./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-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 67ced8cbf918778cce3ae5cae291c50696df3950945fdf68713903c29ac269e1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:06:12,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:06:12,104 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:06:12,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:06:12,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:06:12,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:06:12,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:06:12,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:06:12,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:06:12,155 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:06:12,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:06:12,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:06:12,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:06:12,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:06:12,157 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:06:12,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:06:12,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:06:12,158 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:06:12,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:06:12,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:06:12,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:06:12,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:06:12,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:06:12,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:06:12,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:06:12,161 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:06:12,161 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:06:12,162 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:06:12,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:06:12,162 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:06:12,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:06:12,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:06:12,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:06:12,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:06:12,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:06:12,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:06:12,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:06:12,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:06:12,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:06:12,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:06:12,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:06:12,170 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:06:12,170 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:06:12,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:06:12,170 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ced8cbf918778cce3ae5cae291c50696df3950945fdf68713903c29ac269e1 [2024-10-12 00:06:12,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:06:12,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:06:12,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:06:12,419 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:06:12,419 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:06:12,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-10-12 00:06:13,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:06:14,229 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:06:14,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2024-10-12 00:06:14,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/74eb3d8c9/50818540c4564851b75cb87739713917/FLAG7ee34c49f [2024-10-12 00:06:14,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/74eb3d8c9/50818540c4564851b75cb87739713917 [2024-10-12 00:06:14,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:06:14,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:06:14,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:06:14,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:06:14,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:06:14,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c75ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14, skipping insertion in model container [2024-10-12 00:06:14,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,624 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:06:14,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:06:14,803 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:06:14,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:06:14,853 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:06:14,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14 WrapperNode [2024-10-12 00:06:14,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:06:14,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:06:14,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:06:14,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:06:14,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,887 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 125 [2024-10-12 00:06:14,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:06:14,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:06:14,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:06:14,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:06:14,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,920 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-12 00:06:14,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:06:14,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:06:14,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:06:14,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:06:14,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (1/1) ... [2024-10-12 00:06:14,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:06:14,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:14,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:06:14,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:06:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:06:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:06:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:06:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:06:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:06:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:06:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:06:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-12 00:06:15,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-12 00:06:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:06:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:06:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:06:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:06:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:06:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:06:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:06:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:06:15,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:06:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:06:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:06:15,043 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:06:15,188 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:06:15,191 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:06:15,497 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:06:15,499 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:06:15,691 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:06:15,691 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-12 00:06:15,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:06:15 BoogieIcfgContainer [2024-10-12 00:06:15,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:06:15,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:06:15,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:06:15,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:06:15,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:06:14" (1/3) ... [2024-10-12 00:06:15,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73db33ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:06:15, skipping insertion in model container [2024-10-12 00:06:15,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:14" (2/3) ... [2024-10-12 00:06:15,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73db33ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:06:15, skipping insertion in model container [2024-10-12 00:06:15,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:06:15" (3/3) ... [2024-10-12 00:06:15,701 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2024-10-12 00:06:15,721 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:06:15,721 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-12 00:06:15,721 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:06:15,793 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-12 00:06:15,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 64 transitions, 156 flow [2024-10-12 00:06:15,864 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-12 00:06:15,864 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-12 00:06:15,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 60 events. 4/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 172 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-10-12 00:06:15,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 64 transitions, 156 flow [2024-10-12 00:06:15,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 137 flow [2024-10-12 00:06:15,886 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:06:15,894 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;@2e5b924f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:06:15,894 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-12 00:06:15,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:06:15,897 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:06:15,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:06:15,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:15,898 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:06:15,899 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:15,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:15,904 INFO L85 PathProgramCache]: Analyzing trace with hash 536972, now seen corresponding path program 1 times [2024-10-12 00:06:15,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:15,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407602637] [2024-10-12 00:06:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:15,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:16,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:16,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407602637] [2024-10-12 00:06:16,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407602637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:16,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:16,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:06:16,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952773908] [2024-10-12 00:06:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:16,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:16,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-12 00:06:16,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-10-12 00:06:16,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:16,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-12 00:06:16,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:17,531 INFO L124 PetriNetUnfolderBase]: 4950/6791 cut-off events. [2024-10-12 00:06:17,531 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-10-12 00:06:17,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13618 conditions, 6791 events. 4950/6791 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39157 event pairs, 3598 based on Foata normal form. 1/6019 useless extension candidates. Maximal degree in co-relation 12550. Up to 6384 conditions per place. [2024-10-12 00:06:17,685 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 32 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-10-12 00:06:17,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 59 transitions, 211 flow [2024-10-12 00:06:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-10-12 00:06:17,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-10-12 00:06:17,715 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 137 flow. Second operand 4 states and 148 transitions. [2024-10-12 00:06:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 59 transitions, 211 flow [2024-10-12 00:06:17,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 198 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-12 00:06:17,745 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 149 flow [2024-10-12 00:06:17,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-10-12 00:06:17,757 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2024-10-12 00:06:17,757 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 149 flow [2024-10-12 00:06:17,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-10-12 00:06:17,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:17,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:06:17,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:06:17,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:17,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1182383984, now seen corresponding path program 1 times [2024-10-12 00:06:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:17,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603057106] [2024-10-12 00:06:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:17,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:18,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:18,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603057106] [2024-10-12 00:06:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603057106] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:18,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737677190] [2024-10-12 00:06:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:18,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:18,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:18,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:18,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:06:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:18,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:18,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:18,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:06:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737677190] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:06:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:06:18,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334274994] [2024-10-12 00:06:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:18,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:06:18,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:06:18,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:06:18,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-12 00:06:18,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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) [2024-10-12 00:06:18,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:18,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-12 00:06:18,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:19,253 INFO L124 PetriNetUnfolderBase]: 4950/6790 cut-off events. [2024-10-12 00:06:19,254 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-12 00:06:19,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13471 conditions, 6790 events. 4950/6790 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39112 event pairs, 3598 based on Foata normal form. 1/6019 useless extension candidates. Maximal degree in co-relation 13444. Up to 6379 conditions per place. [2024-10-12 00:06:19,315 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 28 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-10-12 00:06:19,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 215 flow [2024-10-12 00:06:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-10-12 00:06:19,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-10-12 00:06:19,318 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 149 flow. Second operand 6 states and 198 transitions. [2024-10-12 00:06:19,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 215 flow [2024-10-12 00:06:19,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:19,320 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 156 flow [2024-10-12 00:06:19,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-12 00:06:19,321 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-10-12 00:06:19,321 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 156 flow [2024-10-12 00:06:19,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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) [2024-10-12 00:06:19,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:19,322 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:06:19,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:19,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:19,524 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:19,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2000802717, now seen corresponding path program 1 times [2024-10-12 00:06:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811226704] [2024-10-12 00:06:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:19,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811226704] [2024-10-12 00:06:19,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811226704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360123608] [2024-10-12 00:06:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:19,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:19,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:19,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:19,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:06:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:19,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:19,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:19,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:19,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360123608] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:19,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:19,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:06:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805611405] [2024-10-12 00:06:19,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:19,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:06:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:19,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:06:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:06:19,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-12 00:06:19,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 28.083333333333332) internal successors, (337), 12 states have internal predecessors, (337), 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) [2024-10-12 00:06:19,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:19,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-12 00:06:19,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:20,625 INFO L124 PetriNetUnfolderBase]: 4953/6802 cut-off events. [2024-10-12 00:06:20,625 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-12 00:06:20,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13515 conditions, 6802 events. 4953/6802 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39135 event pairs, 3598 based on Foata normal form. 3/6031 useless extension candidates. Maximal degree in co-relation 13445. Up to 6386 conditions per place. [2024-10-12 00:06:20,685 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 31 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-10-12 00:06:20,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 298 flow [2024-10-12 00:06:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:06:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:06:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-10-12 00:06:20,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4953125 [2024-10-12 00:06:20,688 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 156 flow. Second operand 10 states and 317 transitions. [2024-10-12 00:06:20,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 298 flow [2024-10-12 00:06:20,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 252 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-12 00:06:20,692 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 208 flow [2024-10-12 00:06:20,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=208, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-10-12 00:06:20,693 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-10-12 00:06:20,693 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 208 flow [2024-10-12 00:06:20,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.083333333333332) internal successors, (337), 12 states have internal predecessors, (337), 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) [2024-10-12 00:06:20,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:20,694 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:20,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:06:20,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:20,895 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:20,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash 235104788, now seen corresponding path program 1 times [2024-10-12 00:06:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:20,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745380888] [2024-10-12 00:06:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:20,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:20,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745380888] [2024-10-12 00:06:20,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745380888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:20,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:20,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:06:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366337093] [2024-10-12 00:06:20,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:20,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:20,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-12 00:06:20,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:20,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:20,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-12 00:06:20,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:21,740 INFO L124 PetriNetUnfolderBase]: 4952/6801 cut-off events. [2024-10-12 00:06:21,741 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-12 00:06:21,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13512 conditions, 6801 events. 4952/6801 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39144 event pairs, 3598 based on Foata normal form. 1/6031 useless extension candidates. Maximal degree in co-relation 13478. Up to 6390 conditions per place. [2024-10-12 00:06:21,802 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 40 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-10-12 00:06:21,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 288 flow [2024-10-12 00:06:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-10-12 00:06:21,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-10-12 00:06:21,805 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 208 flow. Second operand 3 states and 121 transitions. [2024-10-12 00:06:21,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 288 flow [2024-10-12 00:06:21,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 278 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:21,807 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 198 flow [2024-10-12 00:06:21,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-12 00:06:21,808 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-10-12 00:06:21,809 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 198 flow [2024-10-12 00:06:21,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:21,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:21,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:21,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:06:21,809 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:21,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash 468397712, now seen corresponding path program 1 times [2024-10-12 00:06:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:21,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611192776] [2024-10-12 00:06:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611192776] [2024-10-12 00:06:22,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611192776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786760972] [2024-10-12 00:06:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:22,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:22,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:22,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:22,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:06:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:22,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 00:06:22,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:22,219 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 [2024-10-12 00:06:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:22,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:22,351 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 [2024-10-12 00:06:22,357 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 [2024-10-12 00:06:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:22,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786760972] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:22,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:22,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:06:22,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161357073] [2024-10-12 00:06:22,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:22,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 00:06:22,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:06:22,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:06:22,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-12 00:06:22,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 198 flow. Second operand has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:22,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:22,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-12 00:06:22,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:23,212 INFO L124 PetriNetUnfolderBase]: 7158/11821 cut-off events. [2024-10-12 00:06:23,212 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-12 00:06:23,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21384 conditions, 11821 events. 7158/11821 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 89689 event pairs, 2840 based on Foata normal form. 0/10520 useless extension candidates. Maximal degree in co-relation 21364. Up to 5414 conditions per place. [2024-10-12 00:06:23,485 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 65 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-10-12 00:06:23,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 101 transitions, 430 flow [2024-10-12 00:06:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:06:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:06:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 301 transitions. [2024-10-12 00:06:23,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.587890625 [2024-10-12 00:06:23,487 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 198 flow. Second operand 8 states and 301 transitions. [2024-10-12 00:06:23,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 101 transitions, 430 flow [2024-10-12 00:06:23,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:23,490 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 242 flow [2024-10-12 00:06:23,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-10-12 00:06:23,495 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-10-12 00:06:23,495 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 242 flow [2024-10-12 00:06:23,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:23,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:23,496 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:23,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 00:06:23,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:23,697 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:23,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:23,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1634668787, now seen corresponding path program 1 times [2024-10-12 00:06:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:23,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928167759] [2024-10-12 00:06:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:23,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:23,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928167759] [2024-10-12 00:06:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928167759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:23,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:23,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:06:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197127146] [2024-10-12 00:06:23,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:23,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:23,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-12 00:06:23,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-10-12 00:06:23,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:23,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-12 00:06:23,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:24,684 INFO L124 PetriNetUnfolderBase]: 6071/10307 cut-off events. [2024-10-12 00:06:24,685 INFO L125 PetriNetUnfolderBase]: For 3725/3725 co-relation queries the response was YES. [2024-10-12 00:06:24,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21346 conditions, 10307 events. 6071/10307 cut-off events. For 3725/3725 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 76316 event pairs, 1230 based on Foata normal form. 0/9485 useless extension candidates. Maximal degree in co-relation 21314. Up to 6718 conditions per place. [2024-10-12 00:06:24,785 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 63 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-10-12 00:06:24,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 440 flow [2024-10-12 00:06:24,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:24,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-10-12 00:06:24,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-10-12 00:06:24,787 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 242 flow. Second operand 3 states and 136 transitions. [2024-10-12 00:06:24,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 440 flow [2024-10-12 00:06:24,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 430 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:24,796 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 240 flow [2024-10-12 00:06:24,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-10-12 00:06:24,798 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2024-10-12 00:06:24,798 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 240 flow [2024-10-12 00:06:24,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-10-12 00:06:24,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:24,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:24,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:06:24,800 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:24,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2047895002, now seen corresponding path program 1 times [2024-10-12 00:06:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814381010] [2024-10-12 00:06:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:24,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:24,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814381010] [2024-10-12 00:06:24,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814381010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:24,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:24,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:24,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289890858] [2024-10-12 00:06:24,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:24,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:24,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:24,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:24,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:24,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-10-12 00:06:24,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-10-12 00:06:24,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:24,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-10-12 00:06:24,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:27,121 INFO L124 PetriNetUnfolderBase]: 14148/19671 cut-off events. [2024-10-12 00:06:27,122 INFO L125 PetriNetUnfolderBase]: For 10034/10034 co-relation queries the response was YES. [2024-10-12 00:06:27,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47280 conditions, 19671 events. 14148/19671 cut-off events. For 10034/10034 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 123377 event pairs, 7793 based on Foata normal form. 348/19358 useless extension candidates. Maximal degree in co-relation 47249. Up to 13466 conditions per place. [2024-10-12 00:06:27,301 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 93 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2024-10-12 00:06:27,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 596 flow [2024-10-12 00:06:27,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-10-12 00:06:27,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69921875 [2024-10-12 00:06:27,303 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 240 flow. Second operand 4 states and 179 transitions. [2024-10-12 00:06:27,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 596 flow [2024-10-12 00:06:27,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:27,317 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 265 flow [2024-10-12 00:06:27,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-10-12 00:06:27,319 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-10-12 00:06:27,319 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 265 flow [2024-10-12 00:06:27,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-10-12 00:06:27,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:27,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:27,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:06:27,321 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:27,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash -841345646, now seen corresponding path program 1 times [2024-10-12 00:06:27,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:27,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655007546] [2024-10-12 00:06:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:27,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:27,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:27,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655007546] [2024-10-12 00:06:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655007546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362297709] [2024-10-12 00:06:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:27,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:27,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-12 00:06:27,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-10-12 00:06:27,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:27,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-12 00:06:27,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:29,520 INFO L124 PetriNetUnfolderBase]: 12435/17088 cut-off events. [2024-10-12 00:06:29,521 INFO L125 PetriNetUnfolderBase]: For 7011/9154 co-relation queries the response was YES. [2024-10-12 00:06:29,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41895 conditions, 17088 events. 12435/17088 cut-off events. For 7011/9154 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 106679 event pairs, 6391 based on Foata normal form. 1694/18651 useless extension candidates. Maximal degree in co-relation 41863. Up to 11738 conditions per place. [2024-10-12 00:06:29,673 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 83 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-12 00:06:29,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 547 flow [2024-10-12 00:06:29,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-10-12 00:06:29,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-12 00:06:29,675 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 265 flow. Second operand 4 states and 176 transitions. [2024-10-12 00:06:29,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 547 flow [2024-10-12 00:06:29,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 109 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:29,688 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 283 flow [2024-10-12 00:06:29,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-10-12 00:06:29,689 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2024-10-12 00:06:29,689 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 283 flow [2024-10-12 00:06:29,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-10-12 00:06:29,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:29,690 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:06:29,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:06:29,690 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:29,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1363844897, now seen corresponding path program 2 times [2024-10-12 00:06:29,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690795260] [2024-10-12 00:06:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:29,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:29,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690795260] [2024-10-12 00:06:29,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690795260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:29,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008027873] [2024-10-12 00:06:29,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:06:29,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:29,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:29,818 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:29,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:06:29,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:06:29,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:29,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:06:29,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:06:29,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:06:29,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008027873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:29,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:29,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:06:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794136706] [2024-10-12 00:06:29,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:29,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:06:29,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:06:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:06:29,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-10-12 00:06:29,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 283 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 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) [2024-10-12 00:06:29,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:29,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-10-12 00:06:29,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:31,432 INFO L124 PetriNetUnfolderBase]: 8080/10861 cut-off events. [2024-10-12 00:06:31,433 INFO L125 PetriNetUnfolderBase]: For 10553/11928 co-relation queries the response was YES. [2024-10-12 00:06:31,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29278 conditions, 10861 events. 8080/10861 cut-off events. For 10553/11928 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 62416 event pairs, 5845 based on Foata normal form. 690/11264 useless extension candidates. Maximal degree in co-relation 29236. Up to 10328 conditions per place. [2024-10-12 00:06:31,567 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 32 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-10-12 00:06:31,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 75 transitions, 391 flow [2024-10-12 00:06:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:06:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:06:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 425 transitions. [2024-10-12 00:06:31,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47433035714285715 [2024-10-12 00:06:31,571 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 283 flow. Second operand 14 states and 425 transitions. [2024-10-12 00:06:31,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 75 transitions, 391 flow [2024-10-12 00:06:31,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 75 transitions, 373 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-12 00:06:31,590 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 309 flow [2024-10-12 00:06:31,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=309, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-10-12 00:06:31,591 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2024-10-12 00:06:31,591 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 309 flow [2024-10-12 00:06:31,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 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) [2024-10-12 00:06:31,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:31,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:31,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:06:31,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-12 00:06:31,793 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:31,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:31,794 INFO L85 PathProgramCache]: Analyzing trace with hash -953832204, now seen corresponding path program 1 times [2024-10-12 00:06:31,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:31,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954746691] [2024-10-12 00:06:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:31,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:31,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954746691] [2024-10-12 00:06:31,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954746691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:31,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:31,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:06:31,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619941699] [2024-10-12 00:06:31,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:31,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:31,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:31,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-12 00:06:31,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-12 00:06:31,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:31,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-12 00:06:31,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:33,084 INFO L124 PetriNetUnfolderBase]: 7639/12413 cut-off events. [2024-10-12 00:06:33,084 INFO L125 PetriNetUnfolderBase]: For 7743/9122 co-relation queries the response was YES. [2024-10-12 00:06:33,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29293 conditions, 12413 events. 7639/12413 cut-off events. For 7743/9122 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 90767 event pairs, 1874 based on Foata normal form. 781/12621 useless extension candidates. Maximal degree in co-relation 29195. Up to 7014 conditions per place. [2024-10-12 00:06:33,159 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 71 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2024-10-12 00:06:33,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 538 flow [2024-10-12 00:06:33,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-12 00:06:33,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-12 00:06:33,161 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 309 flow. Second operand 3 states and 134 transitions. [2024-10-12 00:06:33,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 538 flow [2024-10-12 00:06:33,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 97 transitions, 470 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-12 00:06:33,169 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 249 flow [2024-10-12 00:06:33,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-10-12 00:06:33,171 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2024-10-12 00:06:33,171 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 249 flow [2024-10-12 00:06:33,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-12 00:06:33,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:33,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:33,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:06:33,172 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:33,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1051645510, now seen corresponding path program 1 times [2024-10-12 00:06:33,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:33,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860341876] [2024-10-12 00:06:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:33,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:33,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:33,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860341876] [2024-10-12 00:06:33,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860341876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:33,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:33,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:33,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995025207] [2024-10-12 00:06:33,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:33,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:33,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:33,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-10-12 00:06:33,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:33,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:33,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-10-12 00:06:33,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:35,536 INFO L124 PetriNetUnfolderBase]: 17585/24476 cut-off events. [2024-10-12 00:06:35,536 INFO L125 PetriNetUnfolderBase]: For 19105/22212 co-relation queries the response was YES. [2024-10-12 00:06:35,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63330 conditions, 24476 events. 17585/24476 cut-off events. For 19105/22212 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 155755 event pairs, 9783 based on Foata normal form. 2014/25767 useless extension candidates. Maximal degree in co-relation 39489. Up to 16489 conditions per place. [2024-10-12 00:06:35,779 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 100 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-10-12 00:06:35,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 643 flow [2024-10-12 00:06:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-10-12 00:06:35,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69140625 [2024-10-12 00:06:35,781 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 249 flow. Second operand 4 states and 177 transitions. [2024-10-12 00:06:35,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 643 flow [2024-10-12 00:06:35,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 125 transitions, 631 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-12 00:06:35,800 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 270 flow [2024-10-12 00:06:35,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2024-10-12 00:06:35,801 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-10-12 00:06:35,801 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 270 flow [2024-10-12 00:06:35,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:35,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:35,802 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:35,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 00:06:35,802 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:35,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash 495972642, now seen corresponding path program 1 times [2024-10-12 00:06:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741916354] [2024-10-12 00:06:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741916354] [2024-10-12 00:06:35,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741916354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:35,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:35,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:06:35,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157286670] [2024-10-12 00:06:35,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:35,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:35,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-10-12 00:06:35,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-12 00:06:35,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:35,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-10-12 00:06:35,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:37,074 INFO L124 PetriNetUnfolderBase]: 10593/16958 cut-off events. [2024-10-12 00:06:37,074 INFO L125 PetriNetUnfolderBase]: For 11689/13765 co-relation queries the response was YES. [2024-10-12 00:06:37,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44271 conditions, 16958 events. 10593/16958 cut-off events. For 11689/13765 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 124877 event pairs, 1914 based on Foata normal form. 1216/17935 useless extension candidates. Maximal degree in co-relation 28847. Up to 10867 conditions per place. [2024-10-12 00:06:37,200 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 74 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-12 00:06:37,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 509 flow [2024-10-12 00:06:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-10-12 00:06:37,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-12 00:06:37,203 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 270 flow. Second operand 3 states and 135 transitions. [2024-10-12 00:06:37,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 509 flow [2024-10-12 00:06:37,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:37,249 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 275 flow [2024-10-12 00:06:37,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-10-12 00:06:37,249 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2024-10-12 00:06:37,250 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 275 flow [2024-10-12 00:06:37,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-12 00:06:37,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:37,250 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:37,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 00:06:37,251 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:37,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 901598958, now seen corresponding path program 1 times [2024-10-12 00:06:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:37,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753415400] [2024-10-12 00:06:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:37,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753415400] [2024-10-12 00:06:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753415400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442909135] [2024-10-12 00:06:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:37,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:37,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:37,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:37,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:06:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:37,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:06:37,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:37,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:37,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442909135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:37,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:37,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-12 00:06:37,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862802212] [2024-10-12 00:06:37,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:37,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 00:06:37,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 00:06:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:06:37,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-10-12 00:06:37,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 275 flow. Second operand has 20 states, 20 states have (on average 24.75) internal successors, (495), 20 states have internal predecessors, (495), 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) [2024-10-12 00:06:37,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:37,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-10-12 00:06:37,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:41,606 INFO L124 PetriNetUnfolderBase]: 26041/35719 cut-off events. [2024-10-12 00:06:41,606 INFO L125 PetriNetUnfolderBase]: For 25775/34549 co-relation queries the response was YES. [2024-10-12 00:06:41,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94838 conditions, 35719 events. 26041/35719 cut-off events. For 25775/34549 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 236250 event pairs, 15435 based on Foata normal form. 4931/40311 useless extension candidates. Maximal degree in co-relation 58233. Up to 21839 conditions per place. [2024-10-12 00:06:42,026 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 132 selfloop transitions, 18 changer transitions 0/171 dead transitions. [2024-10-12 00:06:42,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 884 flow [2024-10-12 00:06:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:06:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:06:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 348 transitions. [2024-10-12 00:06:42,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-10-12 00:06:42,029 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 275 flow. Second operand 10 states and 348 transitions. [2024-10-12 00:06:42,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 884 flow [2024-10-12 00:06:42,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 880 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:42,097 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 361 flow [2024-10-12 00:06:42,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-10-12 00:06:42,099 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 31 predicate places. [2024-10-12 00:06:42,099 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 361 flow [2024-10-12 00:06:42,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 24.75) internal successors, (495), 20 states have internal predecessors, (495), 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) [2024-10-12 00:06:42,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:42,100 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:42,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 00:06:42,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 00:06:42,301 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:42,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1047540111, now seen corresponding path program 1 times [2024-10-12 00:06:42,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:42,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708352955] [2024-10-12 00:06:42,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:42,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:42,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708352955] [2024-10-12 00:06:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708352955] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743573540] [2024-10-12 00:06:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:42,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:42,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:42,436 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:42,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:06:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:42,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:06:42,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:42,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743573540] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:42,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:42,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-12 00:06:42,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855873749] [2024-10-12 00:06:42,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:42,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 00:06:42,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 00:06:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-12 00:06:42,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-10-12 00:06:42,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 361 flow. Second operand has 19 states, 19 states have (on average 24.105263157894736) internal successors, (458), 19 states have internal predecessors, (458), 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) [2024-10-12 00:06:42,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:42,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-10-12 00:06:42,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:46,985 INFO L124 PetriNetUnfolderBase]: 27908/38334 cut-off events. [2024-10-12 00:06:46,985 INFO L125 PetriNetUnfolderBase]: For 57609/64261 co-relation queries the response was YES. [2024-10-12 00:06:47,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113920 conditions, 38334 events. 27908/38334 cut-off events. For 57609/64261 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 252499 event pairs, 6952 based on Foata normal form. 3910/41574 useless extension candidates. Maximal degree in co-relation 78292. Up to 6812 conditions per place. [2024-10-12 00:06:47,318 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 233 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-10-12 00:06:47,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 279 transitions, 1691 flow [2024-10-12 00:06:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:06:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:06:47,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 516 transitions. [2024-10-12 00:06:47,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5758928571428571 [2024-10-12 00:06:47,321 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 361 flow. Second operand 14 states and 516 transitions. [2024-10-12 00:06:47,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 279 transitions, 1691 flow [2024-10-12 00:06:47,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 279 transitions, 1658 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-12 00:06:47,459 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 406 flow [2024-10-12 00:06:47,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=406, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2024-10-12 00:06:47,460 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 39 predicate places. [2024-10-12 00:06:47,460 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 406 flow [2024-10-12 00:06:47,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.105263157894736) internal successors, (458), 19 states have internal predecessors, (458), 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) [2024-10-12 00:06:47,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:47,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:47,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 00:06:47,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 00:06:47,666 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:47,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:47,666 INFO L85 PathProgramCache]: Analyzing trace with hash -634419607, now seen corresponding path program 1 times [2024-10-12 00:06:47,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584956157] [2024-10-12 00:06:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584956157] [2024-10-12 00:06:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584956157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855907061] [2024-10-12 00:06:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:47,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:47,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:47,862 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:47,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:06:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:47,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 00:06:47,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:47,963 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 [2024-10-12 00:06:47,985 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 [2024-10-12 00:06:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:47,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:48,054 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 [2024-10-12 00:06:48,058 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 [2024-10-12 00:06:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:48,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855907061] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:48,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:48,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-12 00:06:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126326853] [2024-10-12 00:06:48,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:48,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 00:06:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:06:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:06:48,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-10-12 00:06:48,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 31.9) internal successors, (319), 10 states have internal predecessors, (319), 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) [2024-10-12 00:06:48,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:48,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-10-12 00:06:48,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:50,551 INFO L124 PetriNetUnfolderBase]: 13482/19771 cut-off events. [2024-10-12 00:06:50,552 INFO L125 PetriNetUnfolderBase]: For 32694/35902 co-relation queries the response was YES. [2024-10-12 00:06:50,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58896 conditions, 19771 events. 13482/19771 cut-off events. For 32694/35902 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 138411 event pairs, 10511 based on Foata normal form. 2184/21465 useless extension candidates. Maximal degree in co-relation 36071. Up to 17611 conditions per place. [2024-10-12 00:06:50,679 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 49 selfloop transitions, 8 changer transitions 1/86 dead transitions. [2024-10-12 00:06:50,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 86 transitions, 516 flow [2024-10-12 00:06:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-10-12 00:06:50,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-10-12 00:06:50,681 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 406 flow. Second operand 6 states and 207 transitions. [2024-10-12 00:06:50,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 86 transitions, 516 flow [2024-10-12 00:06:50,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 86 transitions, 475 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-10-12 00:06:50,750 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 372 flow [2024-10-12 00:06:50,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-10-12 00:06:50,754 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-10-12 00:06:50,754 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 372 flow [2024-10-12 00:06:50,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.9) internal successors, (319), 10 states have internal predecessors, (319), 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) [2024-10-12 00:06:50,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:50,755 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:50,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 00:06:50,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:50,960 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:50,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1564027030, now seen corresponding path program 2 times [2024-10-12 00:06:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:50,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664534208] [2024-10-12 00:06:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664534208] [2024-10-12 00:06:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664534208] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520928205] [2024-10-12 00:06:51,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:06:51,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:51,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:51,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:51,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:06:51,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:06:51,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:06:51,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 00:06:51,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:51,464 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 [2024-10-12 00:06:51,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:06:51,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-10-12 00:06:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:51,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:51,628 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 [2024-10-12 00:06:51,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-12 00:06:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520928205] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:51,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:51,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-12 00:06:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213854508] [2024-10-12 00:06:51,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:51,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 00:06:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 00:06:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-12 00:06:51,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-10-12 00:06:51,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 372 flow. Second operand has 19 states, 19 states have (on average 25.789473684210527) internal successors, (490), 19 states have internal predecessors, (490), 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) [2024-10-12 00:06:51,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:51,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-10-12 00:06:51,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:55,888 INFO L124 PetriNetUnfolderBase]: 25662/36082 cut-off events. [2024-10-12 00:06:55,888 INFO L125 PetriNetUnfolderBase]: For 36433/42493 co-relation queries the response was YES. [2024-10-12 00:06:56,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101144 conditions, 36082 events. 25662/36082 cut-off events. For 36433/42493 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 245934 event pairs, 6655 based on Foata normal form. 2863/38784 useless extension candidates. Maximal degree in co-relation 78360. Up to 7980 conditions per place. [2024-10-12 00:06:56,185 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 175 selfloop transitions, 21 changer transitions 6/225 dead transitions. [2024-10-12 00:06:56,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 225 transitions, 1225 flow [2024-10-12 00:06:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:06:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:06:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 499 transitions. [2024-10-12 00:06:56,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5569196428571429 [2024-10-12 00:06:56,187 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 372 flow. Second operand 14 states and 499 transitions. [2024-10-12 00:06:56,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 225 transitions, 1225 flow [2024-10-12 00:06:56,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 225 transitions, 1214 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:56,294 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 442 flow [2024-10-12 00:06:56,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=442, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2024-10-12 00:06:56,295 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 44 predicate places. [2024-10-12 00:06:56,295 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 442 flow [2024-10-12 00:06:56,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.789473684210527) internal successors, (490), 19 states have internal predecessors, (490), 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) [2024-10-12 00:06:56,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:56,296 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:56,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:06:56,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 00:06:56,497 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:06:56,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2075008593, now seen corresponding path program 1 times [2024-10-12 00:06:56,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:56,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987599002] [2024-10-12 00:06:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:56,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:56,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987599002] [2024-10-12 00:06:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987599002] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:56,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946404393] [2024-10-12 00:06:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:56,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:56,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:56,566 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:56,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:06:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:56,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:06:56,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:56,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:56,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946404393] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:56,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:56,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-12 00:06:56,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659651048] [2024-10-12 00:06:56,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:56,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 00:06:56,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 00:06:56,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-12 00:06:56,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-10-12 00:06:56,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 442 flow. Second operand has 19 states, 19 states have (on average 24.31578947368421) internal successors, (462), 19 states have internal predecessors, (462), 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) [2024-10-12 00:06:56,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:56,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-10-12 00:06:56,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:01,688 INFO L124 PetriNetUnfolderBase]: 30062/42243 cut-off events. [2024-10-12 00:07:01,689 INFO L125 PetriNetUnfolderBase]: For 108707/111130 co-relation queries the response was YES. [2024-10-12 00:07:01,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136767 conditions, 42243 events. 30062/42243 cut-off events. For 108707/111130 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 284583 event pairs, 7088 based on Foata normal form. 797/42218 useless extension candidates. Maximal degree in co-relation 111474. Up to 7901 conditions per place. [2024-10-12 00:07:02,046 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 166 selfloop transitions, 19 changer transitions 77/281 dead transitions. [2024-10-12 00:07:02,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 281 transitions, 1962 flow [2024-10-12 00:07:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:07:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:07:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 498 transitions. [2024-10-12 00:07:02,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5558035714285714 [2024-10-12 00:07:02,049 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 442 flow. Second operand 14 states and 498 transitions. [2024-10-12 00:07:02,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 281 transitions, 1962 flow [2024-10-12 00:07:02,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 281 transitions, 1817 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-10-12 00:07:02,228 INFO L231 Difference]: Finished difference. Result has 113 places, 76 transitions, 357 flow [2024-10-12 00:07:02,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=357, PETRI_PLACES=113, PETRI_TRANSITIONS=76} [2024-10-12 00:07:02,229 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 46 predicate places. [2024-10-12 00:07:02,229 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 76 transitions, 357 flow [2024-10-12 00:07:02,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.31578947368421) internal successors, (462), 19 states have internal predecessors, (462), 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) [2024-10-12 00:07:02,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:02,229 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:02,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 00:07:02,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 00:07:02,434 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:07:02,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash -530621422, now seen corresponding path program 1 times [2024-10-12 00:07:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:02,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441704260] [2024-10-12 00:07:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:07:02,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441704260] [2024-10-12 00:07:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441704260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507179049] [2024-10-12 00:07:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:02,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:02,498 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:07:02,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:07:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:02,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:07:02,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:07:02,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:07:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:07:02,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507179049] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:07:02,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:07:02,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:07:02,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569444921] [2024-10-12 00:07:02,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:07:02,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:07:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:07:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:07:02,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-10-12 00:07:02,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 76 transitions, 357 flow. Second operand has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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) [2024-10-12 00:07:02,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:02,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-10-12 00:07:02,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:07:08,062 INFO L124 PetriNetUnfolderBase]: 37201/53641 cut-off events. [2024-10-12 00:07:08,063 INFO L125 PetriNetUnfolderBase]: For 112691/116393 co-relation queries the response was YES. [2024-10-12 00:07:08,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168291 conditions, 53641 events. 37201/53641 cut-off events. For 112691/116393 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 375451 event pairs, 12361 based on Foata normal form. 1560/54684 useless extension candidates. Maximal degree in co-relation 168199. Up to 21257 conditions per place. [2024-10-12 00:07:08,601 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 264 selfloop transitions, 13 changer transitions 0/297 dead transitions. [2024-10-12 00:07:08,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 297 transitions, 2041 flow [2024-10-12 00:07:08,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:07:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:07:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 445 transitions. [2024-10-12 00:07:08,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2024-10-12 00:07:08,603 INFO L175 Difference]: Start difference. First operand has 113 places, 76 transitions, 357 flow. Second operand 10 states and 445 transitions. [2024-10-12 00:07:08,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 297 transitions, 2041 flow [2024-10-12 00:07:08,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 297 transitions, 1830 flow, removed 31 selfloop flow, removed 14 redundant places. [2024-10-12 00:07:08,726 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 368 flow [2024-10-12 00:07:08,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=368, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-10-12 00:07:08,727 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-10-12 00:07:08,727 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 368 flow [2024-10-12 00:07:08,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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) [2024-10-12 00:07:08,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:07:08,727 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:07:08,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 00:07:08,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 00:07:08,928 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-10-12 00:07:08,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:07:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash 208596972, now seen corresponding path program 1 times [2024-10-12 00:07:08,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:07:08,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123231342] [2024-10-12 00:07:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:07:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:07:08,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:07:08,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123231342] [2024-10-12 00:07:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123231342] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:07:08,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944852293] [2024-10-12 00:07:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:07:08,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:07:08,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:07:08,985 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:07:08,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:07:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:07:09,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:07:09,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:07:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:07:09,093 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:07:09,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944852293] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:07:09,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:07:09,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-12 00:07:09,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544159954] [2024-10-12 00:07:09,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:07:09,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:07:09,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:07:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:07:09,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:07:09,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-10-12 00:07:09,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:07:09,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:07:09,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-10-12 00:07:09,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand