./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:07:21,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:07:21,473 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:07:21,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:07:21,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:07:21,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:07:21,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:07:21,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:07:21,503 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:07:21,504 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:07:21,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:07:21,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:07:21,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:07:21,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:07:21,510 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:07:21,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:07:21,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:07:21,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:07:21,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:07:21,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:07:21,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:07:21,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:07:21,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:07:21,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:07:21,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:07:21,512 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:07:21,513 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:07:21,513 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:07:21,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:07:21,513 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:07:21,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:07:21,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:07:21,514 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:07:21,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:07:21,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:07:21,515 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:07:21,515 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:07:21,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:07:21,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:07:21,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:07:21,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:07:21,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:07:21,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:07:21,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:07:21,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-11-09 15:07:21,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:07:21,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:07:21,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:07:21,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:07:21,793 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:07:21,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-09 15:07:23,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:07:23,415 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:07:23,417 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-09 15:07:23,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d26520d/74d1c9b382024ccb9fbe1d4778f2a4c1/FLAGc65c8be4c [2024-11-09 15:07:23,445 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d26520d/74d1c9b382024ccb9fbe1d4778f2a4c1 [2024-11-09 15:07:23,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:07:23,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:07:23,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:07:23,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:07:23,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:07:23,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c594ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23, skipping insertion in model container [2024-11-09 15:07:23,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,484 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:07:23,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:07:23,707 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:07:23,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:07:23,752 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:07:23,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23 WrapperNode [2024-11-09 15:07:23,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:07:23,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:07:23,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:07:23,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:07:23,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,796 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 235 [2024-11-09 15:07:23,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:07:23,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:07:23,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:07:23,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:07:23,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,834 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 15:07:23,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:07:23,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:07:23,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:07:23,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:07:23,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (1/1) ... [2024-11-09 15:07:23,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:07:23,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:23,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:07:23,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:07:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:07:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:07:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:07:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:07:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:07:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:07:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:07:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:07:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:07:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:07:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:07:23,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:07:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:07:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:07:23,950 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:07:24,048 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:07:24,049 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:07:24,377 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:07:24,378 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:07:24,542 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:07:24,543 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 15:07:24,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:07:24 BoogieIcfgContainer [2024-11-09 15:07:24,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:07:24,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:07:24,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:07:24,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:07:24,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:07:23" (1/3) ... [2024-11-09 15:07:24,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20276f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:07:24, skipping insertion in model container [2024-11-09 15:07:24,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:07:23" (2/3) ... [2024-11-09 15:07:24,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20276f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:07:24, skipping insertion in model container [2024-11-09 15:07:24,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:07:24" (3/3) ... [2024-11-09 15:07:24,551 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-11-09 15:07:24,565 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:07:24,566 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-09 15:07:24,566 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:07:24,628 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:07:24,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-11-09 15:07:24,700 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-11-09 15:07:24,701 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:07:24,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 279 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-09 15:07:24,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-11-09 15:07:24,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 173 flow [2024-11-09 15:07:24,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:07:24,729 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;@746fe70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:07:24,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-09 15:07:24,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:07:24,732 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:07:24,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:07:24,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:24,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:07:24,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:24,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash 728004, now seen corresponding path program 1 times [2024-11-09 15:07:24,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:24,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818228912] [2024-11-09 15:07:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:24,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818228912] [2024-11-09 15:07:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818228912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:24,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:24,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316979223] [2024-11-09 15:07:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:24,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:25,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-09 15:07:25,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:25,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:25,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-09 15:07:25,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:25,344 INFO L124 PetriNetUnfolderBase]: 512/1314 cut-off events. [2024-11-09 15:07:25,344 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-09 15:07:25,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 1314 events. 512/1314 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9058 event pairs, 322 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 2041. Up to 772 conditions per place. [2024-11-09 15:07:25,356 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 34 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-09 15:07:25,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 249 flow [2024-11-09 15:07:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:25,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-09 15:07:25,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-11-09 15:07:25,369 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 173 flow. Second operand 4 states and 210 transitions. [2024-11-09 15:07:25,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 249 flow [2024-11-09 15:07:25,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:07:25,376 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 176 flow [2024-11-09 15:07:25,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-11-09 15:07:25,380 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-11-09 15:07:25,380 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 176 flow [2024-11-09 15:07:25,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:25,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:25,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:07:25,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:07:25,382 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:25,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash 22568887, now seen corresponding path program 1 times [2024-11-09 15:07:25,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:25,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875535622] [2024-11-09 15:07:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:25,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875535622] [2024-11-09 15:07:25,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875535622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:25,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:25,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:25,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184211013] [2024-11-09 15:07:25,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:25,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:25,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:25,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:25,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:25,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-09 15:07:25,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:25,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:25,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-09 15:07:25,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:25,674 INFO L124 PetriNetUnfolderBase]: 514/1322 cut-off events. [2024-11-09 15:07:25,674 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 15:07:25,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 1322 events. 514/1322 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9112 event pairs, 322 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 2094. Up to 781 conditions per place. [2024-11-09 15:07:25,685 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-11-09 15:07:25,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 290 flow [2024-11-09 15:07:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-09 15:07:25,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-09 15:07:25,692 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 176 flow. Second operand 4 states and 216 transitions. [2024-11-09 15:07:25,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 290 flow [2024-11-09 15:07:25,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:07:25,698 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 220 flow [2024-11-09 15:07:25,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-11-09 15:07:25,703 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-11-09 15:07:25,703 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 220 flow [2024-11-09 15:07:25,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:25,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:25,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 15:07:25,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:07:25,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:25,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:25,704 INFO L85 PathProgramCache]: Analyzing trace with hash 213791924, now seen corresponding path program 1 times [2024-11-09 15:07:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:25,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069749267] [2024-11-09 15:07:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:25,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069749267] [2024-11-09 15:07:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069749267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:25,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289819659] [2024-11-09 15:07:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:25,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:25,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-09 15:07:25,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:25,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:25,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-09 15:07:25,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:26,176 INFO L124 PetriNetUnfolderBase]: 1224/3024 cut-off events. [2024-11-09 15:07:26,177 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-09 15:07:26,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4945 conditions, 3024 events. 1224/3024 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 24558 event pairs, 768 based on Foata normal form. 24/2302 useless extension candidates. Maximal degree in co-relation 2504. Up to 943 conditions per place. [2024-11-09 15:07:26,189 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2024-11-09 15:07:26,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 452 flow [2024-11-09 15:07:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-11-09 15:07:26,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-11-09 15:07:26,191 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 220 flow. Second operand 5 states and 290 transitions. [2024-11-09 15:07:26,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 452 flow [2024-11-09 15:07:26,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:07:26,193 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 253 flow [2024-11-09 15:07:26,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-11-09 15:07:26,194 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2024-11-09 15:07:26,194 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 253 flow [2024-11-09 15:07:26,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:26,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:26,195 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:07:26,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:07:26,195 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:26,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1959390980, now seen corresponding path program 1 times [2024-11-09 15:07:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:26,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221310993] [2024-11-09 15:07:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:26,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:26,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221310993] [2024-11-09 15:07:26,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221310993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570302817] [2024-11-09 15:07:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:26,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:26,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:26,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:26,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:07:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:26,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:26,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:26,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:26,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570302817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:26,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:26,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:07:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316105198] [2024-11-09 15:07:26,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:26,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:07:26,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:07:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:07:26,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-09 15:07:26,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:26,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:26,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-09 15:07:26,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:26,726 INFO L124 PetriNetUnfolderBase]: 1040/2654 cut-off events. [2024-11-09 15:07:26,726 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-09 15:07:26,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 2654 events. 1040/2654 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21277 event pairs, 648 based on Foata normal form. 0/2016 useless extension candidates. Maximal degree in co-relation 2203. Up to 1554 conditions per place. [2024-11-09 15:07:26,738 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-11-09 15:07:26,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 465 flow [2024-11-09 15:07:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:07:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:07:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 490 transitions. [2024-11-09 15:07:26,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-09 15:07:26,741 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 253 flow. Second operand 10 states and 490 transitions. [2024-11-09 15:07:26,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 465 flow [2024-11-09 15:07:26,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:26,746 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 415 flow [2024-11-09 15:07:26,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-11-09 15:07:26,748 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-11-09 15:07:26,748 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 415 flow [2024-11-09 15:07:26,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:26,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:26,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:26,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:07:26,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:26,951 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:26,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1962384161, now seen corresponding path program 1 times [2024-11-09 15:07:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393698536] [2024-11-09 15:07:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:27,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:27,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393698536] [2024-11-09 15:07:27,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393698536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:27,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:27,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:07:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004877159] [2024-11-09 15:07:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:27,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:27,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:27,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-09 15:07:27,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:27,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:27,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-09 15:07:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:27,466 INFO L124 PetriNetUnfolderBase]: 2294/5682 cut-off events. [2024-11-09 15:07:27,467 INFO L125 PetriNetUnfolderBase]: For 532/532 co-relation queries the response was YES. [2024-11-09 15:07:27,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9597 conditions, 5682 events. 2294/5682 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51837 event pairs, 1412 based on Foata normal form. 88/4480 useless extension candidates. Maximal degree in co-relation 9500. Up to 1735 conditions per place. [2024-11-09 15:07:27,493 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 111 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-11-09 15:07:27,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 829 flow [2024-11-09 15:07:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-09 15:07:27,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7296511627906976 [2024-11-09 15:07:27,496 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 415 flow. Second operand 4 states and 251 transitions. [2024-11-09 15:07:27,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 829 flow [2024-11-09 15:07:27,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 735 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-09 15:07:27,501 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 388 flow [2024-11-09 15:07:27,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-11-09 15:07:27,501 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-09 15:07:27,502 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 388 flow [2024-11-09 15:07:27,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:27,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:27,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:27,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:07:27,502 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:27,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash 287054113, now seen corresponding path program 1 times [2024-11-09 15:07:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609506822] [2024-11-09 15:07:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:27,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:27,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609506822] [2024-11-09 15:07:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609506822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:27,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488574487] [2024-11-09 15:07:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:27,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:27,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:27,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:27,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:07:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:27,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:27,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:27,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:07:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488574487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:27,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:07:27,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-09 15:07:27,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327522018] [2024-11-09 15:07:27,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:27,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:07:27,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:07:27,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:07:27,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-09 15:07:27,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:27,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:27,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-09 15:07:27,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:27,990 INFO L124 PetriNetUnfolderBase]: 2061/5238 cut-off events. [2024-11-09 15:07:27,991 INFO L125 PetriNetUnfolderBase]: For 508/512 co-relation queries the response was YES. [2024-11-09 15:07:27,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8594 conditions, 5238 events. 2061/5238 cut-off events. For 508/512 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 47388 event pairs, 1290 based on Foata normal form. 78/4059 useless extension candidates. Maximal degree in co-relation 8509. Up to 3126 conditions per place. [2024-11-09 15:07:28,013 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 61 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2024-11-09 15:07:28,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 484 flow [2024-11-09 15:07:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:07:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:07:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-09 15:07:28,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:07:28,016 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 388 flow. Second operand 3 states and 172 transitions. [2024-11-09 15:07:28,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 484 flow [2024-11-09 15:07:28,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 467 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:07:28,018 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 345 flow [2024-11-09 15:07:28,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-09 15:07:28,019 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2024-11-09 15:07:28,019 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 345 flow [2024-11-09 15:07:28,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:28,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:28,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:28,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:07:28,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 15:07:28,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:28,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1709075386, now seen corresponding path program 1 times [2024-11-09 15:07:28,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:28,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933520476] [2024-11-09 15:07:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:28,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933520476] [2024-11-09 15:07:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933520476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:28,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:28,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:28,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151258207] [2024-11-09 15:07:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:28,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:28,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:28,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:28,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-09 15:07:28,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:28,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:28,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-09 15:07:28,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:28,881 INFO L124 PetriNetUnfolderBase]: 4220/9860 cut-off events. [2024-11-09 15:07:28,881 INFO L125 PetriNetUnfolderBase]: For 106/110 co-relation queries the response was YES. [2024-11-09 15:07:28,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16563 conditions, 9860 events. 4220/9860 cut-off events. For 106/110 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 93576 event pairs, 1918 based on Foata normal form. 104/7727 useless extension candidates. Maximal degree in co-relation 16547. Up to 3471 conditions per place. [2024-11-09 15:07:28,924 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 105 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-11-09 15:07:28,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 654 flow [2024-11-09 15:07:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-09 15:07:28,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2024-11-09 15:07:28,926 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 345 flow. Second operand 4 states and 262 transitions. [2024-11-09 15:07:28,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 654 flow [2024-11-09 15:07:28,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:28,930 INFO L231 Difference]: Finished difference. Result has 98 places, 106 transitions, 366 flow [2024-11-09 15:07:28,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=98, PETRI_TRANSITIONS=106} [2024-11-09 15:07:28,932 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-09 15:07:28,932 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 106 transitions, 366 flow [2024-11-09 15:07:28,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:28,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:28,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:28,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:07:28,933 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:28,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:28,933 INFO L85 PathProgramCache]: Analyzing trace with hash 681603450, now seen corresponding path program 1 times [2024-11-09 15:07:28,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:28,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038701911] [2024-11-09 15:07:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:28,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:29,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:29,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038701911] [2024-11-09 15:07:29,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038701911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:29,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266595528] [2024-11-09 15:07:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:29,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:29,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:29,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:29,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:07:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:29,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:07:29,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:29,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:07:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266595528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:29,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:07:29,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-11-09 15:07:29,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948963571] [2024-11-09 15:07:29,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:29,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:07:29,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-09 15:07:29,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 106 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:29,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:29,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-09 15:07:29,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:29,929 INFO L124 PetriNetUnfolderBase]: 3808/9624 cut-off events. [2024-11-09 15:07:29,929 INFO L125 PetriNetUnfolderBase]: For 1148/1180 co-relation queries the response was YES. [2024-11-09 15:07:29,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16439 conditions, 9624 events. 3808/9624 cut-off events. For 1148/1180 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 96184 event pairs, 2428 based on Foata normal form. 118/7639 useless extension candidates. Maximal degree in co-relation 16421. Up to 5751 conditions per place. [2024-11-09 15:07:29,967 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 58 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2024-11-09 15:07:29,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 468 flow [2024-11-09 15:07:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-09 15:07:29,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-09 15:07:29,969 INFO L175 Difference]: Start difference. First operand has 98 places, 106 transitions, 366 flow. Second operand 4 states and 216 transitions. [2024-11-09 15:07:29,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 468 flow [2024-11-09 15:07:29,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 461 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:07:29,972 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 345 flow [2024-11-09 15:07:29,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-11-09 15:07:29,972 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 16 predicate places. [2024-11-09 15:07:29,972 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 345 flow [2024-11-09 15:07:29,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:29,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:29,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:29,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 15:07:30,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:30,247 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:30,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1441729190, now seen corresponding path program 1 times [2024-11-09 15:07:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:30,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744454866] [2024-11-09 15:07:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:30,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:30,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744454866] [2024-11-09 15:07:30,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744454866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:30,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:30,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:30,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321839468] [2024-11-09 15:07:30,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:30,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:30,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-09 15:07:30,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:30,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:30,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-09 15:07:30,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:31,198 INFO L124 PetriNetUnfolderBase]: 6632/14752 cut-off events. [2024-11-09 15:07:31,198 INFO L125 PetriNetUnfolderBase]: For 634/666 co-relation queries the response was YES. [2024-11-09 15:07:31,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25984 conditions, 14752 events. 6632/14752 cut-off events. For 634/666 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 145091 event pairs, 2324 based on Foata normal form. 416/12074 useless extension candidates. Maximal degree in co-relation 25968. Up to 5515 conditions per place. [2024-11-09 15:07:31,273 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 100 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-11-09 15:07:31,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 629 flow [2024-11-09 15:07:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-09 15:07:31,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-11-09 15:07:31,275 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 345 flow. Second operand 4 states and 242 transitions. [2024-11-09 15:07:31,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 629 flow [2024-11-09 15:07:31,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 622 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:31,278 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 372 flow [2024-11-09 15:07:31,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2024-11-09 15:07:31,279 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-09 15:07:31,279 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 372 flow [2024-11-09 15:07:31,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:31,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:31,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:31,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:07:31,280 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:31,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1743932735, now seen corresponding path program 1 times [2024-11-09 15:07:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:31,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365614384] [2024-11-09 15:07:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:31,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:31,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:31,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365614384] [2024-11-09 15:07:31,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365614384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:31,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:31,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:07:31,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669160529] [2024-11-09 15:07:31,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:31,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:31,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:31,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:31,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:31,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-09 15:07:31,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:31,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:31,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-09 15:07:31,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:31,898 INFO L124 PetriNetUnfolderBase]: 2710/7016 cut-off events. [2024-11-09 15:07:31,898 INFO L125 PetriNetUnfolderBase]: For 1438/1526 co-relation queries the response was YES. [2024-11-09 15:07:31,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12867 conditions, 7016 events. 2710/7016 cut-off events. For 1438/1526 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 66147 event pairs, 1668 based on Foata normal form. 56/5737 useless extension candidates. Maximal degree in co-relation 12850. Up to 3531 conditions per place. [2024-11-09 15:07:31,932 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 109 selfloop transitions, 4 changer transitions 6/157 dead transitions. [2024-11-09 15:07:31,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 767 flow [2024-11-09 15:07:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-11-09 15:07:31,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.727906976744186 [2024-11-09 15:07:31,936 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 372 flow. Second operand 5 states and 313 transitions. [2024-11-09 15:07:31,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 767 flow [2024-11-09 15:07:31,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 157 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:07:31,944 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 391 flow [2024-11-09 15:07:31,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2024-11-09 15:07:31,945 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2024-11-09 15:07:31,945 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 391 flow [2024-11-09 15:07:31,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:31,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:31,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:31,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:07:31,946 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:31,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash -926162940, now seen corresponding path program 1 times [2024-11-09 15:07:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:31,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642669933] [2024-11-09 15:07:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:31,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:31,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642669933] [2024-11-09 15:07:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642669933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854702707] [2024-11-09 15:07:31,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:31,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:31,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-09 15:07:32,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:32,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:32,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-09 15:07:32,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:32,921 INFO L124 PetriNetUnfolderBase]: 5248/12540 cut-off events. [2024-11-09 15:07:32,922 INFO L125 PetriNetUnfolderBase]: For 3539/3851 co-relation queries the response was YES. [2024-11-09 15:07:32,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23651 conditions, 12540 events. 5248/12540 cut-off events. For 3539/3851 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 123031 event pairs, 2066 based on Foata normal form. 266/10647 useless extension candidates. Maximal degree in co-relation 23630. Up to 4515 conditions per place. [2024-11-09 15:07:32,997 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 117 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2024-11-09 15:07:32,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 815 flow [2024-11-09 15:07:33,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-11-09 15:07:33,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.752906976744186 [2024-11-09 15:07:33,001 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 391 flow. Second operand 4 states and 259 transitions. [2024-11-09 15:07:33,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 815 flow [2024-11-09 15:07:33,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 810 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:33,014 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 408 flow [2024-11-09 15:07:33,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2024-11-09 15:07:33,015 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2024-11-09 15:07:33,015 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 408 flow [2024-11-09 15:07:33,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:33,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:33,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:33,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:07:33,018 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:33,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:33,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1353721788, now seen corresponding path program 1 times [2024-11-09 15:07:33,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:33,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43485295] [2024-11-09 15:07:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:33,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:33,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43485295] [2024-11-09 15:07:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43485295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:33,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:33,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:07:33,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902191610] [2024-11-09 15:07:33,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:33,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:07:33,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:33,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:07:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:07:33,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-09 15:07:33,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:33,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:33,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-09 15:07:33,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:34,120 INFO L124 PetriNetUnfolderBase]: 8576/18760 cut-off events. [2024-11-09 15:07:34,121 INFO L125 PetriNetUnfolderBase]: For 6704/7080 co-relation queries the response was YES. [2024-11-09 15:07:34,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38473 conditions, 18760 events. 8576/18760 cut-off events. For 6704/7080 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 185993 event pairs, 3382 based on Foata normal form. 656/16975 useless extension candidates. Maximal degree in co-relation 38451. Up to 7339 conditions per place. [2024-11-09 15:07:34,390 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 113 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2024-11-09 15:07:34,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 150 transitions, 812 flow [2024-11-09 15:07:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:07:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:07:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-11-09 15:07:34,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-11-09 15:07:34,394 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 408 flow. Second operand 4 states and 240 transitions. [2024-11-09 15:07:34,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 150 transitions, 812 flow [2024-11-09 15:07:34,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:07:34,434 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 440 flow [2024-11-09 15:07:34,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-11-09 15:07:34,434 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2024-11-09 15:07:34,435 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 440 flow [2024-11-09 15:07:34,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:34,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:34,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:34,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 15:07:34,435 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:34,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:34,436 INFO L85 PathProgramCache]: Analyzing trace with hash -984296695, now seen corresponding path program 1 times [2024-11-09 15:07:34,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:34,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044862138] [2024-11-09 15:07:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:34,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:34,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044862138] [2024-11-09 15:07:34,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044862138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:34,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:07:34,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017684744] [2024-11-09 15:07:34,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:34,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:34,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:34,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:34,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:34,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-09 15:07:34,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 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) [2024-11-09 15:07:34,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:34,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-09 15:07:34,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:35,788 INFO L124 PetriNetUnfolderBase]: 5550/13978 cut-off events. [2024-11-09 15:07:35,788 INFO L125 PetriNetUnfolderBase]: For 6492/6896 co-relation queries the response was YES. [2024-11-09 15:07:35,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29601 conditions, 13978 events. 5550/13978 cut-off events. For 6492/6896 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 146387 event pairs, 3746 based on Foata normal form. 216/12613 useless extension candidates. Maximal degree in co-relation 29577. Up to 7943 conditions per place. [2024-11-09 15:07:35,897 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 77 selfloop transitions, 3 changer transitions 24/142 dead transitions. [2024-11-09 15:07:35,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 770 flow [2024-11-09 15:07:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-09 15:07:35,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6837209302325581 [2024-11-09 15:07:35,899 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 440 flow. Second operand 5 states and 294 transitions. [2024-11-09 15:07:35,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 770 flow [2024-11-09 15:07:35,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 142 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:07:35,959 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 443 flow [2024-11-09 15:07:35,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-11-09 15:07:35,959 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-11-09 15:07:35,960 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 443 flow [2024-11-09 15:07:35,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 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) [2024-11-09 15:07:35,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:35,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:35,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:07:35,961 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:35,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash 201386372, now seen corresponding path program 1 times [2024-11-09 15:07:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225825072] [2024-11-09 15:07:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:35,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:36,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:36,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225825072] [2024-11-09 15:07:36,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225825072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:36,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:36,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:07:36,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597562427] [2024-11-09 15:07:36,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:36,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:36,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:36,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:36,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:36,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-09 15:07:36,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 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) [2024-11-09 15:07:36,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:36,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-09 15:07:36,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:36,794 INFO L124 PetriNetUnfolderBase]: 3144/8019 cut-off events. [2024-11-09 15:07:36,794 INFO L125 PetriNetUnfolderBase]: For 3854/4050 co-relation queries the response was YES. [2024-11-09 15:07:36,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17129 conditions, 8019 events. 3144/8019 cut-off events. For 3854/4050 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 76216 event pairs, 2038 based on Foata normal form. 152/7384 useless extension candidates. Maximal degree in co-relation 17101. Up to 3999 conditions per place. [2024-11-09 15:07:36,849 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 100 selfloop transitions, 8 changer transitions 8/154 dead transitions. [2024-11-09 15:07:36,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 154 transitions, 845 flow [2024-11-09 15:07:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-11-09 15:07:36,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7209302325581395 [2024-11-09 15:07:36,851 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 443 flow. Second operand 5 states and 310 transitions. [2024-11-09 15:07:36,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 154 transitions, 845 flow [2024-11-09 15:07:36,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 154 transitions, 832 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 15:07:36,876 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 463 flow [2024-11-09 15:07:36,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=117, PETRI_TRANSITIONS=109} [2024-11-09 15:07:36,876 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-11-09 15:07:36,877 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 463 flow [2024-11-09 15:07:36,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 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) [2024-11-09 15:07:36,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:36,877 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:07:36,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 15:07:36,877 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:36,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1739977591, now seen corresponding path program 2 times [2024-11-09 15:07:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:36,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113806332] [2024-11-09 15:07:36,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:36,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:36,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113806332] [2024-11-09 15:07:36,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113806332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675534779] [2024-11-09 15:07:36,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:07:36,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:36,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:36,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:36,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:07:37,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:07:37,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:07:37,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:07:37,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:07:37,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:07:37,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675534779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:37,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:37,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:07:37,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18738646] [2024-11-09 15:07:37,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:37,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:07:37,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:37,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:07:37,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:07:37,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-09 15:07:37,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 463 flow. Second operand has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:37,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:37,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-09 15:07:37,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:37,841 INFO L124 PetriNetUnfolderBase]: 3149/8118 cut-off events. [2024-11-09 15:07:37,842 INFO L125 PetriNetUnfolderBase]: For 4224/4418 co-relation queries the response was YES. [2024-11-09 15:07:37,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17311 conditions, 8118 events. 3149/8118 cut-off events. For 4224/4418 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 77431 event pairs, 2189 based on Foata normal form. 102/7316 useless extension candidates. Maximal degree in co-relation 17284. Up to 4659 conditions per place. [2024-11-09 15:07:37,875 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 44 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2024-11-09 15:07:37,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 114 transitions, 641 flow [2024-11-09 15:07:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:07:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:07:37,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1080 transitions. [2024-11-09 15:07:37,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-11-09 15:07:37,880 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 463 flow. Second operand 24 states and 1080 transitions. [2024-11-09 15:07:37,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 114 transitions, 641 flow [2024-11-09 15:07:37,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:07:37,897 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 551 flow [2024-11-09 15:07:37,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=551, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2024-11-09 15:07:37,897 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 60 predicate places. [2024-11-09 15:07:37,897 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 551 flow [2024-11-09 15:07:37,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:37,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:37,898 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:37,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:07:38,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 15:07:38,098 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:38,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1607634418, now seen corresponding path program 1 times [2024-11-09 15:07:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:38,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416252973] [2024-11-09 15:07:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:38,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:38,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:38,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416252973] [2024-11-09 15:07:38,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416252973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:07:38,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:07:38,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 15:07:38,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704598992] [2024-11-09 15:07:38,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:07:38,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:07:38,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:38,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:07:38,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:07:38,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-09 15:07:38,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 551 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:38,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:38,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-09 15:07:38,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:38,647 INFO L124 PetriNetUnfolderBase]: 2784/7046 cut-off events. [2024-11-09 15:07:38,647 INFO L125 PetriNetUnfolderBase]: For 3650/3844 co-relation queries the response was YES. [2024-11-09 15:07:38,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15161 conditions, 7046 events. 2784/7046 cut-off events. For 3650/3844 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65596 event pairs, 1873 based on Foata normal form. 100/6330 useless extension candidates. Maximal degree in co-relation 15131. Up to 4007 conditions per place. [2024-11-09 15:07:38,686 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 68 selfloop transitions, 7 changer transitions 20/132 dead transitions. [2024-11-09 15:07:38,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 794 flow [2024-11-09 15:07:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:07:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:07:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2024-11-09 15:07:38,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6767441860465117 [2024-11-09 15:07:38,689 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 551 flow. Second operand 5 states and 291 transitions. [2024-11-09 15:07:38,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 794 flow [2024-11-09 15:07:38,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 694 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-09 15:07:38,706 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 452 flow [2024-11-09 15:07:38,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-11-09 15:07:38,706 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 54 predicate places. [2024-11-09 15:07:38,706 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 452 flow [2024-11-09 15:07:38,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:38,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:38,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:38,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 15:07:38,707 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:38,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:38,707 INFO L85 PathProgramCache]: Analyzing trace with hash 93826439, now seen corresponding path program 1 times [2024-11-09 15:07:38,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:38,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9826520] [2024-11-09 15:07:38,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:38,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:38,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:38,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9826520] [2024-11-09 15:07:38,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9826520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:38,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874043018] [2024-11-09 15:07:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:38,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:38,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:38,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:38,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:07:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:39,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 15:07:39,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:39,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:07:39,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 15:07:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:39,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:39,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 15:07:39,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-09 15:07:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874043018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:39,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:39,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 15:07:39,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340420257] [2024-11-09 15:07:39,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:39,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:07:39,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:07:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:07:39,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2024-11-09 15:07:39,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 452 flow. Second operand has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:39,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:39,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2024-11-09 15:07:39,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:40,196 INFO L124 PetriNetUnfolderBase]: 3118/7302 cut-off events. [2024-11-09 15:07:40,196 INFO L125 PetriNetUnfolderBase]: For 4109/4404 co-relation queries the response was YES. [2024-11-09 15:07:40,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16243 conditions, 7302 events. 3118/7302 cut-off events. For 4109/4404 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 65717 event pairs, 758 based on Foata normal form. 118/6746 useless extension candidates. Maximal degree in co-relation 16214. Up to 1675 conditions per place. [2024-11-09 15:07:40,241 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 148 selfloop transitions, 25 changer transitions 0/208 dead transitions. [2024-11-09 15:07:40,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 208 transitions, 1167 flow [2024-11-09 15:07:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:07:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:07:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 558 transitions. [2024-11-09 15:07:40,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6488372093023256 [2024-11-09 15:07:40,243 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 452 flow. Second operand 10 states and 558 transitions. [2024-11-09 15:07:40,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 208 transitions, 1167 flow [2024-11-09 15:07:40,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 208 transitions, 1127 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-09 15:07:40,262 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 542 flow [2024-11-09 15:07:40,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=542, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-11-09 15:07:40,263 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 55 predicate places. [2024-11-09 15:07:40,263 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 542 flow [2024-11-09 15:07:40,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:40,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:40,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:40,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:07:40,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:07:40,468 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:40,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1386378654, now seen corresponding path program 1 times [2024-11-09 15:07:40,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:40,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330435236] [2024-11-09 15:07:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:40,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330435236] [2024-11-09 15:07:40,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330435236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001899493] [2024-11-09 15:07:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:40,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:40,670 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:40,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:07:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:40,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 15:07:40,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:40,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:07:40,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 15:07:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:40,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:40,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:07:40,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 15:07:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:40,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001899493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:40,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:40,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 15:07:40,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584474600] [2024-11-09 15:07:40,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:40,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:07:40,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:40,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:07:40,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:07:40,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 86 [2024-11-09 15:07:40,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 542 flow. Second operand has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:40,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:40,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 86 [2024-11-09 15:07:40,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:41,750 INFO L124 PetriNetUnfolderBase]: 3658/8181 cut-off events. [2024-11-09 15:07:41,751 INFO L125 PetriNetUnfolderBase]: For 7001/7290 co-relation queries the response was YES. [2024-11-09 15:07:41,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19323 conditions, 8181 events. 3658/8181 cut-off events. For 7001/7290 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 72281 event pairs, 1177 based on Foata normal form. 176/7395 useless extension candidates. Maximal degree in co-relation 19294. Up to 2109 conditions per place. [2024-11-09 15:07:41,795 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 152 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-11-09 15:07:41,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 209 transitions, 1221 flow [2024-11-09 15:07:41,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:07:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:07:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2024-11-09 15:07:41,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-11-09 15:07:41,797 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 542 flow. Second operand 10 states and 538 transitions. [2024-11-09 15:07:41,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 209 transitions, 1221 flow [2024-11-09 15:07:41,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 209 transitions, 1206 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 15:07:41,817 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 603 flow [2024-11-09 15:07:41,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-11-09 15:07:41,817 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 63 predicate places. [2024-11-09 15:07:41,818 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 603 flow [2024-11-09 15:07:41,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:41,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:41,818 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-09 15:07:41,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:07:42,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 15:07:42,019 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:42,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1527489979, now seen corresponding path program 1 times [2024-11-09 15:07:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:42,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974151651] [2024-11-09 15:07:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:42,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974151651] [2024-11-09 15:07:42,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974151651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:42,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437582183] [2024-11-09 15:07:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:42,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:42,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:42,146 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:42,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:07:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:42,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 15:07:42,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:42,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:42,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437582183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:42,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:42,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-09 15:07:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212085398] [2024-11-09 15:07:42,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:42,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 15:07:42,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 15:07:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-09 15:07:42,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-09 15:07:42,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 603 flow. Second operand has 28 states, 28 states have (on average 43.07142857142857) internal successors, (1206), 28 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:42,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:42,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-09 15:07:42,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:43,103 INFO L124 PetriNetUnfolderBase]: 2852/7473 cut-off events. [2024-11-09 15:07:43,103 INFO L125 PetriNetUnfolderBase]: For 8593/8771 co-relation queries the response was YES. [2024-11-09 15:07:43,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17826 conditions, 7473 events. 2852/7473 cut-off events. For 8593/8771 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 72223 event pairs, 1982 based on Foata normal form. 122/6625 useless extension candidates. Maximal degree in co-relation 17795. Up to 4222 conditions per place. [2024-11-09 15:07:43,148 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 52 selfloop transitions, 72 changer transitions 0/163 dead transitions. [2024-11-09 15:07:43,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 163 transitions, 1131 flow [2024-11-09 15:07:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 15:07:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 15:07:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1209 transitions. [2024-11-09 15:07:43,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5406976744186046 [2024-11-09 15:07:43,151 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 603 flow. Second operand 26 states and 1209 transitions. [2024-11-09 15:07:43,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 163 transitions, 1131 flow [2024-11-09 15:07:43,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1072 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-09 15:07:43,173 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1020 flow [2024-11-09 15:07:43,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1020, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2024-11-09 15:07:43,174 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 88 predicate places. [2024-11-09 15:07:43,174 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1020 flow [2024-11-09 15:07:43,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 43.07142857142857) internal successors, (1206), 28 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:43,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:43,175 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] [2024-11-09 15:07:43,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:07:43,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:43,376 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:43,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1893514927, now seen corresponding path program 1 times [2024-11-09 15:07:43,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:43,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289464255] [2024-11-09 15:07:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:43,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:44,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:44,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289464255] [2024-11-09 15:07:44,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289464255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:44,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070204253] [2024-11-09 15:07:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:44,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:44,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:44,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:44,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:07:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:44,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 15:07:44,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:44,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:07:44,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:07:44,214 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:07:44,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:07:44,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 15:07:44,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 15:07:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:44,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:44,333 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_198) c_~a1~0.base) c_~a1~0.offset) 9223372039002259456)) is different from false [2024-11-09 15:07:44,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:07:44,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-09 15:07:44,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:07:44,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-09 15:07:44,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-09 15:07:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-09 15:07:44,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070204253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:44,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:44,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-11-09 15:07:44,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380303923] [2024-11-09 15:07:44,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:44,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:07:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:07:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=318, Unknown=2, NotChecked=36, Total=420 [2024-11-09 15:07:44,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-09 15:07:44,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 1020 flow. Second operand has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:44,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:44,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-09 15:07:44,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:47,308 INFO L124 PetriNetUnfolderBase]: 11573/20463 cut-off events. [2024-11-09 15:07:47,308 INFO L125 PetriNetUnfolderBase]: For 24601/25981 co-relation queries the response was YES. [2024-11-09 15:07:47,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54589 conditions, 20463 events. 11573/20463 cut-off events. For 24601/25981 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 167599 event pairs, 2686 based on Foata normal form. 600/19079 useless extension candidates. Maximal degree in co-relation 54552. Up to 3021 conditions per place. [2024-11-09 15:07:47,552 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 465 selfloop transitions, 67 changer transitions 16/574 dead transitions. [2024-11-09 15:07:47,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 574 transitions, 4504 flow [2024-11-09 15:07:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:07:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:07:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 915 transitions. [2024-11-09 15:07:47,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4433139534883721 [2024-11-09 15:07:47,555 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 1020 flow. Second operand 24 states and 915 transitions. [2024-11-09 15:07:47,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 574 transitions, 4504 flow [2024-11-09 15:07:47,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 574 transitions, 4043 flow, removed 162 selfloop flow, removed 12 redundant places. [2024-11-09 15:07:47,663 INFO L231 Difference]: Finished difference. Result has 184 places, 197 transitions, 1257 flow [2024-11-09 15:07:47,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1257, PETRI_PLACES=184, PETRI_TRANSITIONS=197} [2024-11-09 15:07:47,663 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 105 predicate places. [2024-11-09 15:07:47,664 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 197 transitions, 1257 flow [2024-11-09 15:07:47,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:47,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:47,664 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:07:47,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 15:07:47,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:47,865 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:47,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash 3439418, now seen corresponding path program 1 times [2024-11-09 15:07:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:47,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217657384] [2024-11-09 15:07:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:07:47,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:47,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217657384] [2024-11-09 15:07:47,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217657384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:47,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189967536] [2024-11-09 15:07:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:47,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:47,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:47,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:47,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:07:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:48,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:07:48,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:48,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:07:48,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189967536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:48,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:48,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-09 15:07:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555396603] [2024-11-09 15:07:48,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:48,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:07:48,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:48,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:07:48,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:07:48,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-09 15:07:48,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 197 transitions, 1257 flow. Second operand has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:48,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:48,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-09 15:07:48,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:50,566 INFO L124 PetriNetUnfolderBase]: 4853/11764 cut-off events. [2024-11-09 15:07:50,567 INFO L125 PetriNetUnfolderBase]: For 17942/18384 co-relation queries the response was YES. [2024-11-09 15:07:50,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30658 conditions, 11764 events. 4853/11764 cut-off events. For 17942/18384 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 116306 event pairs, 1154 based on Foata normal form. 270/10698 useless extension candidates. Maximal degree in co-relation 30616. Up to 2096 conditions per place. [2024-11-09 15:07:50,680 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 330 selfloop transitions, 65 changer transitions 14/448 dead transitions. [2024-11-09 15:07:50,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 448 transitions, 3434 flow [2024-11-09 15:07:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:07:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:07:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 894 transitions. [2024-11-09 15:07:50,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6114911080711354 [2024-11-09 15:07:50,683 INFO L175 Difference]: Start difference. First operand has 184 places, 197 transitions, 1257 flow. Second operand 17 states and 894 transitions. [2024-11-09 15:07:50,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 448 transitions, 3434 flow [2024-11-09 15:07:50,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 3308 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-11-09 15:07:50,755 INFO L231 Difference]: Finished difference. Result has 192 places, 224 transitions, 1590 flow [2024-11-09 15:07:50,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1590, PETRI_PLACES=192, PETRI_TRANSITIONS=224} [2024-11-09 15:07:50,756 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 113 predicate places. [2024-11-09 15:07:50,756 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 224 transitions, 1590 flow [2024-11-09 15:07:50,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:50,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:50,760 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] [2024-11-09 15:07:50,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 15:07:50,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:50,961 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:50,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:50,962 INFO L85 PathProgramCache]: Analyzing trace with hash -28065527, now seen corresponding path program 1 times [2024-11-09 15:07:50,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:50,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665307135] [2024-11-09 15:07:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:50,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:51,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:51,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665307135] [2024-11-09 15:07:51,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665307135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985207747] [2024-11-09 15:07:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:51,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:51,394 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:51,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:07:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:51,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 15:07:51,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:51,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:07:51,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:07:51,542 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:07:51,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:07:51,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:07:51,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 15:07:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:51,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:51,772 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_234 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150| Int)) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150| v_ArrVal_234) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150|) 0)))) is different from false [2024-11-09 15:07:51,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:07:51,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-09 15:07:51,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:07:51,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-09 15:07:51,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-09 15:07:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-09 15:07:51,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985207747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:51,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:51,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-11-09 15:07:51,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652791938] [2024-11-09 15:07:51,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:51,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:07:51,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:51,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:07:51,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=320, Unknown=7, NotChecked=36, Total=420 [2024-11-09 15:07:51,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-09 15:07:51,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 224 transitions, 1590 flow. Second operand has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:51,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:51,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-09 15:07:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:54,508 INFO L124 PetriNetUnfolderBase]: 8564/15865 cut-off events. [2024-11-09 15:07:54,509 INFO L125 PetriNetUnfolderBase]: For 24461/25588 co-relation queries the response was YES. [2024-11-09 15:07:54,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45007 conditions, 15865 events. 8564/15865 cut-off events. For 24461/25588 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 130708 event pairs, 1726 based on Foata normal form. 497/15181 useless extension candidates. Maximal degree in co-relation 44964. Up to 2896 conditions per place. [2024-11-09 15:07:54,588 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 605 selfloop transitions, 71 changer transitions 0/698 dead transitions. [2024-11-09 15:07:54,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 698 transitions, 5410 flow [2024-11-09 15:07:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 15:07:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-09 15:07:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1093 transitions. [2024-11-09 15:07:54,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4236434108527132 [2024-11-09 15:07:54,590 INFO L175 Difference]: Start difference. First operand has 192 places, 224 transitions, 1590 flow. Second operand 30 states and 1093 transitions. [2024-11-09 15:07:54,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 698 transitions, 5410 flow [2024-11-09 15:07:54,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 698 transitions, 5384 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-09 15:07:54,655 INFO L231 Difference]: Finished difference. Result has 219 places, 235 transitions, 1809 flow [2024-11-09 15:07:54,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1809, PETRI_PLACES=219, PETRI_TRANSITIONS=235} [2024-11-09 15:07:54,655 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 140 predicate places. [2024-11-09 15:07:54,656 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 235 transitions, 1809 flow [2024-11-09 15:07:54,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:54,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:54,656 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] [2024-11-09 15:07:54,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 15:07:54,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 15:07:54,860 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:54,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:54,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1430548472, now seen corresponding path program 1 times [2024-11-09 15:07:54,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:54,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233802643] [2024-11-09 15:07:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:55,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233802643] [2024-11-09 15:07:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233802643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319251215] [2024-11-09 15:07:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:55,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:55,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:55,309 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:55,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:07:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:55,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 15:07:55,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:55,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:07:55,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:07:55,431 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:07:55,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:07:55,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:07:55,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 15:07:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:55,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:55,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:07:55,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-09 15:07:55,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:07:55,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-09 15:07:55,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-09 15:07:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:55,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319251215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:55,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:55,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-11-09 15:07:55,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115167726] [2024-11-09 15:07:55,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:55,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 15:07:55,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 15:07:55,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=350, Unknown=4, NotChecked=0, Total=420 [2024-11-09 15:07:56,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-09 15:07:56,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 235 transitions, 1809 flow. Second operand has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:56,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:56,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-09 15:07:56,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:07:58,177 INFO L124 PetriNetUnfolderBase]: 9172/16435 cut-off events. [2024-11-09 15:07:58,178 INFO L125 PetriNetUnfolderBase]: For 37250/37920 co-relation queries the response was YES. [2024-11-09 15:07:58,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49496 conditions, 16435 events. 9172/16435 cut-off events. For 37250/37920 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130172 event pairs, 2758 based on Foata normal form. 294/15585 useless extension candidates. Maximal degree in co-relation 49447. Up to 3417 conditions per place. [2024-11-09 15:07:58,405 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 423 selfloop transitions, 67 changer transitions 0/518 dead transitions. [2024-11-09 15:07:58,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 518 transitions, 4442 flow [2024-11-09 15:07:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 15:07:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 15:07:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 892 transitions. [2024-11-09 15:07:58,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4321705426356589 [2024-11-09 15:07:58,407 INFO L175 Difference]: Start difference. First operand has 219 places, 235 transitions, 1809 flow. Second operand 24 states and 892 transitions. [2024-11-09 15:07:58,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 518 transitions, 4442 flow [2024-11-09 15:07:58,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 518 transitions, 4192 flow, removed 25 selfloop flow, removed 17 redundant places. [2024-11-09 15:07:58,507 INFO L231 Difference]: Finished difference. Result has 229 places, 241 transitions, 1909 flow [2024-11-09 15:07:58,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1909, PETRI_PLACES=229, PETRI_TRANSITIONS=241} [2024-11-09 15:07:58,508 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 150 predicate places. [2024-11-09 15:07:58,509 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 241 transitions, 1909 flow [2024-11-09 15:07:58,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:58,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:07:58,510 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] [2024-11-09 15:07:58,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 15:07:58,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 15:07:58,714 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:07:58,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:07:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash -870030523, now seen corresponding path program 1 times [2024-11-09 15:07:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:07:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046436331] [2024-11-09 15:07:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:58,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:07:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:59,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:07:59,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046436331] [2024-11-09 15:07:59,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046436331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:07:59,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562864629] [2024-11-09 15:07:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:07:59,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:07:59,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:07:59,104 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:07:59,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 15:07:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:07:59,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 15:07:59,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:07:59,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:07:59,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:07:59,216 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:07:59,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:07:59,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 15:07:59,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 15:07:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:59,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:07:59,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:07:59,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-09 15:07:59,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:07:59,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-09 15:07:59,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-09 15:07:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:07:59,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562864629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:07:59,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:07:59,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-11-09 15:07:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692946657] [2024-11-09 15:07:59,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:07:59,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 15:07:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:07:59,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 15:07:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=430, Unknown=8, NotChecked=0, Total=506 [2024-11-09 15:07:59,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-09 15:07:59,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 1909 flow. Second operand has 23 states, 23 states have (on average 25.217391304347824) internal successors, (580), 23 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:07:59,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:07:59,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-09 15:07:59,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:02,557 INFO L124 PetriNetUnfolderBase]: 9256/16029 cut-off events. [2024-11-09 15:08:02,558 INFO L125 PetriNetUnfolderBase]: For 32227/33161 co-relation queries the response was YES. [2024-11-09 15:08:02,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50497 conditions, 16029 events. 9256/16029 cut-off events. For 32227/33161 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 123307 event pairs, 1968 based on Foata normal form. 880/15943 useless extension candidates. Maximal degree in co-relation 50445. Up to 3359 conditions per place. [2024-11-09 15:08:02,676 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 608 selfloop transitions, 77 changer transitions 42/758 dead transitions. [2024-11-09 15:08:02,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 758 transitions, 6344 flow [2024-11-09 15:08:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 15:08:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-09 15:08:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1162 transitions. [2024-11-09 15:08:02,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42223837209302323 [2024-11-09 15:08:02,678 INFO L175 Difference]: Start difference. First operand has 229 places, 241 transitions, 1909 flow. Second operand 32 states and 1162 transitions. [2024-11-09 15:08:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 758 transitions, 6344 flow [2024-11-09 15:08:02,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 758 transitions, 6068 flow, removed 4 selfloop flow, removed 19 redundant places. [2024-11-09 15:08:02,767 INFO L231 Difference]: Finished difference. Result has 247 places, 254 transitions, 2067 flow [2024-11-09 15:08:02,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2067, PETRI_PLACES=247, PETRI_TRANSITIONS=254} [2024-11-09 15:08:02,768 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 168 predicate places. [2024-11-09 15:08:02,768 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 254 transitions, 2067 flow [2024-11-09 15:08:02,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.217391304347824) internal successors, (580), 23 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:02,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:02,769 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] [2024-11-09 15:08:02,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 15:08:02,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 15:08:02,973 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:02,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:02,973 INFO L85 PathProgramCache]: Analyzing trace with hash -253884111, now seen corresponding path program 1 times [2024-11-09 15:08:02,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:02,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513671220] [2024-11-09 15:08:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:02,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:08:03,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:03,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513671220] [2024-11-09 15:08:03,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513671220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:03,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:03,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:08:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142396784] [2024-11-09 15:08:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:03,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:03,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:03,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:08:03,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-09 15:08:03,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 254 transitions, 2067 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:03,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:03,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-09 15:08:03,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:04,222 INFO L124 PetriNetUnfolderBase]: 6281/13695 cut-off events. [2024-11-09 15:08:04,223 INFO L125 PetriNetUnfolderBase]: For 32855/33189 co-relation queries the response was YES. [2024-11-09 15:08:04,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42993 conditions, 13695 events. 6281/13695 cut-off events. For 32855/33189 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 128151 event pairs, 2748 based on Foata normal form. 404/13130 useless extension candidates. Maximal degree in co-relation 42937. Up to 5977 conditions per place. [2024-11-09 15:08:04,346 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 249 selfloop transitions, 14 changer transitions 15/322 dead transitions. [2024-11-09 15:08:04,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 322 transitions, 3048 flow [2024-11-09 15:08:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:04,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-11-09 15:08:04,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.688953488372093 [2024-11-09 15:08:04,347 INFO L175 Difference]: Start difference. First operand has 247 places, 254 transitions, 2067 flow. Second operand 4 states and 237 transitions. [2024-11-09 15:08:04,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 322 transitions, 3048 flow [2024-11-09 15:08:04,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 322 transitions, 2877 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-11-09 15:08:04,475 INFO L231 Difference]: Finished difference. Result has 227 places, 245 transitions, 1853 flow [2024-11-09 15:08:04,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1853, PETRI_PLACES=227, PETRI_TRANSITIONS=245} [2024-11-09 15:08:04,475 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 148 predicate places. [2024-11-09 15:08:04,475 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 245 transitions, 1853 flow [2024-11-09 15:08:04,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:04,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:04,476 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:04,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 15:08:04,476 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:04,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:04,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1367733062, now seen corresponding path program 1 times [2024-11-09 15:08:04,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:04,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403418239] [2024-11-09 15:08:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:08:04,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:04,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403418239] [2024-11-09 15:08:04,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403418239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:04,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713087579] [2024-11-09 15:08:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:04,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:04,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:04,533 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:04,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 15:08:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:04,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:08:04,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:04,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:04,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713087579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:04,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:04,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-09 15:08:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488507491] [2024-11-09 15:08:04,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:04,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 15:08:04,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 15:08:04,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-09 15:08:05,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-09 15:08:05,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 245 transitions, 1853 flow. Second operand has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:05,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:05,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-09 15:08:05,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:06,458 INFO L124 PetriNetUnfolderBase]: 4196/9871 cut-off events. [2024-11-09 15:08:06,459 INFO L125 PetriNetUnfolderBase]: For 22784/23284 co-relation queries the response was YES. [2024-11-09 15:08:06,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29001 conditions, 9871 events. 4196/9871 cut-off events. For 22784/23284 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 91675 event pairs, 132 based on Foata normal form. 208/9192 useless extension candidates. Maximal degree in co-relation 28949. Up to 2104 conditions per place. [2024-11-09 15:08:06,540 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 297 selfloop transitions, 63 changer transitions 44/447 dead transitions. [2024-11-09 15:08:06,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 447 transitions, 3910 flow [2024-11-09 15:08:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 15:08:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 15:08:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 884 transitions. [2024-11-09 15:08:06,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-11-09 15:08:06,541 INFO L175 Difference]: Start difference. First operand has 227 places, 245 transitions, 1853 flow. Second operand 17 states and 884 transitions. [2024-11-09 15:08:06,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 447 transitions, 3910 flow [2024-11-09 15:08:06,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 447 transitions, 3782 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-09 15:08:06,628 INFO L231 Difference]: Finished difference. Result has 233 places, 236 transitions, 1855 flow [2024-11-09 15:08:06,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1855, PETRI_PLACES=233, PETRI_TRANSITIONS=236} [2024-11-09 15:08:06,629 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 154 predicate places. [2024-11-09 15:08:06,629 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 236 transitions, 1855 flow [2024-11-09 15:08:06,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:06,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:06,630 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] [2024-11-09 15:08:06,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 15:08:06,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 15:08:06,830 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:06,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1397329491, now seen corresponding path program 1 times [2024-11-09 15:08:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297723421] [2024-11-09 15:08:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:07,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297723421] [2024-11-09 15:08:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297723421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999835453] [2024-11-09 15:08:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:07,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:07,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:07,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:07,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 15:08:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:07,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 15:08:07,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:07,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:08:07,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 15:08:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:07,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:07,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:08:07,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-09 15:08:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999835453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:07,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 15:08:07,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559737870] [2024-11-09 15:08:07,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:07,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:08:07,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:07,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:08:07,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:08:07,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-11-09 15:08:07,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 236 transitions, 1855 flow. Second operand has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:07,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:07,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-11-09 15:08:07,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:08,801 INFO L124 PetriNetUnfolderBase]: 6240/11678 cut-off events. [2024-11-09 15:08:08,802 INFO L125 PetriNetUnfolderBase]: For 27124/27874 co-relation queries the response was YES. [2024-11-09 15:08:08,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36706 conditions, 11678 events. 6240/11678 cut-off events. For 27124/27874 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 92313 event pairs, 1392 based on Foata normal form. 330/11547 useless extension candidates. Maximal degree in co-relation 36655. Up to 2956 conditions per place. [2024-11-09 15:08:08,888 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 480 selfloop transitions, 62 changer transitions 0/576 dead transitions. [2024-11-09 15:08:08,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 576 transitions, 5133 flow [2024-11-09 15:08:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 15:08:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 15:08:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 718 transitions. [2024-11-09 15:08:08,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5963455149501661 [2024-11-09 15:08:08,890 INFO L175 Difference]: Start difference. First operand has 233 places, 236 transitions, 1855 flow. Second operand 14 states and 718 transitions. [2024-11-09 15:08:08,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 576 transitions, 5133 flow [2024-11-09 15:08:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 576 transitions, 5054 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-09 15:08:08,943 INFO L231 Difference]: Finished difference. Result has 238 places, 240 transitions, 1975 flow [2024-11-09 15:08:08,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1975, PETRI_PLACES=238, PETRI_TRANSITIONS=240} [2024-11-09 15:08:08,944 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-11-09 15:08:08,944 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 1975 flow [2024-11-09 15:08:08,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:08,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:08,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:08,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 15:08:09,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:09,149 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:09,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:09,149 INFO L85 PathProgramCache]: Analyzing trace with hash 367542107, now seen corresponding path program 1 times [2024-11-09 15:08:09,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:09,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476763594] [2024-11-09 15:08:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:09,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476763594] [2024-11-09 15:08:09,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476763594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470457634] [2024-11-09 15:08:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:09,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:09,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:09,343 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:09,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 15:08:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:09,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 15:08:09,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:09,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:08:09,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 15:08:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:09,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:09,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-09 15:08:09,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-09 15:08:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:09,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470457634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:09,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:09,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 15:08:09,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696845405] [2024-11-09 15:08:09,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:09,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 15:08:09,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 15:08:09,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-09 15:08:09,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 86 [2024-11-09 15:08:09,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 240 transitions, 1975 flow. Second operand has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:09,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:09,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 86 [2024-11-09 15:08:09,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:11,166 INFO L124 PetriNetUnfolderBase]: 6006/11460 cut-off events. [2024-11-09 15:08:11,166 INFO L125 PetriNetUnfolderBase]: For 30684/31420 co-relation queries the response was YES. [2024-11-09 15:08:11,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38544 conditions, 11460 events. 6006/11460 cut-off events. For 30684/31420 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 92266 event pairs, 1476 based on Foata normal form. 580/11525 useless extension candidates. Maximal degree in co-relation 38488. Up to 3112 conditions per place. [2024-11-09 15:08:11,275 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 431 selfloop transitions, 64 changer transitions 87/620 dead transitions. [2024-11-09 15:08:11,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 620 transitions, 5627 flow [2024-11-09 15:08:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:08:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:08:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 777 transitions. [2024-11-09 15:08:11,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6023255813953489 [2024-11-09 15:08:11,277 INFO L175 Difference]: Start difference. First operand has 238 places, 240 transitions, 1975 flow. Second operand 15 states and 777 transitions. [2024-11-09 15:08:11,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 620 transitions, 5627 flow [2024-11-09 15:08:11,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 620 transitions, 5535 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-09 15:08:11,375 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 2096 flow [2024-11-09 15:08:11,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2096, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2024-11-09 15:08:11,376 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 171 predicate places. [2024-11-09 15:08:11,376 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 2096 flow [2024-11-09 15:08:11,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:11,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:11,377 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:11,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 15:08:11,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 15:08:11,577 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:11,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:11,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1429778302, now seen corresponding path program 1 times [2024-11-09 15:08:11,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:11,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266341073] [2024-11-09 15:08:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266341073] [2024-11-09 15:08:11,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266341073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045651924] [2024-11-09 15:08:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:11,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:11,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:11,666 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:11,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 15:08:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:11,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:08:11,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:11,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:11,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045651924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:11,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:11,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-09 15:08:11,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774254863] [2024-11-09 15:08:11,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:11,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 15:08:11,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 15:08:11,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:08:12,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-09 15:08:12,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 2096 flow. Second operand has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:12,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:12,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-09 15:08:12,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:13,856 INFO L124 PetriNetUnfolderBase]: 6928/15898 cut-off events. [2024-11-09 15:08:13,856 INFO L125 PetriNetUnfolderBase]: For 46549/47089 co-relation queries the response was YES. [2024-11-09 15:08:13,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54115 conditions, 15898 events. 6928/15898 cut-off events. For 46549/47089 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 157081 event pairs, 3226 based on Foata normal form. 314/15858 useless extension candidates. Maximal degree in co-relation 54055. Up to 6481 conditions per place. [2024-11-09 15:08:13,999 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 222 selfloop transitions, 100 changer transitions 48/418 dead transitions. [2024-11-09 15:08:13,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 418 transitions, 4093 flow [2024-11-09 15:08:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:08:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:08:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 528 transitions. [2024-11-09 15:08:14,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-11-09 15:08:14,000 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 2096 flow. Second operand 10 states and 528 transitions. [2024-11-09 15:08:14,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 418 transitions, 4093 flow [2024-11-09 15:08:14,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 418 transitions, 3890 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-11-09 15:08:14,390 INFO L231 Difference]: Finished difference. Result has 255 places, 253 transitions, 2273 flow [2024-11-09 15:08:14,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2273, PETRI_PLACES=255, PETRI_TRANSITIONS=253} [2024-11-09 15:08:14,391 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 176 predicate places. [2024-11-09 15:08:14,391 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 253 transitions, 2273 flow [2024-11-09 15:08:14,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:14,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:14,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:14,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 15:08:14,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 15:08:14,592 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:14,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash -543778631, now seen corresponding path program 1 times [2024-11-09 15:08:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:14,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123352285] [2024-11-09 15:08:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:14,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:08:14,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:14,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123352285] [2024-11-09 15:08:14,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123352285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:08:14,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:08:14,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:08:14,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903514461] [2024-11-09 15:08:14,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:08:14,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:08:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:08:14,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:08:14,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-09 15:08:14,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 253 transitions, 2273 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:14,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:14,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-09 15:08:14,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:16,729 INFO L124 PetriNetUnfolderBase]: 8890/18351 cut-off events. [2024-11-09 15:08:16,730 INFO L125 PetriNetUnfolderBase]: For 52261/52674 co-relation queries the response was YES. [2024-11-09 15:08:17,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63206 conditions, 18351 events. 8890/18351 cut-off events. For 52261/52674 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 170392 event pairs, 3966 based on Foata normal form. 541/18472 useless extension candidates. Maximal degree in co-relation 63145. Up to 8293 conditions per place. [2024-11-09 15:08:17,049 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 237 selfloop transitions, 10 changer transitions 64/350 dead transitions. [2024-11-09 15:08:17,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 350 transitions, 3655 flow [2024-11-09 15:08:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:08:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:08:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2024-11-09 15:08:17,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6831395348837209 [2024-11-09 15:08:17,050 INFO L175 Difference]: Start difference. First operand has 255 places, 253 transitions, 2273 flow. Second operand 4 states and 235 transitions. [2024-11-09 15:08:17,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 350 transitions, 3655 flow [2024-11-09 15:08:17,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 350 transitions, 3611 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:08:17,268 INFO L231 Difference]: Finished difference. Result has 252 places, 218 transitions, 1892 flow [2024-11-09 15:08:17,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1892, PETRI_PLACES=252, PETRI_TRANSITIONS=218} [2024-11-09 15:08:17,269 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 173 predicate places. [2024-11-09 15:08:17,270 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 1892 flow [2024-11-09 15:08:17,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:17,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:17,270 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:17,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 15:08:17,270 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:17,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash 437382995, now seen corresponding path program 1 times [2024-11-09 15:08:17,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:17,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017231050] [2024-11-09 15:08:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:17,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:17,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:17,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017231050] [2024-11-09 15:08:17,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017231050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:17,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516845278] [2024-11-09 15:08:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:17,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:17,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:17,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:17,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 15:08:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:17,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:08:17,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:17,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:17,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516845278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:17,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-09 15:08:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974178015] [2024-11-09 15:08:17,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:17,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 15:08:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:17,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 15:08:17,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:08:17,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-09 15:08:17,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 218 transitions, 1892 flow. Second operand has 20 states, 20 states have (on average 41.85) internal successors, (837), 20 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:17,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:17,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-09 15:08:17,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:19,334 INFO L124 PetriNetUnfolderBase]: 4480/10286 cut-off events. [2024-11-09 15:08:19,335 INFO L125 PetriNetUnfolderBase]: For 31305/31499 co-relation queries the response was YES. [2024-11-09 15:08:19,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36194 conditions, 10286 events. 4480/10286 cut-off events. For 31305/31499 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 94498 event pairs, 2484 based on Foata normal form. 90/10137 useless extension candidates. Maximal degree in co-relation 36133. Up to 5059 conditions per place. [2024-11-09 15:08:19,396 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 79 selfloop transitions, 92 changer transitions 99/313 dead transitions. [2024-11-09 15:08:19,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 313 transitions, 3048 flow [2024-11-09 15:08:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:08:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:08:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 524 transitions. [2024-11-09 15:08:19,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2024-11-09 15:08:19,398 INFO L175 Difference]: Start difference. First operand has 252 places, 218 transitions, 1892 flow. Second operand 10 states and 524 transitions. [2024-11-09 15:08:19,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 313 transitions, 3048 flow [2024-11-09 15:08:19,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 313 transitions, 3003 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-09 15:08:19,505 INFO L231 Difference]: Finished difference. Result has 237 places, 214 transitions, 1990 flow [2024-11-09 15:08:19,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=237, PETRI_TRANSITIONS=214} [2024-11-09 15:08:19,505 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 158 predicate places. [2024-11-09 15:08:19,505 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 214 transitions, 1990 flow [2024-11-09 15:08:19,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.85) internal successors, (837), 20 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:19,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:19,506 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:19,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 15:08:19,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:19,710 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:19,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash -69811793, now seen corresponding path program 2 times [2024-11-09 15:08:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726463047] [2024-11-09 15:08:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:08:19,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726463047] [2024-11-09 15:08:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726463047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997081439] [2024-11-09 15:08:19,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:08:19,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:19,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:19,758 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:19,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 15:08:19,825 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:08:19,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:08:19,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:08:19,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 15:08:19,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 15:08:19,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997081439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:19,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:19,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-11-09 15:08:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468885971] [2024-11-09 15:08:19,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:19,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 15:08:19,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:19,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 15:08:19,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:08:19,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-09 15:08:19,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 214 transitions, 1990 flow. Second operand has 9 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:19,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:19,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-09 15:08:19,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:21,408 INFO L124 PetriNetUnfolderBase]: 4995/11288 cut-off events. [2024-11-09 15:08:21,408 INFO L125 PetriNetUnfolderBase]: For 29449/29920 co-relation queries the response was YES. [2024-11-09 15:08:21,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38772 conditions, 11288 events. 4995/11288 cut-off events. For 29449/29920 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 104412 event pairs, 899 based on Foata normal form. 359/11599 useless extension candidates. Maximal degree in co-relation 38713. Up to 2264 conditions per place. [2024-11-09 15:08:21,486 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 376 selfloop transitions, 9 changer transitions 0/429 dead transitions. [2024-11-09 15:08:21,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 429 transitions, 4142 flow [2024-11-09 15:08:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:08:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:08:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2024-11-09 15:08:21,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7235142118863049 [2024-11-09 15:08:21,488 INFO L175 Difference]: Start difference. First operand has 237 places, 214 transitions, 1990 flow. Second operand 9 states and 560 transitions. [2024-11-09 15:08:21,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 429 transitions, 4142 flow [2024-11-09 15:08:21,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 429 transitions, 3882 flow, removed 37 selfloop flow, removed 14 redundant places. [2024-11-09 15:08:21,580 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 1816 flow [2024-11-09 15:08:21,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1816, PETRI_PLACES=223, PETRI_TRANSITIONS=216} [2024-11-09 15:08:21,583 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 144 predicate places. [2024-11-09 15:08:21,583 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 1816 flow [2024-11-09 15:08:21,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:21,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:21,584 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:21,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 15:08:21,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:21,784 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:21,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2130770743, now seen corresponding path program 1 times [2024-11-09 15:08:21,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:21,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419634807] [2024-11-09 15:08:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:22,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:22,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419634807] [2024-11-09 15:08:22,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419634807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:22,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149860734] [2024-11-09 15:08:22,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:22,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:22,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:22,196 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:22,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 15:08:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:22,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 15:08:22,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:22,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 15:08:22,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 15:08:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:22,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:22,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 15:08:22,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-09 15:08:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:22,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149860734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:22,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:22,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-09 15:08:22,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209337738] [2024-11-09 15:08:22,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:22,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 15:08:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 15:08:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-09 15:08:22,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-11-09 15:08:22,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 216 transitions, 1816 flow. Second operand has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:22,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:22,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-11-09 15:08:22,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:24,857 INFO L124 PetriNetUnfolderBase]: 5289/11444 cut-off events. [2024-11-09 15:08:24,857 INFO L125 PetriNetUnfolderBase]: For 28803/29346 co-relation queries the response was YES. [2024-11-09 15:08:24,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39188 conditions, 11444 events. 5289/11444 cut-off events. For 28803/29346 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 102498 event pairs, 1403 based on Foata normal form. 345/11523 useless extension candidates. Maximal degree in co-relation 39136. Up to 2338 conditions per place. [2024-11-09 15:08:24,931 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 366 selfloop transitions, 56 changer transitions 30/493 dead transitions. [2024-11-09 15:08:24,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 493 transitions, 4462 flow [2024-11-09 15:08:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 15:08:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 15:08:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 807 transitions. [2024-11-09 15:08:24,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864825581395349 [2024-11-09 15:08:24,933 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 1816 flow. Second operand 16 states and 807 transitions. [2024-11-09 15:08:24,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 493 transitions, 4462 flow [2024-11-09 15:08:25,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 493 transitions, 4448 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:08:25,032 INFO L231 Difference]: Finished difference. Result has 236 places, 223 transitions, 2009 flow [2024-11-09 15:08:25,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2009, PETRI_PLACES=236, PETRI_TRANSITIONS=223} [2024-11-09 15:08:25,033 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 157 predicate places. [2024-11-09 15:08:25,033 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 223 transitions, 2009 flow [2024-11-09 15:08:25,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:25,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:25,034 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:25,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 15:08:25,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:25,238 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:25,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1629352626, now seen corresponding path program 1 times [2024-11-09 15:08:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:25,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59994430] [2024-11-09 15:08:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:08:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:25,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59994430] [2024-11-09 15:08:25,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59994430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:25,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143889611] [2024-11-09 15:08:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:25,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:25,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:25,615 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:25,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 15:08:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:25,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 15:08:25,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:25,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 15:08:25,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 15:08:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:25,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:25,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-09 15:08:25,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-09 15:08:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:08:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143889611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:25,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-09 15:08:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269783574] [2024-11-09 15:08:25,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:25,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 15:08:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 15:08:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-09 15:08:26,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 86 [2024-11-09 15:08:26,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 223 transitions, 2009 flow. Second operand has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:26,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:26,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 86 [2024-11-09 15:08:26,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:28,498 INFO L124 PetriNetUnfolderBase]: 5779/12056 cut-off events. [2024-11-09 15:08:28,498 INFO L125 PetriNetUnfolderBase]: For 36207/36770 co-relation queries the response was YES. [2024-11-09 15:08:28,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42933 conditions, 12056 events. 5779/12056 cut-off events. For 36207/36770 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 105690 event pairs, 1805 based on Foata normal form. 363/12137 useless extension candidates. Maximal degree in co-relation 42877. Up to 2806 conditions per place. [2024-11-09 15:08:28,583 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 353 selfloop transitions, 52 changer transitions 15/459 dead transitions. [2024-11-09 15:08:28,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 459 transitions, 4318 flow [2024-11-09 15:08:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:08:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:08:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 720 transitions. [2024-11-09 15:08:28,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-09 15:08:28,585 INFO L175 Difference]: Start difference. First operand has 236 places, 223 transitions, 2009 flow. Second operand 15 states and 720 transitions. [2024-11-09 15:08:28,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 459 transitions, 4318 flow [2024-11-09 15:08:28,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 459 transitions, 4267 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-09 15:08:28,687 INFO L231 Difference]: Finished difference. Result has 242 places, 223 transitions, 2077 flow [2024-11-09 15:08:28,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2077, PETRI_PLACES=242, PETRI_TRANSITIONS=223} [2024-11-09 15:08:28,688 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 163 predicate places. [2024-11-09 15:08:28,688 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 223 transitions, 2077 flow [2024-11-09 15:08:28,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:28,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:28,689 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:28,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 15:08:28,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-09 15:08:28,893 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:28,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1695140160, now seen corresponding path program 2 times [2024-11-09 15:08:28,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966270197] [2024-11-09 15:08:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:28,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 15:08:29,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:29,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966270197] [2024-11-09 15:08:29,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966270197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:29,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858534793] [2024-11-09 15:08:29,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:08:29,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:29,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:29,108 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:29,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 15:08:29,191 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:08:29,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:08:29,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:08:29,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 15:08:29,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 15:08:29,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858534793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:29,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:29,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-11-09 15:08:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809649154] [2024-11-09 15:08:29,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:29,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 15:08:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 15:08:29,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:08:29,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-09 15:08:29,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 223 transitions, 2077 flow. Second operand has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:29,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:29,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-09 15:08:29,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:31,715 INFO L124 PetriNetUnfolderBase]: 7735/17110 cut-off events. [2024-11-09 15:08:31,715 INFO L125 PetriNetUnfolderBase]: For 60580/62132 co-relation queries the response was YES. [2024-11-09 15:08:31,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59496 conditions, 17110 events. 7735/17110 cut-off events. For 60580/62132 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 165048 event pairs, 531 based on Foata normal form. 756/17485 useless extension candidates. Maximal degree in co-relation 59439. Up to 3474 conditions per place. [2024-11-09 15:08:31,832 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 430 selfloop transitions, 9 changer transitions 0/483 dead transitions. [2024-11-09 15:08:31,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 483 transitions, 5018 flow [2024-11-09 15:08:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:08:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:08:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2024-11-09 15:08:31,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7118863049095607 [2024-11-09 15:08:31,833 INFO L175 Difference]: Start difference. First operand has 242 places, 223 transitions, 2077 flow. Second operand 9 states and 551 transitions. [2024-11-09 15:08:31,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 483 transitions, 5018 flow [2024-11-09 15:08:32,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 483 transitions, 4809 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-09 15:08:32,088 INFO L231 Difference]: Finished difference. Result has 238 places, 225 transitions, 2002 flow [2024-11-09 15:08:32,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2002, PETRI_PLACES=238, PETRI_TRANSITIONS=225} [2024-11-09 15:08:32,089 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-11-09 15:08:32,089 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 225 transitions, 2002 flow [2024-11-09 15:08:32,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:32,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:32,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:32,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 15:08:32,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-09 15:08:32,294 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:32,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1029676359, now seen corresponding path program 1 times [2024-11-09 15:08:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:32,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371763352] [2024-11-09 15:08:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:32,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:32,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:32,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371763352] [2024-11-09 15:08:32,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371763352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:32,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995251031] [2024-11-09 15:08:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:32,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:32,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:32,585 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:32,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 15:08:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:32,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 15:08:32,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:32,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:08:32,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 15:08:32,756 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:08:32,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:08:32,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 15:08:32,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 15:08:32,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 15:08:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:32,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:33,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:08:33,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-09 15:08:33,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:08:33,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2024-11-09 15:08:33,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 15:08:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:33,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995251031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:33,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:33,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-09 15:08:33,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041269415] [2024-11-09 15:08:33,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:33,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 15:08:33,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 15:08:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=886, Unknown=7, NotChecked=0, Total=992 [2024-11-09 15:08:33,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-09 15:08:33,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 225 transitions, 2002 flow. Second operand has 32 states, 32 states have (on average 28.375) internal successors, (908), 32 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:33,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:33,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-09 15:08:33,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:38,269 INFO L124 PetriNetUnfolderBase]: 13055/23272 cut-off events. [2024-11-09 15:08:38,270 INFO L125 PetriNetUnfolderBase]: For 64489/65927 co-relation queries the response was YES. [2024-11-09 15:08:38,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83660 conditions, 23272 events. 13055/23272 cut-off events. For 64489/65927 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 193731 event pairs, 3481 based on Foata normal form. 1008/24162 useless extension candidates. Maximal degree in co-relation 83604. Up to 5316 conditions per place. [2024-11-09 15:08:38,496 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 565 selfloop transitions, 63 changer transitions 30/683 dead transitions. [2024-11-09 15:08:38,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 683 transitions, 6259 flow [2024-11-09 15:08:38,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 15:08:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 15:08:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 969 transitions. [2024-11-09 15:08:38,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45069767441860464 [2024-11-09 15:08:38,498 INFO L175 Difference]: Start difference. First operand has 238 places, 225 transitions, 2002 flow. Second operand 25 states and 969 transitions. [2024-11-09 15:08:38,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 683 transitions, 6259 flow [2024-11-09 15:08:38,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 683 transitions, 6089 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:08:38,871 INFO L231 Difference]: Finished difference. Result has 262 places, 231 transitions, 2194 flow [2024-11-09 15:08:38,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2194, PETRI_PLACES=262, PETRI_TRANSITIONS=231} [2024-11-09 15:08:38,872 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 183 predicate places. [2024-11-09 15:08:38,872 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 231 transitions, 2194 flow [2024-11-09 15:08:38,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 28.375) internal successors, (908), 32 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:38,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:38,873 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:38,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 15:08:39,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:39,074 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:39,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1009770051, now seen corresponding path program 1 times [2024-11-09 15:08:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:39,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119024204] [2024-11-09 15:08:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:39,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:39,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119024204] [2024-11-09 15:08:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119024204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:39,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849292083] [2024-11-09 15:08:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:39,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:39,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:39,327 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:39,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 15:08:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:39,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 15:08:39,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:39,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:08:39,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 15:08:39,480 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:08:39,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:08:39,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:08:39,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:08:39,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 15:08:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:39,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:39,680 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_535 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_535) c_~a1~0.base) (+ c_~a1~0.offset 4)) 9223372039002259456)) is different from false [2024-11-09 15:08:39,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:08:39,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-09 15:08:39,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:08:39,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-11-09 15:08:39,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 15:08:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-09 15:08:39,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849292083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:39,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:39,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-11-09 15:08:39,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706535541] [2024-11-09 15:08:39,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:39,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 15:08:39,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 15:08:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=772, Unknown=1, NotChecked=56, Total=930 [2024-11-09 15:08:39,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-09 15:08:39,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 231 transitions, 2194 flow. Second operand has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:39,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:39,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-09 15:08:39,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:44,035 INFO L124 PetriNetUnfolderBase]: 12663/22030 cut-off events. [2024-11-09 15:08:44,036 INFO L125 PetriNetUnfolderBase]: For 100528/103374 co-relation queries the response was YES. [2024-11-09 15:08:44,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84303 conditions, 22030 events. 12663/22030 cut-off events. For 100528/103374 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 176881 event pairs, 2541 based on Foata normal form. 1098/23093 useless extension candidates. Maximal degree in co-relation 84241. Up to 5156 conditions per place. [2024-11-09 15:08:44,201 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 481 selfloop transitions, 56 changer transitions 40/611 dead transitions. [2024-11-09 15:08:44,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 611 transitions, 6608 flow [2024-11-09 15:08:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:08:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:08:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 833 transitions. [2024-11-09 15:08:44,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-11-09 15:08:44,209 INFO L175 Difference]: Start difference. First operand has 262 places, 231 transitions, 2194 flow. Second operand 21 states and 833 transitions. [2024-11-09 15:08:44,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 611 transitions, 6608 flow [2024-11-09 15:08:44,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 611 transitions, 6296 flow, removed 30 selfloop flow, removed 14 redundant places. [2024-11-09 15:08:44,508 INFO L231 Difference]: Finished difference. Result has 271 places, 238 transitions, 2289 flow [2024-11-09 15:08:44,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2289, PETRI_PLACES=271, PETRI_TRANSITIONS=238} [2024-11-09 15:08:44,510 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 192 predicate places. [2024-11-09 15:08:44,510 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 238 transitions, 2289 flow [2024-11-09 15:08:44,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:44,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:44,511 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:44,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 15:08:44,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:44,712 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:44,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1855195243, now seen corresponding path program 1 times [2024-11-09 15:08:44,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:44,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303413374] [2024-11-09 15:08:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:44,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:08:44,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303413374] [2024-11-09 15:08:44,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303413374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:08:44,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837781508] [2024-11-09 15:08:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:44,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:08:44,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:08:44,993 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:08:44,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 15:08:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:08:45,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 15:08:45,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:08:45,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 15:08:45,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 15:08:45,151 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 15:08:45,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-09 15:08:45,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:08:45,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 15:08:45,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-09 15:08:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:08:45,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:08:45,434 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_173| Int) (v_ArrVal_564 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_173|) 0)) (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_173| v_ArrVal_564) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648))) is different from false [2024-11-09 15:08:45,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:08:45,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-09 15:08:45,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:08:45,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-11-09 15:08:45,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 15:08:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-09 15:08:45,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837781508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:08:45,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:08:45,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-09 15:08:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529862146] [2024-11-09 15:08:45,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:08:45,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 15:08:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:08:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 15:08:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=884, Unknown=11, NotChecked=60, Total=1056 [2024-11-09 15:08:45,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-09 15:08:45,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 238 transitions, 2289 flow. Second operand has 33 states, 33 states have (on average 28.363636363636363) internal successors, (936), 33 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:45,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:08:45,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-09 15:08:45,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:08:50,433 INFO L124 PetriNetUnfolderBase]: 13663/22889 cut-off events. [2024-11-09 15:08:50,434 INFO L125 PetriNetUnfolderBase]: For 88392/90596 co-relation queries the response was YES. [2024-11-09 15:08:50,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89606 conditions, 22889 events. 13663/22889 cut-off events. For 88392/90596 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 178165 event pairs, 3165 based on Foata normal form. 1394/24215 useless extension candidates. Maximal degree in co-relation 89541. Up to 6284 conditions per place. [2024-11-09 15:08:50,655 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 568 selfloop transitions, 60 changer transitions 144/800 dead transitions. [2024-11-09 15:08:50,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 800 transitions, 8156 flow [2024-11-09 15:08:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 15:08:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 15:08:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1006 transitions. [2024-11-09 15:08:50,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44991055456171736 [2024-11-09 15:08:50,658 INFO L175 Difference]: Start difference. First operand has 271 places, 238 transitions, 2289 flow. Second operand 26 states and 1006 transitions. [2024-11-09 15:08:50,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 800 transitions, 8156 flow [2024-11-09 15:08:50,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 800 transitions, 7943 flow, removed 15 selfloop flow, removed 16 redundant places. [2024-11-09 15:08:50,928 INFO L231 Difference]: Finished difference. Result has 284 places, 242 transitions, 2379 flow [2024-11-09 15:08:50,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2379, PETRI_PLACES=284, PETRI_TRANSITIONS=242} [2024-11-09 15:08:50,929 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 205 predicate places. [2024-11-09 15:08:50,929 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 242 transitions, 2379 flow [2024-11-09 15:08:50,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 28.363636363636363) internal successors, (936), 33 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:08:50,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:08:50,929 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:08:50,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 15:08:51,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-09 15:08:51,134 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-09 15:08:51,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:08:51,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1238069574, now seen corresponding path program 1 times [2024-11-09 15:08:51,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:08:51,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764765267] [2024-11-09 15:08:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:08:51,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:08:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat