./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_ok_longer.i -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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 14:52:46,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 14:52:46,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 14:52:46,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 14:52:46,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 14:52:46,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 14:52:46,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 14:52:46,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 14:52:46,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 14:52:46,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 14:52:46,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 14:52:46,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 14:52:46,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 14:52:46,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 14:52:46,694 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 14:52:46,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 14:52:46,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 14:52:46,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 14:52:46,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 14:52:46,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 14:52:46,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 14:52:46,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 14:52:46,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 14:52:46,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 14:52:46,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 14:52:46,703 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 14:52:46,703 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 14:52:46,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 14:52:46,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 14:52:46,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 14:52:46,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 14:52:46,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 14:52:46,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 14:52:46,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 14:52:46,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:52:46,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 14:52:46,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 14:52:46,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 14:52:46,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 14:52:46,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 14:52:46,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 14:52:46,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 14:52:46,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 14:52:46,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 14:52:46,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2024-11-09 14:52:46,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 14:52:47,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 14:52:47,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 14:52:47,014 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 14:52:47,015 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 14:52:47,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-09 14:52:48,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 14:52:48,750 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 14:52:48,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-09 14:52:48,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd83f4d2a/e5985dc7adb845a890b66088ad4ce330/FLAG81bc80d38 [2024-11-09 14:52:48,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd83f4d2a/e5985dc7adb845a890b66088ad4ce330 [2024-11-09 14:52:48,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 14:52:48,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 14:52:48,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 14:52:48,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 14:52:48,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 14:52:48,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:48" (1/1) ... [2024-11-09 14:52:48,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cf7cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:48, skipping insertion in model container [2024-11-09 14:52:48,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:48" (1/1) ... [2024-11-09 14:52:48,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 14:52:49,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:52:49,461 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 14:52:49,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:52:49,719 INFO L204 MainTranslator]: Completed translation [2024-11-09 14:52:49,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49 WrapperNode [2024-11-09 14:52:49,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 14:52:49,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 14:52:49,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 14:52:49,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 14:52:49,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,855 INFO L138 Inliner]: procedures = 274, calls = 854, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1013 [2024-11-09 14:52:49,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 14:52:49,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 14:52:49,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 14:52:49,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 14:52:49,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,925 INFO L175 MemorySlicer]: Split 835 memory accesses to 4 slices as follows [2, 5, 402, 426]. 51 percent of accesses are in the largest equivalence class. The 810 initializations are split as follows [2, 5, 400, 403]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-09 14:52:49,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:49,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 14:52:49,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 14:52:49,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 14:52:49,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 14:52:49,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (1/1) ... [2024-11-09 14:52:50,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:52:50,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:52:50,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 14:52:50,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 14:52:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 14:52:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 14:52:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 14:52:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 14:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 14:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 14:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 14:52:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 14:52:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 14:52:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 14:52:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 14:52:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 14:52:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 14:52:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 14:52:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 14:52:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 14:52:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 14:52:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 14:52:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 14:52:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 14:52:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 14:52:50,098 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 14:52:50,248 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 14:52:50,250 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 14:52:51,499 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 14:52:51,499 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 14:52:59,328 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 14:52:59,328 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 14:52:59,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:59 BoogieIcfgContainer [2024-11-09 14:52:59,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 14:52:59,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 14:52:59,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 14:52:59,334 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 14:52:59,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:52:48" (1/3) ... [2024-11-09 14:52:59,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b70d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:59, skipping insertion in model container [2024-11-09 14:52:59,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:49" (2/3) ... [2024-11-09 14:52:59,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b70d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:59, skipping insertion in model container [2024-11-09 14:52:59,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:59" (3/3) ... [2024-11-09 14:52:59,338 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2024-11-09 14:52:59,355 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 14:52:59,356 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-09 14:52:59,356 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 14:52:59,455 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 14:52:59,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 61 transitions, 136 flow [2024-11-09 14:52:59,574 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-09 14:52:59,574 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 14:52:59,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 7/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 173 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-11-09 14:52:59,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 61 transitions, 136 flow [2024-11-09 14:52:59,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 123 flow [2024-11-09 14:52:59,594 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 14:52:59,602 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;@5eff444d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 14:52:59,603 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-09 14:52:59,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 14:52:59,655 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-09 14:52:59,655 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 14:52:59,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:59,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:59,657 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 14:52:59,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1796581475, now seen corresponding path program 1 times [2024-11-09 14:52:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:59,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759013067] [2024-11-09 14:52:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:59,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:01,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759013067] [2024-11-09 14:53:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759013067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:01,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:01,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:01,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060950433] [2024-11-09 14:53:01,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:01,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:01,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:01,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:01,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:01,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-09 14:53:01,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:01,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:01,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-09 14:53:01,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:02,577 INFO L124 PetriNetUnfolderBase]: 1022/2058 cut-off events. [2024-11-09 14:53:02,578 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-09 14:53:02,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 2058 events. 1022/2058 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13221 event pairs, 209 based on Foata normal form. 28/1694 useless extension candidates. Maximal degree in co-relation 3564. Up to 1033 conditions per place. [2024-11-09 14:53:02,599 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 73 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2024-11-09 14:53:02,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 372 flow [2024-11-09 14:53:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-09 14:53:02,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7008196721311475 [2024-11-09 14:53:02,616 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 123 flow. Second operand 4 states and 171 transitions. [2024-11-09 14:53:02,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 372 flow [2024-11-09 14:53:02,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 363 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:02,627 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 156 flow [2024-11-09 14:53:02,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-11-09 14:53:02,634 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-11-09 14:53:02,635 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 156 flow [2024-11-09 14:53:02,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:02,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:02,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:02,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 14:53:02,636 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 14:53:02,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash -140546899, now seen corresponding path program 1 times [2024-11-09 14:53:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194641004] [2024-11-09 14:53:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:02,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:04,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:04,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194641004] [2024-11-09 14:53:04,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194641004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:04,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:04,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:04,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247325226] [2024-11-09 14:53:04,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:04,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:04,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:04,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-09 14:53:04,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:04,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:04,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-09 14:53:04,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:04,616 INFO L124 PetriNetUnfolderBase]: 1017/2063 cut-off events. [2024-11-09 14:53:04,616 INFO L125 PetriNetUnfolderBase]: For 425/429 co-relation queries the response was YES. [2024-11-09 14:53:04,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 2063 events. 1017/2063 cut-off events. For 425/429 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13211 event pairs, 213 based on Foata normal form. 46/1819 useless extension candidates. Maximal degree in co-relation 3538. Up to 1122 conditions per place. [2024-11-09 14:53:04,631 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 81 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-11-09 14:53:04,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 435 flow [2024-11-09 14:53:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:53:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:53:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-11-09 14:53:04,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6688524590163935 [2024-11-09 14:53:04,634 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 156 flow. Second operand 5 states and 204 transitions. [2024-11-09 14:53:04,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 435 flow [2024-11-09 14:53:04,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 108 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:04,642 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 174 flow [2024-11-09 14:53:04,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-09 14:53:04,643 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-11-09 14:53:04,643 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 174 flow [2024-11-09 14:53:04,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:04,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:04,644 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:04,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 14:53:04,644 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 14:53:04,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1393013503, now seen corresponding path program 1 times [2024-11-09 14:53:04,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:04,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219346116] [2024-11-09 14:53:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:04,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:04,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219346116] [2024-11-09 14:53:04,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219346116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:04,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:04,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397290152] [2024-11-09 14:53:04,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:04,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 14:53:04,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:04,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 14:53:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 14:53:04,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-09 14:53:04,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:04,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:04,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-09 14:53:04,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:05,204 INFO L124 PetriNetUnfolderBase]: 473/1087 cut-off events. [2024-11-09 14:53:05,205 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-11-09 14:53:05,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 1087 events. 473/1087 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6373 event pairs, 266 based on Foata normal form. 27/998 useless extension candidates. Maximal degree in co-relation 1822. Up to 444 conditions per place. [2024-11-09 14:53:05,211 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 39 selfloop transitions, 2 changer transitions 6/70 dead transitions. [2024-11-09 14:53:05,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 277 flow [2024-11-09 14:53:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 14:53:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 14:53:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-09 14:53:05,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-11-09 14:53:05,217 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 174 flow. Second operand 3 states and 120 transitions. [2024-11-09 14:53:05,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 277 flow [2024-11-09 14:53:05,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 264 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 14:53:05,219 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 153 flow [2024-11-09 14:53:05,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-09 14:53:05,221 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2024-11-09 14:53:05,222 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 153 flow [2024-11-09 14:53:05,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:05,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:05,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:05,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 14:53:05,223 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 14:53:05,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1921512560, now seen corresponding path program 1 times [2024-11-09 14:53:05,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:05,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780015573] [2024-11-09 14:53:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:06,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:06,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780015573] [2024-11-09 14:53:06,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780015573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:06,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:06,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:06,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994512472] [2024-11-09 14:53:06,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:06,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:06,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:06,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 14:53:06,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-09 14:53:06,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:06,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:06,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-09 14:53:06,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:07,086 INFO L124 PetriNetUnfolderBase]: 505/1127 cut-off events. [2024-11-09 14:53:07,086 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-09 14:53:07,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1127 events. 505/1127 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6475 event pairs, 179 based on Foata normal form. 12/1025 useless extension candidates. Maximal degree in co-relation 1878. Up to 476 conditions per place. [2024-11-09 14:53:07,092 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 71 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-11-09 14:53:07,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 403 flow [2024-11-09 14:53:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 14:53:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 14:53:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-11-09 14:53:07,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5956284153005464 [2024-11-09 14:53:07,094 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 153 flow. Second operand 6 states and 218 transitions. [2024-11-09 14:53:07,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 403 flow [2024-11-09 14:53:07,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:07,097 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 184 flow [2024-11-09 14:53:07,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-11-09 14:53:07,098 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-11-09 14:53:07,098 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 184 flow [2024-11-09 14:53:07,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:07,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:07,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:07,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 14:53:07,099 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 14:53:07,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash 562656009, now seen corresponding path program 1 times [2024-11-09 14:53:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29749180] [2024-11-09 14:53:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:07,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:07,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29749180] [2024-11-09 14:53:07,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29749180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:07,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:07,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11540846] [2024-11-09 14:53:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:07,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:07,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:07,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:07,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-09 14:53:07,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2024-11-09 14:53:07,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:07,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-09 14:53:07,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:07,725 INFO L124 PetriNetUnfolderBase]: 440/980 cut-off events. [2024-11-09 14:53:07,726 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2024-11-09 14:53:07,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 980 events. 440/980 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5189 event pairs, 293 based on Foata normal form. 24/933 useless extension candidates. Maximal degree in co-relation 1833. Up to 591 conditions per place. [2024-11-09 14:53:07,733 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 53 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-11-09 14:53:07,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 325 flow [2024-11-09 14:53:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-09 14:53:07,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6188524590163934 [2024-11-09 14:53:07,735 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 184 flow. Second operand 4 states and 151 transitions. [2024-11-09 14:53:07,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 325 flow [2024-11-09 14:53:07,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 316 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:07,739 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 192 flow [2024-11-09 14:53:07,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-09 14:53:07,740 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-11-09 14:53:07,740 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 192 flow [2024-11-09 14:53:07,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2024-11-09 14:53:07,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:07,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:07,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 14:53:07,741 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 14:53:07,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1169973354, now seen corresponding path program 1 times [2024-11-09 14:53:07,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:07,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551677980] [2024-11-09 14:53:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:07,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:08,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:08,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551677980] [2024-11-09 14:53:08,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551677980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:08,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:08,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 14:53:08,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949994067] [2024-11-09 14:53:08,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:08,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:08,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:08,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 14:53:08,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-11-09 14:53:08,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:08,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:08,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-11-09 14:53:08,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:09,317 INFO L124 PetriNetUnfolderBase]: 398/938 cut-off events. [2024-11-09 14:53:09,318 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-09 14:53:09,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 938 events. 398/938 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5013 event pairs, 118 based on Foata normal form. 12/895 useless extension candidates. Maximal degree in co-relation 1667. Up to 457 conditions per place. [2024-11-09 14:53:09,323 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 55 selfloop transitions, 5 changer transitions 3/86 dead transitions. [2024-11-09 14:53:09,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 369 flow [2024-11-09 14:53:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:53:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:53:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-11-09 14:53:09,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131147540983607 [2024-11-09 14:53:09,325 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 192 flow. Second operand 5 states and 187 transitions. [2024-11-09 14:53:09,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 369 flow [2024-11-09 14:53:09,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:09,328 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 196 flow [2024-11-09 14:53:09,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-11-09 14:53:09,328 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-11-09 14:53:09,328 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 196 flow [2024-11-09 14:53:09,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:09,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:09,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:09,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 14:53:09,329 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 14:53:09,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1755544748, now seen corresponding path program 1 times [2024-11-09 14:53:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:09,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295868872] [2024-11-09 14:53:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:12,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295868872] [2024-11-09 14:53:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295868872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040104365] [2024-11-09 14:53:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:12,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:12,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:12,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:12,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 14:53:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:12,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 14:53:12,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:12,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 14:53:12,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 15 [2024-11-09 14:53:12,826 INFO L349 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2024-11-09 14:53:12,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 71 [2024-11-09 14:53:12,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:12,846 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 54 treesize of output 39 [2024-11-09 14:53:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:12,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:13,172 INFO L349 Elim1Store]: treesize reduction 45, result has 53.6 percent of original size [2024-11-09 14:53:13,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 181 [2024-11-09 14:53:13,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:13,213 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 148 treesize of output 142 [2024-11-09 14:53:13,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-09 14:53:13,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:13,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 180 [2024-11-09 14:53:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:13,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040104365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:13,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-09 14:53:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679177787] [2024-11-09 14:53:13,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:13,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 14:53:13,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:13,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 14:53:13,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-09 14:53:13,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-09 14:53:13,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 196 flow. Second operand has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:13,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:13,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-09 14:53:13,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:15,550 INFO L124 PetriNetUnfolderBase]: 769/1660 cut-off events. [2024-11-09 14:53:15,551 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-11-09 14:53:15,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3614 conditions, 1660 events. 769/1660 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9220 event pairs, 123 based on Foata normal form. 24/1551 useless extension candidates. Maximal degree in co-relation 3050. Up to 250 conditions per place. [2024-11-09 14:53:15,561 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 128 selfloop transitions, 16 changer transitions 3/165 dead transitions. [2024-11-09 14:53:15,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 165 transitions, 742 flow [2024-11-09 14:53:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 14:53:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 14:53:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 427 transitions. [2024-11-09 14:53:15,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 14:53:15,565 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 196 flow. Second operand 14 states and 427 transitions. [2024-11-09 14:53:15,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 165 transitions, 742 flow [2024-11-09 14:53:15,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 165 transitions, 732 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 14:53:15,572 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 252 flow [2024-11-09 14:53:15,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=252, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-11-09 14:53:15,573 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-11-09 14:53:15,574 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 252 flow [2024-11-09 14:53:15,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:15,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:15,575 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:15,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 14:53:15,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:15,776 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-09 14:53:15,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1412689884, now seen corresponding path program 1 times [2024-11-09 14:53:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:15,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206749747] [2024-11-09 14:53:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:15,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206749747] [2024-11-09 14:53:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206749747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:17,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300287338] [2024-11-09 14:53:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:17,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:17,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:17,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:17,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 14:53:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:18,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 14:53:18,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:18,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2024-11-09 14:53:18,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 14:53:18,307 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 14:53:18,329 INFO L349 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2024-11-09 14:53:18,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 47 [2024-11-09 14:53:18,403 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 14:53:18,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 42 [2024-11-09 14:53:18,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:18,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 55 treesize of output 27 [2024-11-09 14:53:18,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2024-11-09 14:53:18,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:18,593 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 43 treesize of output 23 [2024-11-09 14:53:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:18,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300287338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:26,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:26,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-09 14:53:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41049790] [2024-11-09 14:53:26,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:26,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 14:53:26,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 14:53:26,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=260, Unknown=4, NotChecked=0, Total=342 [2024-11-09 14:53:28,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:30,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:31,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:31,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2024-11-09 14:53:31,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 252 flow. Second operand has 19 states, 19 states have (on average 21.42105263157895) internal successors, (407), 19 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:31,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:31,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2024-11-09 14:53:31,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:42,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:50,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:51,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:53,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:54,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:56,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:58,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:59,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:54:01,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:54:03,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:54:05,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:54:06,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:54:08,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:54:10,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]