./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/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:47:25,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:47:25,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:47:25,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:47:25,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:47:25,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:47:25,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:47:25,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:47:25,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:47:25,694 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:47:25,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:47:25,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:47:25,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:47:25,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:47:25,695 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:47:25,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:47:25,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:47:25,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:47:25,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:47:25,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:47:25,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:47:25,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:47:25,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:47:25,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:47:25,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:47:25,698 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:47:25,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:47:25,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:47:25,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:47:25,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:47:25,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:47:25,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:47:25,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:47:25,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:47:25,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:47:25,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:47:25,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:47:25,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:47:25,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:47:25,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:47:25,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:47:25,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:47:25,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:47:25,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:47:25,702 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-10-13 16:47:25,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:47:25,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:47:25,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:47:25,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:47:25,956 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:47:25,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-13 16:47:27,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:47:27,270 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:47:27,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-13 16:47:27,277 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff989fc/45662d69f6994ba68aee6dcc926fc880/FLAG4fd15486b [2024-10-13 16:47:27,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff989fc/45662d69f6994ba68aee6dcc926fc880 [2024-10-13 16:47:27,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:47:27,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:47:27,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:47:27,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:47:27,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:47:27,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:27,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccbf627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27, skipping insertion in model container [2024-10-13 16:47:27,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:27,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:47:27,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:47:27,903 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:47:27,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:47:27,939 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:47:27,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27 WrapperNode [2024-10-13 16:47:27,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:47:27,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:47:27,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:47:27,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:47:27,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:27,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:27,980 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 173 [2024-10-13 16:47:27,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:47:27,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:47:27,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:47:27,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:47:27,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:27,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:27,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:28,013 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-13 16:47:28,014 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:28,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:28,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:28,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:28,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:28,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:28,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:47:28,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:47:28,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:47:28,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:47:28,028 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (1/1) ... [2024-10-13 16:47:28,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:47:28,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:28,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:47:28,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:47:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:47:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:47:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:47:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:47:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:47:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:47:28,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:47:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:47:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:47:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:47:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:47:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:47:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:47:28,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:47:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:47:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:47:28,118 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:47:28,236 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:47:28,239 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:47:28,564 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:47:28,564 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:47:28,805 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:47:28,805 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 16:47:28,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:28 BoogieIcfgContainer [2024-10-13 16:47:28,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:47:28,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:47:28,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:47:28,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:47:28,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:47:27" (1/3) ... [2024-10-13 16:47:28,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c028243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:47:28, skipping insertion in model container [2024-10-13 16:47:28,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:27" (2/3) ... [2024-10-13 16:47:28,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c028243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:47:28, skipping insertion in model container [2024-10-13 16:47:28,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:28" (3/3) ... [2024-10-13 16:47:28,814 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-10-13 16:47:28,827 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:47:28,828 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-13 16:47:28,828 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:47:28,885 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:47:28,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 199 flow [2024-10-13 16:47:28,956 INFO L124 PetriNetUnfolderBase]: 15/86 cut-off events. [2024-10-13 16:47:28,957 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:47:28,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 15/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 263 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2024-10-13 16:47:28,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 199 flow [2024-10-13 16:47:28,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 84 transitions, 183 flow [2024-10-13 16:47:28,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:47:28,975 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;@41cfc36d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:47:28,976 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-13 16:47:28,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:47:28,980 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:47:28,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:47:28,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:28,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:47:28,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:28,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:28,987 INFO L85 PathProgramCache]: Analyzing trace with hash 776768, now seen corresponding path program 1 times [2024-10-13 16:47:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:28,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705441743] [2024-10-13 16:47:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:29,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:29,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705441743] [2024-10-13 16:47:29,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705441743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:29,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:29,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:29,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272366380] [2024-10-13 16:47:29,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:29,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:29,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:29,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-13 16:47:29,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:29,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:29,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-13 16:47:29,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:29,869 INFO L124 PetriNetUnfolderBase]: 4003/6628 cut-off events. [2024-10-13 16:47:29,870 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-10-13 16:47:29,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11955 conditions, 6628 events. 4003/6628 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 42102 event pairs, 2534 based on Foata normal form. 3/4630 useless extension candidates. Maximal degree in co-relation 11334. Up to 5097 conditions per place. [2024-10-13 16:47:29,921 INFO L140 encePairwiseOnDemand]: 73/89 looper letters, 53 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2024-10-13 16:47:29,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 327 flow [2024-10-13 16:47:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-10-13 16:47:29,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5646067415730337 [2024-10-13 16:47:29,935 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 183 flow. Second operand 4 states and 201 transitions. [2024-10-13 16:47:29,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 327 flow [2024-10-13 16:47:29,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 93 transitions, 318 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:47:29,943 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 262 flow [2024-10-13 16:47:29,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-10-13 16:47:29,948 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-10-13 16:47:29,948 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 262 flow [2024-10-13 16:47:29,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:29,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:29,949 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:47:29,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:47:29,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:29,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1666630010, now seen corresponding path program 1 times [2024-10-13 16:47:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:29,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834161720] [2024-10-13 16:47:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:30,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834161720] [2024-10-13 16:47:30,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834161720] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:47:30,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943863921] [2024-10-13 16:47:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:30,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:30,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:30,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:47:30,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:47:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:30,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:47:30,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:47:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:30,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:47:30,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943863921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:30,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:47:30,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:47:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741193704] [2024-10-13 16:47:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:30,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:30,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:30,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:47:30,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-13 16:47:30,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2024-10-13 16:47:30,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:30,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-13 16:47:30,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:30,692 INFO L124 PetriNetUnfolderBase]: 4003/6625 cut-off events. [2024-10-13 16:47:30,692 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-10-13 16:47:30,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 6625 events. 4003/6625 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 42052 event pairs, 2534 based on Foata normal form. 3/4632 useless extension candidates. Maximal degree in co-relation 11827. Up to 5082 conditions per place. [2024-10-13 16:47:30,723 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 43 selfloop transitions, 17 changer transitions 0/90 dead transitions. [2024-10-13 16:47:30,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 370 flow [2024-10-13 16:47:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:47:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:47:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-10-13 16:47:30,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4887640449438202 [2024-10-13 16:47:30,726 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 262 flow. Second operand 6 states and 261 transitions. [2024-10-13 16:47:30,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 370 flow [2024-10-13 16:47:30,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:47:30,728 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 284 flow [2024-10-13 16:47:30,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2024-10-13 16:47:30,729 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2024-10-13 16:47:30,730 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 284 flow [2024-10-13 16:47:30,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2024-10-13 16:47:30,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:30,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:47:30,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:47:30,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:30,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:30,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash 125923534, now seen corresponding path program 1 times [2024-10-13 16:47:30,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:30,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473522018] [2024-10-13 16:47:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:30,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:31,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473522018] [2024-10-13 16:47:31,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473522018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:47:31,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677060748] [2024-10-13 16:47:31,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:31,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:31,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:31,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:47:31,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:47:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:31,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:47:31,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:47:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:31,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:47:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:31,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677060748] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:47:31,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:47:31,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:47:31,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570939058] [2024-10-13 16:47:31,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:47:31,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:47:31,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:31,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:47:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:47:31,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-13 16:47:31,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 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) [2024-10-13 16:47:31,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:31,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-13 16:47:31,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:31,756 INFO L124 PetriNetUnfolderBase]: 4012/6661 cut-off events. [2024-10-13 16:47:31,757 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-13 16:47:31,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12041 conditions, 6661 events. 4012/6661 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42472 event pairs, 2534 based on Foata normal form. 9/4674 useless extension candidates. Maximal degree in co-relation 11829. Up to 5097 conditions per place. [2024-10-13 16:47:31,815 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 50 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2024-10-13 16:47:31,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 117 transitions, 632 flow [2024-10-13 16:47:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:47:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:47:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2024-10-13 16:47:31,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4786516853932584 [2024-10-13 16:47:31,818 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 284 flow. Second operand 10 states and 426 transitions. [2024-10-13 16:47:31,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 117 transitions, 632 flow [2024-10-13 16:47:31,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 549 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-13 16:47:31,821 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 499 flow [2024-10-13 16:47:31,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=499, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2024-10-13 16:47:31,822 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2024-10-13 16:47:31,822 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 499 flow [2024-10-13 16:47:31,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 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) [2024-10-13 16:47:31,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:31,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:31,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:47:32,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 16:47:32,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:32,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:32,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1491485579, now seen corresponding path program 1 times [2024-10-13 16:47:32,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:32,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144621270] [2024-10-13 16:47:32,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:32,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:32,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144621270] [2024-10-13 16:47:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144621270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:32,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:32,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137385366] [2024-10-13 16:47:32,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:32,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:32,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:32,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-10-13 16:47:32,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-10-13 16:47:32,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:32,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-10-13 16:47:32,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:32,710 INFO L124 PetriNetUnfolderBase]: 7217/10894 cut-off events. [2024-10-13 16:47:32,711 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-10-13 16:47:32,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20680 conditions, 10894 events. 7217/10894 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 63683 event pairs, 3494 based on Foata normal form. 146/7925 useless extension candidates. Maximal degree in co-relation 20582. Up to 6976 conditions per place. [2024-10-13 16:47:32,756 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 139 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2024-10-13 16:47:32,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 173 transitions, 903 flow [2024-10-13 16:47:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-10-13 16:47:32,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7106741573033708 [2024-10-13 16:47:32,758 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 499 flow. Second operand 4 states and 253 transitions. [2024-10-13 16:47:32,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 173 transitions, 903 flow [2024-10-13 16:47:32,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 173 transitions, 866 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:32,762 INFO L231 Difference]: Finished difference. Result has 92 places, 120 transitions, 491 flow [2024-10-13 16:47:32,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=92, PETRI_TRANSITIONS=120} [2024-10-13 16:47:32,763 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2024-10-13 16:47:32,763 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 120 transitions, 491 flow [2024-10-13 16:47:32,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-10-13 16:47:32,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:32,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:32,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:47:32,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:32,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1008619896, now seen corresponding path program 1 times [2024-10-13 16:47:32,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:32,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428967321] [2024-10-13 16:47:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:32,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:32,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428967321] [2024-10-13 16:47:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428967321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:32,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:32,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:32,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049215466] [2024-10-13 16:47:32,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:32,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:47:32,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:47:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:47:32,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-13 16:47:32,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 120 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2024-10-13 16:47:32,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:32,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-13 16:47:32,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:34,261 INFO L124 PetriNetUnfolderBase]: 13551/22409 cut-off events. [2024-10-13 16:47:34,261 INFO L125 PetriNetUnfolderBase]: For 2780/2780 co-relation queries the response was YES. [2024-10-13 16:47:34,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42722 conditions, 22409 events. 13551/22409 cut-off events. For 2780/2780 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 170572 event pairs, 8268 based on Foata normal form. 230/16741 useless extension candidates. Maximal degree in co-relation 42598. Up to 8647 conditions per place. [2024-10-13 16:47:34,383 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 135 selfloop transitions, 9 changer transitions 0/176 dead transitions. [2024-10-13 16:47:34,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 176 transitions, 974 flow [2024-10-13 16:47:34,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 281 transitions. [2024-10-13 16:47:34,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6314606741573033 [2024-10-13 16:47:34,385 INFO L175 Difference]: Start difference. First operand has 92 places, 120 transitions, 491 flow. Second operand 5 states and 281 transitions. [2024-10-13 16:47:34,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 176 transitions, 974 flow [2024-10-13 16:47:34,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 176 transitions, 969 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:47:34,391 INFO L231 Difference]: Finished difference. Result has 97 places, 121 transitions, 522 flow [2024-10-13 16:47:34,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=97, PETRI_TRANSITIONS=121} [2024-10-13 16:47:34,392 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-10-13 16:47:34,392 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 121 transitions, 522 flow [2024-10-13 16:47:34,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2024-10-13 16:47:34,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:34,393 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:34,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:47:34,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:34,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash 763029596, now seen corresponding path program 1 times [2024-10-13 16:47:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:34,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105763455] [2024-10-13 16:47:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:34,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105763455] [2024-10-13 16:47:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105763455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:34,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476294783] [2024-10-13 16:47:34,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:34,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:34,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-10-13 16:47:34,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 121 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-10-13 16:47:34,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:34,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-10-13 16:47:34,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:36,369 INFO L124 PetriNetUnfolderBase]: 22204/33004 cut-off events. [2024-10-13 16:47:36,370 INFO L125 PetriNetUnfolderBase]: For 4096/4456 co-relation queries the response was YES. [2024-10-13 16:47:36,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66410 conditions, 33004 events. 22204/33004 cut-off events. For 4096/4456 co-relation queries the response was YES. Maximal size of possible extension queue 1052. Compared 217860 event pairs, 10634 based on Foata normal form. 448/25807 useless extension candidates. Maximal degree in co-relation 66282. Up to 21124 conditions per place. [2024-10-13 16:47:36,528 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 143 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-10-13 16:47:36,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 179 transitions, 962 flow [2024-10-13 16:47:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-13 16:47:36,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7050561797752809 [2024-10-13 16:47:36,530 INFO L175 Difference]: Start difference. First operand has 97 places, 121 transitions, 522 flow. Second operand 4 states and 251 transitions. [2024-10-13 16:47:36,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 179 transitions, 962 flow [2024-10-13 16:47:36,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 179 transitions, 959 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 16:47:36,537 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 548 flow [2024-10-13 16:47:36,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2024-10-13 16:47:36,539 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2024-10-13 16:47:36,540 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 548 flow [2024-10-13 16:47:36,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-10-13 16:47:36,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:36,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:36,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:47:36,541 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:36,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:36,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1202446551, now seen corresponding path program 1 times [2024-10-13 16:47:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:36,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257768419] [2024-10-13 16:47:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:36,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:36,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257768419] [2024-10-13 16:47:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257768419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:36,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:36,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:36,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339059475] [2024-10-13 16:47:36,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:36,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:47:36,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:36,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:47:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:47:36,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-13 16:47:36,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2024-10-13 16:47:36,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:36,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-13 16:47:36,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:40,512 INFO L124 PetriNetUnfolderBase]: 39672/66276 cut-off events. [2024-10-13 16:47:40,513 INFO L125 PetriNetUnfolderBase]: For 18639/18711 co-relation queries the response was YES. [2024-10-13 16:47:40,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135360 conditions, 66276 events. 39672/66276 cut-off events. For 18639/18711 co-relation queries the response was YES. Maximal size of possible extension queue 2561. Compared 581585 event pairs, 24248 based on Foata normal form. 656/54034 useless extension candidates. Maximal degree in co-relation 135145. Up to 24784 conditions per place. [2024-10-13 16:47:40,892 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 155 selfloop transitions, 12 changer transitions 0/200 dead transitions. [2024-10-13 16:47:40,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 200 transitions, 1212 flow [2024-10-13 16:47:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:47:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:47:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 364 transitions. [2024-10-13 16:47:40,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5842696629213483 [2024-10-13 16:47:40,894 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 548 flow. Second operand 7 states and 364 transitions. [2024-10-13 16:47:40,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 200 transitions, 1212 flow [2024-10-13 16:47:40,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 200 transitions, 1207 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:47:40,926 INFO L231 Difference]: Finished difference. Result has 111 places, 133 transitions, 667 flow [2024-10-13 16:47:40,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=111, PETRI_TRANSITIONS=133} [2024-10-13 16:47:40,928 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2024-10-13 16:47:40,928 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 133 transitions, 667 flow [2024-10-13 16:47:40,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2024-10-13 16:47:40,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:40,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:40,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:47:40,929 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:40,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2115853692, now seen corresponding path program 1 times [2024-10-13 16:47:40,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:40,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422678202] [2024-10-13 16:47:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:40,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:41,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422678202] [2024-10-13 16:47:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422678202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:41,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:41,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:47:41,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103962944] [2024-10-13 16:47:41,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:41,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:47:41,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:47:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:47:41,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-13 16:47:41,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 133 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2024-10-13 16:47:41,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:41,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-13 16:47:41,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:49,654 INFO L124 PetriNetUnfolderBase]: 82740/136532 cut-off events. [2024-10-13 16:47:49,654 INFO L125 PetriNetUnfolderBase]: For 25675/25819 co-relation queries the response was YES. [2024-10-13 16:47:50,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273074 conditions, 136532 events. 82740/136532 cut-off events. For 25675/25819 co-relation queries the response was YES. Maximal size of possible extension queue 5112. Compared 1285217 event pairs, 50552 based on Foata normal form. 920/108364 useless extension candidates. Maximal degree in co-relation 272852. Up to 52400 conditions per place. [2024-10-13 16:47:50,579 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 121 selfloop transitions, 20 changer transitions 0/176 dead transitions. [2024-10-13 16:47:50,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 176 transitions, 1065 flow [2024-10-13 16:47:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 278 transitions. [2024-10-13 16:47:50,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6247191011235955 [2024-10-13 16:47:50,580 INFO L175 Difference]: Start difference. First operand has 111 places, 133 transitions, 667 flow. Second operand 5 states and 278 transitions. [2024-10-13 16:47:50,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 176 transitions, 1065 flow [2024-10-13 16:47:50,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 176 transitions, 1063 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 16:47:50,661 INFO L231 Difference]: Finished difference. Result has 117 places, 134 transitions, 722 flow [2024-10-13 16:47:50,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=722, PETRI_PLACES=117, PETRI_TRANSITIONS=134} [2024-10-13 16:47:50,662 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-10-13 16:47:50,662 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 134 transitions, 722 flow [2024-10-13 16:47:50,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2024-10-13 16:47:50,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:50,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:50,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:47:50,663 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:50,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:50,663 INFO L85 PathProgramCache]: Analyzing trace with hash -674956817, now seen corresponding path program 1 times [2024-10-13 16:47:50,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:50,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770451495] [2024-10-13 16:47:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:50,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:50,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:50,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770451495] [2024-10-13 16:47:50,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770451495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:47:50,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299160468] [2024-10-13 16:47:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:50,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:50,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:47:50,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:47:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:50,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:47:50,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:47:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:47:50,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:47:50,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299160468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:50,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:47:50,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-13 16:47:50,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170041659] [2024-10-13 16:47:50,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:50,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:47:50,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:47:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:47:50,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 89 [2024-10-13 16:47:50,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 134 transitions, 722 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-10-13 16:47:50,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:50,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 89 [2024-10-13 16:47:50,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:58,432 INFO L124 PetriNetUnfolderBase]: 74320/124980 cut-off events. [2024-10-13 16:47:58,432 INFO L125 PetriNetUnfolderBase]: For 32565/32709 co-relation queries the response was YES. [2024-10-13 16:47:58,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250851 conditions, 124980 events. 74320/124980 cut-off events. For 32565/32709 co-relation queries the response was YES. Maximal size of possible extension queue 4460. Compared 1185120 event pairs, 46544 based on Foata normal form. 1496/101512 useless extension candidates. Maximal degree in co-relation 250623. Up to 92978 conditions per place. [2024-10-13 16:47:59,570 INFO L140 encePairwiseOnDemand]: 87/89 looper letters, 95 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2024-10-13 16:47:59,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 132 transitions, 900 flow [2024-10-13 16:47:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:47:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:47:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-10-13 16:47:59,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104868913857678 [2024-10-13 16:47:59,572 INFO L175 Difference]: Start difference. First operand has 117 places, 134 transitions, 722 flow. Second operand 3 states and 163 transitions. [2024-10-13 16:47:59,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 132 transitions, 900 flow [2024-10-13 16:47:59,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 132 transitions, 858 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:47:59,646 INFO L231 Difference]: Finished difference. Result has 113 places, 132 transitions, 668 flow [2024-10-13 16:47:59,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=668, PETRI_PLACES=113, PETRI_TRANSITIONS=132} [2024-10-13 16:47:59,647 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2024-10-13 16:47:59,647 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 132 transitions, 668 flow [2024-10-13 16:47:59,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-10-13 16:47:59,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:59,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:59,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:47:59,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:59,849 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-13 16:47:59,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1166954146, now seen corresponding path program 1 times [2024-10-13 16:47:59,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:59,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372038354] [2024-10-13 16:47:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:59,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372038354] [2024-10-13 16:47:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372038354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:59,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:59,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:59,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668064585] [2024-10-13 16:47:59,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:59,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:59,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:59,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-13 16:47:59,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 132 transitions, 668 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-10-13 16:47:59,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:59,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-13 16:47:59,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand