./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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/chl-array-int-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:41:10,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:41:10,379 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:41:10,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:41:10,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:41:10,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:41:10,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:41:10,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:41:10,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:41:10,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:41:10,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:41:10,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:41:10,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:41:10,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:41:10,422 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:41:10,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:41:10,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:41:10,423 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:41:10,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:41:10,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:41:10,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:41:10,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:41:10,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:41:10,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:41:10,428 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:41:10,428 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:41:10,429 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:41:10,429 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:41:10,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:41:10,429 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:41:10,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:41:10,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:41:10,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:41:10,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:41:10,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:41:10,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:41:10,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:41:10,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:41:10,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:41:10,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:41:10,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:41:10,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:41:10,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:41:10,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:41:10,436 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-11-12 20:41:10,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:41:10,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:41:10,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:41:10,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:41:10,717 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:41:10,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-12 20:41:12,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:41:12,418 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:41:12,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-12 20:41:12,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb73c828/ebf983047bf8408e96bffa9502276bb7/FLAG646a82dfe [2024-11-12 20:41:12,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb73c828/ebf983047bf8408e96bffa9502276bb7 [2024-11-12 20:41:12,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:41:12,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:41:12,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:41:12,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:41:12,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:41:12,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be9bcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12, skipping insertion in model container [2024-11-12 20:41:12,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:41:12,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:41:12,716 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:41:12,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:41:12,763 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:41:12,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12 WrapperNode [2024-11-12 20:41:12,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:41:12,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:41:12,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:41:12,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:41:12,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,805 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 235 [2024-11-12 20:41:12,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:41:12,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:41:12,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:41:12,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:41:12,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,820 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,836 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-12 20:41:12,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:41:12,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:41:12,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:41:12,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:41:12,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (1/1) ... [2024-11-12 20:41:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:41:12,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:12,896 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 20:41:12,899 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 20:41:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:41:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:41:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:41:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:41:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:41:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:41:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:41:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:41:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:41:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:41:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:41:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:41:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:41:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:41:12,944 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 20:41:13,048 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:41:13,050 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:41:13,518 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:41:13,519 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:41:13,840 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:41:13,841 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 20:41:13,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:13 BoogieIcfgContainer [2024-11-12 20:41:13,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:41:13,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:41:13,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:41:13,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:41:13,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:41:12" (1/3) ... [2024-11-12 20:41:13,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb3b8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:13, skipping insertion in model container [2024-11-12 20:41:13,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:12" (2/3) ... [2024-11-12 20:41:13,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb3b8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:13, skipping insertion in model container [2024-11-12 20:41:13,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:13" (3/3) ... [2024-11-12 20:41:13,853 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-11-12 20:41:13,870 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:41:13,870 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-12 20:41:13,871 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:41:13,939 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:41:13,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-11-12 20:41:14,005 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-11-12 20:41:14,006 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:41:14,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 279 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-12 20:41:14,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-11-12 20:41:14,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 173 flow [2024-11-12 20:41:14,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:41:14,035 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;@47737fc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:41:14,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-12 20:41:14,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:41:14,038 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:41:14,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:41:14,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:14,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:41:14,040 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:14,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash 728004, now seen corresponding path program 1 times [2024-11-12 20:41:14,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:14,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328733211] [2024-11-12 20:41:14,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:14,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:14,334 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 20:41:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328733211] [2024-11-12 20:41:14,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328733211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:14,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:14,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:14,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428389885] [2024-11-12 20:41:14,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:14,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:14,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:14,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:14,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-12 20:41:14,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:14,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:14,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-12 20:41:14,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:14,788 INFO L124 PetriNetUnfolderBase]: 512/1314 cut-off events. [2024-11-12 20:41:14,788 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-12 20:41:14,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 1314 events. 512/1314 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9058 event pairs, 322 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 2041. Up to 772 conditions per place. [2024-11-12 20:41:14,807 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 34 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-12 20:41:14,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 249 flow [2024-11-12 20:41:14,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-12 20:41:14,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-11-12 20:41:14,824 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 173 flow. Second operand 4 states and 210 transitions. [2024-11-12 20:41:14,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 249 flow [2024-11-12 20:41:14,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:41:14,835 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 176 flow [2024-11-12 20:41:14,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-11-12 20:41:14,844 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-11-12 20:41:14,846 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 176 flow [2024-11-12 20:41:14,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:14,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:14,847 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-12 20:41:14,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:41:14,848 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:14,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 22568887, now seen corresponding path program 1 times [2024-11-12 20:41:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:14,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119725971] [2024-11-12 20:41:14,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:14,941 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 20:41:14,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119725971] [2024-11-12 20:41:14,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119725971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:14,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:14,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:14,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747986997] [2024-11-12 20:41:14,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:14,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:14,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:14,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:14,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:14,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-12 20:41:14,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:14,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:14,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-12 20:41:14,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:15,210 INFO L124 PetriNetUnfolderBase]: 514/1322 cut-off events. [2024-11-12 20:41:15,210 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-12 20:41:15,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 1322 events. 514/1322 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9112 event pairs, 322 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 2094. Up to 781 conditions per place. [2024-11-12 20:41:15,219 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-11-12 20:41:15,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 290 flow [2024-11-12 20:41:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-12 20:41:15,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-12 20:41:15,223 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 176 flow. Second operand 4 states and 216 transitions. [2024-11-12 20:41:15,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 290 flow [2024-11-12 20:41:15,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:41:15,229 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 220 flow [2024-11-12 20:41:15,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-11-12 20:41:15,230 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-11-12 20:41:15,230 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 220 flow [2024-11-12 20:41:15,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:15,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:15,231 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:41:15,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:41:15,233 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:15,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash 213791924, now seen corresponding path program 1 times [2024-11-12 20:41:15,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:15,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125857261] [2024-11-12 20:41:15,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:15,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:15,455 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 20:41:15,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:15,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125857261] [2024-11-12 20:41:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125857261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:15,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:15,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474504673] [2024-11-12 20:41:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:15,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:15,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-12 20:41:15,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:15,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:15,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-12 20:41:15,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:15,884 INFO L124 PetriNetUnfolderBase]: 1224/3024 cut-off events. [2024-11-12 20:41:15,885 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-12 20:41:15,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4945 conditions, 3024 events. 1224/3024 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 24558 event pairs, 768 based on Foata normal form. 24/2302 useless extension candidates. Maximal degree in co-relation 2504. Up to 943 conditions per place. [2024-11-12 20:41:15,901 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2024-11-12 20:41:15,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 452 flow [2024-11-12 20:41:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-11-12 20:41:15,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-11-12 20:41:15,904 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 220 flow. Second operand 5 states and 290 transitions. [2024-11-12 20:41:15,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 452 flow [2024-11-12 20:41:15,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:41:15,907 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 253 flow [2024-11-12 20:41:15,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-11-12 20:41:15,908 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2024-11-12 20:41:15,908 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 253 flow [2024-11-12 20:41:15,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:15,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:15,909 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:41:15,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:41:15,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:15,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1959390980, now seen corresponding path program 1 times [2024-11-12 20:41:15,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:15,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486804137] [2024-11-12 20:41:15,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:15,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:15,987 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 20:41:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486804137] [2024-11-12 20:41:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486804137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736415778] [2024-11-12 20:41:15,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:15,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:15,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:15,992 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 20:41:15,993 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 20:41:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:16,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:16,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:16,113 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 20:41:16,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:16,157 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 20:41:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736415778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:16,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-12 20:41:16,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594572720] [2024-11-12 20:41:16,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:16,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 20:41:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:41:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:41:16,182 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-12 20:41:16,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:16,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:16,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-12 20:41:16,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:16,600 INFO L124 PetriNetUnfolderBase]: 1040/2654 cut-off events. [2024-11-12 20:41:16,601 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-12 20:41:16,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 2654 events. 1040/2654 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21277 event pairs, 648 based on Foata normal form. 0/2016 useless extension candidates. Maximal degree in co-relation 2203. Up to 1554 conditions per place. [2024-11-12 20:41:16,618 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-11-12 20:41:16,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 465 flow [2024-11-12 20:41:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:41:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:41:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 490 transitions. [2024-11-12 20:41:16,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-12 20:41:16,621 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 253 flow. Second operand 10 states and 490 transitions. [2024-11-12 20:41:16,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 465 flow [2024-11-12 20:41:16,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:41:16,628 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 415 flow [2024-11-12 20:41:16,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-11-12 20:41:16,631 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-11-12 20:41:16,632 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 415 flow [2024-11-12 20:41:16,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:16,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:16,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:16,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:41:16,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:16,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:16,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1962384161, now seen corresponding path program 1 times [2024-11-12 20:41:16,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:16,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675332526] [2024-11-12 20:41:16,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:16,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:16,914 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 20:41:16,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:16,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675332526] [2024-11-12 20:41:16,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675332526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:16,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:16,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:41:16,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575394834] [2024-11-12 20:41:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:16,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:16,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-12 20:41:16,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:16,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:16,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-12 20:41:16,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:17,531 INFO L124 PetriNetUnfolderBase]: 2294/5682 cut-off events. [2024-11-12 20:41:17,532 INFO L125 PetriNetUnfolderBase]: For 532/532 co-relation queries the response was YES. [2024-11-12 20:41:17,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9597 conditions, 5682 events. 2294/5682 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51837 event pairs, 1412 based on Foata normal form. 88/4480 useless extension candidates. Maximal degree in co-relation 9500. Up to 1735 conditions per place. [2024-11-12 20:41:17,572 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 111 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-11-12 20:41:17,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 829 flow [2024-11-12 20:41:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-12 20:41:17,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7296511627906976 [2024-11-12 20:41:17,574 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 415 flow. Second operand 4 states and 251 transitions. [2024-11-12 20:41:17,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 829 flow [2024-11-12 20:41:17,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 735 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-12 20:41:17,581 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 388 flow [2024-11-12 20:41:17,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-11-12 20:41:17,582 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-12 20:41:17,583 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 388 flow [2024-11-12 20:41:17,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:17,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:17,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:17,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:41:17,584 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:17,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash 287054113, now seen corresponding path program 1 times [2024-11-12 20:41:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467266634] [2024-11-12 20:41:17,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:17,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467266634] [2024-11-12 20:41:17,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467266634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:17,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051028609] [2024-11-12 20:41:17,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:17,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:17,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:17,721 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 20:41:17,723 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 20:41:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:17,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:17,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:17,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:41:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051028609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:17,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:41:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-12 20:41:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990406248] [2024-11-12 20:41:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:17,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:41:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:41:17,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:41:17,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-12 20:41:17,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:17,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:17,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-12 20:41:17,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:18,293 INFO L124 PetriNetUnfolderBase]: 2061/5238 cut-off events. [2024-11-12 20:41:18,294 INFO L125 PetriNetUnfolderBase]: For 508/512 co-relation queries the response was YES. [2024-11-12 20:41:18,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8594 conditions, 5238 events. 2061/5238 cut-off events. For 508/512 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 47388 event pairs, 1290 based on Foata normal form. 78/4059 useless extension candidates. Maximal degree in co-relation 8509. Up to 3126 conditions per place. [2024-11-12 20:41:18,335 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 61 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2024-11-12 20:41:18,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 484 flow [2024-11-12 20:41:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:41:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:41:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-12 20:41:18,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-12 20:41:18,336 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 388 flow. Second operand 3 states and 172 transitions. [2024-11-12 20:41:18,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 484 flow [2024-11-12 20:41:18,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 467 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 20:41:18,341 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 345 flow [2024-11-12 20:41:18,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-12 20:41:18,341 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2024-11-12 20:41:18,342 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 345 flow [2024-11-12 20:41:18,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:18,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:18,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:18,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:41:18,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-12 20:41:18,545 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:18,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:18,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1709075386, now seen corresponding path program 1 times [2024-11-12 20:41:18,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:18,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142678155] [2024-11-12 20:41:18,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:18,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:18,589 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 20:41:18,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:18,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142678155] [2024-11-12 20:41:18,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142678155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:18,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:18,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374471863] [2024-11-12 20:41:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:18,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:18,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-12 20:41:18,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:18,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:18,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-12 20:41:18,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:19,507 INFO L124 PetriNetUnfolderBase]: 4220/9860 cut-off events. [2024-11-12 20:41:19,507 INFO L125 PetriNetUnfolderBase]: For 106/110 co-relation queries the response was YES. [2024-11-12 20:41:19,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16563 conditions, 9860 events. 4220/9860 cut-off events. For 106/110 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 93576 event pairs, 1918 based on Foata normal form. 104/7727 useless extension candidates. Maximal degree in co-relation 16547. Up to 3471 conditions per place. [2024-11-12 20:41:19,578 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 105 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-11-12 20:41:19,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 654 flow [2024-11-12 20:41:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-12 20:41:19,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2024-11-12 20:41:19,581 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 345 flow. Second operand 4 states and 262 transitions. [2024-11-12 20:41:19,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 654 flow [2024-11-12 20:41:19,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:41:19,587 INFO L231 Difference]: Finished difference. Result has 98 places, 106 transitions, 366 flow [2024-11-12 20:41:19,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=98, PETRI_TRANSITIONS=106} [2024-11-12 20:41:19,589 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-12 20:41:19,589 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 106 transitions, 366 flow [2024-11-12 20:41:19,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:19,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:19,590 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:19,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:41:19,590 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:19,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash 681603450, now seen corresponding path program 1 times [2024-11-12 20:41:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864639572] [2024-11-12 20:41:19,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:19,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:19,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864639572] [2024-11-12 20:41:19,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864639572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:19,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607913531] [2024-11-12 20:41:19,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:19,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:19,708 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 20:41:19,711 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 20:41:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:19,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:41:19,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:19,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:41:19,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607913531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:19,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:41:19,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-11-12 20:41:19,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568019898] [2024-11-12 20:41:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:19,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:41:19,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-12 20:41:19,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 106 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:19,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:19,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-12 20:41:19,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:20,798 INFO L124 PetriNetUnfolderBase]: 3808/9624 cut-off events. [2024-11-12 20:41:20,799 INFO L125 PetriNetUnfolderBase]: For 1148/1180 co-relation queries the response was YES. [2024-11-12 20:41:20,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16439 conditions, 9624 events. 3808/9624 cut-off events. For 1148/1180 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 96184 event pairs, 2428 based on Foata normal form. 118/7639 useless extension candidates. Maximal degree in co-relation 16421. Up to 5751 conditions per place. [2024-11-12 20:41:20,862 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 58 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2024-11-12 20:41:20,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 468 flow [2024-11-12 20:41:20,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-12 20:41:20,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-12 20:41:20,864 INFO L175 Difference]: Start difference. First operand has 98 places, 106 transitions, 366 flow. Second operand 4 states and 216 transitions. [2024-11-12 20:41:20,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 468 flow [2024-11-12 20:41:20,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 461 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:41:20,868 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 345 flow [2024-11-12 20:41:20,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-11-12 20:41:20,869 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 16 predicate places. [2024-11-12 20:41:20,869 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 345 flow [2024-11-12 20:41:20,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:20,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:20,869 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:20,887 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 20:41:21,073 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 20:41:21,074 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:21,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1441729190, now seen corresponding path program 1 times [2024-11-12 20:41:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:21,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375571340] [2024-11-12 20:41:21,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:21,128 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 20:41:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375571340] [2024-11-12 20:41:21,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375571340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:21,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:21,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:21,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615426301] [2024-11-12 20:41:21,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:21,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:21,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:21,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-12 20:41:21,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:21,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:21,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-12 20:41:21,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:22,327 INFO L124 PetriNetUnfolderBase]: 6632/14752 cut-off events. [2024-11-12 20:41:22,327 INFO L125 PetriNetUnfolderBase]: For 634/666 co-relation queries the response was YES. [2024-11-12 20:41:22,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25984 conditions, 14752 events. 6632/14752 cut-off events. For 634/666 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 145091 event pairs, 2324 based on Foata normal form. 416/12074 useless extension candidates. Maximal degree in co-relation 25968. Up to 5515 conditions per place. [2024-11-12 20:41:22,448 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 100 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-11-12 20:41:22,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 629 flow [2024-11-12 20:41:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-12 20:41:22,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-11-12 20:41:22,451 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 345 flow. Second operand 4 states and 242 transitions. [2024-11-12 20:41:22,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 629 flow [2024-11-12 20:41:22,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 622 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:41:22,455 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 372 flow [2024-11-12 20:41:22,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2024-11-12 20:41:22,458 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-12 20:41:22,458 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 372 flow [2024-11-12 20:41:22,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:22,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:22,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:22,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:41:22,459 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:22,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1743932735, now seen corresponding path program 1 times [2024-11-12 20:41:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489328365] [2024-11-12 20:41:22,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:22,562 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 20:41:22,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:22,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489328365] [2024-11-12 20:41:22,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489328365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:22,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:22,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:41:22,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665441961] [2024-11-12 20:41:22,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:22,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:22,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:22,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-12 20:41:22,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:22,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:22,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-12 20:41:22,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:23,292 INFO L124 PetriNetUnfolderBase]: 2710/7016 cut-off events. [2024-11-12 20:41:23,292 INFO L125 PetriNetUnfolderBase]: For 1438/1526 co-relation queries the response was YES. [2024-11-12 20:41:23,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12867 conditions, 7016 events. 2710/7016 cut-off events. For 1438/1526 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 66147 event pairs, 1668 based on Foata normal form. 56/5737 useless extension candidates. Maximal degree in co-relation 12850. Up to 3531 conditions per place. [2024-11-12 20:41:23,339 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 109 selfloop transitions, 4 changer transitions 6/157 dead transitions. [2024-11-12 20:41:23,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 767 flow [2024-11-12 20:41:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-11-12 20:41:23,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.727906976744186 [2024-11-12 20:41:23,341 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 372 flow. Second operand 5 states and 313 transitions. [2024-11-12 20:41:23,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 767 flow [2024-11-12 20:41:23,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 157 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:41:23,351 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 391 flow [2024-11-12 20:41:23,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2024-11-12 20:41:23,353 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2024-11-12 20:41:23,353 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 391 flow [2024-11-12 20:41:23,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:23,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:23,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:23,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:41:23,354 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:23,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash -926162940, now seen corresponding path program 1 times [2024-11-12 20:41:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:23,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710592175] [2024-11-12 20:41:23,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:23,399 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 20:41:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:23,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710592175] [2024-11-12 20:41:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710592175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:23,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:23,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794979330] [2024-11-12 20:41:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:23,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:23,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-12 20:41:23,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:23,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:23,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-12 20:41:23,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:24,333 INFO L124 PetriNetUnfolderBase]: 5248/12540 cut-off events. [2024-11-12 20:41:24,333 INFO L125 PetriNetUnfolderBase]: For 3539/3851 co-relation queries the response was YES. [2024-11-12 20:41:24,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23651 conditions, 12540 events. 5248/12540 cut-off events. For 3539/3851 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 123031 event pairs, 2066 based on Foata normal form. 266/10647 useless extension candidates. Maximal degree in co-relation 23630. Up to 4515 conditions per place. [2024-11-12 20:41:24,433 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 117 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2024-11-12 20:41:24,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 815 flow [2024-11-12 20:41:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-11-12 20:41:24,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.752906976744186 [2024-11-12 20:41:24,435 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 391 flow. Second operand 4 states and 259 transitions. [2024-11-12 20:41:24,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 815 flow [2024-11-12 20:41:24,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 810 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:41:24,450 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 408 flow [2024-11-12 20:41:24,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2024-11-12 20:41:24,451 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2024-11-12 20:41:24,451 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 408 flow [2024-11-12 20:41:24,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:24,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:24,455 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:24,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:41:24,456 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:24,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:24,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1353721788, now seen corresponding path program 1 times [2024-11-12 20:41:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:24,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887097923] [2024-11-12 20:41:24,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:24,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:24,519 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 20:41:24,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:24,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887097923] [2024-11-12 20:41:24,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887097923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:24,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:24,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207569388] [2024-11-12 20:41:24,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:24,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:24,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-12 20:41:24,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:24,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:24,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-12 20:41:24,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:26,040 INFO L124 PetriNetUnfolderBase]: 8576/18760 cut-off events. [2024-11-12 20:41:26,040 INFO L125 PetriNetUnfolderBase]: For 6704/7080 co-relation queries the response was YES. [2024-11-12 20:41:26,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38473 conditions, 18760 events. 8576/18760 cut-off events. For 6704/7080 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 185993 event pairs, 3382 based on Foata normal form. 656/16975 useless extension candidates. Maximal degree in co-relation 38451. Up to 7339 conditions per place. [2024-11-12 20:41:26,159 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 113 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2024-11-12 20:41:26,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 150 transitions, 812 flow [2024-11-12 20:41:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:41:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:41:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-11-12 20:41:26,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-11-12 20:41:26,161 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 408 flow. Second operand 4 states and 240 transitions. [2024-11-12 20:41:26,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 150 transitions, 812 flow [2024-11-12 20:41:26,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:41:26,206 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 440 flow [2024-11-12 20:41:26,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-11-12 20:41:26,207 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2024-11-12 20:41:26,207 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 440 flow [2024-11-12 20:41:26,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:26,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:26,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:26,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:41:26,208 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:26,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:26,209 INFO L85 PathProgramCache]: Analyzing trace with hash -984296695, now seen corresponding path program 1 times [2024-11-12 20:41:26,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:26,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199312609] [2024-11-12 20:41:26,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:26,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:26,436 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 20:41:26,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:26,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199312609] [2024-11-12 20:41:26,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199312609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:26,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:26,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:41:26,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601389297] [2024-11-12 20:41:26,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:26,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:26,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:26,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-12 20:41:26,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:26,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:26,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-12 20:41:26,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:27,523 INFO L124 PetriNetUnfolderBase]: 5550/13978 cut-off events. [2024-11-12 20:41:27,523 INFO L125 PetriNetUnfolderBase]: For 6492/6896 co-relation queries the response was YES. [2024-11-12 20:41:27,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29601 conditions, 13978 events. 5550/13978 cut-off events. For 6492/6896 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 146387 event pairs, 3746 based on Foata normal form. 216/12613 useless extension candidates. Maximal degree in co-relation 29577. Up to 7943 conditions per place. [2024-11-12 20:41:27,610 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 77 selfloop transitions, 3 changer transitions 24/142 dead transitions. [2024-11-12 20:41:27,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 770 flow [2024-11-12 20:41:27,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-12 20:41:27,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6837209302325581 [2024-11-12 20:41:27,612 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 440 flow. Second operand 5 states and 294 transitions. [2024-11-12 20:41:27,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 770 flow [2024-11-12 20:41:27,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 142 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:41:27,656 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 443 flow [2024-11-12 20:41:27,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-11-12 20:41:27,657 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-11-12 20:41:27,657 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 443 flow [2024-11-12 20:41:27,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:27,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:27,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:27,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:41:27,658 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:27,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:27,659 INFO L85 PathProgramCache]: Analyzing trace with hash 201386372, now seen corresponding path program 1 times [2024-11-12 20:41:27,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:27,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73528488] [2024-11-12 20:41:27,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:27,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:27,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73528488] [2024-11-12 20:41:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73528488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:27,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:27,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:41:27,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189242221] [2024-11-12 20:41:27,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:27,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:27,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:27,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:27,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-12 20:41:27,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:27,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:27,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-12 20:41:27,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:28,720 INFO L124 PetriNetUnfolderBase]: 3144/8019 cut-off events. [2024-11-12 20:41:28,720 INFO L125 PetriNetUnfolderBase]: For 3854/4050 co-relation queries the response was YES. [2024-11-12 20:41:28,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17129 conditions, 8019 events. 3144/8019 cut-off events. For 3854/4050 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 76216 event pairs, 2038 based on Foata normal form. 152/7384 useless extension candidates. Maximal degree in co-relation 17101. Up to 3999 conditions per place. [2024-11-12 20:41:28,759 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 100 selfloop transitions, 8 changer transitions 8/154 dead transitions. [2024-11-12 20:41:28,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 154 transitions, 845 flow [2024-11-12 20:41:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-11-12 20:41:28,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7209302325581395 [2024-11-12 20:41:28,761 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 443 flow. Second operand 5 states and 310 transitions. [2024-11-12 20:41:28,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 154 transitions, 845 flow [2024-11-12 20:41:28,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 154 transitions, 832 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-12 20:41:28,782 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 463 flow [2024-11-12 20:41:28,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=117, PETRI_TRANSITIONS=109} [2024-11-12 20:41:28,783 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-11-12 20:41:28,783 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 463 flow [2024-11-12 20:41:28,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:28,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:28,784 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:41:28,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:41:28,784 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:28,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1739977591, now seen corresponding path program 2 times [2024-11-12 20:41:28,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:28,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665449888] [2024-11-12 20:41:28,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:28,908 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 20:41:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665449888] [2024-11-12 20:41:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665449888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751818277] [2024-11-12 20:41:28,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:41:28,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:28,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:28,911 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 20:41:28,912 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 20:41:28,975 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:41:28,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:41:28,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:41:28,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:29,028 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 20:41:29,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:29,063 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 20:41:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751818277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:29,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:29,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:41:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407228448] [2024-11-12 20:41:29,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:29,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:41:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:41:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:41:29,099 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-12 20:41:29,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 463 flow. Second operand has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:29,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:29,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-12 20:41:29,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:30,105 INFO L124 PetriNetUnfolderBase]: 3149/8118 cut-off events. [2024-11-12 20:41:30,105 INFO L125 PetriNetUnfolderBase]: For 4224/4418 co-relation queries the response was YES. [2024-11-12 20:41:30,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17311 conditions, 8118 events. 3149/8118 cut-off events. For 4224/4418 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 77431 event pairs, 2189 based on Foata normal form. 102/7316 useless extension candidates. Maximal degree in co-relation 17284. Up to 4659 conditions per place. [2024-11-12 20:41:30,143 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 44 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2024-11-12 20:41:30,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 114 transitions, 641 flow [2024-11-12 20:41:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:41:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:41:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1080 transitions. [2024-11-12 20:41:30,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-11-12 20:41:30,148 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 463 flow. Second operand 24 states and 1080 transitions. [2024-11-12 20:41:30,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 114 transitions, 641 flow [2024-11-12 20:41:30,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:41:30,166 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 551 flow [2024-11-12 20:41:30,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=551, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2024-11-12 20:41:30,166 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 60 predicate places. [2024-11-12 20:41:30,167 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 551 flow [2024-11-12 20:41:30,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:30,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:30,167 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:30,183 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 20:41:30,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 20:41:30,368 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:30,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1607634418, now seen corresponding path program 1 times [2024-11-12 20:41:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431046283] [2024-11-12 20:41:30,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:30,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:30,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:30,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431046283] [2024-11-12 20:41:30,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431046283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:30,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:30,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:41:30,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15490147] [2024-11-12 20:41:30,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:30,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:41:30,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:30,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:41:30,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:41:30,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-12 20:41:30,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 551 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:30,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:30,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-12 20:41:30,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:31,130 INFO L124 PetriNetUnfolderBase]: 2784/7046 cut-off events. [2024-11-12 20:41:31,130 INFO L125 PetriNetUnfolderBase]: For 3650/3844 co-relation queries the response was YES. [2024-11-12 20:41:31,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15161 conditions, 7046 events. 2784/7046 cut-off events. For 3650/3844 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65596 event pairs, 1873 based on Foata normal form. 100/6330 useless extension candidates. Maximal degree in co-relation 15131. Up to 4007 conditions per place. [2024-11-12 20:41:31,170 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 68 selfloop transitions, 7 changer transitions 20/132 dead transitions. [2024-11-12 20:41:31,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 794 flow [2024-11-12 20:41:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:41:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:41:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2024-11-12 20:41:31,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6767441860465117 [2024-11-12 20:41:31,172 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 551 flow. Second operand 5 states and 291 transitions. [2024-11-12 20:41:31,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 794 flow [2024-11-12 20:41:31,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 694 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-12 20:41:31,197 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 452 flow [2024-11-12 20:41:31,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-11-12 20:41:31,199 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 54 predicate places. [2024-11-12 20:41:31,199 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 452 flow [2024-11-12 20:41:31,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:31,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:31,200 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:31,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:41:31,200 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:31,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash 93826439, now seen corresponding path program 1 times [2024-11-12 20:41:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069724764] [2024-11-12 20:41:31,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:31,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:31,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069724764] [2024-11-12 20:41:31,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069724764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:31,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227838699] [2024-11-12 20:41:31,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:31,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:31,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:31,572 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 20:41:31,574 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 20:41:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:31,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 20:41:31,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:31,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:41:31,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:41:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:31,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:31,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-12 20:41:31,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-12 20:41:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:31,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227838699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:31,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:31,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 20:41:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459202063] [2024-11-12 20:41:31,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:31,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:41:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:41:31,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:41:31,974 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2024-11-12 20:41:31,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 452 flow. Second operand has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:31,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:31,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2024-11-12 20:41:31,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:33,033 INFO L124 PetriNetUnfolderBase]: 3118/7302 cut-off events. [2024-11-12 20:41:33,033 INFO L125 PetriNetUnfolderBase]: For 4109/4404 co-relation queries the response was YES. [2024-11-12 20:41:33,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16243 conditions, 7302 events. 3118/7302 cut-off events. For 4109/4404 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 65717 event pairs, 758 based on Foata normal form. 118/6746 useless extension candidates. Maximal degree in co-relation 16214. Up to 1675 conditions per place. [2024-11-12 20:41:33,099 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 148 selfloop transitions, 25 changer transitions 0/208 dead transitions. [2024-11-12 20:41:33,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 208 transitions, 1167 flow [2024-11-12 20:41:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:41:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:41:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 558 transitions. [2024-11-12 20:41:33,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6488372093023256 [2024-11-12 20:41:33,101 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 452 flow. Second operand 10 states and 558 transitions. [2024-11-12 20:41:33,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 208 transitions, 1167 flow [2024-11-12 20:41:33,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 208 transitions, 1127 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-12 20:41:33,125 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 542 flow [2024-11-12 20:41:33,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=542, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-11-12 20:41:33,125 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 55 predicate places. [2024-11-12 20:41:33,125 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 542 flow [2024-11-12 20:41:33,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:33,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:33,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:33,141 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 20:41:33,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 20:41:33,331 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:33,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1386378654, now seen corresponding path program 1 times [2024-11-12 20:41:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:33,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531074449] [2024-11-12 20:41:33,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:33,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:33,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531074449] [2024-11-12 20:41:33,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531074449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:33,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328110980] [2024-11-12 20:41:33,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:33,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:33,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:33,654 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 20:41:33,655 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 20:41:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:33,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 20:41:33,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:33,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:41:33,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 20:41:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:33,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:33,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-12 20:41:33,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-12 20:41:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:33,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328110980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:33,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:33,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 20:41:33,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982834115] [2024-11-12 20:41:33,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:33,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:41:33,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:41:33,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:41:33,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 86 [2024-11-12 20:41:33,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 542 flow. Second operand has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:33,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:33,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 86 [2024-11-12 20:41:33,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:34,887 INFO L124 PetriNetUnfolderBase]: 3658/8181 cut-off events. [2024-11-12 20:41:34,887 INFO L125 PetriNetUnfolderBase]: For 7001/7290 co-relation queries the response was YES. [2024-11-12 20:41:34,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19323 conditions, 8181 events. 3658/8181 cut-off events. For 7001/7290 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 72281 event pairs, 1177 based on Foata normal form. 176/7395 useless extension candidates. Maximal degree in co-relation 19294. Up to 2109 conditions per place. [2024-11-12 20:41:34,925 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 152 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-11-12 20:41:34,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 209 transitions, 1221 flow [2024-11-12 20:41:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:41:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:41:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2024-11-12 20:41:34,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-11-12 20:41:34,927 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 542 flow. Second operand 10 states and 538 transitions. [2024-11-12 20:41:34,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 209 transitions, 1221 flow [2024-11-12 20:41:34,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 209 transitions, 1206 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-12 20:41:34,948 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 603 flow [2024-11-12 20:41:34,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-11-12 20:41:34,948 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 63 predicate places. [2024-11-12 20:41:34,949 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 603 flow [2024-11-12 20:41:34,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:34,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:34,949 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-12 20:41:34,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:41:35,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 20:41:35,150 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:35,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:35,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1527489979, now seen corresponding path program 1 times [2024-11-12 20:41:35,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:35,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407613169] [2024-11-12 20:41:35,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:35,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407613169] [2024-11-12 20:41:35,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407613169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:35,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990270019] [2024-11-12 20:41:35,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:35,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:35,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:35,317 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 20:41:35,319 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 20:41:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:35,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 20:41:35,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:35,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:35,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990270019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:35,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-12 20:41:35,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182160365] [2024-11-12 20:41:35,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:35,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:41:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:35,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:41:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-12 20:41:35,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-12 20:41:35,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 603 flow. Second operand has 28 states, 28 states have (on average 43.07142857142857) internal successors, (1206), 28 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:35,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:35,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-12 20:41:35,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:36,418 INFO L124 PetriNetUnfolderBase]: 2852/7473 cut-off events. [2024-11-12 20:41:36,419 INFO L125 PetriNetUnfolderBase]: For 8593/8771 co-relation queries the response was YES. [2024-11-12 20:41:36,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17826 conditions, 7473 events. 2852/7473 cut-off events. For 8593/8771 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 72223 event pairs, 1982 based on Foata normal form. 122/6625 useless extension candidates. Maximal degree in co-relation 17795. Up to 4222 conditions per place. [2024-11-12 20:41:36,462 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 52 selfloop transitions, 72 changer transitions 0/163 dead transitions. [2024-11-12 20:41:36,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 163 transitions, 1131 flow [2024-11-12 20:41:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 20:41:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 20:41:36,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1209 transitions. [2024-11-12 20:41:36,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5406976744186046 [2024-11-12 20:41:36,465 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 603 flow. Second operand 26 states and 1209 transitions. [2024-11-12 20:41:36,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 163 transitions, 1131 flow [2024-11-12 20:41:36,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1072 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-12 20:41:36,494 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1020 flow [2024-11-12 20:41:36,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1020, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2024-11-12 20:41:36,495 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 88 predicate places. [2024-11-12 20:41:36,495 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1020 flow [2024-11-12 20:41:36,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 43.07142857142857) internal successors, (1206), 28 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:36,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:36,496 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] [2024-11-12 20:41:36,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 20:41:36,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:36,696 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:36,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:36,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1893514927, now seen corresponding path program 1 times [2024-11-12 20:41:36,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:36,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007541166] [2024-11-12 20:41:36,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:36,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:37,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:37,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007541166] [2024-11-12 20:41:37,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007541166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:37,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511173561] [2024-11-12 20:41:37,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:37,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:37,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:37,331 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 20:41:37,333 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 20:41:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:37,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 20:41:37,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:37,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 20:41:37,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:41:37,474 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:41:37,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-12 20:41:37,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-12 20:41:37,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:41:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:37,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:37,643 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_198) c_~a1~0.base) c_~a1~0.offset) 9223372039002259456)) is different from false [2024-11-12 20:41:37,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:41:37,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-12 20:41:37,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:41:37,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-12 20:41:37,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-12 20:41:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-12 20:41:37,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511173561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:37,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:37,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-11-12 20:41:37,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811345808] [2024-11-12 20:41:37,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:37,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:41:37,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:41:37,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=318, Unknown=2, NotChecked=36, Total=420 [2024-11-12 20:41:37,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-12 20:41:37,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 1020 flow. Second operand has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:37,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:37,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-12 20:41:37,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:40,694 INFO L124 PetriNetUnfolderBase]: 11573/20463 cut-off events. [2024-11-12 20:41:40,694 INFO L125 PetriNetUnfolderBase]: For 24601/25981 co-relation queries the response was YES. [2024-11-12 20:41:40,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54589 conditions, 20463 events. 11573/20463 cut-off events. For 24601/25981 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 167599 event pairs, 2686 based on Foata normal form. 600/19079 useless extension candidates. Maximal degree in co-relation 54552. Up to 3021 conditions per place. [2024-11-12 20:41:40,887 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 465 selfloop transitions, 67 changer transitions 16/574 dead transitions. [2024-11-12 20:41:40,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 574 transitions, 4504 flow [2024-11-12 20:41:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:41:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:41:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 915 transitions. [2024-11-12 20:41:40,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4433139534883721 [2024-11-12 20:41:40,889 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 1020 flow. Second operand 24 states and 915 transitions. [2024-11-12 20:41:40,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 574 transitions, 4504 flow [2024-11-12 20:41:40,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 574 transitions, 4043 flow, removed 162 selfloop flow, removed 12 redundant places. [2024-11-12 20:41:40,985 INFO L231 Difference]: Finished difference. Result has 184 places, 197 transitions, 1257 flow [2024-11-12 20:41:40,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1257, PETRI_PLACES=184, PETRI_TRANSITIONS=197} [2024-11-12 20:41:40,986 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 105 predicate places. [2024-11-12 20:41:40,986 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 197 transitions, 1257 flow [2024-11-12 20:41:40,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:40,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:40,986 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:41:41,006 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 20:41:41,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:41,187 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:41,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash 3439418, now seen corresponding path program 1 times [2024-11-12 20:41:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:41,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205526726] [2024-11-12 20:41:41,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:41,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 20:41:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205526726] [2024-11-12 20:41:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205526726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032601759] [2024-11-12 20:41:41,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:41,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:41,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:41,268 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 20:41:41,270 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 20:41:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:41,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:41:41,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:41,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:41:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032601759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:41,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-12 20:41:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58473677] [2024-11-12 20:41:41,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:41,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:41:41,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:41:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-12 20:41:41,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-12 20:41:41,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 197 transitions, 1257 flow. Second operand has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:41,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:41,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-12 20:41:41,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:43,863 INFO L124 PetriNetUnfolderBase]: 4853/11764 cut-off events. [2024-11-12 20:41:43,863 INFO L125 PetriNetUnfolderBase]: For 17942/18384 co-relation queries the response was YES. [2024-11-12 20:41:43,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30658 conditions, 11764 events. 4853/11764 cut-off events. For 17942/18384 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 116306 event pairs, 1154 based on Foata normal form. 270/10698 useless extension candidates. Maximal degree in co-relation 30616. Up to 2096 conditions per place. [2024-11-12 20:41:43,954 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 330 selfloop transitions, 65 changer transitions 14/448 dead transitions. [2024-11-12 20:41:43,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 448 transitions, 3434 flow [2024-11-12 20:41:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:41:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:41:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 894 transitions. [2024-11-12 20:41:43,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6114911080711354 [2024-11-12 20:41:43,956 INFO L175 Difference]: Start difference. First operand has 184 places, 197 transitions, 1257 flow. Second operand 17 states and 894 transitions. [2024-11-12 20:41:43,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 448 transitions, 3434 flow [2024-11-12 20:41:44,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 3308 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-11-12 20:41:44,010 INFO L231 Difference]: Finished difference. Result has 192 places, 224 transitions, 1590 flow [2024-11-12 20:41:44,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1590, PETRI_PLACES=192, PETRI_TRANSITIONS=224} [2024-11-12 20:41:44,010 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 113 predicate places. [2024-11-12 20:41:44,011 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 224 transitions, 1590 flow [2024-11-12 20:41:44,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:44,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:44,011 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] [2024-11-12 20:41:44,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 20:41:44,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:44,213 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:44,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash -28065527, now seen corresponding path program 1 times [2024-11-12 20:41:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:44,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078147250] [2024-11-12 20:41:44,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:44,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:44,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:44,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078147250] [2024-11-12 20:41:44,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078147250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:44,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015878782] [2024-11-12 20:41:44,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:44,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:44,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:44,918 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 20:41:44,919 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 20:41:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:44,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 20:41:44,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:45,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 20:41:45,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:41:45,054 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:41:45,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-12 20:41:45,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-12 20:41:45,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 20:41:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:45,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:45,273 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_234 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150| Int)) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150| v_ArrVal_234) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150|) 0)))) is different from false [2024-11-12 20:41:45,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:41:45,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-12 20:41:45,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:41:45,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-12 20:41:45,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-12 20:41:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-12 20:41:45,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015878782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:45,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:45,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-11-12 20:41:45,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722300612] [2024-11-12 20:41:45,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:45,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:41:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:45,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:41:45,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=320, Unknown=7, NotChecked=36, Total=420 [2024-11-12 20:41:45,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-12 20:41:45,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 224 transitions, 1590 flow. Second operand has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:45,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:45,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-12 20:41:45,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:48,354 INFO L124 PetriNetUnfolderBase]: 8564/15865 cut-off events. [2024-11-12 20:41:48,354 INFO L125 PetriNetUnfolderBase]: For 24461/25588 co-relation queries the response was YES. [2024-11-12 20:41:48,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45007 conditions, 15865 events. 8564/15865 cut-off events. For 24461/25588 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 130708 event pairs, 1726 based on Foata normal form. 497/15181 useless extension candidates. Maximal degree in co-relation 44964. Up to 2896 conditions per place. [2024-11-12 20:41:48,457 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 605 selfloop transitions, 71 changer transitions 0/698 dead transitions. [2024-11-12 20:41:48,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 698 transitions, 5410 flow [2024-11-12 20:41:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 20:41:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-12 20:41:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1093 transitions. [2024-11-12 20:41:48,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4236434108527132 [2024-11-12 20:41:48,459 INFO L175 Difference]: Start difference. First operand has 192 places, 224 transitions, 1590 flow. Second operand 30 states and 1093 transitions. [2024-11-12 20:41:48,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 698 transitions, 5410 flow [2024-11-12 20:41:48,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 698 transitions, 5384 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-12 20:41:48,540 INFO L231 Difference]: Finished difference. Result has 219 places, 235 transitions, 1809 flow [2024-11-12 20:41:48,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1809, PETRI_PLACES=219, PETRI_TRANSITIONS=235} [2024-11-12 20:41:48,541 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 140 predicate places. [2024-11-12 20:41:48,541 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 235 transitions, 1809 flow [2024-11-12 20:41:48,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:48,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:48,541 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 20:41:48,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 20:41:48,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-12 20:41:48,742 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:48,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:48,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1430548472, now seen corresponding path program 1 times [2024-11-12 20:41:48,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:48,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488035281] [2024-11-12 20:41:48,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:49,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488035281] [2024-11-12 20:41:49,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488035281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941783447] [2024-11-12 20:41:49,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:49,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:49,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:49,225 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 20:41:49,226 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 20:41:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:49,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 20:41:49,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:49,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 20:41:49,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:41:49,376 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:41:49,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-12 20:41:49,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-12 20:41:49,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 20:41:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:49,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:49,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:41:49,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-12 20:41:49,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:41:49,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-11-12 20:41:49,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-12 20:41:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:49,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941783447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:49,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-11-12 20:41:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281856532] [2024-11-12 20:41:49,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:49,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:41:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:41:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=350, Unknown=4, NotChecked=0, Total=420 [2024-11-12 20:41:50,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-12 20:41:50,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 235 transitions, 1809 flow. Second operand has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:50,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:50,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-12 20:41:50,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:52,705 INFO L124 PetriNetUnfolderBase]: 9172/16435 cut-off events. [2024-11-12 20:41:52,705 INFO L125 PetriNetUnfolderBase]: For 37250/37920 co-relation queries the response was YES. [2024-11-12 20:41:52,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49496 conditions, 16435 events. 9172/16435 cut-off events. For 37250/37920 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130172 event pairs, 2758 based on Foata normal form. 294/15585 useless extension candidates. Maximal degree in co-relation 49447. Up to 3417 conditions per place. [2024-11-12 20:41:52,901 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 423 selfloop transitions, 67 changer transitions 0/518 dead transitions. [2024-11-12 20:41:52,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 518 transitions, 4442 flow [2024-11-12 20:41:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:41:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:41:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 892 transitions. [2024-11-12 20:41:52,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4321705426356589 [2024-11-12 20:41:52,903 INFO L175 Difference]: Start difference. First operand has 219 places, 235 transitions, 1809 flow. Second operand 24 states and 892 transitions. [2024-11-12 20:41:52,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 518 transitions, 4442 flow [2024-11-12 20:41:52,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 518 transitions, 4192 flow, removed 25 selfloop flow, removed 17 redundant places. [2024-11-12 20:41:52,997 INFO L231 Difference]: Finished difference. Result has 229 places, 241 transitions, 1909 flow [2024-11-12 20:41:52,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1909, PETRI_PLACES=229, PETRI_TRANSITIONS=241} [2024-11-12 20:41:52,998 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 150 predicate places. [2024-11-12 20:41:52,998 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 241 transitions, 1909 flow [2024-11-12 20:41:52,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:52,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:52,999 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 20:41:53,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 20:41:53,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-12 20:41:53,199 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:53,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -870030523, now seen corresponding path program 1 times [2024-11-12 20:41:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713829900] [2024-11-12 20:41:53,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:53,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:53,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713829900] [2024-11-12 20:41:53,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713829900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:41:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836208449] [2024-11-12 20:41:53,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:53,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:41:53,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:41:53,866 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:41:53,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 20:41:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:53,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-12 20:41:53,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:41:53,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 20:41:53,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:41:53,984 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:41:53,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-12 20:41:54,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-12 20:41:54,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:41:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:54,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:41:54,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:41:54,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-12 20:41:54,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:41:54,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-11-12 20:41:54,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-12 20:41:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:41:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836208449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:41:54,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:41:54,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-11-12 20:41:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014298887] [2024-11-12 20:41:54,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:41:54,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 20:41:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:54,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 20:41:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=430, Unknown=8, NotChecked=0, Total=506 [2024-11-12 20:41:54,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-12 20:41:54,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 1909 flow. Second operand has 23 states, 23 states have (on average 25.217391304347824) internal successors, (580), 23 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:54,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:54,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-12 20:41:54,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:41:58,130 INFO L124 PetriNetUnfolderBase]: 9256/16029 cut-off events. [2024-11-12 20:41:58,131 INFO L125 PetriNetUnfolderBase]: For 32227/33161 co-relation queries the response was YES. [2024-11-12 20:41:58,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50497 conditions, 16029 events. 9256/16029 cut-off events. For 32227/33161 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 123307 event pairs, 1968 based on Foata normal form. 880/15943 useless extension candidates. Maximal degree in co-relation 50445. Up to 3359 conditions per place. [2024-11-12 20:41:58,252 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 608 selfloop transitions, 77 changer transitions 42/758 dead transitions. [2024-11-12 20:41:58,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 758 transitions, 6344 flow [2024-11-12 20:41:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-12 20:41:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-12 20:41:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1162 transitions. [2024-11-12 20:41:58,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42223837209302323 [2024-11-12 20:41:58,255 INFO L175 Difference]: Start difference. First operand has 229 places, 241 transitions, 1909 flow. Second operand 32 states and 1162 transitions. [2024-11-12 20:41:58,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 758 transitions, 6344 flow [2024-11-12 20:41:58,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 758 transitions, 6068 flow, removed 4 selfloop flow, removed 19 redundant places. [2024-11-12 20:41:58,339 INFO L231 Difference]: Finished difference. Result has 247 places, 254 transitions, 2067 flow [2024-11-12 20:41:58,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2067, PETRI_PLACES=247, PETRI_TRANSITIONS=254} [2024-11-12 20:41:58,340 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 168 predicate places. [2024-11-12 20:41:58,340 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 254 transitions, 2067 flow [2024-11-12 20:41:58,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.217391304347824) internal successors, (580), 23 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:58,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:41:58,341 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, 1] [2024-11-12 20:41:58,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-12 20:41:58,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-12 20:41:58,541 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:41:58,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:41:58,542 INFO L85 PathProgramCache]: Analyzing trace with hash -253884111, now seen corresponding path program 1 times [2024-11-12 20:41:58,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:41:58,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394883913] [2024-11-12 20:41:58,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:41:58,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:41:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:41:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 20:41:58,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:41:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394883913] [2024-11-12 20:41:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394883913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:41:58,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:41:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:41:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663607503] [2024-11-12 20:41:58,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:41:58,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:41:58,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:41:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:41:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:41:58,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-12 20:41:58,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 254 transitions, 2067 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:41:58,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:41:58,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-12 20:41:58,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:00,289 INFO L124 PetriNetUnfolderBase]: 6281/13695 cut-off events. [2024-11-12 20:42:00,290 INFO L125 PetriNetUnfolderBase]: For 32855/33189 co-relation queries the response was YES. [2024-11-12 20:42:00,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42993 conditions, 13695 events. 6281/13695 cut-off events. For 32855/33189 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 128151 event pairs, 2748 based on Foata normal form. 404/13130 useless extension candidates. Maximal degree in co-relation 42937. Up to 5977 conditions per place. [2024-11-12 20:42:00,406 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 249 selfloop transitions, 14 changer transitions 15/322 dead transitions. [2024-11-12 20:42:00,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 322 transitions, 3048 flow [2024-11-12 20:42:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:42:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:42:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-11-12 20:42:00,408 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.688953488372093 [2024-11-12 20:42:00,408 INFO L175 Difference]: Start difference. First operand has 247 places, 254 transitions, 2067 flow. Second operand 4 states and 237 transitions. [2024-11-12 20:42:00,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 322 transitions, 3048 flow [2024-11-12 20:42:00,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 322 transitions, 2877 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-11-12 20:42:00,548 INFO L231 Difference]: Finished difference. Result has 227 places, 245 transitions, 1853 flow [2024-11-12 20:42:00,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1853, PETRI_PLACES=227, PETRI_TRANSITIONS=245} [2024-11-12 20:42:00,548 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 148 predicate places. [2024-11-12 20:42:00,548 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 245 transitions, 1853 flow [2024-11-12 20:42:00,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:00,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:00,549 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:42:00,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 20:42:00,549 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:00,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1367733062, now seen corresponding path program 1 times [2024-11-12 20:42:00,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:00,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860320220] [2024-11-12 20:42:00,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:00,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 20:42:00,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860320220] [2024-11-12 20:42:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860320220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594540834] [2024-11-12 20:42:00,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:00,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:00,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:00,623 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:00,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 20:42:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:00,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:42:00,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:42:00,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:42:00,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594540834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:00,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:00,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-12 20:42:00,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756024094] [2024-11-12 20:42:00,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:00,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:42:00,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:00,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:42:00,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-12 20:42:01,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-12 20:42:01,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 245 transitions, 1853 flow. Second operand has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:01,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:01,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-12 20:42:01,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:02,961 INFO L124 PetriNetUnfolderBase]: 4196/9871 cut-off events. [2024-11-12 20:42:02,961 INFO L125 PetriNetUnfolderBase]: For 22784/23284 co-relation queries the response was YES. [2024-11-12 20:42:03,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29001 conditions, 9871 events. 4196/9871 cut-off events. For 22784/23284 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 91675 event pairs, 132 based on Foata normal form. 208/9192 useless extension candidates. Maximal degree in co-relation 28949. Up to 2104 conditions per place. [2024-11-12 20:42:03,048 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 297 selfloop transitions, 63 changer transitions 44/447 dead transitions. [2024-11-12 20:42:03,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 447 transitions, 3910 flow [2024-11-12 20:42:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:42:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:42:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 884 transitions. [2024-11-12 20:42:03,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-11-12 20:42:03,050 INFO L175 Difference]: Start difference. First operand has 227 places, 245 transitions, 1853 flow. Second operand 17 states and 884 transitions. [2024-11-12 20:42:03,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 447 transitions, 3910 flow [2024-11-12 20:42:03,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 447 transitions, 3782 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-12 20:42:03,337 INFO L231 Difference]: Finished difference. Result has 233 places, 236 transitions, 1855 flow [2024-11-12 20:42:03,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1855, PETRI_PLACES=233, PETRI_TRANSITIONS=236} [2024-11-12 20:42:03,338 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 154 predicate places. [2024-11-12 20:42:03,338 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 236 transitions, 1855 flow [2024-11-12 20:42:03,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:03,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:03,339 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, 1] [2024-11-12 20:42:03,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 20:42:03,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-12 20:42:03,540 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:03,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1397329491, now seen corresponding path program 1 times [2024-11-12 20:42:03,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:03,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241173253] [2024-11-12 20:42:03,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:03,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:42:03,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:03,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241173253] [2024-11-12 20:42:03,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241173253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:03,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224079086] [2024-11-12 20:42:03,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:03,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:03,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:03,742 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:03,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 20:42:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:03,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:42:03,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:03,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:42:03,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 20:42:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:42:03,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:03,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-12 20:42:03,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-12 20:42:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:42:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224079086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:03,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-12 20:42:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302356135] [2024-11-12 20:42:03,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:03,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:42:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:42:03,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:42:04,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-11-12 20:42:04,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 236 transitions, 1855 flow. Second operand has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:04,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:04,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-11-12 20:42:04,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:05,551 INFO L124 PetriNetUnfolderBase]: 6240/11678 cut-off events. [2024-11-12 20:42:05,551 INFO L125 PetriNetUnfolderBase]: For 27124/27874 co-relation queries the response was YES. [2024-11-12 20:42:05,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36706 conditions, 11678 events. 6240/11678 cut-off events. For 27124/27874 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 92313 event pairs, 1392 based on Foata normal form. 330/11547 useless extension candidates. Maximal degree in co-relation 36655. Up to 2956 conditions per place. [2024-11-12 20:42:05,657 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 480 selfloop transitions, 62 changer transitions 0/576 dead transitions. [2024-11-12 20:42:05,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 576 transitions, 5133 flow [2024-11-12 20:42:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:42:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:42:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 718 transitions. [2024-11-12 20:42:05,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5963455149501661 [2024-11-12 20:42:05,658 INFO L175 Difference]: Start difference. First operand has 233 places, 236 transitions, 1855 flow. Second operand 14 states and 718 transitions. [2024-11-12 20:42:05,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 576 transitions, 5133 flow [2024-11-12 20:42:05,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 576 transitions, 5054 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-12 20:42:05,887 INFO L231 Difference]: Finished difference. Result has 238 places, 240 transitions, 1975 flow [2024-11-12 20:42:05,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1975, PETRI_PLACES=238, PETRI_TRANSITIONS=240} [2024-11-12 20:42:05,888 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-11-12 20:42:05,888 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 1975 flow [2024-11-12 20:42:05,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:05,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:05,888 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, 1, 1] [2024-11-12 20:42:05,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-12 20:42:06,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:06,089 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:06,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash 367542107, now seen corresponding path program 1 times [2024-11-12 20:42:06,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:06,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136581625] [2024-11-12 20:42:06,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:06,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:42:06,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136581625] [2024-11-12 20:42:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136581625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136044705] [2024-11-12 20:42:06,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:06,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:06,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:06,370 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:06,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 20:42:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:06,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 20:42:06,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:06,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:42:06,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 20:42:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:42:06,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:06,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-12 20:42:06,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-12 20:42:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:42:06,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136044705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:06,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:06,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-12 20:42:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080876733] [2024-11-12 20:42:06,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:06,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 20:42:06,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 20:42:06,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-12 20:42:06,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 86 [2024-11-12 20:42:06,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 240 transitions, 1975 flow. Second operand has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:06,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:06,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 86 [2024-11-12 20:42:06,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:08,654 INFO L124 PetriNetUnfolderBase]: 6006/11460 cut-off events. [2024-11-12 20:42:08,655 INFO L125 PetriNetUnfolderBase]: For 30684/31420 co-relation queries the response was YES. [2024-11-12 20:42:08,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38544 conditions, 11460 events. 6006/11460 cut-off events. For 30684/31420 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 92266 event pairs, 1476 based on Foata normal form. 580/11525 useless extension candidates. Maximal degree in co-relation 38488. Up to 3112 conditions per place. [2024-11-12 20:42:08,739 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 431 selfloop transitions, 64 changer transitions 87/620 dead transitions. [2024-11-12 20:42:08,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 620 transitions, 5627 flow [2024-11-12 20:42:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:42:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:42:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 777 transitions. [2024-11-12 20:42:08,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6023255813953489 [2024-11-12 20:42:08,741 INFO L175 Difference]: Start difference. First operand has 238 places, 240 transitions, 1975 flow. Second operand 15 states and 777 transitions. [2024-11-12 20:42:08,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 620 transitions, 5627 flow [2024-11-12 20:42:08,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 620 transitions, 5535 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-12 20:42:08,826 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 2096 flow [2024-11-12 20:42:08,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2096, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2024-11-12 20:42:08,827 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 171 predicate places. [2024-11-12 20:42:08,827 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 2096 flow [2024-11-12 20:42:08,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:08,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:08,828 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:42:08,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-12 20:42:09,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-12 20:42:09,028 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:09,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:09,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1429778302, now seen corresponding path program 1 times [2024-11-12 20:42:09,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:09,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095605075] [2024-11-12 20:42:09,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095605075] [2024-11-12 20:42:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095605075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:09,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132216935] [2024-11-12 20:42:09,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:09,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:09,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:09,148 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:09,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 20:42:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:09,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:42:09,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:09,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132216935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:09,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:09,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-12 20:42:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76296521] [2024-11-12 20:42:09,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:09,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 20:42:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:09,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 20:42:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-12 20:42:09,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-12 20:42:09,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 2096 flow. Second operand has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:09,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:09,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-12 20:42:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:11,780 INFO L124 PetriNetUnfolderBase]: 6928/15898 cut-off events. [2024-11-12 20:42:11,780 INFO L125 PetriNetUnfolderBase]: For 46549/47089 co-relation queries the response was YES. [2024-11-12 20:42:11,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54115 conditions, 15898 events. 6928/15898 cut-off events. For 46549/47089 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 157081 event pairs, 3226 based on Foata normal form. 314/15858 useless extension candidates. Maximal degree in co-relation 54055. Up to 6481 conditions per place. [2024-11-12 20:42:11,882 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 222 selfloop transitions, 100 changer transitions 48/418 dead transitions. [2024-11-12 20:42:11,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 418 transitions, 4093 flow [2024-11-12 20:42:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:42:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:42:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 528 transitions. [2024-11-12 20:42:11,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-11-12 20:42:11,883 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 2096 flow. Second operand 10 states and 528 transitions. [2024-11-12 20:42:11,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 418 transitions, 4093 flow [2024-11-12 20:42:12,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 418 transitions, 3890 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-11-12 20:42:12,049 INFO L231 Difference]: Finished difference. Result has 255 places, 253 transitions, 2273 flow [2024-11-12 20:42:12,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2273, PETRI_PLACES=255, PETRI_TRANSITIONS=253} [2024-11-12 20:42:12,050 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 176 predicate places. [2024-11-12 20:42:12,050 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 253 transitions, 2273 flow [2024-11-12 20:42:12,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:12,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:12,050 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, 1, 1, 1] [2024-11-12 20:42:12,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-12 20:42:12,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-12 20:42:12,251 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:12,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash -543778631, now seen corresponding path program 1 times [2024-11-12 20:42:12,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:12,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966649855] [2024-11-12 20:42:12,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:12,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 20:42:12,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966649855] [2024-11-12 20:42:12,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966649855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:42:12,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:42:12,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:42:12,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251773735] [2024-11-12 20:42:12,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:42:12,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:42:12,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:12,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:42:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:42:12,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-12 20:42:12,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 253 transitions, 2273 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:12,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:12,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-12 20:42:12,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:14,729 INFO L124 PetriNetUnfolderBase]: 8890/18351 cut-off events. [2024-11-12 20:42:14,729 INFO L125 PetriNetUnfolderBase]: For 52261/52674 co-relation queries the response was YES. [2024-11-12 20:42:14,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63206 conditions, 18351 events. 8890/18351 cut-off events. For 52261/52674 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 170392 event pairs, 3966 based on Foata normal form. 541/18472 useless extension candidates. Maximal degree in co-relation 63145. Up to 8293 conditions per place. [2024-11-12 20:42:14,866 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 237 selfloop transitions, 10 changer transitions 64/350 dead transitions. [2024-11-12 20:42:14,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 350 transitions, 3655 flow [2024-11-12 20:42:14,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:42:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:42:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2024-11-12 20:42:14,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6831395348837209 [2024-11-12 20:42:14,867 INFO L175 Difference]: Start difference. First operand has 255 places, 253 transitions, 2273 flow. Second operand 4 states and 235 transitions. [2024-11-12 20:42:14,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 350 transitions, 3655 flow [2024-11-12 20:42:15,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 350 transitions, 3611 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:42:15,078 INFO L231 Difference]: Finished difference. Result has 252 places, 218 transitions, 1892 flow [2024-11-12 20:42:15,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1892, PETRI_PLACES=252, PETRI_TRANSITIONS=218} [2024-11-12 20:42:15,078 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 173 predicate places. [2024-11-12 20:42:15,079 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 1892 flow [2024-11-12 20:42:15,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:15,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:15,079 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] [2024-11-12 20:42:15,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-12 20:42:15,079 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:15,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash 437382995, now seen corresponding path program 1 times [2024-11-12 20:42:15,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:15,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506964015] [2024-11-12 20:42:15,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:15,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:15,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506964015] [2024-11-12 20:42:15,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506964015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:15,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013489009] [2024-11-12 20:42:15,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:15,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:15,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:15,192 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:15,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 20:42:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:15,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 20:42:15,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:15,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:15,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013489009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:15,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-12 20:42:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472551612] [2024-11-12 20:42:15,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:15,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 20:42:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 20:42:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-12 20:42:15,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-12 20:42:15,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 218 transitions, 1892 flow. Second operand has 20 states, 20 states have (on average 41.85) internal successors, (837), 20 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:15,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:15,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-12 20:42:15,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:17,288 INFO L124 PetriNetUnfolderBase]: 4480/10286 cut-off events. [2024-11-12 20:42:17,288 INFO L125 PetriNetUnfolderBase]: For 31305/31499 co-relation queries the response was YES. [2024-11-12 20:42:17,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36194 conditions, 10286 events. 4480/10286 cut-off events. For 31305/31499 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 94498 event pairs, 2484 based on Foata normal form. 90/10137 useless extension candidates. Maximal degree in co-relation 36133. Up to 5059 conditions per place. [2024-11-12 20:42:17,363 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 79 selfloop transitions, 92 changer transitions 99/313 dead transitions. [2024-11-12 20:42:17,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 313 transitions, 3048 flow [2024-11-12 20:42:17,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:42:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:42:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 524 transitions. [2024-11-12 20:42:17,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2024-11-12 20:42:17,365 INFO L175 Difference]: Start difference. First operand has 252 places, 218 transitions, 1892 flow. Second operand 10 states and 524 transitions. [2024-11-12 20:42:17,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 313 transitions, 3048 flow [2024-11-12 20:42:17,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 313 transitions, 3003 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-12 20:42:17,470 INFO L231 Difference]: Finished difference. Result has 237 places, 214 transitions, 1990 flow [2024-11-12 20:42:17,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=237, PETRI_TRANSITIONS=214} [2024-11-12 20:42:17,470 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 158 predicate places. [2024-11-12 20:42:17,471 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 214 transitions, 1990 flow [2024-11-12 20:42:17,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.85) internal successors, (837), 20 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:17,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:17,471 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:42:17,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-12 20:42:17,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:17,672 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:17,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:17,672 INFO L85 PathProgramCache]: Analyzing trace with hash -69811793, now seen corresponding path program 2 times [2024-11-12 20:42:17,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:17,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270332435] [2024-11-12 20:42:17,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:17,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-12 20:42:17,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270332435] [2024-11-12 20:42:17,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270332435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401452537] [2024-11-12 20:42:17,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:42:17,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:17,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:17,733 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:17,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 20:42:17,821 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:42:17,822 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:42:17,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:42:17,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 20:42:17,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 20:42:17,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401452537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:17,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:17,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-11-12 20:42:17,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583307127] [2024-11-12 20:42:17,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:17,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:42:17,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:42:17,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:42:17,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-12 20:42:17,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 214 transitions, 1990 flow. Second operand has 9 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:17,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:17,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-12 20:42:17,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:19,624 INFO L124 PetriNetUnfolderBase]: 4995/11288 cut-off events. [2024-11-12 20:42:19,624 INFO L125 PetriNetUnfolderBase]: For 29449/29920 co-relation queries the response was YES. [2024-11-12 20:42:19,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38772 conditions, 11288 events. 4995/11288 cut-off events. For 29449/29920 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 104412 event pairs, 899 based on Foata normal form. 359/11599 useless extension candidates. Maximal degree in co-relation 38713. Up to 2264 conditions per place. [2024-11-12 20:42:19,990 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 376 selfloop transitions, 9 changer transitions 0/429 dead transitions. [2024-11-12 20:42:19,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 429 transitions, 4142 flow [2024-11-12 20:42:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:42:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 20:42:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2024-11-12 20:42:19,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7235142118863049 [2024-11-12 20:42:19,991 INFO L175 Difference]: Start difference. First operand has 237 places, 214 transitions, 1990 flow. Second operand 9 states and 560 transitions. [2024-11-12 20:42:19,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 429 transitions, 4142 flow [2024-11-12 20:42:20,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 429 transitions, 3882 flow, removed 37 selfloop flow, removed 14 redundant places. [2024-11-12 20:42:20,075 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 1816 flow [2024-11-12 20:42:20,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1816, PETRI_PLACES=223, PETRI_TRANSITIONS=216} [2024-11-12 20:42:20,076 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 144 predicate places. [2024-11-12 20:42:20,076 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 1816 flow [2024-11-12 20:42:20,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:20,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:20,076 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:42:20,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-12 20:42:20,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:20,277 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:20,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:20,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2130770743, now seen corresponding path program 1 times [2024-11-12 20:42:20,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:20,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193964048] [2024-11-12 20:42:20,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:42:20,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:20,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193964048] [2024-11-12 20:42:20,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193964048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742769723] [2024-11-12 20:42:20,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:20,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:20,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:20,641 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:20,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 20:42:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:20,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-12 20:42:20,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:20,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 20:42:20,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-12 20:42:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:20,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:20,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-12 20:42:20,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-11-12 20:42:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:20,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742769723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:20,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:20,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-12 20:42:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141830632] [2024-11-12 20:42:20,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:20,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 20:42:20,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:20,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 20:42:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-12 20:42:21,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-11-12 20:42:21,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 216 transitions, 1816 flow. Second operand has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:21,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:21,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-11-12 20:42:21,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:23,160 INFO L124 PetriNetUnfolderBase]: 5289/11444 cut-off events. [2024-11-12 20:42:23,160 INFO L125 PetriNetUnfolderBase]: For 28803/29346 co-relation queries the response was YES. [2024-11-12 20:42:23,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39188 conditions, 11444 events. 5289/11444 cut-off events. For 28803/29346 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 102498 event pairs, 1403 based on Foata normal form. 345/11523 useless extension candidates. Maximal degree in co-relation 39136. Up to 2338 conditions per place. [2024-11-12 20:42:23,241 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 366 selfloop transitions, 56 changer transitions 30/493 dead transitions. [2024-11-12 20:42:23,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 493 transitions, 4462 flow [2024-11-12 20:42:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 20:42:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 20:42:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 807 transitions. [2024-11-12 20:42:23,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5864825581395349 [2024-11-12 20:42:23,242 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 1816 flow. Second operand 16 states and 807 transitions. [2024-11-12 20:42:23,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 493 transitions, 4462 flow [2024-11-12 20:42:23,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 493 transitions, 4448 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:42:23,329 INFO L231 Difference]: Finished difference. Result has 236 places, 223 transitions, 2009 flow [2024-11-12 20:42:23,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2009, PETRI_PLACES=236, PETRI_TRANSITIONS=223} [2024-11-12 20:42:23,330 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 157 predicate places. [2024-11-12 20:42:23,330 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 223 transitions, 2009 flow [2024-11-12 20:42:23,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:23,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:23,330 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:42:23,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-12 20:42:23,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:23,531 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:23,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:23,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1629352626, now seen corresponding path program 1 times [2024-11-12 20:42:23,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:23,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134101135] [2024-11-12 20:42:23,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:23,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:42:23,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:23,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134101135] [2024-11-12 20:42:23,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134101135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:23,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084133332] [2024-11-12 20:42:23,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:23,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:23,902 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:23,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-12 20:42:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:23,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 20:42:24,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:24,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 20:42:24,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-12 20:42:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:24,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:24,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-12 20:42:24,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-12 20:42:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:42:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084133332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:24,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:24,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-12 20:42:24,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779294134] [2024-11-12 20:42:24,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:24,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 20:42:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 20:42:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-12 20:42:24,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 86 [2024-11-12 20:42:24,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 223 transitions, 2009 flow. Second operand has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:24,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:24,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 86 [2024-11-12 20:42:24,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:42:26,427 INFO L124 PetriNetUnfolderBase]: 5779/12056 cut-off events. [2024-11-12 20:42:26,428 INFO L125 PetriNetUnfolderBase]: For 36207/36770 co-relation queries the response was YES. [2024-11-12 20:42:26,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42933 conditions, 12056 events. 5779/12056 cut-off events. For 36207/36770 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 105690 event pairs, 1805 based on Foata normal form. 363/12137 useless extension candidates. Maximal degree in co-relation 42877. Up to 2806 conditions per place. [2024-11-12 20:42:26,528 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 353 selfloop transitions, 52 changer transitions 15/459 dead transitions. [2024-11-12 20:42:26,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 459 transitions, 4318 flow [2024-11-12 20:42:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:42:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:42:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 720 transitions. [2024-11-12 20:42:26,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-12 20:42:26,530 INFO L175 Difference]: Start difference. First operand has 236 places, 223 transitions, 2009 flow. Second operand 15 states and 720 transitions. [2024-11-12 20:42:26,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 459 transitions, 4318 flow [2024-11-12 20:42:26,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 459 transitions, 4267 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-12 20:42:26,635 INFO L231 Difference]: Finished difference. Result has 242 places, 223 transitions, 2077 flow [2024-11-12 20:42:26,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2077, PETRI_PLACES=242, PETRI_TRANSITIONS=223} [2024-11-12 20:42:26,635 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 163 predicate places. [2024-11-12 20:42:26,635 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 223 transitions, 2077 flow [2024-11-12 20:42:26,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:26,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:42:26,636 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:42:26,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-12 20:42:26,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-12 20:42:26,837 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-12 20:42:26,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:42:26,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1695140160, now seen corresponding path program 2 times [2024-11-12 20:42:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:42:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398298518] [2024-11-12 20:42:26,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:42:26,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:42:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:42:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-12 20:42:26,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:42:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398298518] [2024-11-12 20:42:26,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398298518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:42:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007977118] [2024-11-12 20:42:26,897 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:42:26,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:42:26,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:42:26,899 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:42:26,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-12 20:42:27,001 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:42:27,002 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:42:27,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:42:27,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:42:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 20:42:27,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:42:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 20:42:27,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007977118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:42:27,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:42:27,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-11-12 20:42:27,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748025837] [2024-11-12 20:42:27,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:42:27,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:42:27,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:42:27,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:42:27,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:42:27,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-12 20:42:27,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 223 transitions, 2077 flow. Second operand has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:42:27,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:42:27,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-12 20:42:27,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand