./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-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:39:26,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:39:26,351 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:39:26,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:39:26,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:39:26,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:39:26,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:39:26,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:39:26,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:39:26,395 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:39:26,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:39:26,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:39:26,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:39:26,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:39:26,396 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:39:26,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:39:26,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:39:26,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:39:26,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:39:26,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:39:26,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:39:26,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:39:26,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:39:26,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:39:26,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:39:26,400 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:39:26,400 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:39:26,400 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:39:26,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:39:26,401 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:39:26,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:39:26,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:39:26,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:39:26,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:39:26,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:39:26,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:39:26,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:39:26,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:39:26,403 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:39:26,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:39:26,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:39:26,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:39:26,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:39:26,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:39:26,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-10-24 23:39:26,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:39:26,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:39:26,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:39:26,722 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:39:26,722 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:39:26,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-24 23:39:28,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:39:28,387 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:39:28,388 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-24 23:39:28,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d80cfdcc/9c1dc98137d44c648efba94b505a2e9f/FLAG12970e70e [2024-10-24 23:39:28,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d80cfdcc/9c1dc98137d44c648efba94b505a2e9f [2024-10-24 23:39:28,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:39:28,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:39:28,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:39:28,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:39:28,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:39:28,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bf08f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28, skipping insertion in model container [2024-10-24 23:39:28,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:39:28,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:39:28,708 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:39:28,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:39:28,758 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:39:28,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28 WrapperNode [2024-10-24 23:39:28,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:39:28,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:39:28,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:39:28,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:39:28,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,799 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 177 [2024-10-24 23:39:28,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:39:28,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:39:28,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:39:28,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:39:28,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,837 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-24 23:39:28,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:39:28,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:39:28,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:39:28,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:39:28,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (1/1) ... [2024-10-24 23:39:28,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:39:28,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:28,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:39:28,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:39:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:39:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:39:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:39:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:39:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:39:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:39:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:39:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:39:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:39:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:39:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:39:28,949 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:39:29,113 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:39:29,115 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:39:29,540 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:39:29,541 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:39:29,836 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:39:29,836 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 23:39:29,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:29 BoogieIcfgContainer [2024-10-24 23:39:29,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:39:29,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:39:29,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:39:29,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:39:29,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:39:28" (1/3) ... [2024-10-24 23:39:29,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4baf12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:29, skipping insertion in model container [2024-10-24 23:39:29,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:28" (2/3) ... [2024-10-24 23:39:29,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4baf12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:29, skipping insertion in model container [2024-10-24 23:39:29,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:29" (3/3) ... [2024-10-24 23:39:29,846 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-10-24 23:39:29,866 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:39:29,866 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-24 23:39:29,867 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:39:29,960 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:39:29,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 199 flow [2024-10-24 23:39:30,025 INFO L124 PetriNetUnfolderBase]: 15/86 cut-off events. [2024-10-24 23:39:30,025 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:39:30,029 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 262 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. [2024-10-24 23:39:30,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 199 flow [2024-10-24 23:39:30,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 84 transitions, 183 flow [2024-10-24 23:39:30,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:39:30,051 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;@603fe4b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:39:30,051 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-24 23:39:30,054 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:39:30,054 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:39:30,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:39:30,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:30,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:39:30,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:30,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:30,061 INFO L85 PathProgramCache]: Analyzing trace with hash 803296, now seen corresponding path program 1 times [2024-10-24 23:39:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099371920] [2024-10-24 23:39:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:30,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:30,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099371920] [2024-10-24 23:39:30,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099371920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:30,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:30,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:39:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424987356] [2024-10-24 23:39:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:30,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:30,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-24 23:39:30,396 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) [2024-10-24 23:39:30,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:30,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-24 23:39:30,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:31,176 INFO L124 PetriNetUnfolderBase]: 4000/6613 cut-off events. [2024-10-24 23:39:31,176 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-10-24 23:39:31,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11928 conditions, 6613 events. 4000/6613 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42000 event pairs, 2534 based on Foata normal form. 3/4618 useless extension candidates. Maximal degree in co-relation 11334. Up to 5081 conditions per place. [2024-10-24 23:39:31,253 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 43 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2024-10-24 23:39:31,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 279 flow [2024-10-24 23:39:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-10-24 23:39:31,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224719101123596 [2024-10-24 23:39:31,272 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 183 flow. Second operand 4 states and 186 transitions. [2024-10-24 23:39:31,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 279 flow [2024-10-24 23:39:31,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 270 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:39:31,287 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 184 flow [2024-10-24 23:39:31,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-10-24 23:39:31,294 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2024-10-24 23:39:31,294 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 184 flow [2024-10-24 23:39:31,295 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) [2024-10-24 23:39:31,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:31,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 23:39:31,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:39:31,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:31,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash 24902940, now seen corresponding path program 1 times [2024-10-24 23:39:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672323640] [2024-10-24 23:39:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:31,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:31,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672323640] [2024-10-24 23:39:31,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672323640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:39:31,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038343648] [2024-10-24 23:39:31,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:31,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:31,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:31,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-24 23:39:31,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 184 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) [2024-10-24 23:39:31,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:31,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-24 23:39:31,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:32,100 INFO L124 PetriNetUnfolderBase]: 4003/6625 cut-off events. [2024-10-24 23:39:32,102 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-24 23:39:32,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11881 conditions, 6625 events. 4003/6625 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42108 event pairs, 2534 based on Foata normal form. 3/4634 useless extension candidates. Maximal degree in co-relation 11813. Up to 5094 conditions per place. [2024-10-24 23:39:32,160 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 50 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-10-24 23:39:32,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 90 transitions, 336 flow [2024-10-24 23:39:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-10-24 23:39:32,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547752808988764 [2024-10-24 23:39:32,166 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 184 flow. Second operand 4 states and 195 transitions. [2024-10-24 23:39:32,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 90 transitions, 336 flow [2024-10-24 23:39:32,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 306 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:39:32,173 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 250 flow [2024-10-24 23:39:32,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2024-10-24 23:39:32,174 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-10-24 23:39:32,174 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 250 flow [2024-10-24 23:39:32,175 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) [2024-10-24 23:39:32,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:32,176 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:39:32,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:39:32,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:32,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:32,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1145084438, now seen corresponding path program 1 times [2024-10-24 23:39:32,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:32,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020266020] [2024-10-24 23:39:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:32,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:32,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020266020] [2024-10-24 23:39:32,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020266020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:39:32,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486465973] [2024-10-24 23:39:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:32,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:32,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:39:32,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:39:32,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:39:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:32,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:39:32,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:39:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:32,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:39:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:32,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486465973] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:39:32,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:39:32,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-24 23:39:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110946065] [2024-10-24 23:39:32,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:39:32,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 23:39:32,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:32,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:39:32,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:39:32,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-24 23:39:32,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:32,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:32,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-24 23:39:32,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:33,324 INFO L124 PetriNetUnfolderBase]: 4012/6661 cut-off events. [2024-10-24 23:39:33,325 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-10-24 23:39:33,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11996 conditions, 6661 events. 4012/6661 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 42534 event pairs, 2534 based on Foata normal form. 0/4662 useless extension candidates. Maximal degree in co-relation 11827. Up to 5097 conditions per place. [2024-10-24 23:39:33,376 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 50 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2024-10-24 23:39:33,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 544 flow [2024-10-24 23:39:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:39:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:39:33,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2024-10-24 23:39:33,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4786516853932584 [2024-10-24 23:39:33,380 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 250 flow. Second operand 10 states and 426 transitions. [2024-10-24 23:39:33,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 544 flow [2024-10-24 23:39:33,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 544 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:39:33,384 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 494 flow [2024-10-24 23:39:33,384 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=10, PETRI_FLOW=494, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2024-10-24 23:39:33,385 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2024-10-24 23:39:33,385 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 494 flow [2024-10-24 23:39:33,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:33,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:33,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:33,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 23:39:33,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:39:33,591 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:33,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:33,592 INFO L85 PathProgramCache]: Analyzing trace with hash -687557227, now seen corresponding path program 1 times [2024-10-24 23:39:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:33,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112102975] [2024-10-24 23:39:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:33,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:33,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:33,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112102975] [2024-10-24 23:39:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112102975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:33,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:33,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:33,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467864493] [2024-10-24 23:39:33,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:33,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:33,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:33,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-10-24 23:39:33,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 494 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) [2024-10-24 23:39:33,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:33,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-10-24 23:39:33,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:34,761 INFO L124 PetriNetUnfolderBase]: 7217/10894 cut-off events. [2024-10-24 23:39:34,762 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-10-24 23:39:34,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20679 conditions, 10894 events. 7217/10894 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 63689 event pairs, 3494 based on Foata normal form. 146/7927 useless extension candidates. Maximal degree in co-relation 20584. Up to 6976 conditions per place. [2024-10-24 23:39:34,880 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 139 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2024-10-24 23:39:34,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 173 transitions, 898 flow [2024-10-24 23:39:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-10-24 23:39:34,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7106741573033708 [2024-10-24 23:39:34,883 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 494 flow. Second operand 4 states and 253 transitions. [2024-10-24 23:39:34,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 173 transitions, 898 flow [2024-10-24 23:39:34,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 173 transitions, 803 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-10-24 23:39:34,889 INFO L231 Difference]: Finished difference. Result has 90 places, 120 transitions, 428 flow [2024-10-24 23:39:34,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=85, 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=428, PETRI_PLACES=90, PETRI_TRANSITIONS=120} [2024-10-24 23:39:34,891 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2024-10-24 23:39:34,892 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 120 transitions, 428 flow [2024-10-24 23:39:34,892 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) [2024-10-24 23:39:34,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:34,893 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:34,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:39:34,893 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:34,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash 160595052, now seen corresponding path program 1 times [2024-10-24 23:39:34,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:34,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847155989] [2024-10-24 23:39:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:35,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:35,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847155989] [2024-10-24 23:39:35,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847155989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:35,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:35,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:35,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222499788] [2024-10-24 23:39:35,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:35,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:39:35,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:39:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:39:35,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-24 23:39:35,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 120 transitions, 428 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) [2024-10-24 23:39:35,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:35,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-24 23:39:35,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:37,068 INFO L124 PetriNetUnfolderBase]: 13551/22409 cut-off events. [2024-10-24 23:39:37,069 INFO L125 PetriNetUnfolderBase]: For 2730/2730 co-relation queries the response was YES. [2024-10-24 23:39:37,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42686 conditions, 22409 events. 13551/22409 cut-off events. For 2730/2730 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 170560 event pairs, 8268 based on Foata normal form. 230/16741 useless extension candidates. Maximal degree in co-relation 42578. Up to 8645 conditions per place. [2024-10-24 23:39:37,334 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 133 selfloop transitions, 11 changer transitions 0/176 dead transitions. [2024-10-24 23:39:37,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 176 transitions, 890 flow [2024-10-24 23:39:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:39:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:39:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2024-10-24 23:39:37,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.601123595505618 [2024-10-24 23:39:37,340 INFO L175 Difference]: Start difference. First operand has 90 places, 120 transitions, 428 flow. Second operand 6 states and 321 transitions. [2024-10-24 23:39:37,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 176 transitions, 890 flow [2024-10-24 23:39:37,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 176 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:39:37,353 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 482 flow [2024-10-24 23:39:37,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2024-10-24 23:39:37,357 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-10-24 23:39:37,358 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 482 flow [2024-10-24 23:39:37,358 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) [2024-10-24 23:39:37,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:37,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:37,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:39:37,359 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:37,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1245841916, now seen corresponding path program 1 times [2024-10-24 23:39:37,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:37,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651280748] [2024-10-24 23:39:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:37,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:37,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:37,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651280748] [2024-10-24 23:39:37,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651280748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:37,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:37,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:37,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64874616] [2024-10-24 23:39:37,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:37,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:37,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:37,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-10-24 23:39:37,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 482 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) [2024-10-24 23:39:37,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:37,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-10-24 23:39:37,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:39,715 INFO L124 PetriNetUnfolderBase]: 22204/33004 cut-off events. [2024-10-24 23:39:39,715 INFO L125 PetriNetUnfolderBase]: For 4059/4419 co-relation queries the response was YES. [2024-10-24 23:39:39,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66381 conditions, 33004 events. 22204/33004 cut-off events. For 4059/4419 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 216692 event pairs, 10634 based on Foata normal form. 448/25807 useless extension candidates. Maximal degree in co-relation 66268. Up to 21124 conditions per place. [2024-10-24 23:39:40,032 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 145 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2024-10-24 23:39:40,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 181 transitions, 926 flow [2024-10-24 23:39:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:39:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:39:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-24 23:39:40,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7050561797752809 [2024-10-24 23:39:40,034 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 482 flow. Second operand 4 states and 251 transitions. [2024-10-24 23:39:40,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 181 transitions, 926 flow [2024-10-24 23:39:40,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 181 transitions, 923 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:39:40,046 INFO L231 Difference]: Finished difference. Result has 101 places, 126 transitions, 508 flow [2024-10-24 23:39:40,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=508, PETRI_PLACES=101, PETRI_TRANSITIONS=126} [2024-10-24 23:39:40,048 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2024-10-24 23:39:40,049 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 126 transitions, 508 flow [2024-10-24 23:39:40,049 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) [2024-10-24 23:39:40,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:40,050 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:40,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:39:40,050 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:40,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:40,051 INFO L85 PathProgramCache]: Analyzing trace with hash 683480183, now seen corresponding path program 1 times [2024-10-24 23:39:40,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:40,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75149650] [2024-10-24 23:39:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:40,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:40,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75149650] [2024-10-24 23:39:40,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75149650] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:40,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:40,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:39:40,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43535158] [2024-10-24 23:39:40,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:40,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:40,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:40,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:40,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:40,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-24 23:39:40,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 126 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:40,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:40,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-24 23:39:40,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:44,817 INFO L124 PetriNetUnfolderBase]: 39672/66276 cut-off events. [2024-10-24 23:39:44,817 INFO L125 PetriNetUnfolderBase]: For 18572/18644 co-relation queries the response was YES. [2024-10-24 23:39:45,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135310 conditions, 66276 events. 39672/66276 cut-off events. For 18572/18644 co-relation queries the response was YES. Maximal size of possible extension queue 2549. Compared 580345 event pairs, 24248 based on Foata normal form. 656/54034 useless extension candidates. Maximal degree in co-relation 135122. Up to 24784 conditions per place. [2024-10-24 23:39:45,458 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 162 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2024-10-24 23:39:45,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 202 transitions, 1145 flow [2024-10-24 23:39:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:39:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:39:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-10-24 23:39:45,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.651685393258427 [2024-10-24 23:39:45,460 INFO L175 Difference]: Start difference. First operand has 101 places, 126 transitions, 508 flow. Second operand 5 states and 290 transitions. [2024-10-24 23:39:45,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 202 transitions, 1145 flow [2024-10-24 23:39:45,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 202 transitions, 1140 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:39:45,505 INFO L231 Difference]: Finished difference. Result has 107 places, 130 transitions, 574 flow [2024-10-24 23:39:45,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=107, PETRI_TRANSITIONS=130} [2024-10-24 23:39:45,507 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2024-10-24 23:39:45,507 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 130 transitions, 574 flow [2024-10-24 23:39:45,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:45,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:45,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:45,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:39:45,508 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:45,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash 33638896, now seen corresponding path program 1 times [2024-10-24 23:39:45,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:45,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492852119] [2024-10-24 23:39:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:45,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:45,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492852119] [2024-10-24 23:39:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492852119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:45,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:45,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:45,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899173015] [2024-10-24 23:39:45,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:45,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:39:45,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:39:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:39:45,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-24 23:39:45,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 130 transitions, 574 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) [2024-10-24 23:39:45,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:45,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-24 23:39:45,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:55,253 INFO L124 PetriNetUnfolderBase]: 82740/136532 cut-off events. [2024-10-24 23:39:55,253 INFO L125 PetriNetUnfolderBase]: For 25573/25717 co-relation queries the response was YES. [2024-10-24 23:39:56,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273003 conditions, 136532 events. 82740/136532 cut-off events. For 25573/25717 co-relation queries the response was YES. Maximal size of possible extension queue 5039. Compared 1281776 event pairs, 50552 based on Foata normal form. 920/108362 useless extension candidates. Maximal degree in co-relation 272813. Up to 52400 conditions per place. [2024-10-24 23:39:56,811 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 125 selfloop transitions, 13 changer transitions 0/173 dead transitions. [2024-10-24 23:39:56,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 173 transitions, 966 flow [2024-10-24 23:39:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:39:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:39:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 278 transitions. [2024-10-24 23:39:56,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6247191011235955 [2024-10-24 23:39:56,819 INFO L175 Difference]: Start difference. First operand has 107 places, 130 transitions, 574 flow. Second operand 5 states and 278 transitions. [2024-10-24 23:39:56,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 173 transitions, 966 flow [2024-10-24 23:39:56,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 173 transitions, 964 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 23:39:56,893 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 618 flow [2024-10-24 23:39:56,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=113, PETRI_TRANSITIONS=131} [2024-10-24 23:39:56,894 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2024-10-24 23:39:56,894 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 618 flow [2024-10-24 23:39:56,895 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) [2024-10-24 23:39:56,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:56,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:56,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:39:56,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:39:56,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1042806662, now seen corresponding path program 1 times [2024-10-24 23:39:56,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:56,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563904025] [2024-10-24 23:39:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:56,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563904025] [2024-10-24 23:39:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563904025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:57,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:57,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:57,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568309070] [2024-10-24 23:39:57,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:57,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:39:57,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:57,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:39:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:39:57,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-24 23:39:57,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 131 transitions, 618 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) [2024-10-24 23:39:57,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:57,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-24 23:39:57,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:40:06,647 INFO L124 PetriNetUnfolderBase]: 80092/132544 cut-off events. [2024-10-24 23:40:06,647 INFO L125 PetriNetUnfolderBase]: For 33612/33828 co-relation queries the response was YES. [2024-10-24 23:40:07,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269778 conditions, 132544 events. 80092/132544 cut-off events. For 33612/33828 co-relation queries the response was YES. Maximal size of possible extension queue 4881. Compared 1242285 event pairs, 48548 based on Foata normal form. 560/106872 useless extension candidates. Maximal degree in co-relation 269581. Up to 49475 conditions per place. [2024-10-24 23:40:07,908 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 164 selfloop transitions, 30 changer transitions 0/229 dead transitions. [2024-10-24 23:40:07,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 229 transitions, 1358 flow [2024-10-24 23:40:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:40:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:40:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 423 transitions. [2024-10-24 23:40:07,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5941011235955056 [2024-10-24 23:40:07,910 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 618 flow. Second operand 8 states and 423 transitions. [2024-10-24 23:40:07,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 229 transitions, 1358 flow [2024-10-24 23:40:08,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 229 transitions, 1333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:40:08,003 INFO L231 Difference]: Finished difference. Result has 123 places, 155 transitions, 906 flow [2024-10-24 23:40:08,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=906, PETRI_PLACES=123, PETRI_TRANSITIONS=155} [2024-10-24 23:40:08,004 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 44 predicate places. [2024-10-24 23:40:08,004 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 155 transitions, 906 flow [2024-10-24 23:40:08,005 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) [2024-10-24 23:40:08,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:40:08,005 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:40:08,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:40:08,005 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-24 23:40:08,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:40:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1451039184, now seen corresponding path program 1 times [2024-10-24 23:40:08,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:40:08,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867310020] [2024-10-24 23:40:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:40:08,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:40:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:40:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:40:08,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:40:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867310020] [2024-10-24 23:40:08,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867310020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:40:08,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:40:08,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:40:08,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305535605] [2024-10-24 23:40:08,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:40:08,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:40:08,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:40:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:40:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:40:08,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-10-24 23:40:08,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 155 transitions, 906 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:40:08,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:40:08,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-10-24 23:40:08,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand