./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:41:26,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:41:26,685 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:41:26,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:41:26,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:41:26,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:41:26,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:41:26,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:41:26,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:41:26,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:41:26,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:41:26,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:41:26,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:41:26,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:41:26,710 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:41:26,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:41:26,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:41:26,710 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:41:26,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:41:26,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:41:26,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:41:26,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:41:26,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:41:26,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:41:26,715 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:41:26,715 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:41:26,715 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:41:26,715 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:41:26,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:41:26,715 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:41:26,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:41:26,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:41:26,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:41:26,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:41:26,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:26,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:41:26,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:41:26,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:41:26,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:41:26,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:41:26,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:41:26,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:41:26,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:41:26,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:41:26,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-10-24 23:41:26,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:41:26,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:41:26,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:41:26,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:41:26,970 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:41:26,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-10-24 23:41:28,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:41:28,464 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:41:28,464 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-10-24 23:41:28,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee26414/f55c1d138b7b4fb5a1af3d26f093ea19/FLAG456b3c151 [2024-10-24 23:41:28,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee26414/f55c1d138b7b4fb5a1af3d26f093ea19 [2024-10-24 23:41:28,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:41:28,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:41:28,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:28,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:41:28,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:41:28,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fd460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28, skipping insertion in model container [2024-10-24 23:41:28,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:41:28,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:28,701 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:41:28,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:41:28,749 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:41:28,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28 WrapperNode [2024-10-24 23:41:28,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:41:28,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:28,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:41:28,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:41:28,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,788 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 346 [2024-10-24 23:41:28,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:41:28,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:41:28,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:41:28,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:41:28,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,831 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-24 23:41:28,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:41:28,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:41:28,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:41:28,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:41:28,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (1/1) ... [2024-10-24 23:41:28,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:41:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:28,899 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) [2024-10-24 23:41:28,902 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 [2024-10-24 23:41:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:41:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:41:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:41:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:41:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:41:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:41:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:41:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:41:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:41:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:41:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:41:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:41:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:41:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:41:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:41:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:41:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:41:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:41:28,943 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:41:29,034 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:41:29,036 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:41:29,483 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:41:29,483 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:41:29,911 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:41:29,911 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 23:41:29,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:29 BoogieIcfgContainer [2024-10-24 23:41:29,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:41:29,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:41:29,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:41:29,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:41:29,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:41:28" (1/3) ... [2024-10-24 23:41:29,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230ec334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:29, skipping insertion in model container [2024-10-24 23:41:29,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:28" (2/3) ... [2024-10-24 23:41:29,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230ec334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:29, skipping insertion in model container [2024-10-24 23:41:29,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:29" (3/3) ... [2024-10-24 23:41:29,919 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-10-24 23:41:29,935 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:41:29,936 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-24 23:41:29,936 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:41:30,022 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:41:30,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 89 transitions, 199 flow [2024-10-24 23:41:30,089 INFO L124 PetriNetUnfolderBase]: 8/86 cut-off events. [2024-10-24 23:41:30,089 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:41:30,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 8/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2024-10-24 23:41:30,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 89 transitions, 199 flow [2024-10-24 23:41:30,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 84 transitions, 183 flow [2024-10-24 23:41:30,103 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:41:30,108 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;@4dd4e3b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:41:30,108 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-24 23:41:30,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:41:30,114 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:41:30,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:41:30,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:30,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:41:30,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:30,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1029222, now seen corresponding path program 1 times [2024-10-24 23:41:30,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:30,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841813870] [2024-10-24 23:41:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:30,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:30,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:30,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841813870] [2024-10-24 23:41:30,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841813870] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:30,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:30,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:30,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756856205] [2024-10-24 23:41:30,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:30,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:30,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:30,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-24 23:41:30,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-24 23:41:30,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:30,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-24 23:41:30,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:31,572 INFO L124 PetriNetUnfolderBase]: 6026/10035 cut-off events. [2024-10-24 23:41:31,572 INFO L125 PetriNetUnfolderBase]: For 367/367 co-relation queries the response was YES. [2024-10-24 23:41:31,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18661 conditions, 10035 events. 6026/10035 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72899 event pairs, 5468 based on Foata normal form. 486/7021 useless extension candidates. Maximal degree in co-relation 17888. Up to 8260 conditions per place. [2024-10-24 23:41:31,654 INFO L140 encePairwiseOnDemand]: 64/89 looper letters, 52 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-10-24 23:41:31,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 307 flow [2024-10-24 23:41:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:41:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:41:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-10-24 23:41:31,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49719101123595505 [2024-10-24 23:41:31,672 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 183 flow. Second operand 4 states and 177 transitions. [2024-10-24 23:41:31,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 307 flow [2024-10-24 23:41:31,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 298 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:41:31,689 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 244 flow [2024-10-24 23:41:31,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-10-24 23:41:31,696 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -6 predicate places. [2024-10-24 23:41:31,696 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 244 flow [2024-10-24 23:41:31,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-24 23:41:31,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:31,697 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:41:31,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:41:31,697 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:31,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash 597844387, now seen corresponding path program 1 times [2024-10-24 23:41:31,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:31,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051203496] [2024-10-24 23:41:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:31,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:31,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:31,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051203496] [2024-10-24 23:41:31,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051203496] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:31,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713534094] [2024-10-24 23:41:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:31,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:31,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:31,848 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) [2024-10-24 23:41:31,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:41:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:31,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:31,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:31,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713534094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:31,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:31,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:41:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752021412] [2024-10-24 23:41:31,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:31,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:41:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:31,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:41:31,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:41:31,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-24 23:41:31,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-10-24 23:41:31,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:31,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-24 23:41:31,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:32,825 INFO L124 PetriNetUnfolderBase]: 6026/10032 cut-off events. [2024-10-24 23:41:32,826 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-24 23:41:32,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18565 conditions, 10032 events. 6026/10032 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72956 event pairs, 5468 based on Foata normal form. 3/6540 useless extension candidates. Maximal degree in co-relation 18492. Up to 8245 conditions per place. [2024-10-24 23:41:32,891 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 42 selfloop transitions, 17 changer transitions 0/81 dead transitions. [2024-10-24 23:41:32,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 350 flow [2024-10-24 23:41:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:41:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:41:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-10-24 23:41:32,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3970037453183521 [2024-10-24 23:41:32,894 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 244 flow. Second operand 6 states and 212 transitions. [2024-10-24 23:41:32,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 350 flow [2024-10-24 23:41:32,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:41:32,896 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 266 flow [2024-10-24 23:41:32,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-10-24 23:41:32,897 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-10-24 23:41:32,897 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 266 flow [2024-10-24 23:41:32,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2024-10-24 23:41:32,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:32,897 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:41:32,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:41:33,098 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 [2024-10-24 23:41:33,100 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:33,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1353307884, now seen corresponding path program 1 times [2024-10-24 23:41:33,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:33,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521634764] [2024-10-24 23:41:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:33,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:33,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:33,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521634764] [2024-10-24 23:41:33,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521634764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:33,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280504012] [2024-10-24 23:41:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:33,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:33,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:33,168 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) [2024-10-24 23:41:33,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:41:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:33,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:41:33,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:33,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:33,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280504012] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:33,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:33,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:41:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649355853] [2024-10-24 23:41:33,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:33,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:41:33,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:41:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:41:33,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-24 23:41:33,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 266 flow. Second operand has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 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) [2024-10-24 23:41:33,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:33,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-24 23:41:33,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:34,178 INFO L124 PetriNetUnfolderBase]: 6035/10068 cut-off events. [2024-10-24 23:41:34,179 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-10-24 23:41:34,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18706 conditions, 10068 events. 6035/10068 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 73360 event pairs, 5468 based on Foata normal form. 9/6582 useless extension candidates. Maximal degree in co-relation 18494. Up to 8260 conditions per place. [2024-10-24 23:41:34,244 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 49 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2024-10-24 23:41:34,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 108 transitions, 612 flow [2024-10-24 23:41:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:41:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:41:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 345 transitions. [2024-10-24 23:41:34,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38764044943820225 [2024-10-24 23:41:34,247 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 266 flow. Second operand 10 states and 345 transitions. [2024-10-24 23:41:34,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 108 transitions, 612 flow [2024-10-24 23:41:34,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 108 transitions, 529 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-24 23:41:34,250 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 481 flow [2024-10-24 23:41:34,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=481, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-10-24 23:41:34,251 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-10-24 23:41:34,251 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 481 flow [2024-10-24 23:41:34,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 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) [2024-10-24 23:41:34,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:34,252 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:34,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:41:34,452 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 [2024-10-24 23:41:34,453 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:34,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2028927118, now seen corresponding path program 1 times [2024-10-24 23:41:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789218628] [2024-10-24 23:41:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:34,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789218628] [2024-10-24 23:41:34,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789218628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:34,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:34,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:34,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230584005] [2024-10-24 23:41:34,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:34,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:34,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:34,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:34,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:34,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-24 23:41:34,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-10-24 23:41:34,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:34,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-24 23:41:34,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:35,623 INFO L124 PetriNetUnfolderBase]: 6263/10525 cut-off events. [2024-10-24 23:41:35,623 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-10-24 23:41:35,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 10525 events. 6263/10525 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 76615 event pairs, 5675 based on Foata normal form. 154/7214 useless extension candidates. Maximal degree in co-relation 19497. Up to 8286 conditions per place. [2024-10-24 23:41:35,692 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 120 selfloop transitions, 10 changer transitions 1/156 dead transitions. [2024-10-24 23:41:35,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 995 flow [2024-10-24 23:41:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:41:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:41:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-10-24 23:41:35,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5415730337078651 [2024-10-24 23:41:35,694 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 481 flow. Second operand 5 states and 241 transitions. [2024-10-24 23:41:35,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 995 flow [2024-10-24 23:41:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 156 transitions, 935 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-24 23:41:35,700 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 548 flow [2024-10-24 23:41:35,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-10-24 23:41:35,702 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2024-10-24 23:41:35,702 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 548 flow [2024-10-24 23:41:35,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-10-24 23:41:35,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:35,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:35,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:41:35,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:35,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1595410801, now seen corresponding path program 1 times [2024-10-24 23:41:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:35,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989066790] [2024-10-24 23:41:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:35,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:35,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989066790] [2024-10-24 23:41:35,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989066790] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066918285] [2024-10-24 23:41:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:35,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:35,900 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) [2024-10-24 23:41:35,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:41:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:35,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:41:35,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:36,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:36,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066918285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:36,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:36,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-24 23:41:36,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893833132] [2024-10-24 23:41:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:36,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:36,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:36,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:41:36,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-24 23:41:36,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-10-24 23:41:36,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:36,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-24 23:41:36,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:36,577 INFO L124 PetriNetUnfolderBase]: 4698/8093 cut-off events. [2024-10-24 23:41:36,577 INFO L125 PetriNetUnfolderBase]: For 825/825 co-relation queries the response was YES. [2024-10-24 23:41:36,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15626 conditions, 8093 events. 4698/8093 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57286 event pairs, 4210 based on Foata normal form. 0/5755 useless extension candidates. Maximal degree in co-relation 15470. Up to 6524 conditions per place. [2024-10-24 23:41:36,629 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 86 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2024-10-24 23:41:36,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 710 flow [2024-10-24 23:41:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-10-24 23:41:36,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5243445692883895 [2024-10-24 23:41:36,630 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 548 flow. Second operand 3 states and 140 transitions. [2024-10-24 23:41:36,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 710 flow [2024-10-24 23:41:36,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 112 transitions, 706 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:36,634 INFO L231 Difference]: Finished difference. Result has 91 places, 112 transitions, 534 flow [2024-10-24 23:41:36,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=91, PETRI_TRANSITIONS=112} [2024-10-24 23:41:36,635 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2024-10-24 23:41:36,635 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 112 transitions, 534 flow [2024-10-24 23:41:36,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-10-24 23:41:36,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:36,635 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:36,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:41:36,836 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 [2024-10-24 23:41:36,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:36,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:36,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1529118875, now seen corresponding path program 1 times [2024-10-24 23:41:36,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:36,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354414516] [2024-10-24 23:41:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:36,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:36,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354414516] [2024-10-24 23:41:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354414516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:36,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:36,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418575714] [2024-10-24 23:41:36,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:36,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:36,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-24 23:41:36,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-10-24 23:41:36,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:36,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-24 23:41:36,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:37,370 INFO L124 PetriNetUnfolderBase]: 4250/6981 cut-off events. [2024-10-24 23:41:37,370 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-10-24 23:41:37,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14189 conditions, 6981 events. 4250/6981 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 44499 event pairs, 1558 based on Foata normal form. 105/5122 useless extension candidates. Maximal degree in co-relation 14173. Up to 4941 conditions per place. [2024-10-24 23:41:37,399 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 103 selfloop transitions, 2 changer transitions 1/131 dead transitions. [2024-10-24 23:41:37,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 131 transitions, 793 flow [2024-10-24 23:41:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-10-24 23:41:37,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5917602996254682 [2024-10-24 23:41:37,400 INFO L175 Difference]: Start difference. First operand has 91 places, 112 transitions, 534 flow. Second operand 3 states and 158 transitions. [2024-10-24 23:41:37,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 131 transitions, 793 flow [2024-10-24 23:41:37,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 131 transitions, 792 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:37,404 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 538 flow [2024-10-24 23:41:37,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2024-10-24 23:41:37,405 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2024-10-24 23:41:37,405 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 538 flow [2024-10-24 23:41:37,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-10-24 23:41:37,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:37,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:37,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:41:37,405 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:37,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:37,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2081871629, now seen corresponding path program 1 times [2024-10-24 23:41:37,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:37,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904289687] [2024-10-24 23:41:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:37,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:37,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:37,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904289687] [2024-10-24 23:41:37,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904289687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:37,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:37,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:41:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046059904] [2024-10-24 23:41:37,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:37,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:37,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:37,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-24 23:41:37,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2024-10-24 23:41:37,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:37,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-24 23:41:37,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:38,010 INFO L124 PetriNetUnfolderBase]: 4766/8152 cut-off events. [2024-10-24 23:41:38,010 INFO L125 PetriNetUnfolderBase]: For 1495/1525 co-relation queries the response was YES. [2024-10-24 23:41:38,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17042 conditions, 8152 events. 4766/8152 cut-off events. For 1495/1525 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 54932 event pairs, 2202 based on Foata normal form. 150/6222 useless extension candidates. Maximal degree in co-relation 17024. Up to 3805 conditions per place. [2024-10-24 23:41:38,038 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 106 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-10-24 23:41:38,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 810 flow [2024-10-24 23:41:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-10-24 23:41:38,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.599250936329588 [2024-10-24 23:41:38,040 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 538 flow. Second operand 3 states and 160 transitions. [2024-10-24 23:41:38,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 810 flow [2024-10-24 23:41:38,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 133 transitions, 808 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:38,044 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 550 flow [2024-10-24 23:41:38,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2024-10-24 23:41:38,045 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2024-10-24 23:41:38,045 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 550 flow [2024-10-24 23:41:38,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2024-10-24 23:41:38,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:38,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:38,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:41:38,046 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:38,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:38,046 INFO L85 PathProgramCache]: Analyzing trace with hash -974348692, now seen corresponding path program 1 times [2024-10-24 23:41:38,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:38,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969029756] [2024-10-24 23:41:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:38,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969029756] [2024-10-24 23:41:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969029756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:38,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836638754] [2024-10-24 23:41:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:38,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:41:38,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-24 23:41:38,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2024-10-24 23:41:38,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:38,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-24 23:41:38,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:38,478 INFO L124 PetriNetUnfolderBase]: 3369/6219 cut-off events. [2024-10-24 23:41:38,479 INFO L125 PetriNetUnfolderBase]: For 1085/1088 co-relation queries the response was YES. [2024-10-24 23:41:38,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12986 conditions, 6219 events. 3369/6219 cut-off events. For 1085/1088 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 43567 event pairs, 1984 based on Foata normal form. 15/4739 useless extension candidates. Maximal degree in co-relation 12966. Up to 4731 conditions per place. [2024-10-24 23:41:38,504 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 95 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-10-24 23:41:38,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 773 flow [2024-10-24 23:41:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:38,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:38,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-10-24 23:41:38,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5543071161048689 [2024-10-24 23:41:38,506 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 550 flow. Second operand 3 states and 148 transitions. [2024-10-24 23:41:38,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 773 flow [2024-10-24 23:41:38,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 771 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:38,510 INFO L231 Difference]: Finished difference. Result has 97 places, 115 transitions, 571 flow [2024-10-24 23:41:38,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=97, PETRI_TRANSITIONS=115} [2024-10-24 23:41:38,510 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2024-10-24 23:41:38,511 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 115 transitions, 571 flow [2024-10-24 23:41:38,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2024-10-24 23:41:38,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:38,511 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:41:38,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:41:38,511 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:38,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1090455241, now seen corresponding path program 2 times [2024-10-24 23:41:38,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888786723] [2024-10-24 23:41:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:38,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888786723] [2024-10-24 23:41:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888786723] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163405936] [2024-10-24 23:41:38,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:41:38,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:38,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:38,610 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) [2024-10-24 23:41:38,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:41:38,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:41:38,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:41:38,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:41:38,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:41:38,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:41:38,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163405936] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:38,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:41:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929142469] [2024-10-24 23:41:38,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:38,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:41:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:38,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:41:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:41:38,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-24 23:41:38,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 115 transitions, 571 flow. Second operand has 14 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 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) [2024-10-24 23:41:38,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:38,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-24 23:41:38,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:39,626 INFO L124 PetriNetUnfolderBase]: 3374/6249 cut-off events. [2024-10-24 23:41:39,627 INFO L125 PetriNetUnfolderBase]: For 2005/2005 co-relation queries the response was YES. [2024-10-24 23:41:39,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13510 conditions, 6249 events. 3374/6249 cut-off events. For 2005/2005 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 44090 event pairs, 2811 based on Foata normal form. 6/4754 useless extension candidates. Maximal degree in co-relation 13488. Up to 4936 conditions per place. [2024-10-24 23:41:39,664 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 46 selfloop transitions, 56 changer transitions 0/124 dead transitions. [2024-10-24 23:41:39,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 836 flow [2024-10-24 23:41:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:41:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:41:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 695 transitions. [2024-10-24 23:41:39,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.325374531835206 [2024-10-24 23:41:39,668 INFO L175 Difference]: Start difference. First operand has 97 places, 115 transitions, 571 flow. Second operand 24 states and 695 transitions. [2024-10-24 23:41:39,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 836 flow [2024-10-24 23:41:39,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 827 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:39,674 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 760 flow [2024-10-24 23:41:39,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=760, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-10-24 23:41:39,675 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 34 predicate places. [2024-10-24 23:41:39,675 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 760 flow [2024-10-24 23:41:39,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.142857142857142) internal successors, (366), 14 states have internal predecessors, (366), 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) [2024-10-24 23:41:39,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:39,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:39,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:41:39,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:39,877 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:39,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:39,877 INFO L85 PathProgramCache]: Analyzing trace with hash 682300369, now seen corresponding path program 1 times [2024-10-24 23:41:39,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:39,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320914319] [2024-10-24 23:41:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:39,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:40,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:40,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320914319] [2024-10-24 23:41:40,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320914319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:40,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:41:40,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:41:40,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602814239] [2024-10-24 23:41:40,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:40,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:41:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:41:40,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:41:40,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-24 23:41:40,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-10-24 23:41:40,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:40,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-24 23:41:40,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:40,751 INFO L124 PetriNetUnfolderBase]: 3568/6658 cut-off events. [2024-10-24 23:41:40,751 INFO L125 PetriNetUnfolderBase]: For 1542/1544 co-relation queries the response was YES. [2024-10-24 23:41:40,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 6658 events. 3568/6658 cut-off events. For 1542/1544 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46561 event pairs, 2996 based on Foata normal form. 40/5199 useless extension candidates. Maximal degree in co-relation 14156. Up to 4989 conditions per place. [2024-10-24 23:41:40,796 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 102 selfloop transitions, 11 changer transitions 21/158 dead transitions. [2024-10-24 23:41:40,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 158 transitions, 1243 flow [2024-10-24 23:41:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:41:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:41:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-10-24 23:41:40,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5101123595505618 [2024-10-24 23:41:40,798 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 760 flow. Second operand 5 states and 227 transitions. [2024-10-24 23:41:40,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 158 transitions, 1243 flow [2024-10-24 23:41:40,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 158 transitions, 1088 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-10-24 23:41:40,805 INFO L231 Difference]: Finished difference. Result has 116 places, 126 transitions, 695 flow [2024-10-24 23:41:40,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=116, PETRI_TRANSITIONS=126} [2024-10-24 23:41:40,806 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 30 predicate places. [2024-10-24 23:41:40,806 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 126 transitions, 695 flow [2024-10-24 23:41:40,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-10-24 23:41:40,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:40,806 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:41:40,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:41:40,807 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:40,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:40,807 INFO L85 PathProgramCache]: Analyzing trace with hash -309320881, now seen corresponding path program 1 times [2024-10-24 23:41:40,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:40,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103973479] [2024-10-24 23:41:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:40,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:40,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:40,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103973479] [2024-10-24 23:41:40,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103973479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:40,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353319081] [2024-10-24 23:41:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:40,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:40,989 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) [2024-10-24 23:41:40,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:41:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:41,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:41:41,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:41,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:41,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353319081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:41,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:41,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:41:41,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661144264] [2024-10-24 23:41:41,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:41,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:41:41,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:41:41,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:41:41,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 89 [2024-10-24 23:41:41,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 126 transitions, 695 flow. Second operand has 28 states, 28 states have (on average 26.071428571428573) internal successors, (730), 28 states have internal predecessors, (730), 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) [2024-10-24 23:41:41,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:41,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 89 [2024-10-24 23:41:41,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:42,461 INFO L124 PetriNetUnfolderBase]: 3616/6845 cut-off events. [2024-10-24 23:41:42,461 INFO L125 PetriNetUnfolderBase]: For 2753/2753 co-relation queries the response was YES. [2024-10-24 23:41:42,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15530 conditions, 6845 events. 3616/6845 cut-off events. For 2753/2753 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 48834 event pairs, 2996 based on Foata normal form. 42/5360 useless extension candidates. Maximal degree in co-relation 15505. Up to 5320 conditions per place. [2024-10-24 23:41:42,486 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 49 selfloop transitions, 125 changer transitions 0/196 dead transitions. [2024-10-24 23:41:42,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 196 transitions, 1610 flow [2024-10-24 23:41:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:41:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:41:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 818 transitions. [2024-10-24 23:41:42,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35350043215211757 [2024-10-24 23:41:42,489 INFO L175 Difference]: Start difference. First operand has 116 places, 126 transitions, 695 flow. Second operand 26 states and 818 transitions. [2024-10-24 23:41:42,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 196 transitions, 1610 flow [2024-10-24 23:41:42,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 196 transitions, 1593 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:42,497 INFO L231 Difference]: Finished difference. Result has 147 places, 196 transitions, 1579 flow [2024-10-24 23:41:42,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1579, PETRI_PLACES=147, PETRI_TRANSITIONS=196} [2024-10-24 23:41:42,498 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 61 predicate places. [2024-10-24 23:41:42,498 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 196 transitions, 1579 flow [2024-10-24 23:41:42,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 26.071428571428573) internal successors, (730), 28 states have internal predecessors, (730), 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) [2024-10-24 23:41:42,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:42,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:42,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 23:41:42,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 23:41:42,703 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:42,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash -843405047, now seen corresponding path program 1 times [2024-10-24 23:41:42,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:42,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273423320] [2024-10-24 23:41:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:42,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:42,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273423320] [2024-10-24 23:41:42,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273423320] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432100028] [2024-10-24 23:41:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:42,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:42,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:42,835 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) [2024-10-24 23:41:42,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:41:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:42,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:41:42,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:42,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:41:42,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432100028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:41:42,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:41:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-24 23:41:42,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108351113] [2024-10-24 23:41:42,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:42,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:41:42,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:42,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:41:42,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:41:42,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-24 23:41:42,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 196 transitions, 1579 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-24 23:41:42,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:42,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-24 23:41:42,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:43,391 INFO L124 PetriNetUnfolderBase]: 2822/5456 cut-off events. [2024-10-24 23:41:43,391 INFO L125 PetriNetUnfolderBase]: For 2695/2695 co-relation queries the response was YES. [2024-10-24 23:41:43,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12697 conditions, 5456 events. 2822/5456 cut-off events. For 2695/2695 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37645 event pairs, 2299 based on Foata normal form. 0/4520 useless extension candidates. Maximal degree in co-relation 12664. Up to 4363 conditions per place. [2024-10-24 23:41:43,422 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 169 selfloop transitions, 1 changer transitions 0/194 dead transitions. [2024-10-24 23:41:43,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 194 transitions, 1911 flow [2024-10-24 23:41:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:41:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:41:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-10-24 23:41:43,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5131086142322098 [2024-10-24 23:41:43,426 INFO L175 Difference]: Start difference. First operand has 147 places, 196 transitions, 1579 flow. Second operand 3 states and 137 transitions. [2024-10-24 23:41:43,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 194 transitions, 1911 flow [2024-10-24 23:41:43,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 194 transitions, 1521 flow, removed 92 selfloop flow, removed 13 redundant places. [2024-10-24 23:41:43,437 INFO L231 Difference]: Finished difference. Result has 134 places, 194 transitions, 1183 flow [2024-10-24 23:41:43,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=134, PETRI_TRANSITIONS=194} [2024-10-24 23:41:43,438 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 48 predicate places. [2024-10-24 23:41:43,438 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 194 transitions, 1183 flow [2024-10-24 23:41:43,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-24 23:41:43,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:43,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:43,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:41:43,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:43,640 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:43,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash -843405050, now seen corresponding path program 1 times [2024-10-24 23:41:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:43,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526077240] [2024-10-24 23:41:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:44,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:44,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526077240] [2024-10-24 23:41:44,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526077240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:44,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257823250] [2024-10-24 23:41:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:44,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:44,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:44,205 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:44,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:41:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:44,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 23:41:44,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:44,333 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 [2024-10-24 23:41:44,365 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 23 treesize of output 1 [2024-10-24 23:41:44,416 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:41:44,416 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 [2024-10-24 23:41:44,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-24 23:41:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:44,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:41:44,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257823250] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:44,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 23:41:44,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 19 [2024-10-24 23:41:44,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622570684] [2024-10-24 23:41:44,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:41:44,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:41:44,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:44,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:41:44,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:41:44,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 89 [2024-10-24 23:41:44,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 194 transitions, 1183 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-10-24 23:41:44,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:44,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 89 [2024-10-24 23:41:44,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:45,220 INFO L124 PetriNetUnfolderBase]: 3196/5835 cut-off events. [2024-10-24 23:41:45,220 INFO L125 PetriNetUnfolderBase]: For 1741/1741 co-relation queries the response was YES. [2024-10-24 23:41:45,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13252 conditions, 5835 events. 3196/5835 cut-off events. For 1741/1741 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 38171 event pairs, 1193 based on Foata normal form. 0/4917 useless extension candidates. Maximal degree in co-relation 13221. Up to 2852 conditions per place. [2024-10-24 23:41:45,255 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 188 selfloop transitions, 23 changer transitions 0/234 dead transitions. [2024-10-24 23:41:45,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 234 transitions, 1718 flow [2024-10-24 23:41:45,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:41:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:41:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-10-24 23:41:45,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5325842696629214 [2024-10-24 23:41:45,257 INFO L175 Difference]: Start difference. First operand has 134 places, 194 transitions, 1183 flow. Second operand 5 states and 237 transitions. [2024-10-24 23:41:45,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 234 transitions, 1718 flow [2024-10-24 23:41:45,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 234 transitions, 1717 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:41:45,265 INFO L231 Difference]: Finished difference. Result has 139 places, 198 transitions, 1280 flow [2024-10-24 23:41:45,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=139, PETRI_TRANSITIONS=198} [2024-10-24 23:41:45,266 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 53 predicate places. [2024-10-24 23:41:45,266 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 198 transitions, 1280 flow [2024-10-24 23:41:45,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-10-24 23:41:45,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:41:45,267 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:41:45,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:41:45,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:45,468 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:41:45,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:41:45,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1929600171, now seen corresponding path program 1 times [2024-10-24 23:41:45,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:41:45,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875808095] [2024-10-24 23:41:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:41:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:41:45,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:41:45,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875808095] [2024-10-24 23:41:45,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875808095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:41:45,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460453427] [2024-10-24 23:41:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:41:45,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:41:45,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:41:45,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:41:45,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:41:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:41:45,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 23:41:45,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:41:45,891 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 [2024-10-24 23:41:45,918 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 23 treesize of output 1 [2024-10-24 23:41:46,020 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:41:46,020 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 [2024-10-24 23:41:46,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-24 23:41:46,202 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-24 23:41:46,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-24 23:41:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:46,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:41:46,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:41:46,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-24 23:41:46,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:41:46,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-10-24 23:41:46,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-10-24 23:41:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:41:46,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460453427] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:41:46,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:41:46,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-10-24 23:41:46,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829877668] [2024-10-24 23:41:46,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:41:46,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:41:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:41:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:41:46,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=364, Unknown=4, NotChecked=0, Total=420 [2024-10-24 23:41:46,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 89 [2024-10-24 23:41:46,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 198 transitions, 1280 flow. Second operand has 21 states, 21 states have (on average 19.571428571428573) internal successors, (411), 21 states have internal predecessors, (411), 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) [2024-10-24 23:41:46,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:41:46,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 89 [2024-10-24 23:41:46,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:41:51,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:41:51,908 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_204 (Array Int Int)) (~q1_front~0 Int)) (or (< ~q1_front~0 0) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_204) c_~q1~0.base) (+ c_~q1~0.offset (* ~q1_front~0 4))) 2147483649) (< c_~n1~0 (+ ~q1_front~0 1)))) (forall ((~q1_front~0 Int)) (or (< (select (select |c_#memory_int#1| c_~q1~0.base) (+ c_~q1~0.offset (* ~q1_front~0 4))) 2147483649) (< ~q1_front~0 0) (< c_~n1~0 (+ ~q1_front~0 1))))) is different from false [2024-10-24 23:41:56,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-24 23:42:00,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-24 23:42:03,475 INFO L124 PetriNetUnfolderBase]: 13880/24486 cut-off events. [2024-10-24 23:42:03,475 INFO L125 PetriNetUnfolderBase]: For 14868/14868 co-relation queries the response was YES. [2024-10-24 23:42:03,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55980 conditions, 24486 events. 13880/24486 cut-off events. For 14868/14868 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 194931 event pairs, 5053 based on Foata normal form. 815/20389 useless extension candidates. Maximal degree in co-relation 55946. Up to 3943 conditions per place. [2024-10-24 23:42:03,700 INFO L140 encePairwiseOnDemand]: 72/89 looper letters, 344 selfloop transitions, 292 changer transitions 24/674 dead transitions. [2024-10-24 23:42:03,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 674 transitions, 5165 flow [2024-10-24 23:42:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-24 23:42:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-10-24 23:42:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 970 transitions. [2024-10-24 23:42:03,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30274656679151063 [2024-10-24 23:42:03,704 INFO L175 Difference]: Start difference. First operand has 139 places, 198 transitions, 1280 flow. Second operand 36 states and 970 transitions. [2024-10-24 23:42:03,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 674 transitions, 5165 flow [2024-10-24 23:42:03,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 674 transitions, 5152 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 23:42:03,725 INFO L231 Difference]: Finished difference. Result has 188 places, 388 transitions, 3618 flow [2024-10-24 23:42:03,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3618, PETRI_PLACES=188, PETRI_TRANSITIONS=388} [2024-10-24 23:42:03,726 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 102 predicate places. [2024-10-24 23:42:03,726 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 388 transitions, 3618 flow [2024-10-24 23:42:03,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.571428571428573) internal successors, (411), 21 states have internal predecessors, (411), 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) [2024-10-24 23:42:03,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:03,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:03,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 23:42:03,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 23:42:03,927 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:03,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash 52941874, now seen corresponding path program 1 times [2024-10-24 23:42:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:03,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070243107] [2024-10-24 23:42:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070243107] [2024-10-24 23:42:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070243107] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563022202] [2024-10-24 23:42:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:04,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:04,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:04,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:04,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:42:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:04,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 23:42:04,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:04,395 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 [2024-10-24 23:42:04,416 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 23 treesize of output 1 [2024-10-24 23:42:04,465 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:42:04,465 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 [2024-10-24 23:42:04,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-24 23:42:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:04,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:04,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563022202] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:04,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 23:42:04,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 19 [2024-10-24 23:42:04,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210674731] [2024-10-24 23:42:04,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:04,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:42:04,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:04,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:42:04,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:42:04,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 89 [2024-10-24 23:42:04,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 388 transitions, 3618 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-10-24 23:42:04,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:04,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 89 [2024-10-24 23:42:04,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:06,361 INFO L124 PetriNetUnfolderBase]: 8616/15711 cut-off events. [2024-10-24 23:42:06,361 INFO L125 PetriNetUnfolderBase]: For 16178/16182 co-relation queries the response was YES. [2024-10-24 23:42:06,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42310 conditions, 15711 events. 8616/15711 cut-off events. For 16178/16182 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 120819 event pairs, 3051 based on Foata normal form. 44/13662 useless extension candidates. Maximal degree in co-relation 42260. Up to 8320 conditions per place. [2024-10-24 23:42:06,555 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 369 selfloop transitions, 34 changer transitions 0/428 dead transitions. [2024-10-24 23:42:06,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 428 transitions, 4552 flow [2024-10-24 23:42:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:42:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:42:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-10-24 23:42:06,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370786516853933 [2024-10-24 23:42:06,556 INFO L175 Difference]: Start difference. First operand has 188 places, 388 transitions, 3618 flow. Second operand 5 states and 239 transitions. [2024-10-24 23:42:06,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 428 transitions, 4552 flow [2024-10-24 23:42:06,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 428 transitions, 4405 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-10-24 23:42:06,617 INFO L231 Difference]: Finished difference. Result has 186 places, 388 transitions, 3594 flow [2024-10-24 23:42:06,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=3463, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3594, PETRI_PLACES=186, PETRI_TRANSITIONS=388} [2024-10-24 23:42:06,618 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 100 predicate places. [2024-10-24 23:42:06,618 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 388 transitions, 3594 flow [2024-10-24 23:42:06,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-10-24 23:42:06,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:06,618 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:06,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 23:42:06,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 23:42:06,823 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:06,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1998090482, now seen corresponding path program 1 times [2024-10-24 23:42:06,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:06,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890882934] [2024-10-24 23:42:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:06,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:06,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890882934] [2024-10-24 23:42:06,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890882934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:06,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:06,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:42:06,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986789621] [2024-10-24 23:42:06,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:06,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:06,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:06,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:06,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:06,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 89 [2024-10-24 23:42:06,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 388 transitions, 3594 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-10-24 23:42:06,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:06,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 89 [2024-10-24 23:42:06,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:09,863 INFO L124 PetriNetUnfolderBase]: 13884/23699 cut-off events. [2024-10-24 23:42:09,863 INFO L125 PetriNetUnfolderBase]: For 27407/27407 co-relation queries the response was YES. [2024-10-24 23:42:10,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63014 conditions, 23699 events. 13884/23699 cut-off events. For 27407/27407 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 181751 event pairs, 5111 based on Foata normal form. 620/20363 useless extension candidates. Maximal degree in co-relation 62961. Up to 15939 conditions per place. [2024-10-24 23:42:10,162 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 394 selfloop transitions, 8 changer transitions 0/425 dead transitions. [2024-10-24 23:42:10,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 425 transitions, 4546 flow [2024-10-24 23:42:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:42:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:42:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-10-24 23:42:10,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5421348314606742 [2024-10-24 23:42:10,163 INFO L175 Difference]: Start difference. First operand has 186 places, 388 transitions, 3594 flow. Second operand 4 states and 193 transitions. [2024-10-24 23:42:10,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 425 transitions, 4546 flow [2024-10-24 23:42:10,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 425 transitions, 4510 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-24 23:42:10,258 INFO L231 Difference]: Finished difference. Result has 189 places, 389 transitions, 3591 flow [2024-10-24 23:42:10,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=3562, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3591, PETRI_PLACES=189, PETRI_TRANSITIONS=389} [2024-10-24 23:42:10,259 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 103 predicate places. [2024-10-24 23:42:10,259 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 389 transitions, 3591 flow [2024-10-24 23:42:10,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-10-24 23:42:10,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:10,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:10,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 23:42:10,260 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:10,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1236604459, now seen corresponding path program 1 times [2024-10-24 23:42:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:10,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410039439] [2024-10-24 23:42:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:10,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:10,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410039439] [2024-10-24 23:42:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410039439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999954482] [2024-10-24 23:42:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:10,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:10,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:10,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:10,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:42:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:10,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 23:42:10,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:10,842 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 [2024-10-24 23:42:10,869 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 23 treesize of output 1 [2024-10-24 23:42:10,915 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:42:10,916 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 [2024-10-24 23:42:10,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-24 23:42:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:11,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:11,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:42:11,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-10-24 23:42:11,647 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-24 23:42:11,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 49 [2024-10-24 23:42:11,661 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 23:42:11,662 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 38 treesize of output 26 [2024-10-24 23:42:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:11,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999954482] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:11,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:11,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2024-10-24 23:42:11,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386937825] [2024-10-24 23:42:11,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:11,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:42:11,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:42:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=631, Unknown=2, NotChecked=0, Total=756 [2024-10-24 23:42:11,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 89 [2024-10-24 23:42:11,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 389 transitions, 3591 flow. Second operand has 28 states, 28 states have (on average 19.142857142857142) internal successors, (536), 28 states have internal predecessors, (536), 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) [2024-10-24 23:42:11,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:11,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 89 [2024-10-24 23:42:11,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:18,848 INFO L124 PetriNetUnfolderBase]: 23533/41197 cut-off events. [2024-10-24 23:42:18,848 INFO L125 PetriNetUnfolderBase]: For 57759/57797 co-relation queries the response was YES. [2024-10-24 23:42:19,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105442 conditions, 41197 events. 23533/41197 cut-off events. For 57759/57797 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 347496 event pairs, 8132 based on Foata normal form. 1093/36649 useless extension candidates. Maximal degree in co-relation 105388. Up to 14337 conditions per place. [2024-10-24 23:42:19,547 INFO L140 encePairwiseOnDemand]: 71/89 looper letters, 462 selfloop transitions, 240 changer transitions 2/718 dead transitions. [2024-10-24 23:42:19,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 718 transitions, 6370 flow [2024-10-24 23:42:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-24 23:42:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-24 23:42:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 959 transitions. [2024-10-24 23:42:19,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3265236636023153 [2024-10-24 23:42:19,549 INFO L175 Difference]: Start difference. First operand has 189 places, 389 transitions, 3591 flow. Second operand 33 states and 959 transitions. [2024-10-24 23:42:19,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 718 transitions, 6370 flow [2024-10-24 23:42:19,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 718 transitions, 6339 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 23:42:19,680 INFO L231 Difference]: Finished difference. Result has 231 places, 441 transitions, 4698 flow [2024-10-24 23:42:19,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4698, PETRI_PLACES=231, PETRI_TRANSITIONS=441} [2024-10-24 23:42:19,681 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 145 predicate places. [2024-10-24 23:42:19,681 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 441 transitions, 4698 flow [2024-10-24 23:42:19,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.142857142857142) internal successors, (536), 28 states have internal predecessors, (536), 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) [2024-10-24 23:42:19,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:19,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:19,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 23:42:19,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 23:42:19,882 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:19,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:19,883 INFO L85 PathProgramCache]: Analyzing trace with hash 483772259, now seen corresponding path program 2 times [2024-10-24 23:42:19,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:19,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614385553] [2024-10-24 23:42:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614385553] [2024-10-24 23:42:20,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614385553] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036446803] [2024-10-24 23:42:20,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:42:20,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:20,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:20,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:20,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 23:42:20,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:42:20,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:42:20,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:42:20,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:20,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:42:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036446803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:20,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:42:20,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2024-10-24 23:42:20,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429748871] [2024-10-24 23:42:20,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:20,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:42:20,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:20,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:42:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:42:20,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 89 [2024-10-24 23:42:20,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 441 transitions, 4698 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2024-10-24 23:42:20,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:20,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 89 [2024-10-24 23:42:20,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:24,638 INFO L124 PetriNetUnfolderBase]: 14783/26848 cut-off events. [2024-10-24 23:42:24,638 INFO L125 PetriNetUnfolderBase]: For 113397/113482 co-relation queries the response was YES. [2024-10-24 23:42:25,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87218 conditions, 26848 events. 14783/26848 cut-off events. For 113397/113482 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 222625 event pairs, 7548 based on Foata normal form. 489/23912 useless extension candidates. Maximal degree in co-relation 87152. Up to 19390 conditions per place. [2024-10-24 23:42:25,122 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 441 selfloop transitions, 20 changer transitions 0/489 dead transitions. [2024-10-24 23:42:25,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 489 transitions, 5848 flow [2024-10-24 23:42:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:42:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:42:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-10-24 23:42:25,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49625468164794007 [2024-10-24 23:42:25,123 INFO L175 Difference]: Start difference. First operand has 231 places, 441 transitions, 4698 flow. Second operand 6 states and 265 transitions. [2024-10-24 23:42:25,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 489 transitions, 5848 flow [2024-10-24 23:42:25,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 489 transitions, 5606 flow, removed 36 selfloop flow, removed 14 redundant places. [2024-10-24 23:42:25,791 INFO L231 Difference]: Finished difference. Result has 224 places, 447 transitions, 4589 flow [2024-10-24 23:42:25,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4589, PETRI_PLACES=224, PETRI_TRANSITIONS=447} [2024-10-24 23:42:25,792 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 138 predicate places. [2024-10-24 23:42:25,792 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 447 transitions, 4589 flow [2024-10-24 23:42:25,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2024-10-24 23:42:25,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:25,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:25,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 23:42:25,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 23:42:25,994 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:25,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash -662428073, now seen corresponding path program 1 times [2024-10-24 23:42:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430445392] [2024-10-24 23:42:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:26,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:26,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430445392] [2024-10-24 23:42:26,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430445392] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:42:26,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901589561] [2024-10-24 23:42:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:26,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:26,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:42:26,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:42:26,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 23:42:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:26,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 23:42:26,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:42:26,555 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 [2024-10-24 23:42:26,585 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 23 treesize of output 1 [2024-10-24 23:42:26,677 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:42:26,677 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 [2024-10-24 23:42:26,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-24 23:42:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:42:27,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:42:27,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:42:27,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-10-24 23:42:27,634 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-10-24 23:42:27,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 68 [2024-10-24 23:42:27,647 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-24 23:42:27,647 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 38 treesize of output 26 [2024-10-24 23:42:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:42:27,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901589561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:42:27,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:42:27,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2024-10-24 23:42:27,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608168797] [2024-10-24 23:42:27,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:42:27,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:42:27,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:42:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=636, Unknown=2, NotChecked=0, Total=756 [2024-10-24 23:42:31,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:42:31,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 89 [2024-10-24 23:42:31,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 447 transitions, 4589 flow. Second operand has 28 states, 28 states have (on average 19.25) internal successors, (539), 28 states have internal predecessors, (539), 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) [2024-10-24 23:42:31,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:31,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 89 [2024-10-24 23:42:31,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:36,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 23:42:50,356 INFO L124 PetriNetUnfolderBase]: 30634/54195 cut-off events. [2024-10-24 23:42:50,356 INFO L125 PetriNetUnfolderBase]: For 145964/145996 co-relation queries the response was YES. [2024-10-24 23:42:51,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153063 conditions, 54195 events. 30634/54195 cut-off events. For 145964/145996 co-relation queries the response was YES. Maximal size of possible extension queue 1744. Compared 483255 event pairs, 10687 based on Foata normal form. 716/47410 useless extension candidates. Maximal degree in co-relation 152998. Up to 15155 conditions per place. [2024-10-24 23:42:51,290 INFO L140 encePairwiseOnDemand]: 70/89 looper letters, 541 selfloop transitions, 274 changer transitions 29/858 dead transitions. [2024-10-24 23:42:51,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 858 transitions, 8126 flow [2024-10-24 23:42:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-24 23:42:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-24 23:42:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1250 transitions. [2024-10-24 23:42:51,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3192032686414709 [2024-10-24 23:42:51,293 INFO L175 Difference]: Start difference. First operand has 224 places, 447 transitions, 4589 flow. Second operand 44 states and 1250 transitions. [2024-10-24 23:42:51,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 858 transitions, 8126 flow [2024-10-24 23:42:52,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 858 transitions, 8043 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-10-24 23:42:52,451 INFO L231 Difference]: Finished difference. Result has 273 places, 470 transitions, 5459 flow [2024-10-24 23:42:52,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5459, PETRI_PLACES=273, PETRI_TRANSITIONS=470} [2024-10-24 23:42:52,452 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 187 predicate places. [2024-10-24 23:42:52,452 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 470 transitions, 5459 flow [2024-10-24 23:42:52,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.25) internal successors, (539), 28 states have internal predecessors, (539), 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) [2024-10-24 23:42:52,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:42:52,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:42:52,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-24 23:42:52,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:42:52,653 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-24 23:42:52,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:42:52,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1441203909, now seen corresponding path program 1 times [2024-10-24 23:42:52,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:42:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093773040] [2024-10-24 23:42:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:42:52,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:42:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:42:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:42:52,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:42:52,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093773040] [2024-10-24 23:42:52,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093773040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:42:52,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:42:52,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:42:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761644486] [2024-10-24 23:42:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:42:52,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:42:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:42:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:42:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:42:52,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 89 [2024-10-24 23:42:52,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 470 transitions, 5459 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-10-24 23:42:52,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:42:52,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 89 [2024-10-24 23:42:52,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:42:56,616 INFO L124 PetriNetUnfolderBase]: 13160/26070 cut-off events. [2024-10-24 23:42:56,616 INFO L125 PetriNetUnfolderBase]: For 118825/118924 co-relation queries the response was YES.