./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-simple-array-sum.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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:48:08,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:48:08,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:48:08,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:48:08,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:48:08,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:48:08,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:48:08,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:48:08,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:48:08,544 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:48:08,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:48:08,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:48:08,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:48:08,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:48:08,548 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:48:08,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:48:08,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:48:08,549 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:48:08,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:48:08,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:48:08,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:48:08,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:48:08,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:48:08,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:48:08,554 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:48:08,554 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:48:08,554 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:48:08,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:48:08,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:48:08,555 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:48:08,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:48:08,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:48:08,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:48:08,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:48:08,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:48:08,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:48:08,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:48:08,558 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:48:08,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:48:08,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:48:08,559 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:48:08,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:48:08,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:48:08,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:48:08,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-12 20:48:08,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:48:08,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:48:08,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:48:08,807 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:48:08,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:48:08,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-12 20:48:10,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:48:10,468 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:48:10,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-12 20:48:10,482 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fad0f5360/40cfebc0e83846e786e1ecaad8bd4435/FLAG5137ff944 [2024-11-12 20:48:10,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fad0f5360/40cfebc0e83846e786e1ecaad8bd4435 [2024-11-12 20:48:10,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:48:10,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:48:10,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:48:10,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:48:10,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:48:10,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8616dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10, skipping insertion in model container [2024-11-12 20:48:10,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,539 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:48:10,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:48:10,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:48:10,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:48:10,837 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:48:10,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10 WrapperNode [2024-11-12 20:48:10,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:48:10,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:48:10,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:48:10,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:48:10,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,873 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 115 [2024-11-12 20:48:10,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:48:10,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:48:10,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:48:10,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:48:10,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,914 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-12 20:48:10,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:48:10,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:48:10,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:48:10,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:48:10,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (1/1) ... [2024-11-12 20:48:10,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:48:10,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:10,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:48:10,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:48:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:48:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:48:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:48:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:48:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:48:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:48:11,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:48:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:48:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:48:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:48:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:48:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:48:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:48:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:48:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:48:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:48:11,039 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:48:11,170 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:48:11,176 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:48:11,496 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:48:11,497 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:48:11,724 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:48:11,725 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-12 20:48:11,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:48:11 BoogieIcfgContainer [2024-11-12 20:48:11,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:48:11,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:48:11,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:48:11,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:48:11,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:48:10" (1/3) ... [2024-11-12 20:48:11,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b56ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:48:11, skipping insertion in model container [2024-11-12 20:48:11,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:10" (2/3) ... [2024-11-12 20:48:11,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b56ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:48:11, skipping insertion in model container [2024-11-12 20:48:11,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:48:11" (3/3) ... [2024-11-12 20:48:11,737 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-12 20:48:11,771 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:48:11,771 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-12 20:48:11,771 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:48:11,886 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:48:11,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 139 flow [2024-11-12 20:48:11,962 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2024-11-12 20:48:11,962 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:48:11,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 6/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-12 20:48:11,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 139 flow [2024-11-12 20:48:11,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 123 flow [2024-11-12 20:48:11,983 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:48:11,991 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;@4f1a0d5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:48:11,992 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-12 20:48:11,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:48:11,997 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:48:11,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:48:11,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:11,998 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:48:11,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:12,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:12,005 INFO L85 PathProgramCache]: Analyzing trace with hash 497041, now seen corresponding path program 1 times [2024-11-12 20:48:12,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:12,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106027977] [2024-11-12 20:48:12,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:12,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106027977] [2024-11-12 20:48:12,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106027977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:12,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:12,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:48:12,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719083235] [2024-11-12 20:48:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:12,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:12,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-12 20:48:12,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:12,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:12,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-12 20:48:12,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:12,769 INFO L124 PetriNetUnfolderBase]: 815/1704 cut-off events. [2024-11-12 20:48:12,770 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-12 20:48:12,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2949 conditions, 1704 events. 815/1704 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10773 event pairs, 608 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 2702. Up to 1144 conditions per place. [2024-11-12 20:48:12,792 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 33 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-12 20:48:12,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 215 flow [2024-11-12 20:48:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-12 20:48:12,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-11-12 20:48:12,809 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 123 flow. Second operand 4 states and 136 transitions. [2024-11-12 20:48:12,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 215 flow [2024-11-12 20:48:12,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:48:12,820 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 174 flow [2024-11-12 20:48:12,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-12 20:48:12,827 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-12 20:48:12,829 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 174 flow [2024-11-12 20:48:12,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:12,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:12,831 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:48:12,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:48:12,832 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:12,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1922932052, now seen corresponding path program 1 times [2024-11-12 20:48:12,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750653818] [2024-11-12 20:48:12,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:12,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750653818] [2024-11-12 20:48:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750653818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617776272] [2024-11-12 20:48:13,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:13,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:13,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:13,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:13,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:48:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:13,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:48:13,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:13,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:48:13,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617776272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:13,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:48:13,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:48:13,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276200551] [2024-11-12 20:48:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:13,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:48:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:48:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:48:13,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-12 20:48:13,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:13,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:13,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-12 20:48:13,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:13,451 INFO L124 PetriNetUnfolderBase]: 815/1702 cut-off events. [2024-11-12 20:48:13,451 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-12 20:48:13,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 1702 events. 815/1702 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10755 event pairs, 608 based on Foata normal form. 2/1485 useless extension candidates. Maximal degree in co-relation 2881. Up to 1134 conditions per place. [2024-11-12 20:48:13,464 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 26 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-12 20:48:13,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 242 flow [2024-11-12 20:48:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:48:13,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:48:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-12 20:48:13,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5028248587570622 [2024-11-12 20:48:13,469 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 174 flow. Second operand 6 states and 178 transitions. [2024-11-12 20:48:13,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 242 flow [2024-11-12 20:48:13,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:48:13,472 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 190 flow [2024-11-12 20:48:13,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-12 20:48:13,473 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-11-12 20:48:13,473 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 190 flow [2024-11-12 20:48:13,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:13,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:13,474 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:48:13,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:13,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:13,677 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:13,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:13,680 INFO L85 PathProgramCache]: Analyzing trace with hash -518648044, now seen corresponding path program 1 times [2024-11-12 20:48:13,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:13,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37841029] [2024-11-12 20:48:13,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:13,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:13,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:13,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37841029] [2024-11-12 20:48:13,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37841029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:13,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866733211] [2024-11-12 20:48:13,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:13,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:13,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:13,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:13,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:48:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:13,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:48:13,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:13,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:13,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866733211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:13,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:13,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:48:13,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892163533] [2024-11-12 20:48:13,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:13,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:48:13,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:48:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:48:14,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-12 20:48:14,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:14,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:14,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-12 20:48:14,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:14,304 INFO L124 PetriNetUnfolderBase]: 821/1726 cut-off events. [2024-11-12 20:48:14,305 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-12 20:48:14,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3025 conditions, 1726 events. 821/1726 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11023 event pairs, 608 based on Foata normal form. 6/1512 useless extension candidates. Maximal degree in co-relation 2883. Up to 1145 conditions per place. [2024-11-12 20:48:14,316 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 31 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2024-11-12 20:48:14,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 416 flow [2024-11-12 20:48:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:48:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:48:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 292 transitions. [2024-11-12 20:48:14,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2024-11-12 20:48:14,321 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 190 flow. Second operand 10 states and 292 transitions. [2024-11-12 20:48:14,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 416 flow [2024-11-12 20:48:14,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 358 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-12 20:48:14,326 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 330 flow [2024-11-12 20:48:14,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2024-11-12 20:48:14,328 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-11-12 20:48:14,329 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 330 flow [2024-11-12 20:48:14,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:14,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:14,329 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:14,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:14,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-12 20:48:14,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:14,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1949792550, now seen corresponding path program 1 times [2024-11-12 20:48:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:14,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27358654] [2024-11-12 20:48:14,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:14,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:14,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:14,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27358654] [2024-11-12 20:48:14,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27358654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:14,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:14,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:48:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276970589] [2024-11-12 20:48:14,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:14,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:14,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:14,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:14,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-12 20:48:14,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:14,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:14,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-12 20:48:14,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:14,920 INFO L124 PetriNetUnfolderBase]: 1614/2877 cut-off events. [2024-11-12 20:48:14,920 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-12 20:48:14,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 2877 events. 1614/2877 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17336 event pairs, 858 based on Foata normal form. 62/2652 useless extension candidates. Maximal degree in co-relation 5282. Up to 1643 conditions per place. [2024-11-12 20:48:14,939 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 86 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-12 20:48:14,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 584 flow [2024-11-12 20:48:14,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-12 20:48:14,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-12 20:48:14,941 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 330 flow. Second operand 4 states and 168 transitions. [2024-11-12 20:48:14,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 584 flow [2024-11-12 20:48:14,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 560 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-12 20:48:14,948 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 335 flow [2024-11-12 20:48:14,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-11-12 20:48:14,949 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-12 20:48:14,949 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 335 flow [2024-11-12 20:48:14,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:14,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:14,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:14,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:48:14,950 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:14,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1550700886, now seen corresponding path program 1 times [2024-11-12 20:48:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551306629] [2024-11-12 20:48:14,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:14,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:14,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:14,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551306629] [2024-11-12 20:48:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551306629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:14,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:48:14,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733705054] [2024-11-12 20:48:14,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:14,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:15,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-12 20:48:15,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:15,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:15,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-12 20:48:15,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:15,606 INFO L124 PetriNetUnfolderBase]: 3211/5700 cut-off events. [2024-11-12 20:48:15,608 INFO L125 PetriNetUnfolderBase]: For 1667/1845 co-relation queries the response was YES. [2024-11-12 20:48:15,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 5700 events. 3211/5700 cut-off events. For 1667/1845 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 36856 event pairs, 1536 based on Foata normal form. 101/5470 useless extension candidates. Maximal degree in co-relation 11901. Up to 3018 conditions per place. [2024-11-12 20:48:15,651 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 95 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-11-12 20:48:15,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 655 flow [2024-11-12 20:48:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-12 20:48:15,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2024-11-12 20:48:15,653 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 335 flow. Second operand 4 states and 164 transitions. [2024-11-12 20:48:15,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 655 flow [2024-11-12 20:48:15,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:48:15,658 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 361 flow [2024-11-12 20:48:15,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-11-12 20:48:15,660 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-11-12 20:48:15,661 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 361 flow [2024-11-12 20:48:15,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:15,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:15,661 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:15,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:48:15,662 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:15,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash -854234206, now seen corresponding path program 1 times [2024-11-12 20:48:15,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:15,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283122794] [2024-11-12 20:48:15,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:15,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:48:15,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:15,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283122794] [2024-11-12 20:48:15,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283122794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:15,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:15,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:48:15,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049737569] [2024-11-12 20:48:15,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:15,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:48:15,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:48:15,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:48:15,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-12 20:48:15,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:15,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:15,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-12 20:48:15,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:16,477 INFO L124 PetriNetUnfolderBase]: 3434/6861 cut-off events. [2024-11-12 20:48:16,477 INFO L125 PetriNetUnfolderBase]: For 2245/2247 co-relation queries the response was YES. [2024-11-12 20:48:16,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14893 conditions, 6861 events. 3434/6861 cut-off events. For 2245/2247 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 50529 event pairs, 2335 based on Foata normal form. 100/6624 useless extension candidates. Maximal degree in co-relation 14824. Up to 3697 conditions per place. [2024-11-12 20:48:16,528 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 88 selfloop transitions, 12 changer transitions 0/122 dead transitions. [2024-11-12 20:48:16,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 683 flow [2024-11-12 20:48:16,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:48:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:48:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-11-12 20:48:16,531 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2024-11-12 20:48:16,531 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 361 flow. Second operand 6 states and 231 transitions. [2024-11-12 20:48:16,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 683 flow [2024-11-12 20:48:16,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:48:16,538 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 411 flow [2024-11-12 20:48:16,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=411, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2024-11-12 20:48:16,539 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-11-12 20:48:16,540 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 411 flow [2024-11-12 20:48:16,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:16,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:16,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:16,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:48:16,541 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:16,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash -960567286, now seen corresponding path program 1 times [2024-11-12 20:48:16,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:16,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513322309] [2024-11-12 20:48:16,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:16,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:16,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:16,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513322309] [2024-11-12 20:48:16,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513322309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:16,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:16,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:48:16,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446029612] [2024-11-12 20:48:16,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:16,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:16,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:16,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:16,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:16,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-12 20:48:16,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:16,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:16,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-12 20:48:16,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:17,350 INFO L124 PetriNetUnfolderBase]: 3544/6859 cut-off events. [2024-11-12 20:48:17,350 INFO L125 PetriNetUnfolderBase]: For 3999/4315 co-relation queries the response was YES. [2024-11-12 20:48:17,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15641 conditions, 6859 events. 3544/6859 cut-off events. For 3999/4315 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 48782 event pairs, 695 based on Foata normal form. 170/6852 useless extension candidates. Maximal degree in co-relation 15568. Up to 3503 conditions per place. [2024-11-12 20:48:17,405 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 96 selfloop transitions, 4 changer transitions 2/123 dead transitions. [2024-11-12 20:48:17,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 123 transitions, 765 flow [2024-11-12 20:48:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:17,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-12 20:48:17,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-12 20:48:17,407 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 411 flow. Second operand 4 states and 162 transitions. [2024-11-12 20:48:17,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 123 transitions, 765 flow [2024-11-12 20:48:17,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 747 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-12 20:48:17,414 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 418 flow [2024-11-12 20:48:17,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-11-12 20:48:17,415 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-11-12 20:48:17,415 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 418 flow [2024-11-12 20:48:17,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:17,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:17,416 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:48:17,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:48:17,416 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:17,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:17,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1046268873, now seen corresponding path program 2 times [2024-11-12 20:48:17,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:17,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755087438] [2024-11-12 20:48:17,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:17,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:17,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755087438] [2024-11-12 20:48:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755087438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:17,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903440405] [2024-11-12 20:48:17,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:48:17,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:17,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:17,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:17,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:48:17,713 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:48:17,713 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:17,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:48:17,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:48:17,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:48:17,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903440405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:17,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:17,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:48:17,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640381589] [2024-11-12 20:48:17,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:17,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:48:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:17,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:48:17,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:48:17,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-12 20:48:17,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 418 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:17,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:17,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-12 20:48:17,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:18,540 INFO L124 PetriNetUnfolderBase]: 2663/5161 cut-off events. [2024-11-12 20:48:18,540 INFO L125 PetriNetUnfolderBase]: For 3172/3413 co-relation queries the response was YES. [2024-11-12 20:48:18,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12455 conditions, 5161 events. 2663/5161 cut-off events. For 3172/3413 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 34951 event pairs, 2011 based on Foata normal form. 104/5030 useless extension candidates. Maximal degree in co-relation 12358. Up to 3793 conditions per place. [2024-11-12 20:48:18,574 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 35 selfloop transitions, 35 changer transitions 0/93 dead transitions. [2024-11-12 20:48:18,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 93 transitions, 587 flow [2024-11-12 20:48:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:48:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:48:18,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 616 transitions. [2024-11-12 20:48:18,577 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4350282485875706 [2024-11-12 20:48:18,577 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 418 flow. Second operand 24 states and 616 transitions. [2024-11-12 20:48:18,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 93 transitions, 587 flow [2024-11-12 20:48:18,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 93 transitions, 587 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:48:18,585 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 530 flow [2024-11-12 20:48:18,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=530, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2024-11-12 20:48:18,586 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 52 predicate places. [2024-11-12 20:48:18,586 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 530 flow [2024-11-12 20:48:18,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:18,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:18,587 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:18,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:48:18,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:18,788 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:18,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash 530879877, now seen corresponding path program 1 times [2024-11-12 20:48:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:18,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520471204] [2024-11-12 20:48:18,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:18,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:48:18,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:18,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520471204] [2024-11-12 20:48:18,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520471204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:18,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454060856] [2024-11-12 20:48:18,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:18,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:18,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:48:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:18,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:48:18,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:19,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:19,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454060856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:19,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:19,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-12 20:48:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540803447] [2024-11-12 20:48:19,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:19,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:48:19,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:19,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:48:19,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-12 20:48:19,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-12 20:48:19,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 530 flow. Second operand has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:19,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:19,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-12 20:48:19,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:20,788 INFO L124 PetriNetUnfolderBase]: 4947/8586 cut-off events. [2024-11-12 20:48:20,789 INFO L125 PetriNetUnfolderBase]: For 4649/5068 co-relation queries the response was YES. [2024-11-12 20:48:20,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21367 conditions, 8586 events. 4947/8586 cut-off events. For 4649/5068 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 56768 event pairs, 1089 based on Foata normal form. 376/8620 useless extension candidates. Maximal degree in co-relation 21273. Up to 1527 conditions per place. [2024-11-12 20:48:20,851 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 196 selfloop transitions, 51 changer transitions 0/267 dead transitions. [2024-11-12 20:48:20,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 267 transitions, 1676 flow [2024-11-12 20:48:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:48:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:48:20,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 532 transitions. [2024-11-12 20:48:20,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5304087736789631 [2024-11-12 20:48:20,854 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 530 flow. Second operand 17 states and 532 transitions. [2024-11-12 20:48:20,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 267 transitions, 1676 flow [2024-11-12 20:48:20,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 267 transitions, 1552 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-11-12 20:48:20,874 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 719 flow [2024-11-12 20:48:20,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=719, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-11-12 20:48:20,875 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2024-11-12 20:48:20,875 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 719 flow [2024-11-12 20:48:20,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:20,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:20,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:20,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:48:21,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:21,081 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:21,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:21,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1301865447, now seen corresponding path program 1 times [2024-11-12 20:48:21,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:21,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373462260] [2024-11-12 20:48:21,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:21,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:21,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373462260] [2024-11-12 20:48:21,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373462260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:21,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:21,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:48:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056563895] [2024-11-12 20:48:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:21,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:48:21,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:48:21,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:48:21,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-12 20:48:21,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 719 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:21,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:21,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-12 20:48:21,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:22,513 INFO L124 PetriNetUnfolderBase]: 7131/13060 cut-off events. [2024-11-12 20:48:22,513 INFO L125 PetriNetUnfolderBase]: For 16188/16855 co-relation queries the response was YES. [2024-11-12 20:48:22,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35061 conditions, 13060 events. 7131/13060 cut-off events. For 16188/16855 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 98458 event pairs, 2390 based on Foata normal form. 447/13340 useless extension candidates. Maximal degree in co-relation 34963. Up to 5871 conditions per place. [2024-11-12 20:48:22,596 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 177 selfloop transitions, 11 changer transitions 0/207 dead transitions. [2024-11-12 20:48:22,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 207 transitions, 1639 flow [2024-11-12 20:48:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:48:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:48:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-11-12 20:48:22,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-12 20:48:22,598 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 719 flow. Second operand 6 states and 243 transitions. [2024-11-12 20:48:22,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 207 transitions, 1639 flow [2024-11-12 20:48:22,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 207 transitions, 1497 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-11-12 20:48:22,627 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 774 flow [2024-11-12 20:48:22,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-11-12 20:48:22,628 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 66 predicate places. [2024-11-12 20:48:22,628 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 774 flow [2024-11-12 20:48:22,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:22,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:22,629 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:22,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:48:22,630 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:22,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash -121098323, now seen corresponding path program 2 times [2024-11-12 20:48:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:22,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256849240] [2024-11-12 20:48:22,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:22,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256849240] [2024-11-12 20:48:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256849240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:22,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:22,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:48:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948945732] [2024-11-12 20:48:22,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:22,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:48:22,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:22,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:48:22,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:48:22,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-12 20:48:22,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 774 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:22,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:22,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-12 20:48:22,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:24,378 INFO L124 PetriNetUnfolderBase]: 10352/18599 cut-off events. [2024-11-12 20:48:24,379 INFO L125 PetriNetUnfolderBase]: For 22630/24110 co-relation queries the response was YES. [2024-11-12 20:48:24,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49484 conditions, 18599 events. 10352/18599 cut-off events. For 22630/24110 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 142722 event pairs, 3846 based on Foata normal form. 633/18632 useless extension candidates. Maximal degree in co-relation 49382. Up to 6352 conditions per place. [2024-11-12 20:48:24,510 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 180 selfloop transitions, 11 changer transitions 0/210 dead transitions. [2024-11-12 20:48:24,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 210 transitions, 1591 flow [2024-11-12 20:48:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:48:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:48:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-11-12 20:48:24,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6694915254237288 [2024-11-12 20:48:24,512 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 774 flow. Second operand 6 states and 237 transitions. [2024-11-12 20:48:24,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 210 transitions, 1591 flow [2024-11-12 20:48:24,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 210 transitions, 1580 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 20:48:24,571 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 846 flow [2024-11-12 20:48:24,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=846, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2024-11-12 20:48:24,572 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2024-11-12 20:48:24,573 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 846 flow [2024-11-12 20:48:24,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:24,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:24,573 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:24,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:48:24,574 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:24,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:24,574 INFO L85 PathProgramCache]: Analyzing trace with hash -455583147, now seen corresponding path program 3 times [2024-11-12 20:48:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:24,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404074401] [2024-11-12 20:48:24,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:24,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:24,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404074401] [2024-11-12 20:48:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404074401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:24,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:24,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:48:24,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563428466] [2024-11-12 20:48:24,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:24,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:48:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:48:24,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:48:24,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-12 20:48:24,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 123 transitions, 846 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:24,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:24,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-12 20:48:24,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:26,717 INFO L124 PetriNetUnfolderBase]: 10824/19607 cut-off events. [2024-11-12 20:48:26,717 INFO L125 PetriNetUnfolderBase]: For 37381/38707 co-relation queries the response was YES. [2024-11-12 20:48:26,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54204 conditions, 19607 events. 10824/19607 cut-off events. For 37381/38707 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 148507 event pairs, 2241 based on Foata normal form. 336/19420 useless extension candidates. Maximal degree in co-relation 54098. Up to 7910 conditions per place. [2024-11-12 20:48:26,843 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 173 selfloop transitions, 18 changer transitions 1/211 dead transitions. [2024-11-12 20:48:26,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 211 transitions, 1640 flow [2024-11-12 20:48:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:48:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:48:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-11-12 20:48:26,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6807909604519774 [2024-11-12 20:48:26,845 INFO L175 Difference]: Start difference. First operand has 132 places, 123 transitions, 846 flow. Second operand 6 states and 241 transitions. [2024-11-12 20:48:26,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 211 transitions, 1640 flow [2024-11-12 20:48:26,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 211 transitions, 1619 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-12 20:48:26,902 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 911 flow [2024-11-12 20:48:26,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=911, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2024-11-12 20:48:26,903 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-12 20:48:26,903 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 911 flow [2024-11-12 20:48:26,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:26,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:26,904 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:26,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:48:26,904 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:26,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:26,905 INFO L85 PathProgramCache]: Analyzing trace with hash -183390428, now seen corresponding path program 1 times [2024-11-12 20:48:26,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:26,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913429834] [2024-11-12 20:48:26,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:26,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 20:48:26,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:26,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913429834] [2024-11-12 20:48:26,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913429834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:26,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:26,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:48:26,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731393129] [2024-11-12 20:48:26,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:26,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:48:26,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:26,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:48:26,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:48:27,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-12 20:48:27,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 125 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:27,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:27,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-12 20:48:27,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:28,577 INFO L124 PetriNetUnfolderBase]: 9302/17039 cut-off events. [2024-11-12 20:48:28,578 INFO L125 PetriNetUnfolderBase]: For 30657/31719 co-relation queries the response was YES. [2024-11-12 20:48:28,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46980 conditions, 17039 events. 9302/17039 cut-off events. For 30657/31719 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 125815 event pairs, 7286 based on Foata normal form. 141/16678 useless extension candidates. Maximal degree in co-relation 46872. Up to 12744 conditions per place. [2024-11-12 20:48:28,690 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 83 selfloop transitions, 9 changer transitions 29/148 dead transitions. [2024-11-12 20:48:28,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 148 transitions, 1293 flow [2024-11-12 20:48:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:48:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:48:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-12 20:48:28,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2024-11-12 20:48:28,692 INFO L175 Difference]: Start difference. First operand has 138 places, 125 transitions, 911 flow. Second operand 6 states and 217 transitions. [2024-11-12 20:48:28,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 148 transitions, 1293 flow [2024-11-12 20:48:28,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 1237 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-12 20:48:28,759 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 850 flow [2024-11-12 20:48:28,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-11-12 20:48:28,760 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2024-11-12 20:48:28,760 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 850 flow [2024-11-12 20:48:28,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:28,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:28,761 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:28,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:48:28,761 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:28,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1139171024, now seen corresponding path program 1 times [2024-11-12 20:48:28,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:28,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993437573] [2024-11-12 20:48:28,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:28,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 20:48:28,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:28,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993437573] [2024-11-12 20:48:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993437573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:28,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741408843] [2024-11-12 20:48:28,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:28,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:28,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:28,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:28,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:48:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:29,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 20:48:29,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 20:48:29,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 20:48:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741408843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:29,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:29,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-12 20:48:29,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611726813] [2024-11-12 20:48:29,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:29,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:48:29,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:29,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:48:29,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-12 20:48:29,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-12 20:48:29,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 850 flow. Second operand has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:29,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:29,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-12 20:48:29,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:30,936 INFO L124 PetriNetUnfolderBase]: 8094/15411 cut-off events. [2024-11-12 20:48:30,936 INFO L125 PetriNetUnfolderBase]: For 24433/25608 co-relation queries the response was YES. [2024-11-12 20:48:30,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41413 conditions, 15411 events. 8094/15411 cut-off events. For 24433/25608 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 119224 event pairs, 6514 based on Foata normal form. 28/14895 useless extension candidates. Maximal degree in co-relation 41339. Up to 6767 conditions per place. [2024-11-12 20:48:31,037 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 82 selfloop transitions, 32 changer transitions 1/142 dead transitions. [2024-11-12 20:48:31,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 142 transitions, 1191 flow [2024-11-12 20:48:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:48:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:48:31,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-12 20:48:31,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5050847457627119 [2024-11-12 20:48:31,040 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 850 flow. Second operand 10 states and 298 transitions. [2024-11-12 20:48:31,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 142 transitions, 1191 flow [2024-11-12 20:48:31,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 142 transitions, 1066 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-11-12 20:48:31,091 INFO L231 Difference]: Finished difference. Result has 133 places, 110 transitions, 717 flow [2024-11-12 20:48:31,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=717, PETRI_PLACES=133, PETRI_TRANSITIONS=110} [2024-11-12 20:48:31,092 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 75 predicate places. [2024-11-12 20:48:31,092 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 110 transitions, 717 flow [2024-11-12 20:48:31,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:31,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:31,093 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-11-12 20:48:31,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 20:48:31,293 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,SelfDestructingSolverStorable13 [2024-11-12 20:48:31,294 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:31,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash -823580301, now seen corresponding path program 2 times [2024-11-12 20:48:31,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:31,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200644742] [2024-11-12 20:48:31,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:31,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:31,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:31,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200644742] [2024-11-12 20:48:31,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200644742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:31,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273238554] [2024-11-12 20:48:31,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:48:31,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:31,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:31,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:31,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:48:31,923 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:48:31,923 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:31,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:48:31,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-12 20:48:32,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-12 20:48:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273238554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:32,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:32,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-11-12 20:48:32,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100594113] [2024-11-12 20:48:32,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:32,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:48:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:48:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-12 20:48:32,225 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-12 20:48:32,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 110 transitions, 717 flow. Second operand has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:32,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:32,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-12 20:48:32,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:33,826 INFO L124 PetriNetUnfolderBase]: 7912/14851 cut-off events. [2024-11-12 20:48:33,826 INFO L125 PetriNetUnfolderBase]: For 17807/18589 co-relation queries the response was YES. [2024-11-12 20:48:33,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38282 conditions, 14851 events. 7912/14851 cut-off events. For 17807/18589 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 113670 event pairs, 6420 based on Foata normal form. 112/14414 useless extension candidates. Maximal degree in co-relation 38223. Up to 11175 conditions per place. [2024-11-12 20:48:33,930 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 44 selfloop transitions, 44 changer transitions 0/115 dead transitions. [2024-11-12 20:48:33,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 115 transitions, 932 flow [2024-11-12 20:48:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 20:48:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 20:48:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 494 transitions. [2024-11-12 20:48:33,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4406779661016949 [2024-11-12 20:48:33,933 INFO L175 Difference]: Start difference. First operand has 133 places, 110 transitions, 717 flow. Second operand 19 states and 494 transitions. [2024-11-12 20:48:33,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 115 transitions, 932 flow [2024-11-12 20:48:34,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 115 transitions, 839 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-12 20:48:34,151 INFO L231 Difference]: Finished difference. Result has 138 places, 115 transitions, 751 flow [2024-11-12 20:48:34,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=751, PETRI_PLACES=138, PETRI_TRANSITIONS=115} [2024-11-12 20:48:34,152 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-11-12 20:48:34,152 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 115 transitions, 751 flow [2024-11-12 20:48:34,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:34,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:34,153 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:34,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:34,357 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,SelfDestructingSolverStorable14 [2024-11-12 20:48:34,358 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:34,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1081474090, now seen corresponding path program 1 times [2024-11-12 20:48:34,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:34,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021161876] [2024-11-12 20:48:34,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:34,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:48:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:34,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021161876] [2024-11-12 20:48:34,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021161876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:34,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800814058] [2024-11-12 20:48:34,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:34,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:34,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:34,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:34,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:48:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:34,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:48:34,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:48:34,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:48:34,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800814058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:34,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:34,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:48:34,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141178946] [2024-11-12 20:48:34,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:34,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:48:34,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:34,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:48:34,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:48:34,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-12 20:48:34,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 115 transitions, 751 flow. Second operand has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:34,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:34,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-12 20:48:34,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:36,606 INFO L124 PetriNetUnfolderBase]: 13153/23010 cut-off events. [2024-11-12 20:48:36,607 INFO L125 PetriNetUnfolderBase]: For 26773/28152 co-relation queries the response was YES. [2024-11-12 20:48:36,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60567 conditions, 23010 events. 13153/23010 cut-off events. For 26773/28152 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 171978 event pairs, 3554 based on Foata normal form. 1002/23600 useless extension candidates. Maximal degree in co-relation 60512. Up to 7704 conditions per place. [2024-11-12 20:48:36,739 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 308 selfloop transitions, 18 changer transitions 0/352 dead transitions. [2024-11-12 20:48:36,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 352 transitions, 2861 flow [2024-11-12 20:48:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:48:36,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:48:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 420 transitions. [2024-11-12 20:48:36,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-12 20:48:36,741 INFO L175 Difference]: Start difference. First operand has 138 places, 115 transitions, 751 flow. Second operand 10 states and 420 transitions. [2024-11-12 20:48:36,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 352 transitions, 2861 flow [2024-11-12 20:48:36,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 352 transitions, 2766 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-12 20:48:36,785 INFO L231 Difference]: Finished difference. Result has 139 places, 124 transitions, 752 flow [2024-11-12 20:48:36,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=752, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2024-11-12 20:48:36,786 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 81 predicate places. [2024-11-12 20:48:36,786 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 752 flow [2024-11-12 20:48:36,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:36,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:36,787 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:36,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 20:48:36,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:36,988 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:36,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1223277049, now seen corresponding path program 1 times [2024-11-12 20:48:36,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:36,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822066076] [2024-11-12 20:48:36,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:36,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:48:37,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:37,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822066076] [2024-11-12 20:48:37,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822066076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994280090] [2024-11-12 20:48:37,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:37,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:37,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:37,069 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:37,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:48:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:37,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:48:37,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:37,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:37,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994280090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:37,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:37,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-12 20:48:37,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213331067] [2024-11-12 20:48:37,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:37,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:48:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:48:37,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-12 20:48:37,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-12 20:48:37,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 752 flow. Second operand has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:37,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:37,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-12 20:48:37,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:40,539 INFO L124 PetriNetUnfolderBase]: 16373/26472 cut-off events. [2024-11-12 20:48:40,540 INFO L125 PetriNetUnfolderBase]: For 46343/46751 co-relation queries the response was YES. [2024-11-12 20:48:40,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78560 conditions, 26472 events. 16373/26472 cut-off events. For 46343/46751 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 180933 event pairs, 2903 based on Foata normal form. 481/26359 useless extension candidates. Maximal degree in co-relation 78507. Up to 9964 conditions per place. [2024-11-12 20:48:40,690 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 174 selfloop transitions, 43 changer transitions 66/305 dead transitions. [2024-11-12 20:48:40,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 305 transitions, 2340 flow [2024-11-12 20:48:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:48:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:48:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 483 transitions. [2024-11-12 20:48:40,691 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.481555333998006 [2024-11-12 20:48:40,692 INFO L175 Difference]: Start difference. First operand has 139 places, 124 transitions, 752 flow. Second operand 17 states and 483 transitions. [2024-11-12 20:48:40,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 305 transitions, 2340 flow [2024-11-12 20:48:40,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 305 transitions, 2254 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-12 20:48:40,769 INFO L231 Difference]: Finished difference. Result has 153 places, 112 transitions, 750 flow [2024-11-12 20:48:40,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=750, PETRI_PLACES=153, PETRI_TRANSITIONS=112} [2024-11-12 20:48:40,770 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 95 predicate places. [2024-11-12 20:48:40,770 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 112 transitions, 750 flow [2024-11-12 20:48:40,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:40,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:40,771 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:40,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 20:48:40,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 20:48:40,976 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:40,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 781914272, now seen corresponding path program 1 times [2024-11-12 20:48:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688947006] [2024-11-12 20:48:40,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:48:41,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:41,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688947006] [2024-11-12 20:48:41,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688947006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:41,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452506809] [2024-11-12 20:48:41,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:41,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:41,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:41,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:41,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 20:48:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:41,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:48:41,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:48:41,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:48:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452506809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:41,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:41,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:48:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885662726] [2024-11-12 20:48:41,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:41,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:48:41,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:48:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:48:41,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-12 20:48:41,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 112 transitions, 750 flow. Second operand has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:41,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:41,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-12 20:48:41,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:45,366 INFO L124 PetriNetUnfolderBase]: 22625/39153 cut-off events. [2024-11-12 20:48:45,366 INFO L125 PetriNetUnfolderBase]: For 63849/64631 co-relation queries the response was YES. [2024-11-12 20:48:45,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114844 conditions, 39153 events. 22625/39153 cut-off events. For 63849/64631 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 304668 event pairs, 4945 based on Foata normal form. 1134/39758 useless extension candidates. Maximal degree in co-relation 114785. Up to 11404 conditions per place. [2024-11-12 20:48:45,630 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 295 selfloop transitions, 19 changer transitions 0/337 dead transitions. [2024-11-12 20:48:45,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 337 transitions, 2528 flow [2024-11-12 20:48:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:48:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:48:45,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2024-11-12 20:48:45,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796610169491526 [2024-11-12 20:48:45,632 INFO L175 Difference]: Start difference. First operand has 153 places, 112 transitions, 750 flow. Second operand 10 states and 401 transitions. [2024-11-12 20:48:45,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 337 transitions, 2528 flow [2024-11-12 20:48:45,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 337 transitions, 2356 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-11-12 20:48:45,739 INFO L231 Difference]: Finished difference. Result has 141 places, 121 transitions, 728 flow [2024-11-12 20:48:45,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=728, PETRI_PLACES=141, PETRI_TRANSITIONS=121} [2024-11-12 20:48:45,739 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2024-11-12 20:48:45,740 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 121 transitions, 728 flow [2024-11-12 20:48:45,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:45,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:45,740 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:45,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 20:48:45,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 20:48:45,941 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:45,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:45,941 INFO L85 PathProgramCache]: Analyzing trace with hash -91246797, now seen corresponding path program 1 times [2024-11-12 20:48:45,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:45,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524640437] [2024-11-12 20:48:45,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:45,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-12 20:48:45,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:45,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524640437] [2024-11-12 20:48:45,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524640437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:45,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:45,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:48:45,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213751276] [2024-11-12 20:48:45,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:45,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:45,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:45,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:46,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-12 20:48:46,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 121 transitions, 728 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:46,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:46,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-12 20:48:46,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:49,512 INFO L124 PetriNetUnfolderBase]: 20251/34705 cut-off events. [2024-11-12 20:48:49,513 INFO L125 PetriNetUnfolderBase]: For 63664/64463 co-relation queries the response was YES. [2024-11-12 20:48:49,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100746 conditions, 34705 events. 20251/34705 cut-off events. For 63664/64463 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 263862 event pairs, 8985 based on Foata normal form. 868/34736 useless extension candidates. Maximal degree in co-relation 100694. Up to 15030 conditions per place. [2024-11-12 20:48:49,754 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 149 selfloop transitions, 7 changer transitions 0/183 dead transitions. [2024-11-12 20:48:49,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 183 transitions, 1371 flow [2024-11-12 20:48:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-12 20:48:49,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.690677966101695 [2024-11-12 20:48:49,755 INFO L175 Difference]: Start difference. First operand has 141 places, 121 transitions, 728 flow. Second operand 4 states and 163 transitions. [2024-11-12 20:48:49,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 183 transitions, 1371 flow [2024-11-12 20:48:49,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 183 transitions, 1342 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-12 20:48:49,876 INFO L231 Difference]: Finished difference. Result has 144 places, 122 transitions, 741 flow [2024-11-12 20:48:49,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=741, PETRI_PLACES=144, PETRI_TRANSITIONS=122} [2024-11-12 20:48:49,877 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 86 predicate places. [2024-11-12 20:48:49,877 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 122 transitions, 741 flow [2024-11-12 20:48:49,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:49,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:49,877 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:49,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 20:48:49,878 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:49,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash 545324894, now seen corresponding path program 2 times [2024-11-12 20:48:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:49,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974864753] [2024-11-12 20:48:49,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:49,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-12 20:48:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974864753] [2024-11-12 20:48:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974864753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14068396] [2024-11-12 20:48:50,050 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:48:50,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:50,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:50,052 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:50,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 20:48:50,135 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:48:50,135 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:50,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:48:50,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-12 20:48:50,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-12 20:48:50,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14068396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:50,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:50,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-11-12 20:48:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204584459] [2024-11-12 20:48:50,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:50,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 20:48:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 20:48:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-12 20:48:50,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-12 20:48:50,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 122 transitions, 741 flow. Second operand has 13 states, 13 states have (on average 22.76923076923077) internal successors, (296), 13 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:50,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:50,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-12 20:48:50,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:57,581 INFO L124 PetriNetUnfolderBase]: 44588/72381 cut-off events. [2024-11-12 20:48:57,581 INFO L125 PetriNetUnfolderBase]: For 138870/140737 co-relation queries the response was YES. [2024-11-12 20:48:57,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210097 conditions, 72381 events. 44588/72381 cut-off events. For 138870/140737 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 574379 event pairs, 9854 based on Foata normal form. 858/72162 useless extension candidates. Maximal degree in co-relation 210042. Up to 13897 conditions per place. [2024-11-12 20:48:58,174 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 338 selfloop transitions, 52 changer transitions 9/426 dead transitions. [2024-11-12 20:48:58,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 426 transitions, 3678 flow [2024-11-12 20:48:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 20:48:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 20:48:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 610 transitions. [2024-11-12 20:48:58,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4923325262308313 [2024-11-12 20:48:58,177 INFO L175 Difference]: Start difference. First operand has 144 places, 122 transitions, 741 flow. Second operand 21 states and 610 transitions. [2024-11-12 20:48:58,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 426 transitions, 3678 flow [2024-11-12 20:48:58,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 426 transitions, 3604 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-12 20:48:58,859 INFO L231 Difference]: Finished difference. Result has 160 places, 138 transitions, 932 flow [2024-11-12 20:48:58,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=932, PETRI_PLACES=160, PETRI_TRANSITIONS=138} [2024-11-12 20:48:58,859 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 102 predicate places. [2024-11-12 20:48:58,859 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 138 transitions, 932 flow [2024-11-12 20:48:58,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.76923076923077) internal successors, (296), 13 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:58,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:58,860 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:58,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 20:48:59,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:59,061 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:48:59,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1148191698, now seen corresponding path program 1 times [2024-11-12 20:48:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:59,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712107551] [2024-11-12 20:48:59,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-12 20:48:59,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:59,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712107551] [2024-11-12 20:48:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712107551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672161023] [2024-11-12 20:48:59,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:59,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:59,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:59,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:48:59,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 20:48:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:59,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:48:59,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:48:59,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:48:59,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672161023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:59,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:59,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-12 20:48:59,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610675330] [2024-11-12 20:48:59,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:59,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:48:59,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:59,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:48:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-12 20:48:59,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-12 20:48:59,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 138 transitions, 932 flow. Second operand has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:59,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:59,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-12 20:48:59,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand