./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-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-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 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:59:01,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:59:01,914 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:59:01,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:59:01,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:59:01,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:59:01,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:59:01,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:59:01,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:59:01,966 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:59:01,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:59:01,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:59:01,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:59:01,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:59:01,968 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:59:01,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:59:01,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:59:01,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:59:01,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:59:01,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:59:01,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:59:01,974 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:59:01,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:59:01,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:59:01,975 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:59:01,975 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:59:01,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:59:01,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:59:01,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:59:01,976 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:59:01,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:59:01,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:59:01,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:59:01,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:59:01,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:59:01,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:59:01,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:59:01,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:59:01,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:59:01,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:59:01,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:59:01,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:59:01,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:59:01,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:59:01,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2024-10-14 23:59:02,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:59:02,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:59:02,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:59:02,272 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:59:02,273 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:59:02,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2024-10-14 23:59:03,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:59:04,039 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:59:04,041 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2024-10-14 23:59:04,055 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562673e3b/9bd4fa313ded4482883a66ecb0306597/FLAG81fbc369f [2024-10-14 23:59:04,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/562673e3b/9bd4fa313ded4482883a66ecb0306597 [2024-10-14 23:59:04,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:59:04,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:59:04,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:59:04,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:59:04,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:59:04,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a80757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04, skipping insertion in model container [2024-10-14 23:59:04,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,118 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:59:04,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:59:04,339 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:59:04,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:59:04,412 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:59:04,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04 WrapperNode [2024-10-14 23:59:04,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:59:04,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:59:04,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:59:04,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:59:04,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,483 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 356 [2024-10-14 23:59:04,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:59:04,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:59:04,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:59:04,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:59:04,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,548 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 23:59:04,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:59:04,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:59:04,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:59:04,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:59:04,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (1/1) ... [2024-10-14 23:59:04,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:59:04,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:59:04,637 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) [2024-10-14 23:59:04,640 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 [2024-10-14 23:59:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:59:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 23:59:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 23:59:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 23:59:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 23:59:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 23:59:04,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 23:59:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:59:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:59:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:59:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:59:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 23:59:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:59:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:59:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:59:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:59:04,692 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:59:04,801 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:59:04,804 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:59:05,423 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:59:05,424 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:59:05,807 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:59:05,809 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 23:59:05,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:05 BoogieIcfgContainer [2024-10-14 23:59:05,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:59:05,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:59:05,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:59:05,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:59:05,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:59:04" (1/3) ... [2024-10-14 23:59:05,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ad6928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:05, skipping insertion in model container [2024-10-14 23:59:05,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:04" (2/3) ... [2024-10-14 23:59:05,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ad6928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:05, skipping insertion in model container [2024-10-14 23:59:05,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:05" (3/3) ... [2024-10-14 23:59:05,821 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2024-10-14 23:59:05,841 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:59:05,842 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-10-14 23:59:05,842 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:59:05,931 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 23:59:05,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 113 transitions, 247 flow [2024-10-14 23:59:06,050 INFO L124 PetriNetUnfolderBase]: 16/110 cut-off events. [2024-10-14 23:59:06,050 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 23:59:06,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 110 events. 16/110 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 437 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-10-14 23:59:06,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 113 transitions, 247 flow [2024-10-14 23:59:06,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 108 transitions, 231 flow [2024-10-14 23:59:06,090 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:59:06,097 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;@755fd647, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:59:06,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-10-14 23:59:06,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:59:06,103 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-14 23:59:06,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:59:06,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:06,104 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 23:59:06,105 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:06,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1010455, now seen corresponding path program 1 times [2024-10-14 23:59:06,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:06,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770845849] [2024-10-14 23:59:06,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:06,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770845849] [2024-10-14 23:59:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770845849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:06,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:59:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395429668] [2024-10-14 23:59:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:06,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:06,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:06,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:06,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:59:06,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:59:06,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:06,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:59:06,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:08,892 INFO L124 PetriNetUnfolderBase]: 12357/23532 cut-off events. [2024-10-14 23:59:08,893 INFO L125 PetriNetUnfolderBase]: For 537/537 co-relation queries the response was YES. [2024-10-14 23:59:08,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40272 conditions, 23532 events. 12357/23532 cut-off events. For 537/537 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213241 event pairs, 8540 based on Foata normal form. 1/18431 useless extension candidates. Maximal degree in co-relation 38950. Up to 16288 conditions per place. [2024-10-14 23:59:09,099 INFO L140 encePairwiseOnDemand]: 105/113 looper letters, 51 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-10-14 23:59:09,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 333 flow [2024-10-14 23:59:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-10-14 23:59:09,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907079646017699 [2024-10-14 23:59:09,114 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 231 flow. Second operand 4 states and 267 transitions. [2024-10-14 23:59:09,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 333 flow [2024-10-14 23:59:09,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 23:59:09,125 INFO L231 Difference]: Finished difference. Result has 99 places, 104 transitions, 222 flow [2024-10-14 23:59:09,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=104} [2024-10-14 23:59:09,131 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -3 predicate places. [2024-10-14 23:59:09,131 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 104 transitions, 222 flow [2024-10-14 23:59:09,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:59:09,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:09,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 23:59:09,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:59:09,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:09,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash 31325149, now seen corresponding path program 1 times [2024-10-14 23:59:09,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:09,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116097396] [2024-10-14 23:59:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:09,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:09,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116097396] [2024-10-14 23:59:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116097396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:09,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:09,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:59:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856497135] [2024-10-14 23:59:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:09,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:09,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:09,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:09,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:59:09,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 104 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:59:09,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:09,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:59:09,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:11,347 INFO L124 PetriNetUnfolderBase]: 12358/23536 cut-off events. [2024-10-14 23:59:11,347 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-10-14 23:59:11,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40126 conditions, 23536 events. 12358/23536 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213194 event pairs, 8540 based on Foata normal form. 1/18435 useless extension candidates. Maximal degree in co-relation 40098. Up to 16293 conditions per place. [2024-10-14 23:59:11,498 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 54 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2024-10-14 23:59:11,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 350 flow [2024-10-14 23:59:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-10-14 23:59:11,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907079646017699 [2024-10-14 23:59:11,501 INFO L175 Difference]: Start difference. First operand has 99 places, 104 transitions, 222 flow. Second operand 4 states and 267 transitions. [2024-10-14 23:59:11,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 350 flow [2024-10-14 23:59:11,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:59:11,506 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 241 flow [2024-10-14 23:59:11,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-10-14 23:59:11,507 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -1 predicate places. [2024-10-14 23:59:11,508 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 241 flow [2024-10-14 23:59:11,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:59:11,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:11,508 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-14 23:59:11,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:59:11,509 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:11,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1200697911, now seen corresponding path program 1 times [2024-10-14 23:59:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:11,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162458335] [2024-10-14 23:59:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:11,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:11,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162458335] [2024-10-14 23:59:11,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162458335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:59:11,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865280145] [2024-10-14 23:59:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:11,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:59:11,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:59:11,656 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) [2024-10-14 23:59:11,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:59:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:11,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:59:11,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:59:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:11,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:59:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:11,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865280145] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:59:11,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:59:11,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-14 23:59:11,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247847779] [2024-10-14 23:59:11,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:59:11,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:59:11,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:11,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:59:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:59:11,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:59:11,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 241 flow. Second operand has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 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) [2024-10-14 23:59:11,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:11,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:59:11,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:13,846 INFO L124 PetriNetUnfolderBase]: 12361/23548 cut-off events. [2024-10-14 23:59:13,846 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-10-14 23:59:13,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40162 conditions, 23548 events. 12361/23548 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213401 event pairs, 8540 based on Foata normal form. 0/18443 useless extension candidates. Maximal degree in co-relation 40105. Up to 16296 conditions per place. [2024-10-14 23:59:14,003 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 54 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2024-10-14 23:59:14,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 411 flow [2024-10-14 23:59:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:59:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:59:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2024-10-14 23:59:14,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5221238938053098 [2024-10-14 23:59:14,006 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 241 flow. Second operand 10 states and 590 transitions. [2024-10-14 23:59:14,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 411 flow [2024-10-14 23:59:14,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 116 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:59:14,013 INFO L231 Difference]: Finished difference. Result has 112 places, 116 transitions, 318 flow [2024-10-14 23:59:14,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=318, PETRI_PLACES=112, PETRI_TRANSITIONS=116} [2024-10-14 23:59:14,014 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2024-10-14 23:59:14,015 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 116 transitions, 318 flow [2024-10-14 23:59:14,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 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) [2024-10-14 23:59:14,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:14,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:14,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 23:59:14,216 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 [2024-10-14 23:59:14,217 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:14,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1353861537, now seen corresponding path program 1 times [2024-10-14 23:59:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564890704] [2024-10-14 23:59:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:14,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:14,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564890704] [2024-10-14 23:59:14,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564890704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:14,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:14,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:59:14,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940160492] [2024-10-14 23:59:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:14,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:14,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:14,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:59:14,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 116 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:59:14,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:14,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:59:14,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:17,766 INFO L124 PetriNetUnfolderBase]: 26973/48903 cut-off events. [2024-10-14 23:59:17,767 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-10-14 23:59:17,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85207 conditions, 48903 events. 26973/48903 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2161. Compared 466114 event pairs, 11145 based on Foata normal form. 366/39751 useless extension candidates. Maximal degree in co-relation 85171. Up to 20231 conditions per place. [2024-10-14 23:59:18,096 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 146 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2024-10-14 23:59:18,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 197 transitions, 786 flow [2024-10-14 23:59:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2024-10-14 23:59:18,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7676991150442478 [2024-10-14 23:59:18,099 INFO L175 Difference]: Start difference. First operand has 112 places, 116 transitions, 318 flow. Second operand 4 states and 347 transitions. [2024-10-14 23:59:18,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 197 transitions, 786 flow [2024-10-14 23:59:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 197 transitions, 756 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 23:59:18,104 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 310 flow [2024-10-14 23:59:18,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2024-10-14 23:59:18,105 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2024-10-14 23:59:18,106 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 310 flow [2024-10-14 23:59:18,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:59:18,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:18,107 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:18,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:59:18,107 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:18,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1827894053, now seen corresponding path program 1 times [2024-10-14 23:59:18,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:18,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120214380] [2024-10-14 23:59:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:18,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:18,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:18,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120214380] [2024-10-14 23:59:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120214380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:18,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:18,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:59:18,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75705992] [2024-10-14 23:59:18,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:18,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:18,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:18,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:59:18,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-10-14 23:59:18,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:18,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:59:18,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:24,301 INFO L124 PetriNetUnfolderBase]: 51877/90743 cut-off events. [2024-10-14 23:59:24,301 INFO L125 PetriNetUnfolderBase]: For 6288/7468 co-relation queries the response was YES. [2024-10-14 23:59:24,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164816 conditions, 90743 events. 51877/90743 cut-off events. For 6288/7468 co-relation queries the response was YES. Maximal size of possible extension queue 3617. Compared 899849 event pairs, 21438 based on Foata normal form. 726/75185 useless extension candidates. Maximal degree in co-relation 164782. Up to 38015 conditions per place. [2024-10-14 23:59:24,888 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 149 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2024-10-14 23:59:24,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 813 flow [2024-10-14 23:59:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:59:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:59:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2024-10-14 23:59:24,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2024-10-14 23:59:24,890 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 310 flow. Second operand 4 states and 344 transitions. [2024-10-14 23:59:24,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 813 flow [2024-10-14 23:59:24,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 200 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:59:24,900 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 330 flow [2024-10-14 23:59:24,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2024-10-14 23:59:24,901 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2024-10-14 23:59:24,901 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 330 flow [2024-10-14 23:59:24,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-10-14 23:59:24,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:24,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:24,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:59:24,902 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:24,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1148829827, now seen corresponding path program 1 times [2024-10-14 23:59:24,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:24,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63632582] [2024-10-14 23:59:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:24,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:59:24,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:24,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63632582] [2024-10-14 23:59:24,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63632582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:24,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:24,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:59:24,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695611973] [2024-10-14 23:59:24,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:24,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:59:24,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:59:24,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:59:24,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2024-10-14 23:59:24,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2024-10-14 23:59:24,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:24,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2024-10-14 23:59:24,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:30,366 INFO L124 PetriNetUnfolderBase]: 43219/73911 cut-off events. [2024-10-14 23:59:30,366 INFO L125 PetriNetUnfolderBase]: For 8743/10183 co-relation queries the response was YES. [2024-10-14 23:59:30,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141257 conditions, 73911 events. 43219/73911 cut-off events. For 8743/10183 co-relation queries the response was YES. Maximal size of possible extension queue 2705. Compared 688649 event pairs, 16970 based on Foata normal form. 0/63153 useless extension candidates. Maximal degree in co-relation 141221. Up to 32265 conditions per place. [2024-10-14 23:59:30,807 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 181 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2024-10-14 23:59:30,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 235 transitions, 985 flow [2024-10-14 23:59:30,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:59:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:59:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2024-10-14 23:59:30,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7716814159292036 [2024-10-14 23:59:30,809 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 330 flow. Second operand 5 states and 436 transitions. [2024-10-14 23:59:30,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 235 transitions, 985 flow [2024-10-14 23:59:30,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 235 transitions, 977 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:59:30,847 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 353 flow [2024-10-14 23:59:30,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2024-10-14 23:59:30,848 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 22 predicate places. [2024-10-14 23:59:30,848 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 353 flow [2024-10-14 23:59:30,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2024-10-14 23:59:30,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:30,848 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:30,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 23:59:30,849 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:30,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:30,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1219616327, now seen corresponding path program 1 times [2024-10-14 23:59:30,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438177392] [2024-10-14 23:59:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:59:30,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:30,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438177392] [2024-10-14 23:59:30,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438177392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:30,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:30,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:59:30,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867216186] [2024-10-14 23:59:30,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:30,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:59:30,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:30,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:59:30,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:59:30,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2024-10-14 23:59:30,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-10-14 23:59:30,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:30,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2024-10-14 23:59:30,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:36,020 INFO L124 PetriNetUnfolderBase]: 40006/75809 cut-off events. [2024-10-14 23:59:36,020 INFO L125 PetriNetUnfolderBase]: For 17565/18785 co-relation queries the response was YES. [2024-10-14 23:59:36,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144034 conditions, 75809 events. 40006/75809 cut-off events. For 17565/18785 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 786718 event pairs, 29551 based on Foata normal form. 1/62708 useless extension candidates. Maximal degree in co-relation 144000. Up to 53445 conditions per place. [2024-10-14 23:59:36,568 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 69 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-10-14 23:59:36,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 491 flow [2024-10-14 23:59:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:59:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:59:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2024-10-14 23:59:36,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6460176991150443 [2024-10-14 23:59:36,570 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 353 flow. Second operand 3 states and 219 transitions. [2024-10-14 23:59:36,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 121 transitions, 491 flow [2024-10-14 23:59:36,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:59:36,598 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 353 flow [2024-10-14 23:59:36,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2024-10-14 23:59:36,599 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 24 predicate places. [2024-10-14 23:59:36,599 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 353 flow [2024-10-14 23:59:36,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-10-14 23:59:36,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:36,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:59:36,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:59:36,600 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:36,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash 920384031, now seen corresponding path program 1 times [2024-10-14 23:59:36,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:36,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113079252] [2024-10-14 23:59:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:36,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:59:36,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113079252] [2024-10-14 23:59:36,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113079252] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:59:36,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713530035] [2024-10-14 23:59:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:36,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:59:36,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:59:36,685 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) [2024-10-14 23:59:36,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:59:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:36,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 23:59:36,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:59:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:59:36,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:59:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 23:59:36,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713530035] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:59:36,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:59:36,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-14 23:59:36,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485324549] [2024-10-14 23:59:36,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:59:36,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 23:59:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 23:59:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 23:59:36,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-10-14 23:59:36,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 353 flow. Second operand has 10 states, 10 states have (on average 53.7) internal successors, (537), 10 states have internal predecessors, (537), 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) [2024-10-14 23:59:36,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:36,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-10-14 23:59:36,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:59:42,488 INFO L124 PetriNetUnfolderBase]: 40004/75807 cut-off events. [2024-10-14 23:59:42,489 INFO L125 PetriNetUnfolderBase]: For 17571/18791 co-relation queries the response was YES. [2024-10-14 23:59:43,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144032 conditions, 75807 events. 40004/75807 cut-off events. For 17571/18791 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 786707 event pairs, 29551 based on Foata normal form. 2/62707 useless extension candidates. Maximal degree in co-relation 144004. Up to 53437 conditions per place. [2024-10-14 23:59:43,330 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 60 selfloop transitions, 10 changer transitions 0/119 dead transitions. [2024-10-14 23:59:43,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 119 transitions, 485 flow [2024-10-14 23:59:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:59:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:59:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 426 transitions. [2024-10-14 23:59:43,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.538558786346397 [2024-10-14 23:59:43,332 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 353 flow. Second operand 7 states and 426 transitions. [2024-10-14 23:59:43,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 119 transitions, 485 flow [2024-10-14 23:59:43,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 119 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:59:43,351 INFO L231 Difference]: Finished difference. Result has 130 places, 119 transitions, 361 flow [2024-10-14 23:59:43,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=130, PETRI_TRANSITIONS=119} [2024-10-14 23:59:43,352 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 28 predicate places. [2024-10-14 23:59:43,352 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 119 transitions, 361 flow [2024-10-14 23:59:43,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.7) internal successors, (537), 10 states have internal predecessors, (537), 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) [2024-10-14 23:59:43,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:59:43,353 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-14 23:59:43,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 23:59:43,553 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,SelfDestructingSolverStorable7 [2024-10-14 23:59:43,554 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-14 23:59:43,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:59:43,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1240596317, now seen corresponding path program 2 times [2024-10-14 23:59:43,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:59:43,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913840227] [2024-10-14 23:59:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:59:43,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:59:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:59:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 23:59:43,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:59:43,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913840227] [2024-10-14 23:59:43,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913840227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:59:43,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:59:43,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 23:59:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734040852] [2024-10-14 23:59:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:59:43,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 23:59:43,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:59:43,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 23:59:43,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 23:59:43,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2024-10-14 23:59:43,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 119 transitions, 361 flow. Second operand has 9 states, 9 states have (on average 55.111111111111114) internal successors, (496), 9 states have internal predecessors, (496), 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) [2024-10-14 23:59:43,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:59:43,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2024-10-14 23:59:43,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand