2025-03-04 15:26:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:27,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:27,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:27,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:27,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:27,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-03-04 15:26:27,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-04 15:26:27,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:27,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-03-04 15:26:27,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:28,120 INFO L124 PetriNetUnfolderBase]: 1696/2949 cut-off events. [2025-03-04 15:26:28,120 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2025-03-04 15:26:28,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5542 conditions, 2949 events. 1696/2949 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17510 event pairs, 1262 based on Foata normal form. 1/2362 useless extension candidates. Maximal degree in co-relation 5306. Up to 2392 conditions per place. [2025-03-04 15:26:28,142 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 44 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2025-03-04 15:26:28,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 232 flow [2025-03-04 15:26:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:28,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-03-04 15:26:28,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2025-03-04 15:26:28,153 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 130 flow. Second operand 4 states and 118 transitions. [2025-03-04 15:26:28,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 232 flow [2025-03-04 15:26:28,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 226 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:26:28,162 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 153 flow [2025-03-04 15:26:28,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2025-03-04 15:26:28,166 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2025-03-04 15:26:28,166 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 153 flow [2025-03-04 15:26:28,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-04 15:26:28,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:28,167 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:28,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:26:28,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:28,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1606580344, now seen corresponding path program 1 times [2025-03-04 15:26:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:28,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976678647] [2025-03-04 15:26:28,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:28,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:26:28,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:26:28,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:28,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:28,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:28,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976678647] [2025-03-04 15:26:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976678647] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:28,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892919807] [2025-03-04 15:26:28,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:28,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:28,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:28,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:28,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:26:28,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 15:26:28,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 15:26:28,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:28,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:28,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:26:28,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:28,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:26:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892919807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:28,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:26:28,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:26:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834808483] [2025-03-04 15:26:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:28,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:28,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:28,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:28,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:26:28,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-03-04 15:26:28,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-03-04 15:26:28,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:28,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-03-04 15:26:28,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:28,680 INFO L124 PetriNetUnfolderBase]: 1696/2948 cut-off events. [2025-03-04 15:26:28,680 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-03-04 15:26:28,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 2948 events. 1696/2948 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17548 event pairs, 1262 based on Foata normal form. 1/2362 useless extension candidates. Maximal degree in co-relation 5496. Up to 2387 conditions per place. [2025-03-04 15:26:28,696 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 40 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2025-03-04 15:26:28,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 243 flow [2025-03-04 15:26:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2025-03-04 15:26:28,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2025-03-04 15:26:28,700 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 153 flow. Second operand 6 states and 150 transitions. [2025-03-04 15:26:28,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 243 flow [2025-03-04 15:26:28,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:28,702 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 160 flow [2025-03-04 15:26:28,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2025-03-04 15:26:28,703 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2025-03-04 15:26:28,703 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 160 flow [2025-03-04 15:26:28,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-03-04 15:26:28,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:28,703 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:28,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:26:28,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:28,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:28,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1735616526, now seen corresponding path program 1 times [2025-03-04 15:26:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814563988] [2025-03-04 15:26:28,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:28,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:26:28,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:26:28,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:28,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:29,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814563988] [2025-03-04 15:26:29,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814563988] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192374285] [2025-03-04 15:26:29,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:29,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:29,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:29,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:29,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:26:29,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:26:29,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:26:29,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:29,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:29,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:26:29,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:29,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:29,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192374285] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:29,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:29,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:26:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031083589] [2025-03-04 15:26:29,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:29,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:26:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:29,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:26:29,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:26:29,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-03-04 15:26:29,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 160 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2025-03-04 15:26:29,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:29,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-03-04 15:26:29,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:29,432 INFO L124 PetriNetUnfolderBase]: 1699/2960 cut-off events. [2025-03-04 15:26:29,432 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2025-03-04 15:26:29,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5567 conditions, 2960 events. 1699/2960 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17596 event pairs, 1262 based on Foata normal form. 3/2374 useless extension candidates. Maximal degree in co-relation 5497. Up to 2394 conditions per place. [2025-03-04 15:26:29,442 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 43 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2025-03-04 15:26:29,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 326 flow [2025-03-04 15:26:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:26:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:26:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2025-03-04 15:26:29,444 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3523076923076923 [2025-03-04 15:26:29,444 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 160 flow. Second operand 10 states and 229 transitions. [2025-03-04 15:26:29,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 326 flow [2025-03-04 15:26:29,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 280 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-04 15:26:29,446 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 212 flow [2025-03-04 15:26:29,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=212, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2025-03-04 15:26:29,447 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2025-03-04 15:26:29,447 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 212 flow [2025-03-04 15:26:29,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2025-03-04 15:26:29,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:29,447 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] [2025-03-04 15:26:29,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:26:29,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-04 15:26:29,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:29,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1120825003, now seen corresponding path program 1 times [2025-03-04 15:26:29,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:29,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568408841] [2025-03-04 15:26:29,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:29,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 15:26:29,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 15:26:29,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:29,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:29,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:29,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568408841] [2025-03-04 15:26:29,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568408841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:29,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:29,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:29,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545689470] [2025-03-04 15:26:29,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:29,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:29,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:29,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:29,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:29,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-03-04 15:26:29,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-04 15:26:29,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:29,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-03-04 15:26:29,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:30,090 INFO L124 PetriNetUnfolderBase]: 3162/4851 cut-off events. [2025-03-04 15:26:30,091 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2025-03-04 15:26:30,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9686 conditions, 4851 events. 3162/4851 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 26138 event pairs, 1721 based on Foata normal form. 74/4068 useless extension candidates. Maximal degree in co-relation 9652. Up to 3166 conditions per place. [2025-03-04 15:26:30,116 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 94 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2025-03-04 15:26:30,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 494 flow [2025-03-04 15:26:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2025-03-04 15:26:30,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5692307692307692 [2025-03-04 15:26:30,118 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 212 flow. Second operand 4 states and 148 transitions. [2025-03-04 15:26:30,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 494 flow [2025-03-04 15:26:30,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 483 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-04 15:26:30,121 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 230 flow [2025-03-04 15:26:30,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2025-03-04 15:26:30,122 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2025-03-04 15:26:30,122 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 230 flow [2025-03-04 15:26:30,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-04 15:26:30,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:30,124 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, 1, 1] [2025-03-04 15:26:30,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:26:30,124 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:30,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash 138767944, now seen corresponding path program 1 times [2025-03-04 15:26:30,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:30,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808341654] [2025-03-04 15:26:30,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:30,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:26:30,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:26:30,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:30,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:30,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:30,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808341654] [2025-03-04 15:26:30,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808341654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:30,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465690591] [2025-03-04 15:26:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:30,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:30,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:30,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:30,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:30,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-03-04 15:26:30,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-04 15:26:30,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:30,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-03-04 15:26:30,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:30,652 INFO L124 PetriNetUnfolderBase]: 4294/6570 cut-off events. [2025-03-04 15:26:30,652 INFO L125 PetriNetUnfolderBase]: For 615/892 co-relation queries the response was YES. [2025-03-04 15:26:30,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14146 conditions, 6570 events. 4294/6570 cut-off events. For 615/892 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 35970 event pairs, 2336 based on Foata normal form. 296/6050 useless extension candidates. Maximal degree in co-relation 14110. Up to 4266 conditions per place. [2025-03-04 15:26:30,683 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 98 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2025-03-04 15:26:30,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 114 transitions, 542 flow [2025-03-04 15:26:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2025-03-04 15:26:30,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5615384615384615 [2025-03-04 15:26:30,685 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 230 flow. Second operand 4 states and 146 transitions. [2025-03-04 15:26:30,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 114 transitions, 542 flow [2025-03-04 15:26:30,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:30,689 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 256 flow [2025-03-04 15:26:30,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2025-03-04 15:26:30,690 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2025-03-04 15:26:30,690 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 256 flow [2025-03-04 15:26:30,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-04 15:26:30,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:30,690 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:30,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:26:30,690 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:30,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1329866273, now seen corresponding path program 2 times [2025-03-04 15:26:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:30,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349833046] [2025-03-04 15:26:30,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:26:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:30,698 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:26:30,704 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 28 statements. [2025-03-04 15:26:30,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:26:30,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:26:30,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:30,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349833046] [2025-03-04 15:26:30,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349833046] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:30,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694316857] [2025-03-04 15:26:30,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:26:30,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:30,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:30,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:30,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:26:30,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:26:30,826 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 28 statements. [2025-03-04 15:26:30,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:26:30,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:30,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 15:26:30,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:26:30,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:26:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694316857] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:30,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:30,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-03-04 15:26:30,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828526066] [2025-03-04 15:26:30,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:30,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:30,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:30,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:30,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:30,919 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-03-04 15:26:30,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-03-04 15:26:30,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:30,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-03-04 15:26:30,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:31,341 INFO L124 PetriNetUnfolderBase]: 3129/5311 cut-off events. [2025-03-04 15:26:31,341 INFO L125 PetriNetUnfolderBase]: For 827/1097 co-relation queries the response was YES. [2025-03-04 15:26:31,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11755 conditions, 5311 events. 3129/5311 cut-off events. For 827/1097 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 32446 event pairs, 2336 based on Foata normal form. 207/5061 useless extension candidates. Maximal degree in co-relation 11722. Up to 4351 conditions per place. [2025-03-04 15:26:31,362 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 40 selfloop transitions, 19 changer transitions 0/75 dead transitions. [2025-03-04 15:26:31,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 364 flow [2025-03-04 15:26:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-03-04 15:26:31,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37435897435897436 [2025-03-04 15:26:31,363 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 256 flow. Second operand 6 states and 146 transitions. [2025-03-04 15:26:31,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 364 flow [2025-03-04 15:26:31,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 351 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-03-04 15:26:31,370 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 271 flow [2025-03-04 15:26:31,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2025-03-04 15:26:31,371 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2025-03-04 15:26:31,371 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 271 flow [2025-03-04 15:26:31,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-03-04 15:26:31,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:31,372 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:31,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 15:26:31,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:31,573 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:31,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1044292820, now seen corresponding path program 1 times [2025-03-04 15:26:31,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:31,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944526135] [2025-03-04 15:26:31,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:31,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:31,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-04 15:26:31,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 15:26:31,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:31,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:26:31,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:31,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944526135] [2025-03-04 15:26:31,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944526135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:31,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:31,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:26:31,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25823769] [2025-03-04 15:26:31,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:31,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:31,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:31,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:31,660 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-03-04 15:26:31,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2025-03-04 15:26:31,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:31,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-03-04 15:26:31,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:31,946 INFO L124 PetriNetUnfolderBase]: 3128/5310 cut-off events. [2025-03-04 15:26:31,946 INFO L125 PetriNetUnfolderBase]: For 817/1087 co-relation queries the response was YES. [2025-03-04 15:26:31,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 5310 events. 3128/5310 cut-off events. For 817/1087 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 32371 event pairs, 2336 based on Foata normal form. 206/5056 useless extension candidates. Maximal degree in co-relation 11460. Up to 4355 conditions per place. [2025-03-04 15:26:31,966 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 55 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2025-03-04 15:26:31,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 74 transitions, 382 flow [2025-03-04 15:26:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-03-04 15:26:31,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2025-03-04 15:26:31,967 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 271 flow. Second operand 4 states and 122 transitions. [2025-03-04 15:26:31,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 74 transitions, 382 flow [2025-03-04 15:26:31,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 346 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 15:26:31,973 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 236 flow [2025-03-04 15:26:31,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2025-03-04 15:26:31,973 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2025-03-04 15:26:31,973 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 236 flow [2025-03-04 15:26:31,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2025-03-04 15:26:31,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:31,974 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:31,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 15:26:31,974 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:31,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash -867100189, now seen corresponding path program 1 times [2025-03-04 15:26:31,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:31,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757091396] [2025-03-04 15:26:31,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:31,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:31,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 15:26:31,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 15:26:31,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:31,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:26:32,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757091396] [2025-03-04 15:26:32,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757091396] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641056968] [2025-03-04 15:26:32,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:32,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:32,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:32,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:32,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:26:32,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 15:26:32,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 15:26:32,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:32,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:32,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 15:26:32,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:32,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641056968] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:32,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:32,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-03-04 15:26:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757983532] [2025-03-04 15:26:32,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:32,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 15:26:32,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:32,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 15:26:32,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-03-04 15:26:32,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 65 [2025-03-04 15:26:32,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 236 flow. Second operand has 19 states, 19 states have (on average 15.947368421052632) internal successors, (303), 19 states have internal predecessors, (303), 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) [2025-03-04 15:26:32,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:32,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 65 [2025-03-04 15:26:32,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:33,546 INFO L124 PetriNetUnfolderBase]: 6745/10352 cut-off events. [2025-03-04 15:26:33,546 INFO L125 PetriNetUnfolderBase]: For 1606/2082 co-relation queries the response was YES. [2025-03-04 15:26:33,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23346 conditions, 10352 events. 6745/10352 cut-off events. For 1606/2082 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 61760 event pairs, 1900 based on Foata normal form. 496/9942 useless extension candidates. Maximal degree in co-relation 23302. Up to 1850 conditions per place. [2025-03-04 15:26:33,583 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 191 selfloop transitions, 25 changer transitions 8/235 dead transitions. [2025-03-04 15:26:33,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 235 transitions, 1114 flow [2025-03-04 15:26:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:26:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:26:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 384 transitions. [2025-03-04 15:26:33,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.421978021978022 [2025-03-04 15:26:33,585 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 236 flow. Second operand 14 states and 384 transitions. [2025-03-04 15:26:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 235 transitions, 1114 flow [2025-03-04 15:26:33,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 235 transitions, 1108 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:33,596 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 302 flow [2025-03-04 15:26:33,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=302, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2025-03-04 15:26:33,596 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 25 predicate places. [2025-03-04 15:26:33,596 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 302 flow [2025-03-04 15:26:33,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.947368421052632) internal successors, (303), 19 states have internal predecessors, (303), 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) [2025-03-04 15:26:33,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:33,597 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:33,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:26:33,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:33,797 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:33,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:33,798 INFO L85 PathProgramCache]: Analyzing trace with hash -161791818, now seen corresponding path program 1 times [2025-03-04 15:26:33,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:33,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046366698] [2025-03-04 15:26:33,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:33,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:33,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 15:26:33,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 15:26:33,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:33,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:26:33,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:33,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046366698] [2025-03-04 15:26:33,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046366698] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:33,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384630153] [2025-03-04 15:26:33,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:33,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:33,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:33,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:33,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:26:33,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 15:26:33,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 15:26:33,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:33,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:33,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 15:26:33,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:34,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:34,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384630153] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:34,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-03-04 15:26:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721512101] [2025-03-04 15:26:34,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:34,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 15:26:34,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:34,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 15:26:34,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-03-04 15:26:34,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 65 [2025-03-04 15:26:34,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 302 flow. Second operand has 19 states, 19 states have (on average 16.157894736842106) internal successors, (307), 19 states have internal predecessors, (307), 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) [2025-03-04 15:26:34,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:34,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 65 [2025-03-04 15:26:34,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:35,243 INFO L124 PetriNetUnfolderBase]: 6372/9769 cut-off events. [2025-03-04 15:26:35,243 INFO L125 PetriNetUnfolderBase]: For 3840/3922 co-relation queries the response was YES. [2025-03-04 15:26:35,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23501 conditions, 9769 events. 6372/9769 cut-off events. For 3840/3922 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 57155 event pairs, 1825 based on Foata normal form. 185/9140 useless extension candidates. Maximal degree in co-relation 16152. Up to 1747 conditions per place. [2025-03-04 15:26:35,273 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 128 selfloop transitions, 19 changer transitions 72/229 dead transitions. [2025-03-04 15:26:35,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 229 transitions, 1213 flow [2025-03-04 15:26:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:26:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:26:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 377 transitions. [2025-03-04 15:26:35,276 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2025-03-04 15:26:35,276 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 302 flow. Second operand 14 states and 377 transitions. [2025-03-04 15:26:35,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 229 transitions, 1213 flow [2025-03-04 15:26:35,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 229 transitions, 1136 flow, removed 11 selfloop flow, removed 7 redundant places. [2025-03-04 15:26:35,288 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 272 flow [2025-03-04 15:26:35,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=272, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2025-03-04 15:26:35,289 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 31 predicate places. [2025-03-04 15:26:35,289 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 272 flow [2025-03-04 15:26:35,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.157894736842106) internal successors, (307), 19 states have internal predecessors, (307), 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) [2025-03-04 15:26:35,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:35,290 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, 1, 1, 1, 1, 1] [2025-03-04 15:26:35,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 15:26:35,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:35,490 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:35,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1685420454, now seen corresponding path program 1 times [2025-03-04 15:26:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:35,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180396623] [2025-03-04 15:26:35,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:35,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:35,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 15:26:35,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:26:35,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:35,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:26:35,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:35,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180396623] [2025-03-04 15:26:35,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180396623] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:35,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858485340] [2025-03-04 15:26:35,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:35,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:35,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:35,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:26:35,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 15:26:35,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:26:35,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:35,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:35,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:26:35,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:26:35,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:26:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858485340] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:35,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:35,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:26:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981448074] [2025-03-04 15:26:35,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:35,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:26:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:35,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:26:35,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:26:35,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-03-04 15:26:35,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 272 flow. Second operand has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 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) [2025-03-04 15:26:35,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:35,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-03-04 15:26:35,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:36,727 INFO L124 PetriNetUnfolderBase]: 8642/12993 cut-off events. [2025-03-04 15:26:36,727 INFO L125 PetriNetUnfolderBase]: For 5863/6007 co-relation queries the response was YES. [2025-03-04 15:26:36,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31903 conditions, 12993 events. 8642/12993 cut-off events. For 5863/6007 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 72313 event pairs, 2599 based on Foata normal form. 318/12199 useless extension candidates. Maximal degree in co-relation 31802. Up to 4812 conditions per place. [2025-03-04 15:26:36,795 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 217 selfloop transitions, 13 changer transitions 0/240 dead transitions. [2025-03-04 15:26:36,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 240 transitions, 1278 flow [2025-03-04 15:26:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:26:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:26:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 355 transitions. [2025-03-04 15:26:36,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2025-03-04 15:26:36,797 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 272 flow. Second operand 10 states and 355 transitions. [2025-03-04 15:26:36,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 240 transitions, 1278 flow [2025-03-04 15:26:36,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 240 transitions, 1172 flow, removed 24 selfloop flow, removed 11 redundant places. [2025-03-04 15:26:36,813 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 324 flow [2025-03-04 15:26:36,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2025-03-04 15:26:36,813 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2025-03-04 15:26:36,813 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 324 flow [2025-03-04 15:26:36,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.583333333333332) internal successors, (223), 12 states have internal predecessors, (223), 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) [2025-03-04 15:26:36,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:36,814 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:36,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 15:26:37,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:37,015 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:37,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:37,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1613825410, now seen corresponding path program 1 times [2025-03-04 15:26:37,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:37,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291226701] [2025-03-04 15:26:37,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:37,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:37,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 15:26:37,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 15:26:37,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:37,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:26:37,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:37,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291226701] [2025-03-04 15:26:37,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291226701] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:37,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557037451] [2025-03-04 15:26:37,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:37,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:37,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:37,122 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:37,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:26:37,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 15:26:37,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 15:26:37,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:37,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:37,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:26:37,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:26:37,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:26:37,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557037451] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:37,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:37,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:26:37,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624013484] [2025-03-04 15:26:37,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:37,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:26:37,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:37,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:26:37,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:26:37,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-03-04 15:26:37,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 324 flow. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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) [2025-03-04 15:26:37,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:37,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-03-04 15:26:37,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:38,761 INFO L124 PetriNetUnfolderBase]: 17686/26066 cut-off events. [2025-03-04 15:26:38,761 INFO L125 PetriNetUnfolderBase]: For 15479/15799 co-relation queries the response was YES. [2025-03-04 15:26:38,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64215 conditions, 26066 events. 17686/26066 cut-off events. For 15479/15799 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 150382 event pairs, 4967 based on Foata normal form. 618/24272 useless extension candidates. Maximal degree in co-relation 64121. Up to 9428 conditions per place. [2025-03-04 15:26:38,868 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 263 selfloop transitions, 13 changer transitions 0/289 dead transitions. [2025-03-04 15:26:38,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 289 transitions, 1750 flow [2025-03-04 15:26:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:26:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:26:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 347 transitions. [2025-03-04 15:26:38,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5338461538461539 [2025-03-04 15:26:38,870 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 324 flow. Second operand 10 states and 347 transitions. [2025-03-04 15:26:38,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 289 transitions, 1750 flow [2025-03-04 15:26:38,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 289 transitions, 1675 flow, removed 27 selfloop flow, removed 2 redundant places. [2025-03-04 15:26:38,894 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 399 flow [2025-03-04 15:26:38,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=399, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2025-03-04 15:26:38,895 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 36 predicate places. [2025-03-04 15:26:38,895 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 399 flow [2025-03-04 15:26:38,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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) [2025-03-04 15:26:38,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:38,896 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:38,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 15:26:39,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:39,096 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:39,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash 493020847, now seen corresponding path program 2 times [2025-03-04 15:26:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340057712] [2025-03-04 15:26:39,097 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:26:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:39,104 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-03-04 15:26:39,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 15:26:39,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:26:39,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:26:39,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:39,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340057712] [2025-03-04 15:26:39,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340057712] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:39,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403628718] [2025-03-04 15:26:39,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:26:39,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:39,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:39,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:39,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 15:26:39,232 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-03-04 15:26:39,250 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 15:26:39,250 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:26:39,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:39,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:26:39,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:26:39,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:26:39,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403628718] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:39,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:39,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-03-04 15:26:39,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154526925] [2025-03-04 15:26:39,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:39,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:39,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:39,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:39,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:39,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-03-04 15:26:39,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-03-04 15:26:39,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:39,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-03-04 15:26:39,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:40,733 INFO L124 PetriNetUnfolderBase]: 17139/25160 cut-off events. [2025-03-04 15:26:40,733 INFO L125 PetriNetUnfolderBase]: For 19816/20099 co-relation queries the response was YES. [2025-03-04 15:26:40,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64802 conditions, 25160 events. 17139/25160 cut-off events. For 19816/20099 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 146786 event pairs, 4233 based on Foata normal form. 202/22893 useless extension candidates. Maximal degree in co-relation 64704. Up to 12098 conditions per place. [2025-03-04 15:26:40,819 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 93 selfloop transitions, 16 changer transitions 15/137 dead transitions. [2025-03-04 15:26:40,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 137 transitions, 845 flow [2025-03-04 15:26:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-03-04 15:26:40,820 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2025-03-04 15:26:40,820 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 399 flow. Second operand 6 states and 170 transitions. [2025-03-04 15:26:40,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 137 transitions, 845 flow [2025-03-04 15:26:40,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 137 transitions, 808 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-03-04 15:26:40,899 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 387 flow [2025-03-04 15:26:40,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2025-03-04 15:26:40,900 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 35 predicate places. [2025-03-04 15:26:40,900 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 387 flow [2025-03-04 15:26:40,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-03-04 15:26:40,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:40,900 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:40,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 15:26:41,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-04 15:26:41,101 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-03-04 15:26:41,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1222000831, now seen corresponding path program 2 times [2025-03-04 15:26:41,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:41,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883992176] [2025-03-04 15:26:41,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:26:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:41,107 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-04 15:26:41,111 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 15:26:41,111 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:26:41,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:26:41,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883992176] [2025-03-04 15:26:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883992176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679412885] [2025-03-04 15:26:41,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:26:41,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:41,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:41,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:41,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 15:26:41,224 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-04 15:26:41,246 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 15:26:41,246 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:26:41,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:41,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:26:41,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:26:41,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-04 15:26:41,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679412885] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:41,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:41,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-03-04 15:26:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799518496] [2025-03-04 15:26:41,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:41,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:41,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:41,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:41,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-03-04 15:26:41,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:41,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:41,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-03-04 15:26:41,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:43,020 INFO L124 PetriNetUnfolderBase]: 15571/23115 cut-off events. [2025-03-04 15:26:43,020 INFO L125 PetriNetUnfolderBase]: For 24376/24757 co-relation queries the response was YES. [2025-03-04 15:26:43,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59980 conditions, 23115 events. 15571/23115 cut-off events. For 24376/24757 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 133874 event pairs, 3259 based on Foata normal form. 435/21234 useless extension candidates. Maximal degree in co-relation 59880. Up to 12310 conditions per place. [2025-03-04 15:26:43,079 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 0 selfloop transitions, 0 changer transitions 132/132 dead transitions. [2025-03-04 15:26:43,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 132 transitions, 841 flow [2025-03-04 15:26:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2025-03-04 15:26:43,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4256410256410256 [2025-03-04 15:26:43,080 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 387 flow. Second operand 6 states and 166 transitions. [2025-03-04 15:26:43,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 132 transitions, 841 flow [2025-03-04 15:26:43,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 796 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-03-04 15:26:43,137 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2025-03-04 15:26:43,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2025-03-04 15:26:43,137 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2025-03-04 15:26:43,137 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2025-03-04 15:26:43,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:43,139 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2025-03-04 15:26:43,139 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2025-03-04 15:26:43,140 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2025-03-04 15:26:43,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 15:26:43,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-04 15:26:43,341 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:43,345 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:26:43,345 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:26:43,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:26:43 BasicIcfg [2025-03-04 15:26:43,349 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:26:43,349 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:26:43,349 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:26:43,349 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:26:43,350 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:27" (3/4) ... [2025-03-04 15:26:43,351 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:26:43,353 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 15:26:43,353 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 15:26:43,353 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-04 15:26:43,355 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2025-03-04 15:26:43,355 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-04 15:26:43,356 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-04 15:26:43,356 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 15:26:43,407 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:26:43,408 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:26:43,408 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:26:43,409 INFO L158 Benchmark]: Toolchain (without parser) took 16919.63ms. Allocated memory was 201.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 154.3MB in the beginning and 1.1GB in the end (delta: -986.6MB). Peak memory consumption was 690.7MB. Max. memory is 16.1GB. [2025-03-04 15:26:43,409 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:26:43,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.47ms. Allocated memory is still 201.3MB. Free memory was 153.9MB in the beginning and 142.2MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:26:43,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.18ms. Allocated memory is still 201.3MB. Free memory was 142.2MB in the beginning and 140.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:26:43,411 INFO L158 Benchmark]: Boogie Preprocessor took 28.05ms. Allocated memory is still 201.3MB. Free memory was 140.5MB in the beginning and 138.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:26:43,411 INFO L158 Benchmark]: IcfgBuilder took 469.20ms. Allocated memory is still 201.3MB. Free memory was 138.6MB in the beginning and 101.8MB in the end (delta: 36.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 15:26:43,412 INFO L158 Benchmark]: TraceAbstraction took 16148.11ms. Allocated memory was 201.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 101.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2025-03-04 15:26:43,412 INFO L158 Benchmark]: Witness Printer took 58.87ms. Allocated memory is still 1.9GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:26:43,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.47ms. Allocated memory is still 201.3MB. Free memory was 153.9MB in the beginning and 142.2MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.18ms. Allocated memory is still 201.3MB. Free memory was 142.2MB in the beginning and 140.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.05ms. Allocated memory is still 201.3MB. Free memory was 140.5MB in the beginning and 138.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 469.20ms. Allocated memory is still 201.3MB. Free memory was 138.6MB in the beginning and 101.8MB in the end (delta: 36.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16148.11ms. Allocated memory was 201.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 101.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 58.87ms. Allocated memory is still 1.9GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 111]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 96 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.0s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1374 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1324 mSDsluCounter, 620 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 580 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6028 IncrementalHoareTripleChecker+Invalid, 6069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 40 mSDtfsCounter, 6028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 540 SyntacticMatches, 11 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=399occurred in iteration=11, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 712 NumberOfCodeBlocks, 688 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 973 ConstructedInterpolants, 0 QuantifiedInterpolants, 2205 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1311 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 396/569 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 15:26:43,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE