./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/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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/popl20-more-mts.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 cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:04:13,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:04:13,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:04:13,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:04:13,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:04:13,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:04:13,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:04:13,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:04:13,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:04:13,777 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:04:13,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:04:13,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:04:13,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:04:13,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:04:13,781 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:04:13,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:04:13,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:04:13,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:04:13,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:04:13,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:04:13,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:04:13,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:04:13,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:04:13,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:04:13,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:04:13,785 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:04:13,785 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:04:13,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:04:13,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:04:13,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:04:13,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:04:13,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:04:13,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:04:13,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:04:13,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:04:13,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:04:13,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:04:13,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:04:13,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:04:13,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:04:13,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:04:13,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:04:13,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:04:13,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:04:13,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2024-10-15 00:04:14,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:04:14,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:04:14,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:04:14,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:04:14,135 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:04:14,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-15 00:04:15,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:04:15,788 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:04:15,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2024-10-15 00:04:15,796 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172cc91fe/7c45571602414f0ea6ec8e769d0173b7/FLAG8ed475bf3 [2024-10-15 00:04:15,808 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172cc91fe/7c45571602414f0ea6ec8e769d0173b7 [2024-10-15 00:04:15,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:04:15,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:04:15,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:04:15,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:04:15,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:04:15,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:15" (1/1) ... [2024-10-15 00:04:15,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aeb663b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:15, skipping insertion in model container [2024-10-15 00:04:15,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:15" (1/1) ... [2024-10-15 00:04:15,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:04:16,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:04:16,048 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:04:16,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:04:16,103 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:04:16,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16 WrapperNode [2024-10-15 00:04:16,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:04:16,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:04:16,105 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:04:16,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:04:16,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,158 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 20, statements flattened = 296 [2024-10-15 00:04:16,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:04:16,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:04:16,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:04:16,160 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:04:16,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,186 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,200 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-15 00:04:16,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:04:16,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:04:16,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:04:16,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:04:16,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (1/1) ... [2024-10-15 00:04:16,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:04:16,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:16,280 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) [2024-10-15 00:04:16,282 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 [2024-10-15 00:04:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:04:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:04:16,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:04:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:04:16,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:04:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:04:16,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:04:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:04:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:04:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:04:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:04:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:04:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:04:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:04:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:04:16,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:04:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:04:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:04:16,328 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:04:16,442 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:04:16,445 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:04:17,019 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:04:17,020 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:04:17,489 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:04:17,491 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-15 00:04:17,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:17 BoogieIcfgContainer [2024-10-15 00:04:17,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:04:17,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:04:17,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:04:17,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:04:17,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:15" (1/3) ... [2024-10-15 00:04:17,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e5ad69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:17, skipping insertion in model container [2024-10-15 00:04:17,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:16" (2/3) ... [2024-10-15 00:04:17,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e5ad69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:17, skipping insertion in model container [2024-10-15 00:04:17,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:17" (3/3) ... [2024-10-15 00:04:17,501 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2024-10-15 00:04:17,520 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:04:17,521 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-10-15 00:04:17,521 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:04:17,669 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:04:17,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 117 transitions, 255 flow [2024-10-15 00:04:17,774 INFO L124 PetriNetUnfolderBase]: 11/114 cut-off events. [2024-10-15 00:04:17,775 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:04:17,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 11/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 451 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2024-10-15 00:04:17,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 117 transitions, 255 flow [2024-10-15 00:04:17,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 111 transitions, 240 flow [2024-10-15 00:04:17,803 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:04:17,812 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;@4a8fa0e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:04:17,812 INFO L334 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2024-10-15 00:04:17,816 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:04:17,816 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:04:17,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:04:17,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:17,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:04:17,818 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:17,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash 952881, now seen corresponding path program 1 times [2024-10-15 00:04:17,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:17,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949294808] [2024-10-15 00:04:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:18,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:18,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949294808] [2024-10-15 00:04:18,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949294808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:18,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:18,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:04:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250043006] [2024-10-15 00:04:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:18,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:18,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:18,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:18,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 117 [2024-10-15 00:04:18,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:18,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:18,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 117 [2024-10-15 00:04:18,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:20,858 INFO L124 PetriNetUnfolderBase]: 9585/16787 cut-off events. [2024-10-15 00:04:20,858 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2024-10-15 00:04:20,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30072 conditions, 16787 events. 9585/16787 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 140542 event pairs, 7130 based on Foata normal form. 1/12508 useless extension candidates. Maximal degree in co-relation 29022. Up to 12874 conditions per place. [2024-10-15 00:04:21,014 INFO L140 encePairwiseOnDemand]: 103/117 looper letters, 50 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2024-10-15 00:04:21,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 338 flow [2024-10-15 00:04:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2024-10-15 00:04:21,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2024-10-15 00:04:21,027 INFO L175 Difference]: Start difference. First operand has 111 places, 111 transitions, 240 flow. Second operand 4 states and 284 transitions. [2024-10-15 00:04:21,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 338 flow [2024-10-15 00:04:21,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 106 transitions, 326 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-15 00:04:21,038 INFO L231 Difference]: Finished difference. Result has 102 places, 106 transitions, 241 flow [2024-10-15 00:04:21,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=102, PETRI_TRANSITIONS=106} [2024-10-15 00:04:21,044 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -9 predicate places. [2024-10-15 00:04:21,044 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 106 transitions, 241 flow [2024-10-15 00:04:21,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:21,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:21,045 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:04:21,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:04:21,045 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:21,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1676461518, now seen corresponding path program 1 times [2024-10-15 00:04:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:21,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359940415] [2024-10-15 00:04:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:21,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:21,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359940415] [2024-10-15 00:04:21,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359940415] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148318427] [2024-10-15 00:04:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:21,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:21,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:21,223 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) [2024-10-15 00:04:21,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:04:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:21,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:21,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:21,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:04:21,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148318427] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:21,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:04:21,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:04:21,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845875303] [2024-10-15 00:04:21,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:21,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:04:21,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:04:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:04:21,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 117 [2024-10-15 00:04:21,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:21,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:21,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 117 [2024-10-15 00:04:21,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:23,513 INFO L124 PetriNetUnfolderBase]: 9585/16786 cut-off events. [2024-10-15 00:04:23,513 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-10-15 00:04:23,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29813 conditions, 16786 events. 9585/16786 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 140250 event pairs, 7130 based on Foata normal form. 1/12508 useless extension candidates. Maximal degree in co-relation 29786. Up to 12869 conditions per place. [2024-10-15 00:04:23,615 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 46 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2024-10-15 00:04:23,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 343 flow [2024-10-15 00:04:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:04:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:04:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2024-10-15 00:04:23,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-10-15 00:04:23,619 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 241 flow. Second operand 6 states and 384 transitions. [2024-10-15 00:04:23,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 343 flow [2024-10-15 00:04:23,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:23,626 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 248 flow [2024-10-15 00:04:23,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-10-15 00:04:23,627 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, -6 predicate places. [2024-10-15 00:04:23,628 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 248 flow [2024-10-15 00:04:23,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:23,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:23,628 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:04:23,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:04:23,832 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 [2024-10-15 00:04:23,833 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:23,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:23,834 INFO L85 PathProgramCache]: Analyzing trace with hash -430698467, now seen corresponding path program 1 times [2024-10-15 00:04:23,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:23,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733094162] [2024-10-15 00:04:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:23,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:23,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:23,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733094162] [2024-10-15 00:04:23,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733094162] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:23,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076746625] [2024-10-15 00:04:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:23,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:23,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:23,954 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) [2024-10-15 00:04:23,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:04:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:24,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:24,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:24,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076746625] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:24,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:24,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:04:24,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323412217] [2024-10-15 00:04:24,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:24,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:04:24,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:24,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:04:24,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:04:24,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 117 [2024-10-15 00:04:24,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 248 flow. Second operand has 12 states, 12 states have (on average 56.083333333333336) internal successors, (673), 12 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:24,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:24,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 117 [2024-10-15 00:04:24,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:26,314 INFO L124 PetriNetUnfolderBase]: 9588/16798 cut-off events. [2024-10-15 00:04:26,314 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-10-15 00:04:26,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29857 conditions, 16798 events. 9588/16798 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 140331 event pairs, 7130 based on Foata normal form. 3/12520 useless extension candidates. Maximal degree in co-relation 29787. Up to 12876 conditions per place. [2024-10-15 00:04:26,477 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 49 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2024-10-15 00:04:26,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 114 transitions, 426 flow [2024-10-15 00:04:26,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 615 transitions. [2024-10-15 00:04:26,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2024-10-15 00:04:26,480 INFO L175 Difference]: Start difference. First operand has 105 places, 105 transitions, 248 flow. Second operand 10 states and 615 transitions. [2024-10-15 00:04:26,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 114 transitions, 426 flow [2024-10-15 00:04:26,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 114 transitions, 380 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-15 00:04:26,484 INFO L231 Difference]: Finished difference. Result has 112 places, 114 transitions, 300 flow [2024-10-15 00:04:26,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=300, PETRI_PLACES=112, PETRI_TRANSITIONS=114} [2024-10-15 00:04:26,485 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 1 predicate places. [2024-10-15 00:04:26,486 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 114 transitions, 300 flow [2024-10-15 00:04:26,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 56.083333333333336) internal successors, (673), 12 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:26,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:26,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:26,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:26,687 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 [2024-10-15 00:04:26,688 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:26,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:26,689 INFO L85 PathProgramCache]: Analyzing trace with hash -238172667, now seen corresponding path program 1 times [2024-10-15 00:04:26,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:26,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266473208] [2024-10-15 00:04:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:26,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:26,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266473208] [2024-10-15 00:04:26,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266473208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:26,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:26,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:26,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485451050] [2024-10-15 00:04:26,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:26,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:26,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:26,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:26,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 117 [2024-10-15 00:04:26,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 114 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:26,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:26,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 117 [2024-10-15 00:04:26,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:28,916 INFO L124 PetriNetUnfolderBase]: 14876/25554 cut-off events. [2024-10-15 00:04:28,916 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-10-15 00:04:28,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45863 conditions, 25554 events. 14876/25554 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 223866 event pairs, 6540 based on Foata normal form. 532/19232 useless extension candidates. Maximal degree in co-relation 45829. Up to 11925 conditions per place. [2024-10-15 00:04:29,110 INFO L140 encePairwiseOnDemand]: 109/117 looper letters, 121 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2024-10-15 00:04:29,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 173 transitions, 674 flow [2024-10-15 00:04:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2024-10-15 00:04:29,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6858974358974359 [2024-10-15 00:04:29,112 INFO L175 Difference]: Start difference. First operand has 112 places, 114 transitions, 300 flow. Second operand 4 states and 321 transitions. [2024-10-15 00:04:29,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 173 transitions, 674 flow [2024-10-15 00:04:29,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 173 transitions, 663 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:04:29,118 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 323 flow [2024-10-15 00:04:29,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2024-10-15 00:04:29,120 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 4 predicate places. [2024-10-15 00:04:29,121 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 323 flow [2024-10-15 00:04:29,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:29,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:29,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:29,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:04:29,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:29,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:29,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1206582979, now seen corresponding path program 1 times [2024-10-15 00:04:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952299980] [2024-10-15 00:04:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:29,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:29,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:29,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952299980] [2024-10-15 00:04:29,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952299980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:29,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:29,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:04:29,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620197531] [2024-10-15 00:04:29,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:29,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:04:29,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:04:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:04:29,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 117 [2024-10-15 00:04:29,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:29,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:29,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 117 [2024-10-15 00:04:29,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:30,982 INFO L124 PetriNetUnfolderBase]: 11023/20273 cut-off events. [2024-10-15 00:04:30,983 INFO L125 PetriNetUnfolderBase]: For 3287/3803 co-relation queries the response was YES. [2024-10-15 00:04:31,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37877 conditions, 20273 events. 11023/20273 cut-off events. For 3287/3803 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 184854 event pairs, 8336 based on Foata normal form. 260/15635 useless extension candidates. Maximal degree in co-relation 37848. Up to 14848 conditions per place. [2024-10-15 00:04:31,224 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 60 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-10-15 00:04:31,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 444 flow [2024-10-15 00:04:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:04:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:04:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2024-10-15 00:04:31,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6353276353276354 [2024-10-15 00:04:31,227 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 323 flow. Second operand 3 states and 223 transitions. [2024-10-15 00:04:31,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 444 flow [2024-10-15 00:04:31,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:04:31,280 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 324 flow [2024-10-15 00:04:31,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2024-10-15 00:04:31,281 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 6 predicate places. [2024-10-15 00:04:31,281 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 324 flow [2024-10-15 00:04:31,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:31,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:31,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:31,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:04:31,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:31,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash -452384926, now seen corresponding path program 1 times [2024-10-15 00:04:31,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:31,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591406201] [2024-10-15 00:04:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:31,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591406201] [2024-10-15 00:04:31,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591406201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143678628] [2024-10-15 00:04:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:31,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:31,612 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) [2024-10-15 00:04:31,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:04:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:31,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 00:04:31,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:31,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:04:31,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-15 00:04:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:31,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:31,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:04:31,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:04:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:31,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143678628] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:31,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:31,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:04:31,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786949102] [2024-10-15 00:04:31,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:31,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:04:31,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:04:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:04:32,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 117 [2024-10-15 00:04:32,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 324 flow. Second operand has 13 states, 13 states have (on average 55.38461538461539) internal successors, (720), 13 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:32,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:32,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 117 [2024-10-15 00:04:32,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:36,234 INFO L124 PetriNetUnfolderBase]: 23157/44515 cut-off events. [2024-10-15 00:04:36,234 INFO L125 PetriNetUnfolderBase]: For 6779/6787 co-relation queries the response was YES. [2024-10-15 00:04:36,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83882 conditions, 44515 events. 23157/44515 cut-off events. For 6779/6787 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 445797 event pairs, 6606 based on Foata normal form. 8/34390 useless extension candidates. Maximal degree in co-relation 83859. Up to 12250 conditions per place. [2024-10-15 00:04:36,636 INFO L140 encePairwiseOnDemand]: 104/117 looper letters, 176 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2024-10-15 00:04:36,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 245 transitions, 1002 flow [2024-10-15 00:04:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 724 transitions. [2024-10-15 00:04:36,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6188034188034188 [2024-10-15 00:04:36,640 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 324 flow. Second operand 10 states and 724 transitions. [2024-10-15 00:04:36,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 245 transitions, 1002 flow [2024-10-15 00:04:36,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 245 transitions, 998 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:04:36,793 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 427 flow [2024-10-15 00:04:36,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-10-15 00:04:36,794 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 16 predicate places. [2024-10-15 00:04:36,794 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 427 flow [2024-10-15 00:04:36,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 55.38461538461539) internal successors, (720), 13 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:36,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:36,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:36,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:36,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:36,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:36,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1139061526, now seen corresponding path program 1 times [2024-10-15 00:04:36,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:36,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824082960] [2024-10-15 00:04:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:36,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:37,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:37,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824082960] [2024-10-15 00:04:37,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824082960] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:37,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71594181] [2024-10-15 00:04:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:37,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:37,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:37,258 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) [2024-10-15 00:04:37,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:04:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:37,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:04:37,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:37,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:04:37,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-15 00:04:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:37,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:37,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-15 00:04:37,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:04:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:37,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71594181] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:37,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:37,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:04:37,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395150063] [2024-10-15 00:04:37,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:37,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:04:37,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:04:37,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:04:37,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 117 [2024-10-15 00:04:37,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 427 flow. Second operand has 13 states, 13 states have (on average 53.53846153846154) internal successors, (696), 13 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:37,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:37,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 117 [2024-10-15 00:04:37,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:42,072 INFO L124 PetriNetUnfolderBase]: 27779/49299 cut-off events. [2024-10-15 00:04:42,072 INFO L125 PetriNetUnfolderBase]: For 21570/21726 co-relation queries the response was YES. [2024-10-15 00:04:42,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101951 conditions, 49299 events. 27779/49299 cut-off events. For 21570/21726 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 458353 event pairs, 7724 based on Foata normal form. 422/38454 useless extension candidates. Maximal degree in co-relation 101915. Up to 15200 conditions per place. [2024-10-15 00:04:42,661 INFO L140 encePairwiseOnDemand]: 104/117 looper letters, 180 selfloop transitions, 18 changer transitions 0/246 dead transitions. [2024-10-15 00:04:42,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 246 transitions, 1083 flow [2024-10-15 00:04:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 704 transitions. [2024-10-15 00:04:42,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6017094017094017 [2024-10-15 00:04:42,664 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 427 flow. Second operand 10 states and 704 transitions. [2024-10-15 00:04:42,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 246 transitions, 1083 flow [2024-10-15 00:04:42,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 246 transitions, 1071 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-15 00:04:42,722 INFO L231 Difference]: Finished difference. Result has 134 places, 126 transitions, 477 flow [2024-10-15 00:04:42,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=134, PETRI_TRANSITIONS=126} [2024-10-15 00:04:42,723 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 23 predicate places. [2024-10-15 00:04:42,724 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 126 transitions, 477 flow [2024-10-15 00:04:42,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.53846153846154) internal successors, (696), 13 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:42,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:42,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:42,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 00:04:42,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:42,926 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:42,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:42,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1463983486, now seen corresponding path program 1 times [2024-10-15 00:04:42,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:42,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77926228] [2024-10-15 00:04:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:42,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:42,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:42,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77926228] [2024-10-15 00:04:42,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77926228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:42,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:42,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:42,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672093220] [2024-10-15 00:04:42,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:42,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:42,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:43,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 117 [2024-10-15 00:04:43,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 126 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:43,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:43,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 117 [2024-10-15 00:04:43,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:48,831 INFO L124 PetriNetUnfolderBase]: 33465/61139 cut-off events. [2024-10-15 00:04:48,831 INFO L125 PetriNetUnfolderBase]: For 47735/48656 co-relation queries the response was YES. [2024-10-15 00:04:49,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133223 conditions, 61139 events. 33465/61139 cut-off events. For 47735/48656 co-relation queries the response was YES. Maximal size of possible extension queue 1879. Compared 613241 event pairs, 14827 based on Foata normal form. 1909/48175 useless extension candidates. Maximal degree in co-relation 133185. Up to 26504 conditions per place. [2024-10-15 00:04:49,435 INFO L140 encePairwiseOnDemand]: 109/117 looper letters, 148 selfloop transitions, 5 changer transitions 0/203 dead transitions. [2024-10-15 00:04:49,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 203 transitions, 1135 flow [2024-10-15 00:04:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-10-15 00:04:49,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6816239316239316 [2024-10-15 00:04:49,437 INFO L175 Difference]: Start difference. First operand has 134 places, 126 transitions, 477 flow. Second operand 4 states and 319 transitions. [2024-10-15 00:04:49,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 203 transitions, 1135 flow [2024-10-15 00:04:49,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 203 transitions, 1087 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-15 00:04:49,653 INFO L231 Difference]: Finished difference. Result has 132 places, 128 transitions, 487 flow [2024-10-15 00:04:49,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=132, PETRI_TRANSITIONS=128} [2024-10-15 00:04:49,656 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 21 predicate places. [2024-10-15 00:04:49,656 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 128 transitions, 487 flow [2024-10-15 00:04:49,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:49,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:49,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:49,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-15 00:04:49,657 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:49,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash -951168892, now seen corresponding path program 1 times [2024-10-15 00:04:49,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:49,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852039862] [2024-10-15 00:04:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:49,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:49,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:49,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852039862] [2024-10-15 00:04:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852039862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:49,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:49,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:49,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092219954] [2024-10-15 00:04:49,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:49,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:04:49,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:04:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:04:49,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 117 [2024-10-15 00:04:49,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 128 transitions, 487 flow. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:49,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:49,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 117 [2024-10-15 00:04:49,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:55,860 INFO L124 PetriNetUnfolderBase]: 34633/61030 cut-off events. [2024-10-15 00:04:55,860 INFO L125 PetriNetUnfolderBase]: For 39469/41167 co-relation queries the response was YES. [2024-10-15 00:04:56,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138056 conditions, 61030 events. 34633/61030 cut-off events. For 39469/41167 co-relation queries the response was YES. Maximal size of possible extension queue 1973. Compared 584089 event pairs, 7726 based on Foata normal form. 1481/50623 useless extension candidates. Maximal degree in co-relation 138020. Up to 25526 conditions per place. [2024-10-15 00:04:56,500 INFO L140 encePairwiseOnDemand]: 108/117 looper letters, 205 selfloop transitions, 8 changer transitions 0/261 dead transitions. [2024-10-15 00:04:56,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 261 transitions, 1266 flow [2024-10-15 00:04:56,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:04:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:04:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2024-10-15 00:04:56,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7136752136752137 [2024-10-15 00:04:56,503 INFO L175 Difference]: Start difference. First operand has 132 places, 128 transitions, 487 flow. Second operand 6 states and 501 transitions. [2024-10-15 00:04:56,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 261 transitions, 1266 flow [2024-10-15 00:04:56,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 261 transitions, 1266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:04:56,912 INFO L231 Difference]: Finished difference. Result has 141 places, 130 transitions, 527 flow [2024-10-15 00:04:56,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=527, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2024-10-15 00:04:56,913 INFO L277 CegarLoopForPetriNet]: 111 programPoint places, 30 predicate places. [2024-10-15 00:04:56,913 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 527 flow [2024-10-15 00:04:56,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:56,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:56,914 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:56,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:04:56,914 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2024-10-15 00:04:56,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1861151094, now seen corresponding path program 1 times [2024-10-15 00:04:56,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:56,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167715219] [2024-10-15 00:04:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:56,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167715219] [2024-10-15 00:04:57,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167715219] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178128478] [2024-10-15 00:04:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:57,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:57,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:57,029 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) [2024-10-15 00:04:57,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:04:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:57,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:04:57,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:57,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:57,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178128478] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:57,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:57,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-10-15 00:04:57,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103921918] [2024-10-15 00:04:57,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:57,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 00:04:57,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 00:04:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-15 00:04:57,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 117 [2024-10-15 00:04:57,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 527 flow. Second operand has 16 states, 16 states have (on average 56.5) internal successors, (904), 16 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:57,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:57,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 117 [2024-10-15 00:04:57,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:03,937 INFO L124 PetriNetUnfolderBase]: 30053/59329 cut-off events. [2024-10-15 00:05:03,937 INFO L125 PetriNetUnfolderBase]: For 52259/53821 co-relation queries the response was YES. [2024-10-15 00:05:04,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137168 conditions, 59329 events. 30053/59329 cut-off events. For 52259/53821 co-relation queries the response was YES. Maximal size of possible extension queue 1939. Compared 635142 event pairs, 22382 based on Foata normal form. 1616/49602 useless extension candidates. Maximal degree in co-relation 137125. Up to 34499 conditions per place. [2024-10-15 00:05:04,601 INFO L140 encePairwiseOnDemand]: 110/117 looper letters, 144 selfloop transitions, 13 changer transitions 0/213 dead transitions. [2024-10-15 00:05:04,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 213 transitions, 1227 flow [2024-10-15 00:05:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:05:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:05:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 557 transitions. [2024-10-15 00:05:04,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5950854700854701 [2024-10-15 00:05:04,604 INFO L175 Difference]: Start difference. First operand has 141 places, 130 transitions, 527 flow. Second operand 8 states and 557 transitions. [2024-10-15 00:05:04,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 213 transitions, 1227 flow