./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/chl-chromosome-subst.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 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:41:15,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:41:15,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:41:15,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:41:15,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:41:15,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:41:15,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:41:15,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:41:15,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:41:15,845 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:41:15,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:41:15,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:41:15,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:41:15,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:41:15,849 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:41:15,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:41:15,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:41:15,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:41:15,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:41:15,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:41:15,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:41:15,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:41:15,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:41:15,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:41:15,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:41:15,856 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:41:15,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:41:15,857 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:41:15,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:41:15,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:41:15,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:41:15,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:41:15,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:41:15,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:41:15,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:41:15,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:41:15,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:41:15,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:41:15,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:41:15,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:41:15,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:41:15,860 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:41:15,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:41:15,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:41:15,861 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c [2024-11-12 20:41:16,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:41:16,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:41:16,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:41:16,188 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:41:16,189 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:41:16,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2024-11-12 20:41:17,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:41:17,934 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:41:17,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2024-11-12 20:41:17,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e48c973f6/811a754a98854728bf690c5aca895350/FLAG66c8405f3 [2024-11-12 20:41:18,283 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e48c973f6/811a754a98854728bf690c5aca895350 [2024-11-12 20:41:18,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:41:18,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:41:18,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:41:18,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:41:18,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:41:18,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39478c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18, skipping insertion in model container [2024-11-12 20:41:18,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,329 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:41:18,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:41:18,567 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:41:18,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:41:18,617 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:41:18,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18 WrapperNode [2024-11-12 20:41:18,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:41:18,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:41:18,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:41:18,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:41:18,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,678 INFO L138 Inliner]: procedures = 25, calls = 33, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 327 [2024-11-12 20:41:18,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:41:18,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:41:18,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:41:18,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:41:18,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,720 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-12 20:41:18,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:41:18,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:41:18,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:41:18,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:41:18,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (1/1) ... [2024-11-12 20:41:18,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:41:18,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:18,787 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) [2024-11-12 20:41:18,789 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 [2024-11-12 20:41:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:41:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:41:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:41:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:41:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:41:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:41:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:41:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:41:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:41:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:41:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:41:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:41:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:41:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:41:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:41:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:41:18,830 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:41:18,944 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:41:18,946 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:41:19,495 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:41:19,496 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:41:19,856 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:41:19,856 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-12 20:41:19,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:19 BoogieIcfgContainer [2024-11-12 20:41:19,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:41:19,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:41:19,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:41:19,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:41:19,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:41:18" (1/3) ... [2024-11-12 20:41:19,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dd0e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:19, skipping insertion in model container [2024-11-12 20:41:19,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:18" (2/3) ... [2024-11-12 20:41:19,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dd0e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:19, skipping insertion in model container [2024-11-12 20:41:19,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:19" (3/3) ... [2024-11-12 20:41:19,870 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2024-11-12 20:41:19,890 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:41:19,891 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-12 20:41:19,891 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:41:20,015 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:41:20,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 235 flow [2024-11-12 20:41:20,117 INFO L124 PetriNetUnfolderBase]: 12/104 cut-off events. [2024-11-12 20:41:20,118 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:41:20,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 12/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 389 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-11-12 20:41:20,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 235 flow [2024-11-12 20:41:20,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 219 flow [2024-11-12 20:41:20,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:41:20,156 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;@37894786, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:41:20,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-11-12 20:41:20,160 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:41:20,161 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:41:20,162 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:41:20,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:20,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:41:20,163 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:20,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1011434, now seen corresponding path program 1 times [2024-11-12 20:41:20,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:20,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200986377] [2024-11-12 20:41:20,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:20,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200986377] [2024-11-12 20:41:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200986377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:20,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832387800] [2024-11-12 20:41:20,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:20,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:20,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:20,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:20,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-12 20:41:20,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-11-12 20:41:20,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:20,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-12 20:41:20,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:21,697 INFO L124 PetriNetUnfolderBase]: 4133/8574 cut-off events. [2024-11-12 20:41:21,698 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-11-12 20:41:21,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14289 conditions, 8574 events. 4133/8574 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 75255 event pairs, 2732 based on Foata normal form. 3/6721 useless extension candidates. Maximal degree in co-relation 13590. Up to 5489 conditions per place. [2024-11-12 20:41:21,788 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 50 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2024-11-12 20:41:21,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 111 transitions, 357 flow [2024-11-12 20:41:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-11-12 20:41:21,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6588785046728972 [2024-11-12 20:41:21,807 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 219 flow. Second operand 4 states and 282 transitions. [2024-11-12 20:41:21,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 111 transitions, 357 flow [2024-11-12 20:41:21,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 348 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:41:21,826 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 298 flow [2024-11-12 20:41:21,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2024-11-12 20:41:21,833 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-11-12 20:41:21,834 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 298 flow [2024-11-12 20:41:21,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-11-12 20:41:21,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:21,834 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:41:21,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:41:21,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:21,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash 67874500, now seen corresponding path program 1 times [2024-11-12 20:41:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:21,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911411103] [2024-11-12 20:41:21,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:21,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:22,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911411103] [2024-11-12 20:41:22,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911411103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:22,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193004994] [2024-11-12 20:41:22,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:22,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:22,030 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) [2024-11-12 20:41:22,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:41:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:22,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:22,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:22,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:41:22,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193004994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:22,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:41:22,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:41:22,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711689798] [2024-11-12 20:41:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:22,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:41:22,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:22,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:41:22,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:41:22,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-12 20:41:22,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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) [2024-11-12 20:41:22,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:22,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-12 20:41:22,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:23,279 INFO L124 PetriNetUnfolderBase]: 4133/8571 cut-off events. [2024-11-12 20:41:23,279 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-12 20:41:23,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 8571 events. 4133/8571 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 75296 event pairs, 2732 based on Foata normal form. 3/6723 useless extension candidates. Maximal degree in co-relation 14162. Up to 5474 conditions per place. [2024-11-12 20:41:23,349 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 40 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-11-12 20:41:23,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 108 transitions, 400 flow [2024-11-12 20:41:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:41:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:41:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2024-11-12 20:41:23,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2024-11-12 20:41:23,354 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 298 flow. Second operand 6 states and 384 transitions. [2024-11-12 20:41:23,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 108 transitions, 400 flow [2024-11-12 20:41:23,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 108 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:41:23,361 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 320 flow [2024-11-12 20:41:23,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-11-12 20:41:23,365 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-11-12 20:41:23,366 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 320 flow [2024-11-12 20:41:23,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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) [2024-11-12 20:41:23,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:23,368 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:41:23,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 20:41:23,569 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 [2024-11-12 20:41:23,570 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:23,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2104110522, now seen corresponding path program 1 times [2024-11-12 20:41:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:23,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18743734] [2024-11-12 20:41:23,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:23,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:23,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:23,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18743734] [2024-11-12 20:41:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18743734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821655258] [2024-11-12 20:41:23,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:23,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:23,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:23,707 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) [2024-11-12 20:41:23,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:41:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:23,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:23,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:23,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821655258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:23,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:23,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:41:23,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846889386] [2024-11-12 20:41:23,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:23,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:41:23,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:23,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:41:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:41:23,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-12 20:41:23,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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) [2024-11-12 20:41:23,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:23,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-12 20:41:23,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:25,096 INFO L124 PetriNetUnfolderBase]: 4142/8607 cut-off events. [2024-11-12 20:41:25,097 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-12 20:41:25,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 8607 events. 4142/8607 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 75749 event pairs, 2732 based on Foata normal form. 9/6765 useless extension candidates. Maximal degree in co-relation 14164. Up to 5489 conditions per place. [2024-11-12 20:41:25,159 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 47 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-11-12 20:41:25,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 135 transitions, 662 flow [2024-11-12 20:41:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:41:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:41:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2024-11-12 20:41:25,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.591588785046729 [2024-11-12 20:41:25,164 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 320 flow. Second operand 10 states and 633 transitions. [2024-11-12 20:41:25,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 135 transitions, 662 flow [2024-11-12 20:41:25,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 135 transitions, 579 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-12 20:41:25,172 INFO L231 Difference]: Finished difference. Result has 110 places, 135 transitions, 535 flow [2024-11-12 20:41:25,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=535, PETRI_PLACES=110, PETRI_TRANSITIONS=135} [2024-11-12 20:41:25,174 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2024-11-12 20:41:25,175 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 135 transitions, 535 flow [2024-11-12 20:41:25,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.083333333333336) internal successors, (661), 12 states have internal predecessors, (661), 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) [2024-11-12 20:41:25,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:25,176 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:25,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:41:25,379 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 [2024-11-12 20:41:25,380 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:25,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:25,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2079071919, now seen corresponding path program 1 times [2024-11-12 20:41:25,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:25,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301354829] [2024-11-12 20:41:25,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:25,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:25,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:25,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301354829] [2024-11-12 20:41:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301354829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:25,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:25,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:25,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845918553] [2024-11-12 20:41:25,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:25,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:41:25,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:41:25,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:41:25,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-11-12 20:41:25,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 135 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-11-12 20:41:25,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:25,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-11-12 20:41:25,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:26,274 INFO L124 PetriNetUnfolderBase]: 4139/8604 cut-off events. [2024-11-12 20:41:26,274 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-12 20:41:26,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14386 conditions, 8604 events. 4139/8604 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 75405 event pairs, 2732 based on Foata normal form. 3/6757 useless extension candidates. Maximal degree in co-relation 14288. Up to 5503 conditions per place. [2024-11-12 20:41:26,357 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 66 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2024-11-12 20:41:26,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 132 transitions, 677 flow [2024-11-12 20:41:26,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:41:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:41:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2024-11-12 20:41:26,359 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2024-11-12 20:41:26,359 INFO L175 Difference]: Start difference. First operand has 110 places, 135 transitions, 535 flow. Second operand 3 states and 234 transitions. [2024-11-12 20:41:26,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 132 transitions, 677 flow [2024-11-12 20:41:26,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 132 transitions, 629 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-12 20:41:26,366 INFO L231 Difference]: Finished difference. Result has 109 places, 132 transitions, 497 flow [2024-11-12 20:41:26,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=497, PETRI_PLACES=109, PETRI_TRANSITIONS=132} [2024-11-12 20:41:26,368 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2024-11-12 20:41:26,368 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 132 transitions, 497 flow [2024-11-12 20:41:26,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-11-12 20:41:26,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:26,369 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:41:26,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:41:26,370 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:26,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1690845484, now seen corresponding path program 2 times [2024-11-12 20:41:26,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:26,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133520638] [2024-11-12 20:41:26,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133520638] [2024-11-12 20:41:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133520638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721936093] [2024-11-12 20:41:26,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:41:26,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:26,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:26,606 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) [2024-11-12 20:41:26,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:41:26,690 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:41:26,690 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:41:26,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:26,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:41:26,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:41:26,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721936093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:26,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:26,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-11-12 20:41:26,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176596545] [2024-11-12 20:41:26,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:26,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:41:26,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:41:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:41:26,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-12 20:41:26,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 132 transitions, 497 flow. Second operand has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 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) [2024-11-12 20:41:26,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:26,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-12 20:41:26,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:27,794 INFO L124 PetriNetUnfolderBase]: 4142/8607 cut-off events. [2024-11-12 20:41:27,794 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-12 20:41:27,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14377 conditions, 8607 events. 4142/8607 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 75388 event pairs, 2732 based on Foata normal form. 3/6761 useless extension candidates. Maximal degree in co-relation 14275. Up to 5477 conditions per place. [2024-11-12 20:41:27,888 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 35 selfloop transitions, 49 changer transitions 0/135 dead transitions. [2024-11-12 20:41:27,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 135 transitions, 672 flow [2024-11-12 20:41:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 20:41:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 20:41:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 789 transitions. [2024-11-12 20:41:27,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5672178289000719 [2024-11-12 20:41:27,891 INFO L175 Difference]: Start difference. First operand has 109 places, 132 transitions, 497 flow. Second operand 13 states and 789 transitions. [2024-11-12 20:41:27,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 135 transitions, 672 flow [2024-11-12 20:41:27,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 135 transitions, 614 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-12 20:41:27,896 INFO L231 Difference]: Finished difference. Result has 112 places, 135 transitions, 544 flow [2024-11-12 20:41:27,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=544, PETRI_PLACES=112, PETRI_TRANSITIONS=135} [2024-11-12 20:41:27,897 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-12 20:41:27,897 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 135 transitions, 544 flow [2024-11-12 20:41:27,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 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) [2024-11-12 20:41:27,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:27,898 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:27,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:41:28,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:28,103 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:28,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash 285639323, now seen corresponding path program 1 times [2024-11-12 20:41:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:28,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061638650] [2024-11-12 20:41:28,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:28,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:41:28,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:28,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061638650] [2024-11-12 20:41:28,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061638650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:28,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:28,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:28,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787861825] [2024-11-12 20:41:28,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:28,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:28,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:28,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:28,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-12 20:41:28,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 135 transitions, 544 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2024-11-12 20:41:28,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:28,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-12 20:41:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:29,523 INFO L124 PetriNetUnfolderBase]: 8073/14480 cut-off events. [2024-11-12 20:41:29,523 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-11-12 20:41:29,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25654 conditions, 14480 events. 8073/14480 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 120576 event pairs, 2641 based on Foata normal form. 364/12041 useless extension candidates. Maximal degree in co-relation 25409. Up to 5065 conditions per place. [2024-11-12 20:41:29,662 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 134 selfloop transitions, 5 changer transitions 0/184 dead transitions. [2024-11-12 20:41:29,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 184 transitions, 926 flow [2024-11-12 20:41:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-11-12 20:41:29,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7453271028037384 [2024-11-12 20:41:29,664 INFO L175 Difference]: Start difference. First operand has 112 places, 135 transitions, 544 flow. Second operand 4 states and 319 transitions. [2024-11-12 20:41:29,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 184 transitions, 926 flow [2024-11-12 20:41:29,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 184 transitions, 750 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-11-12 20:41:29,669 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 402 flow [2024-11-12 20:41:29,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2024-11-12 20:41:29,670 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-11-12 20:41:29,670 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 402 flow [2024-11-12 20:41:29,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2024-11-12 20:41:29,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:29,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:29,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:41:29,671 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:29,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 264885521, now seen corresponding path program 1 times [2024-11-12 20:41:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:29,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682170969] [2024-11-12 20:41:29,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:29,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:41:29,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682170969] [2024-11-12 20:41:29,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682170969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908182617] [2024-11-12 20:41:29,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:29,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:29,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:29,791 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) [2024-11-12 20:41:29,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:41:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:29,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:41:29,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:41:29,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:41:29,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908182617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:29,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:29,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:41:29,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796571843] [2024-11-12 20:41:29,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:29,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:41:29,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:29,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:41:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:41:30,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-12 20:41:30,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 402 flow. Second operand has 11 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 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) [2024-11-12 20:41:30,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:30,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-12 20:41:30,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:30,875 INFO L124 PetriNetUnfolderBase]: 5181/10987 cut-off events. [2024-11-12 20:41:30,875 INFO L125 PetriNetUnfolderBase]: For 1866/2132 co-relation queries the response was YES. [2024-11-12 20:41:30,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19627 conditions, 10987 events. 5181/10987 cut-off events. For 1866/2132 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 101638 event pairs, 3504 based on Foata normal form. 135/8932 useless extension candidates. Maximal degree in co-relation 9677. Up to 6893 conditions per place. [2024-11-12 20:41:30,979 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 43 selfloop transitions, 37 changer transitions 0/131 dead transitions. [2024-11-12 20:41:30,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 131 transitions, 540 flow [2024-11-12 20:41:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:41:30,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:41:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 444 transitions. [2024-11-12 20:41:30,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5927903871829105 [2024-11-12 20:41:30,983 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 402 flow. Second operand 7 states and 444 transitions. [2024-11-12 20:41:30,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 131 transitions, 540 flow [2024-11-12 20:41:31,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:41:31,016 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 454 flow [2024-11-12 20:41:31,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=454, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-11-12 20:41:31,018 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2024-11-12 20:41:31,018 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 454 flow [2024-11-12 20:41:31,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 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) [2024-11-12 20:41:31,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:31,019 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:31,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 20:41:31,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:31,225 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:31,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:31,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1069198639, now seen corresponding path program 2 times [2024-11-12 20:41:31,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:31,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298291092] [2024-11-12 20:41:31,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 20:41:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298291092] [2024-11-12 20:41:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298291092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714675102] [2024-11-12 20:41:31,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:41:31,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:31,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:31,484 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) [2024-11-12 20:41:31,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:41:31,597 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:41:31,598 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:41:31,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:41:31,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 20:41:31,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 20:41:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714675102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:31,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:31,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-12 20:41:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710473483] [2024-11-12 20:41:31,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:31,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:41:31,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:41:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-12 20:41:31,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-12 20:41:31,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 454 flow. Second operand has 23 states, 23 states have (on average 55.43478260869565) internal successors, (1275), 23 states have internal predecessors, (1275), 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) [2024-11-12 20:41:31,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:31,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-12 20:41:31,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:32,886 INFO L124 PetriNetUnfolderBase]: 5175/10981 cut-off events. [2024-11-12 20:41:32,887 INFO L125 PetriNetUnfolderBase]: For 1896/2162 co-relation queries the response was YES. [2024-11-12 20:41:32,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19645 conditions, 10981 events. 5175/10981 cut-off events. For 1896/2162 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 101699 event pairs, 3504 based on Foata normal form. 137/8935 useless extension candidates. Maximal degree in co-relation 19483. Up to 6885 conditions per place. [2024-11-12 20:41:32,947 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 41 selfloop transitions, 33 changer transitions 0/125 dead transitions. [2024-11-12 20:41:32,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 125 transitions, 572 flow [2024-11-12 20:41:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:41:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:41:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2024-11-12 20:41:32,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5709430756159728 [2024-11-12 20:41:32,950 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 454 flow. Second operand 11 states and 672 transitions. [2024-11-12 20:41:32,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 125 transitions, 572 flow [2024-11-12 20:41:32,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 125 transitions, 506 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 20:41:32,961 INFO L231 Difference]: Finished difference. Result has 115 places, 125 transitions, 424 flow [2024-11-12 20:41:32,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=115, PETRI_TRANSITIONS=125} [2024-11-12 20:41:32,962 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 15 predicate places. [2024-11-12 20:41:32,962 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 125 transitions, 424 flow [2024-11-12 20:41:32,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 55.43478260869565) internal successors, (1275), 23 states have internal predecessors, (1275), 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) [2024-11-12 20:41:32,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:32,963 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:32,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 20:41:33,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:33,164 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-12 20:41:33,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1535819921, now seen corresponding path program 3 times [2024-11-12 20:41:33,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686502534] [2024-11-12 20:41:33,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-12 20:41:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686502534] [2024-11-12 20:41:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686502534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319970070] [2024-11-12 20:41:34,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:41:34,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:34,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:34,656 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) [2024-11-12 20:41:34,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:41:34,839 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-12 20:41:34,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:41:34,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-12 20:41:34,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:34,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 20:41:34,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:41:34,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:41:34,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-12 20:41:35,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:41:35,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-12 20:41:35,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:41:35,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-12 20:41:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 20:41:35,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-12 20:41:35,292 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:41:35,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-12 20:41:35,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-12 20:41:35,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-12 20:41:35,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-12 20:41:35,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-12 20:41:35,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-12 20:41:35,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:41:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-12 20:41:35,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:35,520 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_228 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_228) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false