./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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/pthread/queue_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:43:08,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:43:08,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 21:43:08,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:43:08,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:43:08,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:43:08,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:43:08,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:43:08,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:43:08,636 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:43:08,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:43:08,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:43:08,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:43:08,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:43:08,640 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:43:08,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:43:08,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:43:08,641 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 21:43:08,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:43:08,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 21:43:08,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:43:08,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:43:08,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:43:08,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:43:08,646 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:43:08,646 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:43:08,646 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:43:08,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 21:43:08,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:43:08,647 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:43:08,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:43:08,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:43:08,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:43:08,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:43:08,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:43:08,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:43:08,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:43:08,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:43:08,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:43:08,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:43:08,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:43:08,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:43:08,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:43:08,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:43:08,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-11-20 21:43:08,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:43:08,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:43:08,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:43:08,939 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:43:08,940 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:43:08,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-11-20 21:43:10,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:43:10,695 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:43:10,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-11-20 21:43:10,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763b45298/3e964e1278a244f19b3c3aff36f3707d/FLAGc541a2b20 [2024-11-20 21:43:10,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763b45298/3e964e1278a244f19b3c3aff36f3707d [2024-11-20 21:43:10,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:43:10,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:43:10,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:43:10,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:43:10,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:43:10,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:43:10" (1/1) ... [2024-11-20 21:43:10,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cec1eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:10, skipping insertion in model container [2024-11-20 21:43:10,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:43:10" (1/1) ... [2024-11-20 21:43:10,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:43:11,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:43:11,378 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:43:11,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:43:11,584 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:43:11,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11 WrapperNode [2024-11-20 21:43:11,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:43:11,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:43:11,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:43:11,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:43:11,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,754 INFO L138 Inliner]: procedures = 274, calls = 1659, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1864 [2024-11-20 21:43:11,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:43:11,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:43:11,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:43:11,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:43:11,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,842 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 5, 834, 803]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 803, 800]. The 16 writes are split as follows [0, 0, 14, 2]. [2024-11-20 21:43:11,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:43:11,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:43:11,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:43:11,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:43:11,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (1/1) ... [2024-11-20 21:43:11,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:43:11,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:43:11,968 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) [2024-11-20 21:43:11,975 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 [2024-11-20 21:43:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-20 21:43:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-20 21:43:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-20 21:43:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-20 21:43:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 21:43:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 21:43:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 21:43:12,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 21:43:12,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 21:43:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 21:43:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 21:43:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:43:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:43:12,065 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 21:43:12,256 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:43:12,258 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:43:14,054 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 21:43:14,054 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:43:45,605 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:43:45,606 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 21:43:45,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:43:45 BoogieIcfgContainer [2024-11-20 21:43:45,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:43:45,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:43:45,611 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:43:45,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:43:45,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:43:10" (1/3) ... [2024-11-20 21:43:45,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786f8068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:43:45, skipping insertion in model container [2024-11-20 21:43:45,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:43:11" (2/3) ... [2024-11-20 21:43:45,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786f8068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:43:45, skipping insertion in model container [2024-11-20 21:43:45,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:43:45" (3/3) ... [2024-11-20 21:43:45,616 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2024-11-20 21:43:45,634 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:43:45,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-20 21:43:45,635 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 21:43:45,766 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 21:43:45,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 180 flow [2024-11-20 21:43:45,944 INFO L124 PetriNetUnfolderBase]: 9/81 cut-off events. [2024-11-20 21:43:45,945 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 21:43:45,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 9/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-11-20 21:43:45,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 180 flow [2024-11-20 21:43:45,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 79 transitions, 167 flow [2024-11-20 21:43:45,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:43:45,974 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;@54fe104e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:43:45,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-20 21:43:46,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:43:46,067 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-20 21:43:46,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:43:46,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:43:46,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 21:43:46,069 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:43:46,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:43:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash -356156547, now seen corresponding path program 1 times [2024-11-20 21:43:46,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:43:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745002753] [2024-11-20 21:43:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:43:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:43:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:43:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:43:49,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:43:49,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745002753] [2024-11-20 21:43:49,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745002753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:43:49,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:43:49,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:43:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924126520] [2024-11-20 21:43:49,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:43:49,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:43:49,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:43:49,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:43:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:43:49,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-20 21:43:49,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-20 21:43:49,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:43:49,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-20 21:43:49,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:43:50,299 INFO L124 PetriNetUnfolderBase]: 1233/2525 cut-off events. [2024-11-20 21:43:50,300 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-20 21:43:50,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2525 events. 1233/2525 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15719 event pairs, 205 based on Foata normal form. 48/2196 useless extension candidates. Maximal degree in co-relation 4434. Up to 1608 conditions per place. [2024-11-20 21:43:50,322 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 73 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2024-11-20 21:43:50,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 391 flow [2024-11-20 21:43:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:43:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:43:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-20 21:43:50,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6295180722891566 [2024-11-20 21:43:50,336 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 4 states and 209 transitions. [2024-11-20 21:43:50,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 391 flow [2024-11-20 21:43:50,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 384 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:43:50,347 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 202 flow [2024-11-20 21:43:50,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-11-20 21:43:50,356 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-11-20 21:43:50,357 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 202 flow [2024-11-20 21:43:50,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-20 21:43:50,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:43:50,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:43:50,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:43:50,358 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:43:50,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:43:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1844052889, now seen corresponding path program 1 times [2024-11-20 21:43:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:43:50,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211929836] [2024-11-20 21:43:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:43:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:43:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:43:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:43:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:43:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211929836] [2024-11-20 21:43:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211929836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:43:52,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:43:52,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:43:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608345777] [2024-11-20 21:43:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:43:52,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:43:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:43:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:43:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:43:52,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-20 21:43:52,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-20 21:43:52,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:43:52,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-20 21:43:52,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:43:53,051 INFO L124 PetriNetUnfolderBase]: 1242/2581 cut-off events. [2024-11-20 21:43:53,051 INFO L125 PetriNetUnfolderBase]: For 452/455 co-relation queries the response was YES. [2024-11-20 21:43:53,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4890 conditions, 2581 events. 1242/2581 cut-off events. For 452/455 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16541 event pairs, 264 based on Foata normal form. 38/2287 useless extension candidates. Maximal degree in co-relation 4354. Up to 1757 conditions per place. [2024-11-20 21:43:53,069 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 81 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-11-20 21:43:53,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 456 flow [2024-11-20 21:43:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:43:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:43:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2024-11-20 21:43:53,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-20 21:43:53,072 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 202 flow. Second operand 5 states and 249 transitions. [2024-11-20 21:43:53,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 456 flow [2024-11-20 21:43:53,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:43:53,077 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 219 flow [2024-11-20 21:43:53,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-20 21:43:53,078 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-11-20 21:43:53,078 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 219 flow [2024-11-20 21:43:53,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-11-20 21:43:53,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:43:53,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:43:53,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 21:43:53,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:43:53,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:43:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1686540228, now seen corresponding path program 1 times [2024-11-20 21:43:53,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:43:53,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314109983] [2024-11-20 21:43:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:43:53,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:43:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:43:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:43:54,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:43:54,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314109983] [2024-11-20 21:43:54,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314109983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:43:54,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:43:54,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:43:54,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811344978] [2024-11-20 21:43:54,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:43:54,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:43:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:43:54,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:43:54,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:43:54,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-20 21:43:54,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2024-11-20 21:43:54,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:43:54,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-20 21:43:54,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:43:55,564 INFO L124 PetriNetUnfolderBase]: 1322/2691 cut-off events. [2024-11-20 21:43:55,565 INFO L125 PetriNetUnfolderBase]: For 528/544 co-relation queries the response was YES. [2024-11-20 21:43:55,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5199 conditions, 2691 events. 1322/2691 cut-off events. For 528/544 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 17156 event pairs, 266 based on Foata normal form. 40/2367 useless extension candidates. Maximal degree in co-relation 4657. Up to 1803 conditions per place. [2024-11-20 21:43:55,584 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 102 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2024-11-20 21:43:55,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 143 transitions, 585 flow [2024-11-20 21:43:55,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 21:43:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 21:43:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-11-20 21:43:55,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5851979345955249 [2024-11-20 21:43:55,586 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 219 flow. Second operand 7 states and 340 transitions. [2024-11-20 21:43:55,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 143 transitions, 585 flow [2024-11-20 21:43:55,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 571 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-20 21:43:55,591 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 274 flow [2024-11-20 21:43:55,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-20 21:43:55,592 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-11-20 21:43:55,592 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 274 flow [2024-11-20 21:43:55,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2024-11-20 21:43:55,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:43:55,593 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:43:55,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 21:43:55,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:43:55,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:43:55,594 INFO L85 PathProgramCache]: Analyzing trace with hash -695850318, now seen corresponding path program 1 times [2024-11-20 21:43:55,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:43:55,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851386682] [2024-11-20 21:43:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:43:55,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:43:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:43:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:43:55,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:43:55,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851386682] [2024-11-20 21:43:55,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851386682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:43:55,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:43:55,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:43:55,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262895384] [2024-11-20 21:43:55,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:43:55,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 21:43:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:43:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 21:43:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 21:43:55,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-20 21:43:55,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-11-20 21:43:55,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:43:55,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-20 21:43:55,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:43:56,605 INFO L124 PetriNetUnfolderBase]: 1023/2371 cut-off events. [2024-11-20 21:43:56,606 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2024-11-20 21:43:56,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4342 conditions, 2371 events. 1023/2371 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13928 event pairs, 483 based on Foata normal form. 41/2110 useless extension candidates. Maximal degree in co-relation 4332. Up to 884 conditions per place. [2024-11-20 21:43:56,623 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 63 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-20 21:43:56,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 370 flow [2024-11-20 21:43:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 21:43:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 21:43:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-11-20 21:43:56,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2024-11-20 21:43:56,625 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 274 flow. Second operand 3 states and 175 transitions. [2024-11-20 21:43:56,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 370 flow [2024-11-20 21:43:56,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 331 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-20 21:43:56,630 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 167 flow [2024-11-20 21:43:56,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-11-20 21:43:56,631 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2024-11-20 21:43:56,631 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 167 flow [2024-11-20 21:43:56,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-11-20 21:43:56,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:43:56,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:43:56,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 21:43:56,632 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:43:56,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:43:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1302839221, now seen corresponding path program 1 times [2024-11-20 21:43:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:43:56,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358977832] [2024-11-20 21:43:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:43:56,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:43:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:43:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:43:56,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:43:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358977832] [2024-11-20 21:43:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358977832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:43:56,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:43:56,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:43:56,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365619650] [2024-11-20 21:43:56,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:43:56,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:43:56,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:43:56,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:43:56,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:43:56,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-20 21:43:56,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 167 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) [2024-11-20 21:43:56,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:43:56,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-20 21:43:56,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:43:58,039 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-11-20 21:43:58,039 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-20 21:43:58,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7403 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27021 event pairs, 949 based on Foata normal form. 138/3770 useless extension candidates. Maximal degree in co-relation 7398. Up to 1977 conditions per place. [2024-11-20 21:43:58,069 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 112 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2024-11-20 21:43:58,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 143 transitions, 550 flow [2024-11-20 21:43:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:43:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:43:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-20 21:43:58,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2024-11-20 21:43:58,071 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 167 flow. Second operand 4 states and 251 transitions. [2024-11-20 21:43:58,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 143 transitions, 550 flow [2024-11-20 21:43:58,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 143 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:43:58,075 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 188 flow [2024-11-20 21:43:58,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-20 21:43:58,077 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2024-11-20 21:43:58,077 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 188 flow [2024-11-20 21:43:58,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-20 21:43:58,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:43:58,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:43:58,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 21:43:58,078 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:43:58,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:43:58,078 INFO L85 PathProgramCache]: Analyzing trace with hash -858198870, now seen corresponding path program 1 times [2024-11-20 21:43:58,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:43:58,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437027325] [2024-11-20 21:43:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:43:58,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:43:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:43:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:43:59,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:43:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437027325] [2024-11-20 21:43:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437027325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:43:59,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:43:59,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:43:59,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308364182] [2024-11-20 21:43:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:43:59,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:43:59,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:43:59,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:43:59,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:43:59,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-20 21:43:59,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2024-11-20 21:43:59,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:43:59,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-20 21:43:59,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:43:59,997 INFO L124 PetriNetUnfolderBase]: 1823/4036 cut-off events. [2024-11-20 21:43:59,998 INFO L125 PetriNetUnfolderBase]: For 834/962 co-relation queries the response was YES. [2024-11-20 21:44:00,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 4036 events. 1823/4036 cut-off events. For 834/962 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 26264 event pairs, 263 based on Foata normal form. 0/3590 useless extension candidates. Maximal degree in co-relation 7752. Up to 2417 conditions per place. [2024-11-20 21:44:00,031 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 88 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2024-11-20 21:44:00,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 127 transitions, 558 flow [2024-11-20 21:44:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:44:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:44:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-11-20 21:44:00,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.608433734939759 [2024-11-20 21:44:00,033 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 188 flow. Second operand 6 states and 303 transitions. [2024-11-20 21:44:00,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 127 transitions, 558 flow [2024-11-20 21:44:00,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 127 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:44:00,037 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 220 flow [2024-11-20 21:44:00,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-11-20 21:44:00,038 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-11-20 21:44:00,038 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 220 flow [2024-11-20 21:44:00,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2024-11-20 21:44:00,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:44:00,038 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:44:00,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 21:44:00,039 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:44:00,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:44:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash -109803669, now seen corresponding path program 1 times [2024-11-20 21:44:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:44:00,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226062289] [2024-11-20 21:44:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:44:00,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:44:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:44:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:44:00,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:44:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226062289] [2024-11-20 21:44:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226062289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:44:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557138236] [2024-11-20 21:44:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:44:00,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:44:00,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:44:00,347 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) [2024-11-20 21:44:00,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 21:44:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:44:00,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 21:44:00,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:44:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:44:00,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 21:44:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557138236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:44:00,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 21:44:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 21:44:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55444254] [2024-11-20 21:44:00,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:44:00,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:44:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:44:00,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:44:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:44:01,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-20 21:44:01,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-11-20 21:44:01,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:44:01,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-20 21:44:01,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:44:02,230 INFO L124 PetriNetUnfolderBase]: 1787/3886 cut-off events. [2024-11-20 21:44:02,231 INFO L125 PetriNetUnfolderBase]: For 933/933 co-relation queries the response was YES. [2024-11-20 21:44:02,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8069 conditions, 3886 events. 1787/3886 cut-off events. For 933/933 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 25130 event pairs, 110 based on Foata normal form. 74/3656 useless extension candidates. Maximal degree in co-relation 8061. Up to 1148 conditions per place. [2024-11-20 21:44:02,251 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 171 selfloop transitions, 5 changer transitions 0/204 dead transitions. [2024-11-20 21:44:02,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 204 transitions, 926 flow [2024-11-20 21:44:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:44:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:44:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 367 transitions. [2024-11-20 21:44:02,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7369477911646586 [2024-11-20 21:44:02,254 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 220 flow. Second operand 6 states and 367 transitions. [2024-11-20 21:44:02,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 204 transitions, 926 flow [2024-11-20 21:44:02,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 204 transitions, 880 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 21:44:02,260 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 214 flow [2024-11-20 21:44:02,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-11-20 21:44:02,262 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-11-20 21:44:02,262 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 214 flow [2024-11-20 21:44:02,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-11-20 21:44:02,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:44:02,263 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] [2024-11-20 21:44:02,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 21:44:02,463 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 [2024-11-20 21:44:02,464 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:44:02,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:44:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1606301204, now seen corresponding path program 1 times [2024-11-20 21:44:02,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:44:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30454908] [2024-11-20 21:44:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:44:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:44:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:44:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:44:06,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:44:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30454908] [2024-11-20 21:44:06,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30454908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:44:06,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:44:06,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 21:44:06,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200781946] [2024-11-20 21:44:06,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:44:06,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 21:44:06,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:44:06,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 21:44:06,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:44:06,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-20 21:44:06,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 214 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-20 21:44:06,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:44:06,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-20 21:44:06,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:44:07,735 INFO L124 PetriNetUnfolderBase]: 2417/4975 cut-off events. [2024-11-20 21:44:07,735 INFO L125 PetriNetUnfolderBase]: For 2172/2252 co-relation queries the response was YES. [2024-11-20 21:44:07,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10742 conditions, 4975 events. 2417/4975 cut-off events. For 2172/2252 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 32484 event pairs, 444 based on Foata normal form. 22/4514 useless extension candidates. Maximal degree in co-relation 10734. Up to 2624 conditions per place. [2024-11-20 21:44:07,762 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 137 selfloop transitions, 8 changer transitions 0/170 dead transitions. [2024-11-20 21:44:07,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 170 transitions, 879 flow [2024-11-20 21:44:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 21:44:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 21:44:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2024-11-20 21:44:07,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5060240963855421 [2024-11-20 21:44:07,764 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 214 flow. Second operand 9 states and 378 transitions. [2024-11-20 21:44:07,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 170 transitions, 879 flow [2024-11-20 21:44:07,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 839 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:44:07,769 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 246 flow [2024-11-20 21:44:07,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2024-11-20 21:44:07,772 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-11-20 21:44:07,772 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 246 flow [2024-11-20 21:44:07,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-20 21:44:07,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:44:07,774 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:44:07,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 21:44:07,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:44:07,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:44:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash 891057576, now seen corresponding path program 1 times [2024-11-20 21:44:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:44:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103351753] [2024-11-20 21:44:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:44:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:44:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:44:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:44:07,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:44:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103351753] [2024-11-20 21:44:08,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103351753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:44:08,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:44:08,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:44:08,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701350078] [2024-11-20 21:44:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:44:08,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:44:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:44:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:44:08,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:44:08,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-11-20 21:44:08,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-20 21:44:08,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:44:08,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-11-20 21:44:08,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:44:08,742 INFO L124 PetriNetUnfolderBase]: 2102/4437 cut-off events. [2024-11-20 21:44:08,742 INFO L125 PetriNetUnfolderBase]: For 1708/1762 co-relation queries the response was YES. [2024-11-20 21:44:08,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9637 conditions, 4437 events. 2102/4437 cut-off events. For 1708/1762 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 29064 event pairs, 394 based on Foata normal form. 87/4268 useless extension candidates. Maximal degree in co-relation 9627. Up to 2113 conditions per place. [2024-11-20 21:44:08,766 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 103 selfloop transitions, 6 changer transitions 6/143 dead transitions. [2024-11-20 21:44:08,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 143 transitions, 670 flow [2024-11-20 21:44:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:44:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:44:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-20 21:44:08,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-11-20 21:44:08,769 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 246 flow. Second operand 4 states and 232 transitions. [2024-11-20 21:44:08,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 143 transitions, 670 flow [2024-11-20 21:44:08,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 143 transitions, 644 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-20 21:44:08,778 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 246 flow [2024-11-20 21:44:08,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-20 21:44:08,780 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-11-20 21:44:08,781 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 246 flow [2024-11-20 21:44:08,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-20 21:44:08,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:44:08,782 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] [2024-11-20 21:44:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 21:44:08,782 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:44:08,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:44:08,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1744274213, now seen corresponding path program 1 times [2024-11-20 21:44:08,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:44:08,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082727795] [2024-11-20 21:44:08,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:44:08,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:44:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:44:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:44:12,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:44:12,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082727795] [2024-11-20 21:44:12,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082727795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:44:12,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:44:12,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 21:44:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788189716] [2024-11-20 21:44:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:44:12,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 21:44:12,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:44:12,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 21:44:12,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:44:12,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-11-20 21:44:12,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 246 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-20 21:44:12,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:44:12,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-11-20 21:44:12,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:44:14,204 INFO L124 PetriNetUnfolderBase]: 2331/4834 cut-off events. [2024-11-20 21:44:14,204 INFO L125 PetriNetUnfolderBase]: For 3111/3111 co-relation queries the response was YES. [2024-11-20 21:44:14,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11041 conditions, 4834 events. 2331/4834 cut-off events. For 3111/3111 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 31719 event pairs, 444 based on Foata normal form. 22/4495 useless extension candidates. Maximal degree in co-relation 11031. Up to 2624 conditions per place. [2024-11-20 21:44:14,238 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 132 selfloop transitions, 8 changer transitions 2/167 dead transitions. [2024-11-20 21:44:14,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 167 transitions, 923 flow [2024-11-20 21:44:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 21:44:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 21:44:14,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 375 transitions. [2024-11-20 21:44:14,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020080321285141 [2024-11-20 21:44:14,241 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 246 flow. Second operand 9 states and 375 transitions. [2024-11-20 21:44:14,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 167 transitions, 923 flow [2024-11-20 21:44:14,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 167 transitions, 863 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:44:14,247 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 247 flow [2024-11-20 21:44:14,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=247, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-11-20 21:44:14,249 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2024-11-20 21:44:14,249 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 247 flow [2024-11-20 21:44:14,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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) [2024-11-20 21:44:14,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:44:14,250 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] [2024-11-20 21:44:14,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 21:44:14,250 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-20 21:44:14,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:44:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1762102033, now seen corresponding path program 1 times [2024-11-20 21:44:14,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:44:14,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131820671] [2024-11-20 21:44:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:44:14,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:44:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:44:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:44:14,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:44:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131820671] [2024-11-20 21:44:14,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131820671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:44:14,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:44:14,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:44:14,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825968494] [2024-11-20 21:44:14,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:44:14,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:44:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:44:14,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:44:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:44:14,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-20 21:44:14,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 247 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) [2024-11-20 21:44:14,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:44:14,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-20 21:44:14,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand