./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/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-dev-4a390ef-m [2024-10-24 23:37:14,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:37:14,755 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:37:14,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:37:14,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:37:14,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:37:14,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:37:14,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:37:14,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:37:14,797 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:37:14,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:37:14,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:37:14,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:37:14,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:37:14,829 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:37:14,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:37:14,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:37:14,829 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:37:14,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:37:14,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:37:14,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:37:14,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:37:14,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:37:14,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:37:14,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:37:14,834 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:37:14,834 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:37:14,834 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:37:14,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:37:14,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:37:14,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:37:14,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:37:14,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:37:14,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:37:14,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:37:14,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:37:14,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:37:14,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:37:14,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:37:14,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:37:14,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:37:14,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:37:14,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:37:14,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:37:14,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-10-24 23:37:15,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:37:15,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:37:15,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:37:15,153 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:37:15,154 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:37:15,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-10-24 23:37:16,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:37:16,886 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:37:16,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-10-24 23:37:16,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae53aaa7/9a83f0a3152f411dae10cf3f8e720be3/FLAGd528a78d1 [2024-10-24 23:37:17,252 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae53aaa7/9a83f0a3152f411dae10cf3f8e720be3 [2024-10-24 23:37:17,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:37:17,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:37:17,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:37:17,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:37:17,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:37:17,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f38ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17, skipping insertion in model container [2024-10-24 23:37:17,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,295 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:37:17,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:37:17,550 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:37:17,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:37:17,608 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:37:17,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17 WrapperNode [2024-10-24 23:37:17,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:37:17,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:37:17,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:37:17,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:37:17,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,664 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 235 [2024-10-24 23:37:17,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:37:17,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:37:17,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:37:17,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:37:17,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,700 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]. [2024-10-24 23:37:17,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:37:17,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:37:17,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:37:17,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:37:17,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:37:17,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:17,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:37:17,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:37:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:37:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:37:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:37:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:37:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:37:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:37:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:37:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:37:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:37:17,802 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:37:17,934 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:37:17,938 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:37:18,388 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:37:18,389 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:37:18,643 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:37:18,645 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 23:37:18,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:18 BoogieIcfgContainer [2024-10-24 23:37:18,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:37:18,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:37:18,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:37:18,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:37:18,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:37:17" (1/3) ... [2024-10-24 23:37:18,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ffa314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:18, skipping insertion in model container [2024-10-24 23:37:18,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (2/3) ... [2024-10-24 23:37:18,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ffa314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:18, skipping insertion in model container [2024-10-24 23:37:18,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:18" (3/3) ... [2024-10-24 23:37:18,657 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-10-24 23:37:18,673 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:37:18,673 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-24 23:37:18,674 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:37:18,736 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 23:37:18,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-10-24 23:37:18,809 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-10-24 23:37:18,810 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:37:18,814 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. [2024-10-24 23:37:18,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-10-24 23:37:18,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 173 flow [2024-10-24 23:37:18,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:37:18,834 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;@1f44d994, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:37:18,835 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-24 23:37:18,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:37:18,839 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:37:18,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:37:18,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:18,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:37:18,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:18,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash 728004, now seen corresponding path program 1 times [2024-10-24 23:37:18,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:18,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043097140] [2024-10-24 23:37:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:18,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:19,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:19,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043097140] [2024-10-24 23:37:19,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043097140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:19,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:19,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:19,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239335715] [2024-10-24 23:37:19,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:19,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:19,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:19,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-24 23:37:19,226 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) [2024-10-24 23:37:19,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:19,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-24 23:37:19,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:19,518 INFO L124 PetriNetUnfolderBase]: 512/1314 cut-off events. [2024-10-24 23:37:19,518 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-24 23:37:19,524 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. [2024-10-24 23:37:19,534 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 34 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-10-24 23:37:19,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 249 flow [2024-10-24 23:37:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-10-24 23:37:19,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-10-24 23:37:19,548 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 173 flow. Second operand 4 states and 210 transitions. [2024-10-24 23:37:19,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 249 flow [2024-10-24 23:37:19,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:37:19,558 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 176 flow [2024-10-24 23:37:19,562 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} [2024-10-24 23:37:19,566 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-10-24 23:37:19,567 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 176 flow [2024-10-24 23:37:19,567 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) [2024-10-24 23:37:19,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:19,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 23:37:19,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:37:19,568 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:19,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash 22568887, now seen corresponding path program 1 times [2024-10-24 23:37:19,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:19,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45462393] [2024-10-24 23:37:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:19,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:19,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:19,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45462393] [2024-10-24 23:37:19,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45462393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:19,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:19,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152974700] [2024-10-24 23:37:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:19,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:19,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:19,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:19,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-24 23:37:19,678 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) [2024-10-24 23:37:19,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:19,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-24 23:37:19,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:19,943 INFO L124 PetriNetUnfolderBase]: 514/1322 cut-off events. [2024-10-24 23:37:19,943 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 23:37:19,946 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. [2024-10-24 23:37:19,951 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-10-24 23:37:19,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 290 flow [2024-10-24 23:37:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-10-24 23:37:19,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-10-24 23:37:19,955 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 176 flow. Second operand 4 states and 216 transitions. [2024-10-24 23:37:19,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 290 flow [2024-10-24 23:37:19,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:37:19,959 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 220 flow [2024-10-24 23:37:19,959 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} [2024-10-24 23:37:19,960 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-10-24 23:37:19,960 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 220 flow [2024-10-24 23:37:19,961 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) [2024-10-24 23:37:19,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:19,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:37:19,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:37:19,961 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:19,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash 213791924, now seen corresponding path program 1 times [2024-10-24 23:37:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:19,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956599374] [2024-10-24 23:37:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:19,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:20,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:20,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956599374] [2024-10-24 23:37:20,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956599374] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:20,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:20,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:20,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531912993] [2024-10-24 23:37:20,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:20,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:20,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:20,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-24 23:37:20,249 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) [2024-10-24 23:37:20,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:20,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-24 23:37:20,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:20,686 INFO L124 PetriNetUnfolderBase]: 1224/3024 cut-off events. [2024-10-24 23:37:20,687 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-24 23:37:20,693 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. [2024-10-24 23:37:20,707 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2024-10-24 23:37:20,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 452 flow [2024-10-24 23:37:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-10-24 23:37:20,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-10-24 23:37:20,710 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 220 flow. Second operand 5 states and 290 transitions. [2024-10-24 23:37:20,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 452 flow [2024-10-24 23:37:20,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:37:20,717 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 253 flow [2024-10-24 23:37:20,717 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} [2024-10-24 23:37:20,718 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2024-10-24 23:37:20,718 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 253 flow [2024-10-24 23:37:20,719 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) [2024-10-24 23:37:20,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:20,719 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:37:20,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:37:20,719 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:20,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1959390980, now seen corresponding path program 1 times [2024-10-24 23:37:20,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:20,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597489234] [2024-10-24 23:37:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:20,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:20,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597489234] [2024-10-24 23:37:20,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597489234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:20,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587838331] [2024-10-24 23:37:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:20,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:20,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:20,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:20,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:37:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:20,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:20,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:20,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:20,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587838331] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:20,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:20,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-24 23:37:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641989622] [2024-10-24 23:37:20,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:20,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:37:20,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:20,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:37:20,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:37:21,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-24 23:37:21,006 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) [2024-10-24 23:37:21,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:21,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-24 23:37:21,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:21,435 INFO L124 PetriNetUnfolderBase]: 1040/2654 cut-off events. [2024-10-24 23:37:21,435 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-24 23:37:21,440 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. [2024-10-24 23:37:21,451 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-10-24 23:37:21,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 465 flow [2024-10-24 23:37:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:37:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:37:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 490 transitions. [2024-10-24 23:37:21,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-10-24 23:37:21,455 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 253 flow. Second operand 10 states and 490 transitions. [2024-10-24 23:37:21,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 465 flow [2024-10-24 23:37:21,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:21,461 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 415 flow [2024-10-24 23:37:21,463 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} [2024-10-24 23:37:21,464 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-10-24 23:37:21,464 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 415 flow [2024-10-24 23:37:21,465 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) [2024-10-24 23:37:21,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:21,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:21,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:37:21,669 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 [2024-10-24 23:37:21,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:21,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:21,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1962384161, now seen corresponding path program 1 times [2024-10-24 23:37:21,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:21,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304477358] [2024-10-24 23:37:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:21,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:21,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:21,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304477358] [2024-10-24 23:37:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304477358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:21,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503944782] [2024-10-24 23:37:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:21,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:21,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-24 23:37:21,793 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) [2024-10-24 23:37:21,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:21,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-24 23:37:21,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:22,375 INFO L124 PetriNetUnfolderBase]: 2294/5682 cut-off events. [2024-10-24 23:37:22,375 INFO L125 PetriNetUnfolderBase]: For 532/532 co-relation queries the response was YES. [2024-10-24 23:37:22,385 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. [2024-10-24 23:37:22,410 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 111 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-10-24 23:37:22,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 829 flow [2024-10-24 23:37:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:22,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-24 23:37:22,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7296511627906976 [2024-10-24 23:37:22,412 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 415 flow. Second operand 4 states and 251 transitions. [2024-10-24 23:37:22,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 829 flow [2024-10-24 23:37:22,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 735 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-10-24 23:37:22,418 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 388 flow [2024-10-24 23:37:22,418 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} [2024-10-24 23:37:22,419 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-10-24 23:37:22,419 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 388 flow [2024-10-24 23:37:22,419 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) [2024-10-24 23:37:22,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:22,420 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:22,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:37:22,420 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:22,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 287054113, now seen corresponding path program 1 times [2024-10-24 23:37:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:22,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148574384] [2024-10-24 23:37:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148574384] [2024-10-24 23:37:22,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148574384] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209692037] [2024-10-24 23:37:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:22,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:22,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:22,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:22,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:37:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:22,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:22,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:22,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:37:22,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209692037] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:22,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:37:22,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-24 23:37:22,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466570713] [2024-10-24 23:37:22,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:22,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:37:22,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:37:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:37:22,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-24 23:37:22,681 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) [2024-10-24 23:37:22,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:22,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-24 23:37:22,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:23,220 INFO L124 PetriNetUnfolderBase]: 2061/5238 cut-off events. [2024-10-24 23:37:23,220 INFO L125 PetriNetUnfolderBase]: For 508/512 co-relation queries the response was YES. [2024-10-24 23:37:23,231 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. [2024-10-24 23:37:23,263 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 61 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2024-10-24 23:37:23,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 484 flow [2024-10-24 23:37:23,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:37:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:37:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-10-24 23:37:23,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 23:37:23,265 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 388 flow. Second operand 3 states and 172 transitions. [2024-10-24 23:37:23,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 484 flow [2024-10-24 23:37:23,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 467 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-24 23:37:23,271 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 345 flow [2024-10-24 23:37:23,272 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} [2024-10-24 23:37:23,272 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2024-10-24 23:37:23,273 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 345 flow [2024-10-24 23:37:23,273 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) [2024-10-24 23:37:23,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:23,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:23,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:23,473 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 [2024-10-24 23:37:23,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:23,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1709075386, now seen corresponding path program 1 times [2024-10-24 23:37:23,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:23,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024704387] [2024-10-24 23:37:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:23,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:23,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:23,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024704387] [2024-10-24 23:37:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024704387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:23,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:23,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406776100] [2024-10-24 23:37:23,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:23,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:23,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:23,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:23,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-24 23:37:23,535 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) [2024-10-24 23:37:23,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:23,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-24 23:37:23,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:24,368 INFO L124 PetriNetUnfolderBase]: 4220/9860 cut-off events. [2024-10-24 23:37:24,368 INFO L125 PetriNetUnfolderBase]: For 106/110 co-relation queries the response was YES. [2024-10-24 23:37:24,389 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. [2024-10-24 23:37:24,537 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 105 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-10-24 23:37:24,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 654 flow [2024-10-24 23:37:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-10-24 23:37:24,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2024-10-24 23:37:24,540 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 345 flow. Second operand 4 states and 262 transitions. [2024-10-24 23:37:24,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 654 flow [2024-10-24 23:37:24,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:24,544 INFO L231 Difference]: Finished difference. Result has 98 places, 106 transitions, 366 flow [2024-10-24 23:37:24,545 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} [2024-10-24 23:37:24,547 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-10-24 23:37:24,547 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 106 transitions, 366 flow [2024-10-24 23:37:24,548 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) [2024-10-24 23:37:24,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:24,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:24,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:37:24,548 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:24,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash 681603450, now seen corresponding path program 1 times [2024-10-24 23:37:24,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:24,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980139903] [2024-10-24 23:37:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:24,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:24,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:24,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980139903] [2024-10-24 23:37:24,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980139903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927491602] [2024-10-24 23:37:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:24,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:24,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:24,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:24,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:37:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:24,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:24,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:24,855 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:37:24,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927491602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:24,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:37:24,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-10-24 23:37:24,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675073533] [2024-10-24 23:37:24,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:24,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:24,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:24,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:24,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:37:24,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-24 23:37:24,871 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) [2024-10-24 23:37:24,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:24,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-24 23:37:24,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:25,821 INFO L124 PetriNetUnfolderBase]: 3808/9624 cut-off events. [2024-10-24 23:37:25,821 INFO L125 PetriNetUnfolderBase]: For 1148/1180 co-relation queries the response was YES. [2024-10-24 23:37:25,848 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. [2024-10-24 23:37:25,892 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 58 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2024-10-24 23:37:25,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 468 flow [2024-10-24 23:37:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-10-24 23:37:25,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-10-24 23:37:25,894 INFO L175 Difference]: Start difference. First operand has 98 places, 106 transitions, 366 flow. Second operand 4 states and 216 transitions. [2024-10-24 23:37:25,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 468 flow [2024-10-24 23:37:25,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 461 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:37:25,898 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 345 flow [2024-10-24 23:37:25,898 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} [2024-10-24 23:37:25,901 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 16 predicate places. [2024-10-24 23:37:25,902 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 345 flow [2024-10-24 23:37:25,902 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) [2024-10-24 23:37:25,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:25,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:25,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:26,103 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 [2024-10-24 23:37:26,104 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:26,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:26,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1441729190, now seen corresponding path program 1 times [2024-10-24 23:37:26,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:26,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673629022] [2024-10-24 23:37:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:26,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:26,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:26,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673629022] [2024-10-24 23:37:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673629022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:26,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:26,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656517358] [2024-10-24 23:37:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:26,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:26,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-24 23:37:26,216 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) [2024-10-24 23:37:26,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:26,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-24 23:37:26,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:27,256 INFO L124 PetriNetUnfolderBase]: 6632/14752 cut-off events. [2024-10-24 23:37:27,256 INFO L125 PetriNetUnfolderBase]: For 634/666 co-relation queries the response was YES. [2024-10-24 23:37:27,283 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. [2024-10-24 23:37:27,340 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 100 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-10-24 23:37:27,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 629 flow [2024-10-24 23:37:27,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-10-24 23:37:27,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-10-24 23:37:27,342 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 345 flow. Second operand 4 states and 242 transitions. [2024-10-24 23:37:27,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 629 flow [2024-10-24 23:37:27,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 622 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:37:27,346 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 372 flow [2024-10-24 23:37:27,347 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} [2024-10-24 23:37:27,348 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-10-24 23:37:27,348 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 372 flow [2024-10-24 23:37:27,349 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) [2024-10-24 23:37:27,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:27,349 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:27,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:37:27,349 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:27,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:27,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1743932735, now seen corresponding path program 1 times [2024-10-24 23:37:27,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:27,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98634023] [2024-10-24 23:37:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:27,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:27,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98634023] [2024-10-24 23:37:27,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98634023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:27,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:27,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:37:27,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248785993] [2024-10-24 23:37:27,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:27,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:27,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:27,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:27,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:27,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-10-24 23:37:27,478 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) [2024-10-24 23:37:27,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:27,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-10-24 23:37:27,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:28,059 INFO L124 PetriNetUnfolderBase]: 2710/7016 cut-off events. [2024-10-24 23:37:28,060 INFO L125 PetriNetUnfolderBase]: For 1438/1526 co-relation queries the response was YES. [2024-10-24 23:37:28,076 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. [2024-10-24 23:37:28,099 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 109 selfloop transitions, 4 changer transitions 6/157 dead transitions. [2024-10-24 23:37:28,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 767 flow [2024-10-24 23:37:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-10-24 23:37:28,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.727906976744186 [2024-10-24 23:37:28,101 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 372 flow. Second operand 5 states and 313 transitions. [2024-10-24 23:37:28,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 767 flow [2024-10-24 23:37:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 157 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:37:28,110 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 391 flow [2024-10-24 23:37:28,110 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} [2024-10-24 23:37:28,111 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2024-10-24 23:37:28,111 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 391 flow [2024-10-24 23:37:28,111 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) [2024-10-24 23:37:28,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:28,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:28,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:37:28,112 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:28,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash -926162940, now seen corresponding path program 1 times [2024-10-24 23:37:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514516697] [2024-10-24 23:37:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514516697] [2024-10-24 23:37:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514516697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:28,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:28,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433646403] [2024-10-24 23:37:28,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:28,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:28,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:28,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-24 23:37:28,162 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) [2024-10-24 23:37:28,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:28,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-24 23:37:28,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:29,252 INFO L124 PetriNetUnfolderBase]: 5248/12540 cut-off events. [2024-10-24 23:37:29,253 INFO L125 PetriNetUnfolderBase]: For 3539/3851 co-relation queries the response was YES. [2024-10-24 23:37:29,285 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. [2024-10-24 23:37:29,349 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 117 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2024-10-24 23:37:29,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 815 flow [2024-10-24 23:37:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-10-24 23:37:29,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.752906976744186 [2024-10-24 23:37:29,352 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 391 flow. Second operand 4 states and 259 transitions. [2024-10-24 23:37:29,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 815 flow [2024-10-24 23:37:29,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 810 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:37:29,365 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 408 flow [2024-10-24 23:37:29,365 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} [2024-10-24 23:37:29,366 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2024-10-24 23:37:29,366 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 408 flow [2024-10-24 23:37:29,367 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) [2024-10-24 23:37:29,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:29,367 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:29,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:37:29,367 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:29,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1353721788, now seen corresponding path program 1 times [2024-10-24 23:37:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834923841] [2024-10-24 23:37:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:29,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:29,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834923841] [2024-10-24 23:37:29,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834923841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:29,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:29,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:29,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743703788] [2024-10-24 23:37:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:29,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:29,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-24 23:37:29,442 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) [2024-10-24 23:37:29,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:29,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-24 23:37:29,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:30,714 INFO L124 PetriNetUnfolderBase]: 8576/18760 cut-off events. [2024-10-24 23:37:30,714 INFO L125 PetriNetUnfolderBase]: For 6704/7080 co-relation queries the response was YES. [2024-10-24 23:37:30,762 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. [2024-10-24 23:37:30,833 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 113 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2024-10-24 23:37:30,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 150 transitions, 812 flow [2024-10-24 23:37:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-10-24 23:37:30,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-10-24 23:37:30,836 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 408 flow. Second operand 4 states and 240 transitions. [2024-10-24 23:37:30,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 150 transitions, 812 flow [2024-10-24 23:37:30,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:30,905 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 440 flow [2024-10-24 23:37:30,906 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} [2024-10-24 23:37:30,907 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2024-10-24 23:37:30,907 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 440 flow [2024-10-24 23:37:30,908 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) [2024-10-24 23:37:30,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:30,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:30,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 23:37:30,908 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:30,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash -984296695, now seen corresponding path program 1 times [2024-10-24 23:37:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:30,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072560263] [2024-10-24 23:37:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:30,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072560263] [2024-10-24 23:37:31,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072560263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:31,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:31,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:37:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648432374] [2024-10-24 23:37:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:31,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:31,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:31,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-10-24 23:37:31,026 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) [2024-10-24 23:37:31,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:31,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-10-24 23:37:31,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:31,922 INFO L124 PetriNetUnfolderBase]: 5550/13978 cut-off events. [2024-10-24 23:37:31,922 INFO L125 PetriNetUnfolderBase]: For 6492/6896 co-relation queries the response was YES. [2024-10-24 23:37:31,963 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. [2024-10-24 23:37:32,022 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 77 selfloop transitions, 3 changer transitions 24/142 dead transitions. [2024-10-24 23:37:32,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 770 flow [2024-10-24 23:37:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-10-24 23:37:32,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6837209302325581 [2024-10-24 23:37:32,024 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 440 flow. Second operand 5 states and 294 transitions. [2024-10-24 23:37:32,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 770 flow [2024-10-24 23:37:32,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 142 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:37:32,106 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 443 flow [2024-10-24 23:37:32,106 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} [2024-10-24 23:37:32,107 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-10-24 23:37:32,107 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 443 flow [2024-10-24 23:37:32,108 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) [2024-10-24 23:37:32,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:32,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:32,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 23:37:32,109 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:32,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash 201386372, now seen corresponding path program 1 times [2024-10-24 23:37:32,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:32,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790572819] [2024-10-24 23:37:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:32,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790572819] [2024-10-24 23:37:32,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790572819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:32,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:32,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:37:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493869287] [2024-10-24 23:37:32,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:32,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:32,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-10-24 23:37:32,222 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) [2024-10-24 23:37:32,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:32,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-10-24 23:37:32,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:32,832 INFO L124 PetriNetUnfolderBase]: 3144/8019 cut-off events. [2024-10-24 23:37:32,832 INFO L125 PetriNetUnfolderBase]: For 3854/4050 co-relation queries the response was YES. [2024-10-24 23:37:32,849 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. [2024-10-24 23:37:32,872 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 100 selfloop transitions, 8 changer transitions 8/154 dead transitions. [2024-10-24 23:37:32,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 154 transitions, 845 flow [2024-10-24 23:37:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-10-24 23:37:32,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7209302325581395 [2024-10-24 23:37:32,876 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 443 flow. Second operand 5 states and 310 transitions. [2024-10-24 23:37:32,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 154 transitions, 845 flow [2024-10-24 23:37:32,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 154 transitions, 832 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-24 23:37:32,911 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 463 flow [2024-10-24 23:37:32,911 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} [2024-10-24 23:37:32,912 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-10-24 23:37:32,912 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 463 flow [2024-10-24 23:37:32,912 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) [2024-10-24 23:37:32,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:32,913 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:37:32,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 23:37:32,913 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:32,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:32,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1739977591, now seen corresponding path program 2 times [2024-10-24 23:37:32,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:32,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639163159] [2024-10-24 23:37:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:32,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:33,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:33,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639163159] [2024-10-24 23:37:33,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639163159] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:33,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569912323] [2024-10-24 23:37:33,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:37:33,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:33,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:33,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:33,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:37:33,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:37:33,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:37:33,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:37:33,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:37:33,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:37:33,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569912323] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:33,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:33,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:37:33,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742284827] [2024-10-24 23:37:33,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:33,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:37:33,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:37:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:37:33,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-24 23:37:33,238 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) [2024-10-24 23:37:33,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:33,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-24 23:37:33,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:34,032 INFO L124 PetriNetUnfolderBase]: 3149/8118 cut-off events. [2024-10-24 23:37:34,032 INFO L125 PetriNetUnfolderBase]: For 4224/4418 co-relation queries the response was YES. [2024-10-24 23:37:34,053 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. [2024-10-24 23:37:34,073 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 44 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2024-10-24 23:37:34,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 114 transitions, 641 flow [2024-10-24 23:37:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:37:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:37:34,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1080 transitions. [2024-10-24 23:37:34,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-10-24 23:37:34,077 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 463 flow. Second operand 24 states and 1080 transitions. [2024-10-24 23:37:34,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 114 transitions, 641 flow [2024-10-24 23:37:34,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:37:34,101 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 551 flow [2024-10-24 23:37:34,101 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} [2024-10-24 23:37:34,101 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 60 predicate places. [2024-10-24 23:37:34,101 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 551 flow [2024-10-24 23:37:34,102 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) [2024-10-24 23:37:34,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:34,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:34,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:34,306 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 [2024-10-24 23:37:34,307 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:34,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:34,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1607634418, now seen corresponding path program 1 times [2024-10-24 23:37:34,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:34,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132814699] [2024-10-24 23:37:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:34,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:34,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132814699] [2024-10-24 23:37:34,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132814699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:34,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:34,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 23:37:34,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751605299] [2024-10-24 23:37:34,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:34,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:34,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:34,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:34,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-10-24 23:37:34,418 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) [2024-10-24 23:37:34,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:34,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-10-24 23:37:34,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:35,060 INFO L124 PetriNetUnfolderBase]: 2784/7046 cut-off events. [2024-10-24 23:37:35,060 INFO L125 PetriNetUnfolderBase]: For 3650/3844 co-relation queries the response was YES. [2024-10-24 23:37:35,080 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. [2024-10-24 23:37:35,103 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 68 selfloop transitions, 7 changer transitions 20/132 dead transitions. [2024-10-24 23:37:35,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 794 flow [2024-10-24 23:37:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2024-10-24 23:37:35,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6767441860465117 [2024-10-24 23:37:35,105 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 551 flow. Second operand 5 states and 291 transitions. [2024-10-24 23:37:35,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 794 flow [2024-10-24 23:37:35,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 694 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-10-24 23:37:35,127 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 452 flow [2024-10-24 23:37:35,127 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} [2024-10-24 23:37:35,127 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 54 predicate places. [2024-10-24 23:37:35,127 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 452 flow [2024-10-24 23:37:35,128 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) [2024-10-24 23:37:35,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:35,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:35,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 23:37:35,128 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:35,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:35,128 INFO L85 PathProgramCache]: Analyzing trace with hash 93826439, now seen corresponding path program 1 times [2024-10-24 23:37:35,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:35,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177187667] [2024-10-24 23:37:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:35,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:35,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:35,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177187667] [2024-10-24 23:37:35,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177187667] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569803163] [2024-10-24 23:37:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:35,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:35,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:35,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:35,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:37:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:35,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 23:37:35,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:35,604 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 [2024-10-24 23:37:35,665 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 [2024-10-24 23:37:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:35,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:35,745 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 [2024-10-24 23:37:35,750 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 [2024-10-24 23:37:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569803163] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:35,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-24 23:37:35,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135792041] [2024-10-24 23:37:35,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:35,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:37:35,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:37:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:37:35,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2024-10-24 23:37:35,830 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) [2024-10-24 23:37:35,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:35,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2024-10-24 23:37:35,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:37,030 INFO L124 PetriNetUnfolderBase]: 3118/7302 cut-off events. [2024-10-24 23:37:37,031 INFO L125 PetriNetUnfolderBase]: For 4109/4404 co-relation queries the response was YES. [2024-10-24 23:37:37,066 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. [2024-10-24 23:37:37,091 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 148 selfloop transitions, 25 changer transitions 0/208 dead transitions. [2024-10-24 23:37:37,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 208 transitions, 1167 flow [2024-10-24 23:37:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:37:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:37:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 558 transitions. [2024-10-24 23:37:37,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6488372093023256 [2024-10-24 23:37:37,094 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 452 flow. Second operand 10 states and 558 transitions. [2024-10-24 23:37:37,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 208 transitions, 1167 flow [2024-10-24 23:37:37,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 208 transitions, 1127 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-10-24 23:37:37,122 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 542 flow [2024-10-24 23:37:37,122 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} [2024-10-24 23:37:37,123 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 55 predicate places. [2024-10-24 23:37:37,123 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 542 flow [2024-10-24 23:37:37,124 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) [2024-10-24 23:37:37,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:37,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:37,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:37,324 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 [2024-10-24 23:37:37,325 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:37,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:37,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1386378654, now seen corresponding path program 1 times [2024-10-24 23:37:37,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:37,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023650049] [2024-10-24 23:37:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:37,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023650049] [2024-10-24 23:37:37,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023650049] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526302584] [2024-10-24 23:37:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:37,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:37,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:37,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:37,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:37:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:37,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 23:37:37,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:37,647 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 [2024-10-24 23:37:37,705 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 [2024-10-24 23:37:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:37,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:37,787 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 [2024-10-24 23:37:37,790 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 [2024-10-24 23:37:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526302584] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:37,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:37,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-24 23:37:37,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799494474] [2024-10-24 23:37:37,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:37,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:37:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:37,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:37:37,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:37:37,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 86 [2024-10-24 23:37:37,856 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) [2024-10-24 23:37:37,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:37,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 86 [2024-10-24 23:37:37,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:38,811 INFO L124 PetriNetUnfolderBase]: 3658/8181 cut-off events. [2024-10-24 23:37:38,811 INFO L125 PetriNetUnfolderBase]: For 7001/7290 co-relation queries the response was YES. [2024-10-24 23:37:38,826 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. [2024-10-24 23:37:38,843 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 152 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-10-24 23:37:38,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 209 transitions, 1221 flow [2024-10-24 23:37:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:37:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:37:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2024-10-24 23:37:38,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-10-24 23:37:38,846 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 542 flow. Second operand 10 states and 538 transitions. [2024-10-24 23:37:38,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 209 transitions, 1221 flow [2024-10-24 23:37:38,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 209 transitions, 1206 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-24 23:37:38,867 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 603 flow [2024-10-24 23:37:38,867 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} [2024-10-24 23:37:38,867 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 63 predicate places. [2024-10-24 23:37:38,867 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 603 flow [2024-10-24 23:37:38,868 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) [2024-10-24 23:37:38,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:38,868 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:37:38,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:39,068 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 [2024-10-24 23:37:39,069 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:39,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1527489979, now seen corresponding path program 1 times [2024-10-24 23:37:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:39,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445170948] [2024-10-24 23:37:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:39,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445170948] [2024-10-24 23:37:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445170948] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396160496] [2024-10-24 23:37:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:39,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:39,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:39,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:39,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:37:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:39,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:37:39,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:39,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396160496] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:39,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:39,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:37:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572756268] [2024-10-24 23:37:39,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:39,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:37:39,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:39,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:37:39,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:37:39,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-24 23:37:39,601 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) [2024-10-24 23:37:39,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:39,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-24 23:37:39,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:40,391 INFO L124 PetriNetUnfolderBase]: 2852/7473 cut-off events. [2024-10-24 23:37:40,391 INFO L125 PetriNetUnfolderBase]: For 8593/8771 co-relation queries the response was YES. [2024-10-24 23:37:40,413 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. [2024-10-24 23:37:40,433 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 52 selfloop transitions, 72 changer transitions 0/163 dead transitions. [2024-10-24 23:37:40,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 163 transitions, 1131 flow [2024-10-24 23:37:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:37:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:37:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1209 transitions. [2024-10-24 23:37:40,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5406976744186046 [2024-10-24 23:37:40,437 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 603 flow. Second operand 26 states and 1209 transitions. [2024-10-24 23:37:40,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 163 transitions, 1131 flow [2024-10-24 23:37:40,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1072 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-24 23:37:40,474 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1020 flow [2024-10-24 23:37:40,474 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} [2024-10-24 23:37:40,474 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 88 predicate places. [2024-10-24 23:37:40,475 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1020 flow [2024-10-24 23:37:40,475 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) [2024-10-24 23:37:40,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:40,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:40,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 23:37:40,676 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 [2024-10-24 23:37:40,677 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:40,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1893514927, now seen corresponding path program 1 times [2024-10-24 23:37:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:40,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838213131] [2024-10-24 23:37:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:40,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838213131] [2024-10-24 23:37:41,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838213131] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552282309] [2024-10-24 23:37:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:41,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:41,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:41,257 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:41,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:37:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:41,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 23:37:41,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:41,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:37:41,381 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 [2024-10-24 23:37:41,418 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:37:41,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:37:41,447 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 [2024-10-24 23:37:41,503 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 [2024-10-24 23:37:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:41,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:41,586 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 [2024-10-24 23:37:41,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:37:41,658 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 [2024-10-24 23:37:41,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:37:41,666 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 [2024-10-24 23:37:41,671 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 [2024-10-24 23:37:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-24 23:37:41,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552282309] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:41,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:41,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-10-24 23:37:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40994921] [2024-10-24 23:37:41,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:41,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:37:41,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:37:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=318, Unknown=2, NotChecked=36, Total=420 [2024-10-24 23:37:41,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-10-24 23:37:41,733 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) [2024-10-24 23:37:41,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:41,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-10-24 23:37:41,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:44,132 INFO L124 PetriNetUnfolderBase]: 11573/20463 cut-off events. [2024-10-24 23:37:44,133 INFO L125 PetriNetUnfolderBase]: For 24601/25981 co-relation queries the response was YES. [2024-10-24 23:37:44,220 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. [2024-10-24 23:37:44,286 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 465 selfloop transitions, 67 changer transitions 16/574 dead transitions. [2024-10-24 23:37:44,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 574 transitions, 4504 flow [2024-10-24 23:37:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:37:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:37:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 915 transitions. [2024-10-24 23:37:44,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4433139534883721 [2024-10-24 23:37:44,290 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 1020 flow. Second operand 24 states and 915 transitions. [2024-10-24 23:37:44,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 574 transitions, 4504 flow [2024-10-24 23:37:44,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 574 transitions, 4043 flow, removed 162 selfloop flow, removed 12 redundant places. [2024-10-24 23:37:44,429 INFO L231 Difference]: Finished difference. Result has 184 places, 197 transitions, 1257 flow [2024-10-24 23:37:44,429 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} [2024-10-24 23:37:44,430 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 105 predicate places. [2024-10-24 23:37:44,430 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 197 transitions, 1257 flow [2024-10-24 23:37:44,430 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) [2024-10-24 23:37:44,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:44,430 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:44,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 23:37:44,631 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 [2024-10-24 23:37:44,631 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:44,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:44,632 INFO L85 PathProgramCache]: Analyzing trace with hash 3439418, now seen corresponding path program 1 times [2024-10-24 23:37:44,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:44,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657539996] [2024-10-24 23:37:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:44,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:44,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:44,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657539996] [2024-10-24 23:37:44,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657539996] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:44,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396096561] [2024-10-24 23:37:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:44,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:44,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:44,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:44,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 23:37:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:44,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:37:44,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:44,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:45,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396096561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:45,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:45,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-24 23:37:45,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638599429] [2024-10-24 23:37:45,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:45,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 23:37:45,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 23:37:45,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-24 23:37:45,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-24 23:37:45,383 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) [2024-10-24 23:37:45,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:45,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-24 23:37:45,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:46,978 INFO L124 PetriNetUnfolderBase]: 4853/11764 cut-off events. [2024-10-24 23:37:46,978 INFO L125 PetriNetUnfolderBase]: For 17942/18384 co-relation queries the response was YES. [2024-10-24 23:37:47,023 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. [2024-10-24 23:37:47,057 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 330 selfloop transitions, 65 changer transitions 14/448 dead transitions. [2024-10-24 23:37:47,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 448 transitions, 3434 flow [2024-10-24 23:37:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 23:37:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 23:37:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 894 transitions. [2024-10-24 23:37:47,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6114911080711354 [2024-10-24 23:37:47,059 INFO L175 Difference]: Start difference. First operand has 184 places, 197 transitions, 1257 flow. Second operand 17 states and 894 transitions. [2024-10-24 23:37:47,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 448 transitions, 3434 flow [2024-10-24 23:37:47,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 3308 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-10-24 23:37:47,140 INFO L231 Difference]: Finished difference. Result has 192 places, 224 transitions, 1590 flow [2024-10-24 23:37:47,141 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} [2024-10-24 23:37:47,141 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 113 predicate places. [2024-10-24 23:37:47,141 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 224 transitions, 1590 flow [2024-10-24 23:37:47,141 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) [2024-10-24 23:37:47,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:47,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:47,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:47,342 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 [2024-10-24 23:37:47,342 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:47,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:47,343 INFO L85 PathProgramCache]: Analyzing trace with hash -28065527, now seen corresponding path program 1 times [2024-10-24 23:37:47,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:47,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621574851] [2024-10-24 23:37:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:47,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:47,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621574851] [2024-10-24 23:37:47,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621574851] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:47,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379042446] [2024-10-24 23:37:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:47,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:47,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:47,905 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:47,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 23:37:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:47,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 23:37:47,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:47,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:37:48,009 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 [2024-10-24 23:37:48,046 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:37:48,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:37:48,069 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 [2024-10-24 23:37:48,125 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 [2024-10-24 23:37:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:48,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:48,274 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 [2024-10-24 23:37:48,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:37:48,295 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 [2024-10-24 23:37:48,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:37:48,303 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 [2024-10-24 23:37:48,308 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 [2024-10-24 23:37:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-24 23:37:48,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379042446] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:48,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:48,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-10-24 23:37:48,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865942918] [2024-10-24 23:37:48,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:48,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:37:48,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:37:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=320, Unknown=7, NotChecked=36, Total=420 [2024-10-24 23:37:48,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-10-24 23:37:48,435 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) [2024-10-24 23:37:48,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:48,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-10-24 23:37:48,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:51,083 INFO L124 PetriNetUnfolderBase]: 8564/15865 cut-off events. [2024-10-24 23:37:51,083 INFO L125 PetriNetUnfolderBase]: For 24461/25588 co-relation queries the response was YES. [2024-10-24 23:37:51,140 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. [2024-10-24 23:37:51,185 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 605 selfloop transitions, 71 changer transitions 0/698 dead transitions. [2024-10-24 23:37:51,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 698 transitions, 5410 flow [2024-10-24 23:37:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-24 23:37:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-24 23:37:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1093 transitions. [2024-10-24 23:37:51,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4236434108527132 [2024-10-24 23:37:51,188 INFO L175 Difference]: Start difference. First operand has 192 places, 224 transitions, 1590 flow. Second operand 30 states and 1093 transitions. [2024-10-24 23:37:51,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 698 transitions, 5410 flow [2024-10-24 23:37:51,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 698 transitions, 5384 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-10-24 23:37:51,282 INFO L231 Difference]: Finished difference. Result has 219 places, 235 transitions, 1809 flow [2024-10-24 23:37:51,282 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} [2024-10-24 23:37:51,283 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 140 predicate places. [2024-10-24 23:37:51,283 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 235 transitions, 1809 flow [2024-10-24 23:37:51,283 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) [2024-10-24 23:37:51,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:51,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:51,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:51,484 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 [2024-10-24 23:37:51,484 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:51,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1430548472, now seen corresponding path program 1 times [2024-10-24 23:37:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127823598] [2024-10-24 23:37:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:52,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127823598] [2024-10-24 23:37:52,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127823598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365761873] [2024-10-24 23:37:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:52,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:52,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:52,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:52,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 23:37:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:52,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 23:37:52,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:52,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:37:52,148 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 [2024-10-24 23:37:52,180 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:37:52,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:37:52,205 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 [2024-10-24 23:37:52,247 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 [2024-10-24 23:37:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:52,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:52,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:37:52,376 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 [2024-10-24 23:37:52,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:37:52,385 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 [2024-10-24 23:37:52,389 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 [2024-10-24 23:37:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:52,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365761873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:52,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:52,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-10-24 23:37:52,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101307679] [2024-10-24 23:37:52,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:52,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:37:52,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:52,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:37:52,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=350, Unknown=4, NotChecked=0, Total=420 [2024-10-24 23:37:52,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-10-24 23:37:52,818 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) [2024-10-24 23:37:52,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:52,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-10-24 23:37:52,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:54,929 INFO L124 PetriNetUnfolderBase]: 9172/16435 cut-off events. [2024-10-24 23:37:54,929 INFO L125 PetriNetUnfolderBase]: For 37250/37920 co-relation queries the response was YES. [2024-10-24 23:37:54,991 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. [2024-10-24 23:37:55,044 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 423 selfloop transitions, 67 changer transitions 0/518 dead transitions. [2024-10-24 23:37:55,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 518 transitions, 4442 flow [2024-10-24 23:37:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:37:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:37:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 892 transitions. [2024-10-24 23:37:55,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4321705426356589 [2024-10-24 23:37:55,047 INFO L175 Difference]: Start difference. First operand has 219 places, 235 transitions, 1809 flow. Second operand 24 states and 892 transitions. [2024-10-24 23:37:55,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 518 transitions, 4442 flow [2024-10-24 23:37:55,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 518 transitions, 4192 flow, removed 25 selfloop flow, removed 17 redundant places. [2024-10-24 23:37:55,151 INFO L231 Difference]: Finished difference. Result has 229 places, 241 transitions, 1909 flow [2024-10-24 23:37:55,152 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} [2024-10-24 23:37:55,152 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 150 predicate places. [2024-10-24 23:37:55,152 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 241 transitions, 1909 flow [2024-10-24 23:37:55,153 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) [2024-10-24 23:37:55,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:55,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:55,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:55,353 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 [2024-10-24 23:37:55,354 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:55,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:55,354 INFO L85 PathProgramCache]: Analyzing trace with hash -870030523, now seen corresponding path program 1 times [2024-10-24 23:37:55,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:55,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207869039] [2024-10-24 23:37:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:55,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:55,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:55,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207869039] [2024-10-24 23:37:55,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207869039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:55,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090783581] [2024-10-24 23:37:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:55,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:55,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:55,841 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:55,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 23:37:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:55,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 23:37:55,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:55,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:37:55,943 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 [2024-10-24 23:37:55,972 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:37:55,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:37:55,994 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 [2024-10-24 23:37:56,034 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 [2024-10-24 23:37:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:56,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:56,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:37:56,215 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 [2024-10-24 23:37:56,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:37:56,223 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 [2024-10-24 23:37:56,228 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 [2024-10-24 23:37:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:56,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090783581] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:56,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-10-24 23:37:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455691726] [2024-10-24 23:37:56,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:56,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 23:37:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 23:37:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=430, Unknown=8, NotChecked=0, Total=506 [2024-10-24 23:37:56,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-10-24 23:37:56,707 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) [2024-10-24 23:37:56,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:56,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-10-24 23:37:56,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:59,363 INFO L124 PetriNetUnfolderBase]: 9256/16029 cut-off events. [2024-10-24 23:37:59,363 INFO L125 PetriNetUnfolderBase]: For 32227/33161 co-relation queries the response was YES. [2024-10-24 23:37:59,438 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. [2024-10-24 23:37:59,488 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 608 selfloop transitions, 77 changer transitions 42/758 dead transitions. [2024-10-24 23:37:59,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 758 transitions, 6344 flow [2024-10-24 23:37:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-24 23:37:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-24 23:37:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1162 transitions. [2024-10-24 23:37:59,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42223837209302323 [2024-10-24 23:37:59,491 INFO L175 Difference]: Start difference. First operand has 229 places, 241 transitions, 1909 flow. Second operand 32 states and 1162 transitions. [2024-10-24 23:37:59,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 758 transitions, 6344 flow [2024-10-24 23:37:59,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 758 transitions, 6068 flow, removed 4 selfloop flow, removed 19 redundant places. [2024-10-24 23:37:59,608 INFO L231 Difference]: Finished difference. Result has 247 places, 254 transitions, 2067 flow [2024-10-24 23:37:59,608 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} [2024-10-24 23:37:59,609 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 168 predicate places. [2024-10-24 23:37:59,609 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 254 transitions, 2067 flow [2024-10-24 23:37:59,609 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) [2024-10-24 23:37:59,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:59,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:59,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 23:37:59,810 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 [2024-10-24 23:37:59,810 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:37:59,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash -253884111, now seen corresponding path program 1 times [2024-10-24 23:37:59,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:59,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440436882] [2024-10-24 23:37:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:59,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:59,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:59,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440436882] [2024-10-24 23:37:59,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440436882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:59,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:59,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:59,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596201248] [2024-10-24 23:37:59,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:59,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:59,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:59,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:59,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-24 23:37:59,871 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) [2024-10-24 23:37:59,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:59,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-24 23:37:59,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:01,307 INFO L124 PetriNetUnfolderBase]: 6281/13695 cut-off events. [2024-10-24 23:38:01,307 INFO L125 PetriNetUnfolderBase]: For 32855/33189 co-relation queries the response was YES. [2024-10-24 23:38:01,355 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. [2024-10-24 23:38:01,389 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 249 selfloop transitions, 14 changer transitions 15/322 dead transitions. [2024-10-24 23:38:01,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 322 transitions, 3048 flow [2024-10-24 23:38:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:38:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:38:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-10-24 23:38:01,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.688953488372093 [2024-10-24 23:38:01,391 INFO L175 Difference]: Start difference. First operand has 247 places, 254 transitions, 2067 flow. Second operand 4 states and 237 transitions. [2024-10-24 23:38:01,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 322 transitions, 3048 flow [2024-10-24 23:38:01,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 322 transitions, 2877 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-10-24 23:38:01,533 INFO L231 Difference]: Finished difference. Result has 227 places, 245 transitions, 1853 flow [2024-10-24 23:38:01,534 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} [2024-10-24 23:38:01,534 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 148 predicate places. [2024-10-24 23:38:01,534 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 245 transitions, 1853 flow [2024-10-24 23:38:01,534 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) [2024-10-24 23:38:01,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:01,534 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] [2024-10-24 23:38:01,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 23:38:01,535 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:01,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1367733062, now seen corresponding path program 1 times [2024-10-24 23:38:01,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:01,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042638816] [2024-10-24 23:38:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:01,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:38:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042638816] [2024-10-24 23:38:01,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042638816] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276207828] [2024-10-24 23:38:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:01,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:01,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:01,596 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) [2024-10-24 23:38:01,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 23:38:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:01,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:38:01,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:01,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276207828] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:01,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:01,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-24 23:38:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707475098] [2024-10-24 23:38:01,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:01,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 23:38:01,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 23:38:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-24 23:38:02,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-24 23:38:02,242 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) [2024-10-24 23:38:02,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:02,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-24 23:38:02,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:03,599 INFO L124 PetriNetUnfolderBase]: 4196/9871 cut-off events. [2024-10-24 23:38:03,599 INFO L125 PetriNetUnfolderBase]: For 22784/23284 co-relation queries the response was YES. [2024-10-24 23:38:03,644 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. [2024-10-24 23:38:03,672 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 297 selfloop transitions, 63 changer transitions 44/447 dead transitions. [2024-10-24 23:38:03,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 447 transitions, 3910 flow [2024-10-24 23:38:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 23:38:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 23:38:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 884 transitions. [2024-10-24 23:38:03,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-10-24 23:38:03,673 INFO L175 Difference]: Start difference. First operand has 227 places, 245 transitions, 1853 flow. Second operand 17 states and 884 transitions. [2024-10-24 23:38:03,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 447 transitions, 3910 flow [2024-10-24 23:38:03,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 447 transitions, 3782 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-24 23:38:03,771 INFO L231 Difference]: Finished difference. Result has 233 places, 236 transitions, 1855 flow [2024-10-24 23:38:03,771 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} [2024-10-24 23:38:03,771 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 154 predicate places. [2024-10-24 23:38:03,771 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 236 transitions, 1855 flow [2024-10-24 23:38:03,772 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) [2024-10-24 23:38:03,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:03,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:03,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-24 23:38:03,972 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 [2024-10-24 23:38:03,973 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:03,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1397329491, now seen corresponding path program 1 times [2024-10-24 23:38:03,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:03,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051959083] [2024-10-24 23:38:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:03,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:04,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:04,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051959083] [2024-10-24 23:38:04,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051959083] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:04,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620515441] [2024-10-24 23:38:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:04,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:04,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:04,209 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) [2024-10-24 23:38:04,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 23:38:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:04,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 23:38:04,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:04,312 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 [2024-10-24 23:38:04,370 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 [2024-10-24 23:38:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:04,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:04,466 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 [2024-10-24 23:38:04,468 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 [2024-10-24 23:38:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:04,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620515441] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:04,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:04,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-24 23:38:04,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503892611] [2024-10-24 23:38:04,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:04,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 23:38:04,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:04,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 23:38:04,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-24 23:38:04,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-10-24 23:38:04,575 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) [2024-10-24 23:38:04,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:04,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-10-24 23:38:04,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:06,321 INFO L124 PetriNetUnfolderBase]: 6240/11678 cut-off events. [2024-10-24 23:38:06,321 INFO L125 PetriNetUnfolderBase]: For 27124/27874 co-relation queries the response was YES. [2024-10-24 23:38:06,371 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. [2024-10-24 23:38:06,407 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 480 selfloop transitions, 62 changer transitions 0/576 dead transitions. [2024-10-24 23:38:06,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 576 transitions, 5133 flow [2024-10-24 23:38:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:38:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 23:38:06,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 718 transitions. [2024-10-24 23:38:06,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5963455149501661 [2024-10-24 23:38:06,409 INFO L175 Difference]: Start difference. First operand has 233 places, 236 transitions, 1855 flow. Second operand 14 states and 718 transitions. [2024-10-24 23:38:06,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 576 transitions, 5133 flow [2024-10-24 23:38:06,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 576 transitions, 5054 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-24 23:38:06,471 INFO L231 Difference]: Finished difference. Result has 238 places, 240 transitions, 1975 flow [2024-10-24 23:38:06,472 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} [2024-10-24 23:38:06,472 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-10-24 23:38:06,472 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 1975 flow [2024-10-24 23:38:06,472 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) [2024-10-24 23:38:06,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:06,473 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] [2024-10-24 23:38:06,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-24 23:38:06,673 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 [2024-10-24 23:38:06,673 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:06,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:06,674 INFO L85 PathProgramCache]: Analyzing trace with hash 367542107, now seen corresponding path program 1 times [2024-10-24 23:38:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:06,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786653293] [2024-10-24 23:38:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:06,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:06,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786653293] [2024-10-24 23:38:06,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786653293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:06,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984105433] [2024-10-24 23:38:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:06,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:06,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:06,891 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) [2024-10-24 23:38:06,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 23:38:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:06,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 23:38:06,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:06,985 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 [2024-10-24 23:38:07,032 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 [2024-10-24 23:38:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:07,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:07,137 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 [2024-10-24 23:38:07,139 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 [2024-10-24 23:38:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984105433] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:07,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:07,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-24 23:38:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370004827] [2024-10-24 23:38:07,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:07,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 23:38:07,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 23:38:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-10-24 23:38:07,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 86 [2024-10-24 23:38:07,214 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) [2024-10-24 23:38:07,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:07,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 86 [2024-10-24 23:38:07,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:08,648 INFO L124 PetriNetUnfolderBase]: 6006/11460 cut-off events. [2024-10-24 23:38:08,648 INFO L125 PetriNetUnfolderBase]: For 30684/31420 co-relation queries the response was YES. [2024-10-24 23:38:08,702 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. [2024-10-24 23:38:08,735 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 431 selfloop transitions, 64 changer transitions 87/620 dead transitions. [2024-10-24 23:38:08,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 620 transitions, 5627 flow [2024-10-24 23:38:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:38:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:38:08,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 777 transitions. [2024-10-24 23:38:08,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6023255813953489 [2024-10-24 23:38:08,737 INFO L175 Difference]: Start difference. First operand has 238 places, 240 transitions, 1975 flow. Second operand 15 states and 777 transitions. [2024-10-24 23:38:08,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 620 transitions, 5627 flow [2024-10-24 23:38:08,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 620 transitions, 5535 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-10-24 23:38:08,844 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 2096 flow [2024-10-24 23:38:08,844 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} [2024-10-24 23:38:08,845 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 171 predicate places. [2024-10-24 23:38:08,845 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 2096 flow [2024-10-24 23:38:08,845 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) [2024-10-24 23:38:08,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:08,845 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:08,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-24 23:38:09,046 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 [2024-10-24 23:38:09,046 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:09,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1429778302, now seen corresponding path program 1 times [2024-10-24 23:38:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:09,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702890397] [2024-10-24 23:38:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:09,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:09,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702890397] [2024-10-24 23:38:09,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702890397] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:09,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282442119] [2024-10-24 23:38:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:09,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:09,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:09,169 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) [2024-10-24 23:38:09,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 23:38:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:09,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:38:09,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:09,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:09,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282442119] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:09,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:09,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-24 23:38:09,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427806863] [2024-10-24 23:38:09,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:09,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 23:38:09,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:09,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 23:38:09,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:38:09,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-24 23:38:09,661 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) [2024-10-24 23:38:09,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:09,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-24 23:38:09,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:11,384 INFO L124 PetriNetUnfolderBase]: 6928/15898 cut-off events. [2024-10-24 23:38:11,384 INFO L125 PetriNetUnfolderBase]: For 46549/47089 co-relation queries the response was YES. [2024-10-24 23:38:11,484 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. [2024-10-24 23:38:11,525 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 222 selfloop transitions, 100 changer transitions 48/418 dead transitions. [2024-10-24 23:38:11,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 418 transitions, 4093 flow [2024-10-24 23:38:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:38:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:38:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 528 transitions. [2024-10-24 23:38:11,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-10-24 23:38:11,526 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 2096 flow. Second operand 10 states and 528 transitions. [2024-10-24 23:38:11,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 418 transitions, 4093 flow [2024-10-24 23:38:11,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 418 transitions, 3890 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-10-24 23:38:11,776 INFO L231 Difference]: Finished difference. Result has 255 places, 253 transitions, 2273 flow [2024-10-24 23:38:11,777 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} [2024-10-24 23:38:11,777 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 176 predicate places. [2024-10-24 23:38:11,777 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 253 transitions, 2273 flow [2024-10-24 23:38:11,778 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) [2024-10-24 23:38:11,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:11,778 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] [2024-10-24 23:38:11,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-24 23:38:11,979 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 [2024-10-24 23:38:11,979 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:11,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash -543778631, now seen corresponding path program 1 times [2024-10-24 23:38:11,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:11,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613013341] [2024-10-24 23:38:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:11,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:38:12,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:12,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613013341] [2024-10-24 23:38:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613013341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:38:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750155076] [2024-10-24 23:38:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:12,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:38:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:38:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:38:12,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-24 23:38:12,052 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) [2024-10-24 23:38:12,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:12,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-24 23:38:12,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:13,854 INFO L124 PetriNetUnfolderBase]: 8890/18351 cut-off events. [2024-10-24 23:38:13,854 INFO L125 PetriNetUnfolderBase]: For 52261/52674 co-relation queries the response was YES. [2024-10-24 23:38:13,953 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. [2024-10-24 23:38:13,990 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 237 selfloop transitions, 10 changer transitions 64/350 dead transitions. [2024-10-24 23:38:13,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 350 transitions, 3655 flow [2024-10-24 23:38:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:38:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:38:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2024-10-24 23:38:13,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6831395348837209 [2024-10-24 23:38:13,991 INFO L175 Difference]: Start difference. First operand has 255 places, 253 transitions, 2273 flow. Second operand 4 states and 235 transitions. [2024-10-24 23:38:13,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 350 transitions, 3655 flow [2024-10-24 23:38:14,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 350 transitions, 3611 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:38:14,261 INFO L231 Difference]: Finished difference. Result has 252 places, 218 transitions, 1892 flow [2024-10-24 23:38:14,262 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} [2024-10-24 23:38:14,262 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 173 predicate places. [2024-10-24 23:38:14,262 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 1892 flow [2024-10-24 23:38:14,262 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) [2024-10-24 23:38:14,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:14,262 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] [2024-10-24 23:38:14,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-24 23:38:14,263 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:14,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash 437382995, now seen corresponding path program 1 times [2024-10-24 23:38:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:14,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626404976] [2024-10-24 23:38:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:14,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626404976] [2024-10-24 23:38:14,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626404976] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132134817] [2024-10-24 23:38:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:14,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:14,373 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) [2024-10-24 23:38:14,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-24 23:38:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:14,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:38:14,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:14,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132134817] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:14,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-24 23:38:14,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158849602] [2024-10-24 23:38:14,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:14,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 23:38:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 23:38:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:38:14,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-24 23:38:14,820 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) [2024-10-24 23:38:14,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:14,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-24 23:38:14,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:16,007 INFO L124 PetriNetUnfolderBase]: 4480/10286 cut-off events. [2024-10-24 23:38:16,007 INFO L125 PetriNetUnfolderBase]: For 31305/31499 co-relation queries the response was YES. [2024-10-24 23:38:16,060 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. [2024-10-24 23:38:16,083 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 79 selfloop transitions, 92 changer transitions 99/313 dead transitions. [2024-10-24 23:38:16,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 313 transitions, 3048 flow [2024-10-24 23:38:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:38:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:38:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 524 transitions. [2024-10-24 23:38:16,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2024-10-24 23:38:16,084 INFO L175 Difference]: Start difference. First operand has 252 places, 218 transitions, 1892 flow. Second operand 10 states and 524 transitions. [2024-10-24 23:38:16,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 313 transitions, 3048 flow [2024-10-24 23:38:16,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 313 transitions, 3003 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-10-24 23:38:16,223 INFO L231 Difference]: Finished difference. Result has 237 places, 214 transitions, 1990 flow [2024-10-24 23:38:16,224 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} [2024-10-24 23:38:16,224 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 158 predicate places. [2024-10-24 23:38:16,224 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 214 transitions, 1990 flow [2024-10-24 23:38:16,224 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) [2024-10-24 23:38:16,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:16,225 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:16,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-24 23:38:16,425 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 [2024-10-24 23:38:16,425 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:16,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash -69811793, now seen corresponding path program 2 times [2024-10-24 23:38:16,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:16,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333335272] [2024-10-24 23:38:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:16,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:38:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:16,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333335272] [2024-10-24 23:38:16,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333335272] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439304022] [2024-10-24 23:38:16,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:38:16,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:16,517 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) [2024-10-24 23:38:16,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-24 23:38:16,594 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:38:16,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:38:16,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:38:16,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:38:16,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:38:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439304022] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:16,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-10-24 23:38:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229540143] [2024-10-24 23:38:16,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:16,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:38:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:38:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:38:16,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-24 23:38:16,695 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) [2024-10-24 23:38:16,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:16,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-24 23:38:16,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:17,898 INFO L124 PetriNetUnfolderBase]: 4995/11288 cut-off events. [2024-10-24 23:38:17,898 INFO L125 PetriNetUnfolderBase]: For 29449/29920 co-relation queries the response was YES. [2024-10-24 23:38:17,961 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. [2024-10-24 23:38:17,993 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 376 selfloop transitions, 9 changer transitions 0/429 dead transitions. [2024-10-24 23:38:17,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 429 transitions, 4142 flow [2024-10-24 23:38:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 23:38:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 23:38:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2024-10-24 23:38:17,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7235142118863049 [2024-10-24 23:38:17,994 INFO L175 Difference]: Start difference. First operand has 237 places, 214 transitions, 1990 flow. Second operand 9 states and 560 transitions. [2024-10-24 23:38:17,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 429 transitions, 4142 flow [2024-10-24 23:38:18,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 429 transitions, 3882 flow, removed 37 selfloop flow, removed 14 redundant places. [2024-10-24 23:38:18,118 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 1816 flow [2024-10-24 23:38:18,118 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} [2024-10-24 23:38:18,119 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 144 predicate places. [2024-10-24 23:38:18,119 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 1816 flow [2024-10-24 23:38:18,119 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) [2024-10-24 23:38:18,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:18,120 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] [2024-10-24 23:38:18,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-24 23:38:18,320 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 [2024-10-24 23:38:18,320 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:18,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:18,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2130770743, now seen corresponding path program 1 times [2024-10-24 23:38:18,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:18,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764853053] [2024-10-24 23:38:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:18,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:18,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764853053] [2024-10-24 23:38:18,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764853053] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309090675] [2024-10-24 23:38:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:18,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:18,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:18,674 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) [2024-10-24 23:38:18,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-24 23:38:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:18,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-24 23:38:18,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:18,825 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 [2024-10-24 23:38:18,923 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 [2024-10-24 23:38:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:18,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:19,045 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 [2024-10-24 23:38:19,047 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 [2024-10-24 23:38:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:19,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309090675] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:19,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:19,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-10-24 23:38:19,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315591741] [2024-10-24 23:38:19,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:19,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 23:38:19,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:19,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 23:38:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-10-24 23:38:19,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-10-24 23:38:19,253 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) [2024-10-24 23:38:19,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:19,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-10-24 23:38:19,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:21,327 INFO L124 PetriNetUnfolderBase]: 5289/11444 cut-off events. [2024-10-24 23:38:21,327 INFO L125 PetriNetUnfolderBase]: For 28803/29346 co-relation queries the response was YES. [2024-10-24 23:38:21,364 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. [2024-10-24 23:38:21,392 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 366 selfloop transitions, 56 changer transitions 30/493 dead transitions. [2024-10-24 23:38:21,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 493 transitions, 4462 flow [2024-10-24 23:38:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 23:38:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 23:38:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 807 transitions. [2024-10-24 23:38:21,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864825581395349 [2024-10-24 23:38:21,393 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 1816 flow. Second operand 16 states and 807 transitions. [2024-10-24 23:38:21,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 493 transitions, 4462 flow [2024-10-24 23:38:21,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 493 transitions, 4448 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:38:21,489 INFO L231 Difference]: Finished difference. Result has 236 places, 223 transitions, 2009 flow [2024-10-24 23:38:21,489 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} [2024-10-24 23:38:21,489 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 157 predicate places. [2024-10-24 23:38:21,489 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 223 transitions, 2009 flow [2024-10-24 23:38:21,490 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) [2024-10-24 23:38:21,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:21,490 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] [2024-10-24 23:38:21,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-24 23:38:21,690 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 [2024-10-24 23:38:21,691 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:21,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:21,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1629352626, now seen corresponding path program 1 times [2024-10-24 23:38:21,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:21,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370637462] [2024-10-24 23:38:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:21,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:22,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:22,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370637462] [2024-10-24 23:38:22,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370637462] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:22,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668387240] [2024-10-24 23:38:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:22,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:22,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:22,046 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) [2024-10-24 23:38:22,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-24 23:38:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:22,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-24 23:38:22,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:22,178 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 [2024-10-24 23:38:22,259 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 [2024-10-24 23:38:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:22,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:22,360 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 [2024-10-24 23:38:22,363 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 [2024-10-24 23:38:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:38:22,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668387240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:22,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:22,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-10-24 23:38:22,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290588237] [2024-10-24 23:38:22,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:22,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 23:38:22,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 23:38:22,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-10-24 23:38:22,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 86 [2024-10-24 23:38:22,547 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) [2024-10-24 23:38:22,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:22,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 86 [2024-10-24 23:38:22,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:24,387 INFO L124 PetriNetUnfolderBase]: 5779/12056 cut-off events. [2024-10-24 23:38:24,387 INFO L125 PetriNetUnfolderBase]: For 36207/36770 co-relation queries the response was YES. [2024-10-24 23:38:24,453 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. [2024-10-24 23:38:24,493 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 353 selfloop transitions, 52 changer transitions 15/459 dead transitions. [2024-10-24 23:38:24,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 459 transitions, 4318 flow [2024-10-24 23:38:24,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 23:38:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-24 23:38:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 720 transitions. [2024-10-24 23:38:24,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-10-24 23:38:24,495 INFO L175 Difference]: Start difference. First operand has 236 places, 223 transitions, 2009 flow. Second operand 15 states and 720 transitions. [2024-10-24 23:38:24,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 459 transitions, 4318 flow [2024-10-24 23:38:24,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 459 transitions, 4267 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-10-24 23:38:24,626 INFO L231 Difference]: Finished difference. Result has 242 places, 223 transitions, 2077 flow [2024-10-24 23:38:24,626 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} [2024-10-24 23:38:24,627 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 163 predicate places. [2024-10-24 23:38:24,627 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 223 transitions, 2077 flow [2024-10-24 23:38:24,627 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) [2024-10-24 23:38:24,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:24,627 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] [2024-10-24 23:38:24,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-24 23:38:24,828 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 [2024-10-24 23:38:24,828 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:24,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1695140160, now seen corresponding path program 2 times [2024-10-24 23:38:24,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:24,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398209357] [2024-10-24 23:38:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:24,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 23:38:24,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:24,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398209357] [2024-10-24 23:38:24,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398209357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:24,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892960091] [2024-10-24 23:38:24,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:38:24,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:24,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:24,909 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) [2024-10-24 23:38:24,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-24 23:38:25,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:38:25,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:38:25,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:38:25,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:38:25,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:38:25,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892960091] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:25,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:25,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-10-24 23:38:25,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017143453] [2024-10-24 23:38:25,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:25,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 23:38:25,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:25,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:38:25,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:38:25,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-24 23:38:25,138 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) [2024-10-24 23:38:25,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:25,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-24 23:38:25,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:27,004 INFO L124 PetriNetUnfolderBase]: 7735/17110 cut-off events. [2024-10-24 23:38:27,004 INFO L125 PetriNetUnfolderBase]: For 60580/62132 co-relation queries the response was YES. [2024-10-24 23:38:27,127 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. [2024-10-24 23:38:27,181 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 430 selfloop transitions, 9 changer transitions 0/483 dead transitions. [2024-10-24 23:38:27,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 483 transitions, 5018 flow [2024-10-24 23:38:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 23:38:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 23:38:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2024-10-24 23:38:27,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7118863049095607 [2024-10-24 23:38:27,183 INFO L175 Difference]: Start difference. First operand has 242 places, 223 transitions, 2077 flow. Second operand 9 states and 551 transitions. [2024-10-24 23:38:27,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 483 transitions, 5018 flow [2024-10-24 23:38:27,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 483 transitions, 4809 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-24 23:38:27,558 INFO L231 Difference]: Finished difference. Result has 238 places, 225 transitions, 2002 flow [2024-10-24 23:38:27,559 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} [2024-10-24 23:38:27,559 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-10-24 23:38:27,559 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 225 transitions, 2002 flow [2024-10-24 23:38:27,559 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) [2024-10-24 23:38:27,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:27,560 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] [2024-10-24 23:38:27,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-24 23:38:27,760 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 [2024-10-24 23:38:27,760 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:27,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:27,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1029676359, now seen corresponding path program 1 times [2024-10-24 23:38:27,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:27,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345484156] [2024-10-24 23:38:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:27,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:28,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345484156] [2024-10-24 23:38:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345484156] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899626559] [2024-10-24 23:38:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:28,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:28,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:28,135 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) [2024-10-24 23:38:28,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-24 23:38:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:28,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 23:38:28,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:28,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:38:28,289 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 [2024-10-24 23:38:28,313 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:38:28,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:38:28,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-24 23:38:28,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-24 23:38:28,441 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 [2024-10-24 23:38:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:28,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:28,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:38:28,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-24 23:38:28,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:38:28,672 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 [2024-10-24 23:38:28,675 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 [2024-10-24 23:38:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899626559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:28,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:28,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-24 23:38:28,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988123811] [2024-10-24 23:38:28,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:28,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-24 23:38:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-24 23:38:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=886, Unknown=7, NotChecked=0, Total=992 [2024-10-24 23:38:29,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-10-24 23:38:29,113 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) [2024-10-24 23:38:29,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:29,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-10-24 23:38:29,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:33,032 INFO L124 PetriNetUnfolderBase]: 13055/23272 cut-off events. [2024-10-24 23:38:33,032 INFO L125 PetriNetUnfolderBase]: For 64489/65927 co-relation queries the response was YES. [2024-10-24 23:38:33,297 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. [2024-10-24 23:38:33,376 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 565 selfloop transitions, 63 changer transitions 30/683 dead transitions. [2024-10-24 23:38:33,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 683 transitions, 6259 flow [2024-10-24 23:38:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 23:38:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-24 23:38:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 969 transitions. [2024-10-24 23:38:33,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45069767441860464 [2024-10-24 23:38:33,378 INFO L175 Difference]: Start difference. First operand has 238 places, 225 transitions, 2002 flow. Second operand 25 states and 969 transitions. [2024-10-24 23:38:33,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 683 transitions, 6259 flow [2024-10-24 23:38:33,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 683 transitions, 6089 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:38:33,689 INFO L231 Difference]: Finished difference. Result has 262 places, 231 transitions, 2194 flow [2024-10-24 23:38:33,689 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} [2024-10-24 23:38:33,689 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 183 predicate places. [2024-10-24 23:38:33,690 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 231 transitions, 2194 flow [2024-10-24 23:38:33,690 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) [2024-10-24 23:38:33,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:33,690 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] [2024-10-24 23:38:33,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-24 23:38:33,890 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 [2024-10-24 23:38:33,891 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-24 23:38:33,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1009770051, now seen corresponding path program 1 times [2024-10-24 23:38:33,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:33,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160761125] [2024-10-24 23:38:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:33,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:34,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:34,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160761125] [2024-10-24 23:38:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160761125] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:38:34,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008958619] [2024-10-24 23:38:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:34,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:38:34,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:34,213 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) [2024-10-24 23:38:34,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-24 23:38:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:34,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-24 23:38:34,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:38:34,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 23:38:34,382 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 [2024-10-24 23:38:34,413 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 23:38:34,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-24 23:38:34,433 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 [2024-10-24 23:38:34,446 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 [2024-10-24 23:38:34,543 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 [2024-10-24 23:38:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:38:34,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:38:34,655 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 [2024-10-24 23:38:34,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:38:34,697 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 [2024-10-24 23:38:34,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:38:34,703 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 [2024-10-24 23:38:34,706 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 [2024-10-24 23:38:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-10-24 23:38:34,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008958619] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:38:34,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:38:34,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-10-24 23:38:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060701533] [2024-10-24 23:38:34,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:38:34,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 23:38:34,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 23:38:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=772, Unknown=1, NotChecked=56, Total=930 [2024-10-24 23:38:34,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-10-24 23:38:34,828 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) [2024-10-24 23:38:34,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:34,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-10-24 23:38:34,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand