./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:37:11,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:37:11,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:37:11,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:37:11,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:37:11,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:37:11,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:37:11,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:37:11,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:37:11,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:37:11,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:37:11,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:37:11,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:37:11,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:37:11,885 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:37:11,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:37:11,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:37:11,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:37:11,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:37:11,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:37:11,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:37:11,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:37:11,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:37:11,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:37:11,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:37:11,891 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:37:11,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:37:11,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:37:11,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:37:11,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:37:11,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:37:11,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:37:11,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:37:11,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:37:11,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:37:11,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:37:11,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:37:11,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:37:11,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:37:11,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:37:11,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:37:11,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:37:11,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:37:11,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:37:11,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2024-10-24 23:37:12,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:37:12,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:37:12,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:37:12,085 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:37:12,086 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:37:12,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-10-24 23:37:13,271 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:37:13,431 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:37:13,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2024-10-24 23:37:13,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4620e30/ec0f129f6f5d4e7cb5cc6d681eb6b21d/FLAG4decfb0c5 [2024-10-24 23:37:13,837 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4620e30/ec0f129f6f5d4e7cb5cc6d681eb6b21d [2024-10-24 23:37:13,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:37:13,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:37:13,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:37:13,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:37:13,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:37:13,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:13" (1/1) ... [2024-10-24 23:37:13,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebe421f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:13, skipping insertion in model container [2024-10-24 23:37:13,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:13" (1/1) ... [2024-10-24 23:37:13,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:37:14,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:37:14,063 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:37:14,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:37:14,094 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:37:14,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14 WrapperNode [2024-10-24 23:37:14,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:37:14,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:37:14,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:37:14,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:37:14,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,122 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 202 [2024-10-24 23:37:14,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:37:14,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:37:14,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:37:14,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:37:14,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,144 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-24 23:37:14,144 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:37:14,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:37:14,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:37:14,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:37:14,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (1/1) ... [2024-10-24 23:37:14,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:37:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:14,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:37:14,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:37:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:37:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:37:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:37:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:37:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:37:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:37:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:37:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:37:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:37:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:37:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:37:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:37:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:37:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:37:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:37:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:37:14,230 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:37:14,323 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:37:14,324 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:37:14,685 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:37:14,686 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:37:14,918 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:37:14,918 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 23:37:14,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:14 BoogieIcfgContainer [2024-10-24 23:37:14,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:37:14,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:37:14,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:37:14,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:37:14,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:37:13" (1/3) ... [2024-10-24 23:37:14,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112db611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:14, skipping insertion in model container [2024-10-24 23:37:14,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:14" (2/3) ... [2024-10-24 23:37:14,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112db611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:14, skipping insertion in model container [2024-10-24 23:37:14,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:14" (3/3) ... [2024-10-24 23:37:14,926 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-10-24 23:37:14,940 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:37:14,940 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-24 23:37:14,940 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:37:14,972 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:37:15,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2024-10-24 23:37:15,020 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-10-24 23:37:15,021 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:37:15,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-10-24 23:37:15,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2024-10-24 23:37:15,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 129 flow [2024-10-24 23:37:15,038 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:37:15,043 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;@65d9437a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:37:15,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-24 23:37:15,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:37:15,046 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:37:15,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:37:15,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:15,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:37:15,047 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:15,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash 770478, now seen corresponding path program 1 times [2024-10-24 23:37:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863197946] [2024-10-24 23:37:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:15,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:15,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863197946] [2024-10-24 23:37:15,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863197946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:15,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:15,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488145044] [2024-10-24 23:37:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:15,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:15,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:15,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-24 23:37:15,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:15,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:15,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-24 23:37:15,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:15,703 INFO L124 PetriNetUnfolderBase]: 1728/2695 cut-off events. [2024-10-24 23:37:15,703 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-24 23:37:15,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 2695 events. 1728/2695 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14562 event pairs, 995 based on Foata normal form. 3/1816 useless extension candidates. Maximal degree in co-relation 4712. Up to 2276 conditions per place. [2024-10-24 23:37:15,722 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 41 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-10-24 23:37:15,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 249 flow [2024-10-24 23:37:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-10-24 23:37:15,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2024-10-24 23:37:15,734 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 4 states and 129 transitions. [2024-10-24 23:37:15,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 249 flow [2024-10-24 23:37:15,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:37:15,740 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 208 flow [2024-10-24 23:37:15,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2024-10-24 23:37:15,745 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-10-24 23:37:15,746 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 208 flow [2024-10-24 23:37:15,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:15,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:15,746 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:37:15,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:37:15,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:15,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1479239291, now seen corresponding path program 1 times [2024-10-24 23:37:15,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:15,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555998610] [2024-10-24 23:37:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:15,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:15,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555998610] [2024-10-24 23:37:15,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555998610] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:15,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219025411] [2024-10-24 23:37:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:15,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:15,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:15,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:15,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:37:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:16,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:16,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:16,045 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:37:16,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219025411] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:16,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:37:16,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:37:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308216327] [2024-10-24 23:37:16,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:16,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:37:16,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:16,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:37:16,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:37:16,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-24 23:37:16,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:16,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:16,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-24 23:37:16,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:16,294 INFO L124 PetriNetUnfolderBase]: 1728/2692 cut-off events. [2024-10-24 23:37:16,294 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-24 23:37:16,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5088 conditions, 2692 events. 1728/2692 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14544 event pairs, 995 based on Foata normal form. 3/1818 useless extension candidates. Maximal degree in co-relation 5015. Up to 2261 conditions per place. [2024-10-24 23:37:16,307 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 31 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-10-24 23:37:16,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 292 flow [2024-10-24 23:37:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:37:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:37:16,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-10-24 23:37:16,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-10-24 23:37:16,310 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 208 flow. Second operand 6 states and 159 transitions. [2024-10-24 23:37:16,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 292 flow [2024-10-24 23:37:16,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:37:16,312 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 230 flow [2024-10-24 23:37:16,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-10-24 23:37:16,314 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-10-24 23:37:16,314 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 230 flow [2024-10-24 23:37:16,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:16,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:16,315 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:37:16,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:16,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:16,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:16,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1388221465, now seen corresponding path program 1 times [2024-10-24 23:37:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962418483] [2024-10-24 23:37:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:16,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:16,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962418483] [2024-10-24 23:37:16,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962418483] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:16,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772143442] [2024-10-24 23:37:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:16,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:16,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:16,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:16,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:37:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:16,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:16,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:16,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772143442] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:16,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:16,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:37:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209628627] [2024-10-24 23:37:16,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:16,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:37:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:37:16,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:37:16,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-24 23:37:16,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:16,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:16,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-24 23:37:16,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:17,042 INFO L124 PetriNetUnfolderBase]: 1737/2728 cut-off events. [2024-10-24 23:37:17,043 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-10-24 23:37:17,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2728 events. 1737/2728 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14903 event pairs, 995 based on Foata normal form. 9/1860 useless extension candidates. Maximal degree in co-relation 5017. Up to 2276 conditions per place. [2024-10-24 23:37:17,095 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 38 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2024-10-24 23:37:17,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 554 flow [2024-10-24 23:37:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:37:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:37:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-10-24 23:37:17,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-10-24 23:37:17,101 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 230 flow. Second operand 10 states and 264 transitions. [2024-10-24 23:37:17,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 554 flow [2024-10-24 23:37:17,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 471 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-24 23:37:17,104 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 445 flow [2024-10-24 23:37:17,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2024-10-24 23:37:17,105 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-24 23:37:17,105 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 445 flow [2024-10-24 23:37:17,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:17,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:17,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:17,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:37:17,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 23:37:17,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:17,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:17,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2068068255, now seen corresponding path program 1 times [2024-10-24 23:37:17,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:17,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478360400] [2024-10-24 23:37:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:17,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:17,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:17,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478360400] [2024-10-24 23:37:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478360400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:17,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:17,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852286031] [2024-10-24 23:37:17,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:17,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:17,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-10-24 23:37:17,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:17,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:17,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-10-24 23:37:17,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:17,592 INFO L124 PetriNetUnfolderBase]: 2009/3084 cut-off events. [2024-10-24 23:37:17,592 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-10-24 23:37:17,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5978 conditions, 3084 events. 2009/3084 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16788 event pairs, 829 based on Foata normal form. 86/2159 useless extension candidates. Maximal degree in co-relation 5880. Up to 1981 conditions per place. [2024-10-24 23:37:17,607 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 87 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-10-24 23:37:17,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 660 flow [2024-10-24 23:37:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:17,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-10-24 23:37:17,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2024-10-24 23:37:17,610 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 445 flow. Second operand 4 states and 143 transitions. [2024-10-24 23:37:17,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 660 flow [2024-10-24 23:37:17,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 623 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:37:17,615 INFO L231 Difference]: Finished difference. Result has 68 places, 89 transitions, 412 flow [2024-10-24 23:37:17,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=68, PETRI_TRANSITIONS=89} [2024-10-24 23:37:17,616 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-24 23:37:17,616 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 89 transitions, 412 flow [2024-10-24 23:37:17,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:17,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:17,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:17,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:37:17,617 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:17,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash -314392714, now seen corresponding path program 1 times [2024-10-24 23:37:17,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:17,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951343206] [2024-10-24 23:37:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:17,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:17,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:17,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951343206] [2024-10-24 23:37:17,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951343206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:17,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:17,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510779535] [2024-10-24 23:37:17,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:17,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:17,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:17,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:17,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-10-24 23:37:17,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 89 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:17,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:17,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-10-24 23:37:17,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:17,941 INFO L124 PetriNetUnfolderBase]: 3164/4652 cut-off events. [2024-10-24 23:37:17,942 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-10-24 23:37:17,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9464 conditions, 4652 events. 3164/4652 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24920 event pairs, 657 based on Foata normal form. 86/3558 useless extension candidates. Maximal degree in co-relation 9370. Up to 2383 conditions per place. [2024-10-24 23:37:17,966 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 112 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-10-24 23:37:17,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 738 flow [2024-10-24 23:37:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-10-24 23:37:17,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-10-24 23:37:17,968 INFO L175 Difference]: Start difference. First operand has 68 places, 89 transitions, 412 flow. Second operand 4 states and 168 transitions. [2024-10-24 23:37:17,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 738 flow [2024-10-24 23:37:17,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 131 transitions, 728 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:37:17,972 INFO L231 Difference]: Finished difference. Result has 70 places, 91 transitions, 426 flow [2024-10-24 23:37:17,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=70, PETRI_TRANSITIONS=91} [2024-10-24 23:37:17,973 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-10-24 23:37:17,973 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 91 transitions, 426 flow [2024-10-24 23:37:17,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:17,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:17,974 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:17,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:37:17,974 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:17,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1767512434, now seen corresponding path program 1 times [2024-10-24 23:37:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:17,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060780169] [2024-10-24 23:37:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:18,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:18,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060780169] [2024-10-24 23:37:18,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060780169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:18,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:18,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642417476] [2024-10-24 23:37:18,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:18,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:18,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:18,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:18,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-10-24 23:37:18,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:18,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:18,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-10-24 23:37:18,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:18,432 INFO L124 PetriNetUnfolderBase]: 5476/8026 cut-off events. [2024-10-24 23:37:18,432 INFO L125 PetriNetUnfolderBase]: For 1195/1297 co-relation queries the response was YES. [2024-10-24 23:37:18,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16805 conditions, 8026 events. 5476/8026 cut-off events. For 1195/1297 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45427 event pairs, 1108 based on Foata normal form. 152/6208 useless extension candidates. Maximal degree in co-relation 16709. Up to 4449 conditions per place. [2024-10-24 23:37:18,469 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 116 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-10-24 23:37:18,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 779 flow [2024-10-24 23:37:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-10-24 23:37:18,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2024-10-24 23:37:18,472 INFO L175 Difference]: Start difference. First operand has 70 places, 91 transitions, 426 flow. Second operand 4 states and 167 transitions. [2024-10-24 23:37:18,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 779 flow [2024-10-24 23:37:18,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 134 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:18,476 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 446 flow [2024-10-24 23:37:18,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2024-10-24 23:37:18,478 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-10-24 23:37:18,478 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 446 flow [2024-10-24 23:37:18,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:18,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:18,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:18,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:37:18,479 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:18,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:18,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1456205597, now seen corresponding path program 1 times [2024-10-24 23:37:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:18,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070392675] [2024-10-24 23:37:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:18,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:18,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070392675] [2024-10-24 23:37:18,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070392675] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:18,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:18,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:18,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251634262] [2024-10-24 23:37:18,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:18,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:18,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:18,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:18,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-10-24 23:37:18,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:18,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:18,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-10-24 23:37:18,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:19,206 INFO L124 PetriNetUnfolderBase]: 8504/12528 cut-off events. [2024-10-24 23:37:19,206 INFO L125 PetriNetUnfolderBase]: For 3516/3966 co-relation queries the response was YES. [2024-10-24 23:37:19,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27627 conditions, 12528 events. 8504/12528 cut-off events. For 3516/3966 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 74671 event pairs, 2163 based on Foata normal form. 224/10503 useless extension candidates. Maximal degree in co-relation 27529. Up to 6413 conditions per place. [2024-10-24 23:37:19,259 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 119 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-10-24 23:37:19,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 824 flow [2024-10-24 23:37:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-10-24 23:37:19,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-10-24 23:37:19,261 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 446 flow. Second operand 4 states and 164 transitions. [2024-10-24 23:37:19,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 824 flow [2024-10-24 23:37:19,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:19,265 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 466 flow [2024-10-24 23:37:19,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2024-10-24 23:37:19,266 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-10-24 23:37:19,266 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 466 flow [2024-10-24 23:37:19,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:19,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:19,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:19,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:37:19,266 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:19,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash 130547706, now seen corresponding path program 1 times [2024-10-24 23:37:19,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:19,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748404302] [2024-10-24 23:37:19,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:19,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:37:19,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:19,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748404302] [2024-10-24 23:37:19,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748404302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:19,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:19,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:19,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209200636] [2024-10-24 23:37:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:19,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:19,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:19,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:19,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:37:19,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:19,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:19,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:37:19,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:20,225 INFO L124 PetriNetUnfolderBase]: 9178/14736 cut-off events. [2024-10-24 23:37:20,225 INFO L125 PetriNetUnfolderBase]: For 4978/5117 co-relation queries the response was YES. [2024-10-24 23:37:20,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33377 conditions, 14736 events. 9178/14736 cut-off events. For 4978/5117 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 101326 event pairs, 6652 based on Foata normal form. 0/13048 useless extension candidates. Maximal degree in co-relation 33220. Up to 9737 conditions per place. [2024-10-24 23:37:20,365 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 124 selfloop transitions, 10 changer transitions 0/151 dead transitions. [2024-10-24 23:37:20,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 151 transitions, 1002 flow [2024-10-24 23:37:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-10-24 23:37:20,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6258064516129033 [2024-10-24 23:37:20,367 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 466 flow. Second operand 5 states and 194 transitions. [2024-10-24 23:37:20,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 151 transitions, 1002 flow [2024-10-24 23:37:20,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 151 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:20,374 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 558 flow [2024-10-24 23:37:20,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-10-24 23:37:20,376 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-10-24 23:37:20,376 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 558 flow [2024-10-24 23:37:20,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:20,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:20,377 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:20,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:37:20,377 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:20,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1804449395, now seen corresponding path program 1 times [2024-10-24 23:37:20,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:20,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233807552] [2024-10-24 23:37:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:20,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:20,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:20,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233807552] [2024-10-24 23:37:20,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233807552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:20,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:20,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:37:20,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133871793] [2024-10-24 23:37:20,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:20,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:20,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:20,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:20,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:20,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:37:20,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:20,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:20,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:37:20,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:21,627 INFO L124 PetriNetUnfolderBase]: 11462/18144 cut-off events. [2024-10-24 23:37:21,628 INFO L125 PetriNetUnfolderBase]: For 6345/6757 co-relation queries the response was YES. [2024-10-24 23:37:21,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 18144 events. 11462/18144 cut-off events. For 6345/6757 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 125296 event pairs, 4982 based on Foata normal form. 0/16680 useless extension candidates. Maximal degree in co-relation 41174. Up to 6489 conditions per place. [2024-10-24 23:37:21,713 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 139 selfloop transitions, 14 changer transitions 0/170 dead transitions. [2024-10-24 23:37:21,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 170 transitions, 1137 flow [2024-10-24 23:37:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:37:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:37:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-10-24 23:37:21,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6317204301075269 [2024-10-24 23:37:21,714 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 558 flow. Second operand 6 states and 235 transitions. [2024-10-24 23:37:21,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 170 transitions, 1137 flow [2024-10-24 23:37:21,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1133 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:21,725 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 637 flow [2024-10-24 23:37:21,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-10-24 23:37:21,726 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-10-24 23:37:21,726 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 637 flow [2024-10-24 23:37:21,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:21,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:21,727 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:37:21,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:37:21,727 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:21,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:21,727 INFO L85 PathProgramCache]: Analyzing trace with hash 844002644, now seen corresponding path program 2 times [2024-10-24 23:37:21,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:21,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479461325] [2024-10-24 23:37:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:21,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:21,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479461325] [2024-10-24 23:37:21,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479461325] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185995166] [2024-10-24 23:37:21,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:37:21,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:21,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:21,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:21,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:37:21,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:37:21,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:37:21,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:37:21,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:37:21,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:37:22,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185995166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:22,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:22,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:37:22,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545806883] [2024-10-24 23:37:22,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:22,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:37:22,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:22,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:37:22,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:37:22,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-24 23:37:22,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 637 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:22,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:22,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-24 23:37:22,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:23,436 INFO L124 PetriNetUnfolderBase]: 11469/18852 cut-off events. [2024-10-24 23:37:23,437 INFO L125 PetriNetUnfolderBase]: For 7689/7729 co-relation queries the response was YES. [2024-10-24 23:37:23,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43454 conditions, 18852 events. 11469/18852 cut-off events. For 7689/7729 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 138441 event pairs, 8454 based on Foata normal form. 8/17969 useless extension candidates. Maximal degree in co-relation 43134. Up to 15729 conditions per place. [2024-10-24 23:37:23,522 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 40 selfloop transitions, 61 changer transitions 0/115 dead transitions. [2024-10-24 23:37:23,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 902 flow [2024-10-24 23:37:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:37:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:37:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 519 transitions. [2024-10-24 23:37:23,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3487903225806452 [2024-10-24 23:37:23,525 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 637 flow. Second operand 24 states and 519 transitions. [2024-10-24 23:37:23,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 902 flow [2024-10-24 23:37:23,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 888 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-24 23:37:23,552 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 833 flow [2024-10-24 23:37:23,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=833, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-10-24 23:37:23,553 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2024-10-24 23:37:23,554 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 833 flow [2024-10-24 23:37:23,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:23,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:23,554 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:23,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:37:23,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:23,757 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:23,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash 610272312, now seen corresponding path program 1 times [2024-10-24 23:37:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732405251] [2024-10-24 23:37:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732405251] [2024-10-24 23:37:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732405251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:23,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:23,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718586181] [2024-10-24 23:37:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:23,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:23,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:23,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:37:23,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 833 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:23,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:23,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:37:23,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:24,738 INFO L124 PetriNetUnfolderBase]: 9752/15640 cut-off events. [2024-10-24 23:37:24,738 INFO L125 PetriNetUnfolderBase]: For 6269/6469 co-relation queries the response was YES. [2024-10-24 23:37:24,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36428 conditions, 15640 events. 9752/15640 cut-off events. For 6269/6469 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 108079 event pairs, 7166 based on Foata normal form. 0/14999 useless extension candidates. Maximal degree in co-relation 36187. Up to 12337 conditions per place. [2024-10-24 23:37:24,809 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 130 selfloop transitions, 12 changer transitions 5/163 dead transitions. [2024-10-24 23:37:24,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 1428 flow [2024-10-24 23:37:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:24,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-10-24 23:37:24,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-10-24 23:37:24,814 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 833 flow. Second operand 5 states and 190 transitions. [2024-10-24 23:37:24,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 1428 flow [2024-10-24 23:37:24,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 163 transitions, 1225 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-10-24 23:37:24,826 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 695 flow [2024-10-24 23:37:24,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=695, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2024-10-24 23:37:24,827 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2024-10-24 23:37:24,827 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 695 flow [2024-10-24 23:37:24,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:24,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:24,828 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:24,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:37:24,828 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:24,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1384429299, now seen corresponding path program 1 times [2024-10-24 23:37:24,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:24,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974383830] [2024-10-24 23:37:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:24,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 23:37:24,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:24,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974383830] [2024-10-24 23:37:24,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974383830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:24,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:24,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:37:24,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460154550] [2024-10-24 23:37:24,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:24,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:24,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:24,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:24,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:24,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:37:24,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 695 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:24,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:24,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:37:24,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:25,790 INFO L124 PetriNetUnfolderBase]: 8401/12979 cut-off events. [2024-10-24 23:37:25,790 INFO L125 PetriNetUnfolderBase]: For 5611/6166 co-relation queries the response was YES. [2024-10-24 23:37:25,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31061 conditions, 12979 events. 8401/12979 cut-off events. For 5611/6166 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 82405 event pairs, 3460 based on Foata normal form. 67/12995 useless extension candidates. Maximal degree in co-relation 30838. Up to 5531 conditions per place. [2024-10-24 23:37:25,854 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 144 selfloop transitions, 14 changer transitions 3/177 dead transitions. [2024-10-24 23:37:25,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1273 flow [2024-10-24 23:37:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:37:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:37:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-10-24 23:37:25,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6263440860215054 [2024-10-24 23:37:25,856 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 695 flow. Second operand 6 states and 233 transitions. [2024-10-24 23:37:25,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1273 flow [2024-10-24 23:37:25,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1249 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:37:25,868 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 704 flow [2024-10-24 23:37:25,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=704, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-10-24 23:37:25,868 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-10-24 23:37:25,868 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 704 flow [2024-10-24 23:37:25,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:25,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:25,869 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:25,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 23:37:25,869 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:25,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1148795679, now seen corresponding path program 1 times [2024-10-24 23:37:25,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:25,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016786718] [2024-10-24 23:37:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:25,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:37:25,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:25,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016786718] [2024-10-24 23:37:25,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016786718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:25,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:25,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:37:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850919650] [2024-10-24 23:37:25,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:25,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:25,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:25,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:25,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:37:25,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 704 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:25,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:25,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:37:25,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:26,993 INFO L124 PetriNetUnfolderBase]: 10798/17310 cut-off events. [2024-10-24 23:37:26,993 INFO L125 PetriNetUnfolderBase]: For 8586/8923 co-relation queries the response was YES. [2024-10-24 23:37:27,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41470 conditions, 17310 events. 10798/17310 cut-off events. For 8586/8923 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 120328 event pairs, 5144 based on Foata normal form. 262/17517 useless extension candidates. Maximal degree in co-relation 41247. Up to 6048 conditions per place. [2024-10-24 23:37:27,112 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 129 selfloop transitions, 19 changer transitions 1/165 dead transitions. [2024-10-24 23:37:27,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 165 transitions, 1172 flow [2024-10-24 23:37:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-10-24 23:37:27,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-10-24 23:37:27,116 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 704 flow. Second operand 5 states and 205 transitions. [2024-10-24 23:37:27,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 165 transitions, 1172 flow [2024-10-24 23:37:27,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1143 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:37:27,136 INFO L231 Difference]: Finished difference. Result has 108 places, 113 transitions, 709 flow [2024-10-24 23:37:27,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=709, PETRI_PLACES=108, PETRI_TRANSITIONS=113} [2024-10-24 23:37:27,137 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2024-10-24 23:37:27,137 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 113 transitions, 709 flow [2024-10-24 23:37:27,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:27,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:27,138 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:37:27,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 23:37:27,138 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:27,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1617871485, now seen corresponding path program 1 times [2024-10-24 23:37:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:27,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950130092] [2024-10-24 23:37:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:27,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950130092] [2024-10-24 23:37:27,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950130092] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096780707] [2024-10-24 23:37:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:27,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:27,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:27,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:37:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:27,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:37:27,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:27,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:27,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096780707] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:27,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:27,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:37:27,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516843454] [2024-10-24 23:37:27,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:27,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:37:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:27,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:37:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:37:27,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-24 23:37:27,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 113 transitions, 709 flow. Second operand has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:27,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:27,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-24 23:37:27,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:29,265 INFO L124 PetriNetUnfolderBase]: 10723/17788 cut-off events. [2024-10-24 23:37:29,266 INFO L125 PetriNetUnfolderBase]: For 10565/10597 co-relation queries the response was YES. [2024-10-24 23:37:29,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43070 conditions, 17788 events. 10723/17788 cut-off events. For 10565/10597 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130493 event pairs, 7960 based on Foata normal form. 42/17671 useless extension candidates. Maximal degree in co-relation 42138. Up to 14797 conditions per place. [2024-10-24 23:37:29,382 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 43 selfloop transitions, 126 changer transitions 0/183 dead transitions. [2024-10-24 23:37:29,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 183 transitions, 1621 flow [2024-10-24 23:37:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:37:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:37:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 628 transitions. [2024-10-24 23:37:29,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38957816377171217 [2024-10-24 23:37:29,385 INFO L175 Difference]: Start difference. First operand has 108 places, 113 transitions, 709 flow. Second operand 26 states and 628 transitions. [2024-10-24 23:37:29,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 183 transitions, 1621 flow [2024-10-24 23:37:29,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:37:29,417 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 1586 flow [2024-10-24 23:37:29,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1586, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2024-10-24 23:37:29,418 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 80 predicate places. [2024-10-24 23:37:29,418 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 1586 flow [2024-10-24 23:37:29,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:29,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:29,419 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:29,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:37:29,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:29,619 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:29,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash -873364429, now seen corresponding path program 1 times [2024-10-24 23:37:29,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:29,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277199470] [2024-10-24 23:37:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:29,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:29,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277199470] [2024-10-24 23:37:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277199470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329012658] [2024-10-24 23:37:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:29,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:29,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:29,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:29,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:37:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:29,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:37:29,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:29,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329012658] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:30,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:30,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-24 23:37:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126561629] [2024-10-24 23:37:30,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:30,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 23:37:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 23:37:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-10-24 23:37:30,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-24 23:37:30,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 1586 flow. Second operand has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:30,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:30,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-24 23:37:30,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:35,427 INFO L124 PetriNetUnfolderBase]: 33758/52405 cut-off events. [2024-10-24 23:37:35,428 INFO L125 PetriNetUnfolderBase]: For 31274/32940 co-relation queries the response was YES. [2024-10-24 23:37:35,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128344 conditions, 52405 events. 33758/52405 cut-off events. For 31274/32940 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 413082 event pairs, 13312 based on Foata normal form. 870/52940 useless extension candidates. Maximal degree in co-relation 127706. Up to 7493 conditions per place. [2024-10-24 23:37:35,801 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 591 selfloop transitions, 268 changer transitions 40/912 dead transitions. [2024-10-24 23:37:35,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 912 transitions, 8602 flow [2024-10-24 23:37:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-24 23:37:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-10-24 23:37:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1182 transitions. [2024-10-24 23:37:35,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4056280027453672 [2024-10-24 23:37:35,804 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 1586 flow. Second operand 47 states and 1182 transitions. [2024-10-24 23:37:35,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 912 transitions, 8602 flow [2024-10-24 23:37:35,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 912 transitions, 6929 flow, removed 600 selfloop flow, removed 12 redundant places. [2024-10-24 23:37:35,881 INFO L231 Difference]: Finished difference. Result has 184 places, 430 transitions, 3944 flow [2024-10-24 23:37:35,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3944, PETRI_PLACES=184, PETRI_TRANSITIONS=430} [2024-10-24 23:37:35,882 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 126 predicate places. [2024-10-24 23:37:35,882 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 430 transitions, 3944 flow [2024-10-24 23:37:35,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.952380952380953) internal successors, (377), 21 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:35,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:35,883 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:35,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 23:37:36,083 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,SelfDestructingSolverStorable14 [2024-10-24 23:37:36,084 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:36,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash -553337275, now seen corresponding path program 1 times [2024-10-24 23:37:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:36,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520854575] [2024-10-24 23:37:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:36,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 23:37:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520854575] [2024-10-24 23:37:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520854575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:36,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:37:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379545519] [2024-10-24 23:37:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:36,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:36,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 62 [2024-10-24 23:37:36,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 430 transitions, 3944 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:36,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:36,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 62 [2024-10-24 23:37:36,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:40,494 INFO L124 PetriNetUnfolderBase]: 28077/44707 cut-off events. [2024-10-24 23:37:40,494 INFO L125 PetriNetUnfolderBase]: For 47741/48743 co-relation queries the response was YES. [2024-10-24 23:37:40,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115286 conditions, 44707 events. 28077/44707 cut-off events. For 47741/48743 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 354169 event pairs, 12342 based on Foata normal form. 236/44865 useless extension candidates. Maximal degree in co-relation 114697. Up to 19610 conditions per place. [2024-10-24 23:37:40,837 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 414 selfloop transitions, 40 changer transitions 15/485 dead transitions. [2024-10-24 23:37:40,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 485 transitions, 5132 flow [2024-10-24 23:37:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-10-24 23:37:40,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419354838709678 [2024-10-24 23:37:40,839 INFO L175 Difference]: Start difference. First operand has 184 places, 430 transitions, 3944 flow. Second operand 5 states and 199 transitions. [2024-10-24 23:37:40,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 485 transitions, 5132 flow [2024-10-24 23:37:40,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 485 transitions, 5055 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-10-24 23:37:40,945 INFO L231 Difference]: Finished difference. Result has 183 places, 426 transitions, 3900 flow [2024-10-24 23:37:40,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3900, PETRI_PLACES=183, PETRI_TRANSITIONS=426} [2024-10-24 23:37:40,946 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 125 predicate places. [2024-10-24 23:37:40,946 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 426 transitions, 3900 flow [2024-10-24 23:37:40,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:40,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:40,946 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:40,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 23:37:40,946 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:40,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:40,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1636799628, now seen corresponding path program 1 times [2024-10-24 23:37:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:40,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632880916] [2024-10-24 23:37:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:40,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:41,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632880916] [2024-10-24 23:37:41,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632880916] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041018749] [2024-10-24 23:37:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:41,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:41,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:41,017 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:41,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:37:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:41,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:37:41,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:41,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:41,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041018749] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:41,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:41,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-10-24 23:37:41,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450543455] [2024-10-24 23:37:41,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:41,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 23:37:41,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 23:37:41,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-10-24 23:37:41,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-24 23:37:41,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 426 transitions, 3900 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:41,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:41,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-24 23:37:41,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:45,110 INFO L124 PetriNetUnfolderBase]: 25309/38811 cut-off events. [2024-10-24 23:37:45,110 INFO L125 PetriNetUnfolderBase]: For 48412/49310 co-relation queries the response was YES. [2024-10-24 23:37:45,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103420 conditions, 38811 events. 25309/38811 cut-off events. For 48412/49310 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 287694 event pairs, 8714 based on Foata normal form. 882/39186 useless extension candidates. Maximal degree in co-relation 102816. Up to 8526 conditions per place. [2024-10-24 23:37:45,379 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 392 selfloop transitions, 194 changer transitions 12/610 dead transitions. [2024-10-24 23:37:45,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 610 transitions, 5926 flow [2024-10-24 23:37:45,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 23:37:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 23:37:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 466 transitions. [2024-10-24 23:37:45,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44212523719165087 [2024-10-24 23:37:45,380 INFO L175 Difference]: Start difference. First operand has 183 places, 426 transitions, 3900 flow. Second operand 17 states and 466 transitions. [2024-10-24 23:37:45,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 610 transitions, 5926 flow [2024-10-24 23:37:45,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 610 transitions, 5833 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:37:45,474 INFO L231 Difference]: Finished difference. Result has 196 places, 427 transitions, 4218 flow [2024-10-24 23:37:45,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4218, PETRI_PLACES=196, PETRI_TRANSITIONS=427} [2024-10-24 23:37:45,475 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 138 predicate places. [2024-10-24 23:37:45,475 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 427 transitions, 4218 flow [2024-10-24 23:37:45,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:45,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:45,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:45,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 23:37:45,675 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,SelfDestructingSolverStorable16 [2024-10-24 23:37:45,676 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:45,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash -168509946, now seen corresponding path program 1 times [2024-10-24 23:37:45,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:45,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153332187] [2024-10-24 23:37:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:37:45,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:45,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153332187] [2024-10-24 23:37:45,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153332187] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:45,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449034384] [2024-10-24 23:37:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:45,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:45,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:45,779 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:45,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:37:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:46,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:37:46,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:46,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:37:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449034384] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:46,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:46,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-10-24 23:37:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549299682] [2024-10-24 23:37:46,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:46,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 23:37:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:46,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 23:37:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-10-24 23:37:46,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-24 23:37:46,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 427 transitions, 4218 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:46,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:46,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-24 23:37:46,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:50,048 INFO L124 PetriNetUnfolderBase]: 22650/34631 cut-off events. [2024-10-24 23:37:50,048 INFO L125 PetriNetUnfolderBase]: For 53814/54182 co-relation queries the response was YES. [2024-10-24 23:37:50,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95673 conditions, 34631 events. 22650/34631 cut-off events. For 53814/54182 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 249922 event pairs, 8754 based on Foata normal form. 748/34948 useless extension candidates. Maximal degree in co-relation 95042. Up to 7803 conditions per place. [2024-10-24 23:37:50,277 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 450 selfloop transitions, 163 changer transitions 32/656 dead transitions. [2024-10-24 23:37:50,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 656 transitions, 6910 flow [2024-10-24 23:37:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 23:37:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 23:37:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 473 transitions. [2024-10-24 23:37:50,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4487666034155598 [2024-10-24 23:37:50,279 INFO L175 Difference]: Start difference. First operand has 196 places, 427 transitions, 4218 flow. Second operand 17 states and 473 transitions. [2024-10-24 23:37:50,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 656 transitions, 6910 flow [2024-10-24 23:37:50,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 656 transitions, 6749 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-10-24 23:37:50,379 INFO L231 Difference]: Finished difference. Result has 203 places, 426 transitions, 4460 flow [2024-10-24 23:37:50,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4460, PETRI_PLACES=203, PETRI_TRANSITIONS=426} [2024-10-24 23:37:50,380 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 145 predicate places. [2024-10-24 23:37:50,380 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 426 transitions, 4460 flow [2024-10-24 23:37:50,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:50,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:50,380 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:50,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:50,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:50,581 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-24 23:37:50,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:50,582 INFO L85 PathProgramCache]: Analyzing trace with hash -260381577, now seen corresponding path program 1 times [2024-10-24 23:37:50,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:50,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404872080] [2024-10-24 23:37:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:50,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 23:37:50,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:50,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404872080] [2024-10-24 23:37:50,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404872080] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:50,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94794697] [2024-10-24 23:37:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:50,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:50,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:50,654 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:50,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:37:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:50,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:37:50,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:37:50,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 23:37:50,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94794697] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:50,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:50,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-10-24 23:37:50,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228572975] [2024-10-24 23:37:50,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:50,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 23:37:50,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 23:37:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-10-24 23:37:50,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-24 23:37:50,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 426 transitions, 4460 flow. Second operand has 19 states, 19 states have (on average 18.36842105263158) internal successors, (349), 19 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:50,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:50,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-24 23:37:50,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand