./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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/goblint-regression/28-race_reach_71-funloop_racing.i -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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:56:23,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:56:23,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 21:56:23,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:56:23,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:56:23,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:56:23,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:56:23,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:56:23,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:56:23,436 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:56:23,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:56:23,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:56:23,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:56:23,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:56:23,437 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:56:23,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:56:23,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:56:23,440 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 21:56:23,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:56:23,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 21:56:23,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:56:23,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:56:23,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:56:23,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:56:23,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:56:23,441 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:56:23,442 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:56:23,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 21:56:23,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:56:23,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:56:23,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:56:23,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:56:23,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:56:23,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:56:23,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:56:23,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:56:23,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:56:23,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:56:23,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:56:23,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:56:23,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:56:23,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:56:23,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:56:23,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:56:23,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-20 21:56:23,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:56:23,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:56:23,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:56:23,654 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:56:23,654 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:56:23,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-20 21:56:24,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:56:25,071 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:56:25,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-20 21:56:25,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ddfc5778/218926697bf6495e8548396a73d1bccc/FLAG811c58c13 [2024-11-20 21:56:25,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ddfc5778/218926697bf6495e8548396a73d1bccc [2024-11-20 21:56:25,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:56:25,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:56:25,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:56:25,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:56:25,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:56:25,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:25,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162f2f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25, skipping insertion in model container [2024-11-20 21:56:25,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:25,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:56:25,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:56:25,801 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:56:25,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:56:25,909 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:56:25,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25 WrapperNode [2024-11-20 21:56:25,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:56:25,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:56:25,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:56:25,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:56:25,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:25,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:25,975 INFO L138 Inliner]: procedures = 272, calls = 108, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 366 [2024-11-20 21:56:25,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:56:25,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:56:25,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:56:25,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:56:25,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:25,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:25,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:26,011 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 2, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 7 writes are split as follows [0, 0, 1, 6]. [2024-11-20 21:56:26,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:26,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:26,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:26,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:26,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:26,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:26,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:56:26,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:56:26,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:56:26,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:56:26,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (1/1) ... [2024-11-20 21:56:26,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:56:26,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:26,100 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) [2024-11-20 21:56:26,121 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 [2024-11-20 21:56:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 21:56:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 21:56:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 21:56:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 21:56:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 21:56:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 21:56:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 21:56:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 21:56:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 21:56:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 21:56:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 21:56:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 21:56:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:56:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 21:56:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 21:56:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:56:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 21:56:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 21:56:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 21:56:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:56:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:56:26,166 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 21:56:26,287 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:56:26,289 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:56:26,672 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 21:56:26,672 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:56:27,024 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:56:27,024 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-20 21:56:27,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:56:27 BoogieIcfgContainer [2024-11-20 21:56:27,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:56:27,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:56:27,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:56:27,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:56:27,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:56:25" (1/3) ... [2024-11-20 21:56:27,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bd14e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:56:27, skipping insertion in model container [2024-11-20 21:56:27,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:25" (2/3) ... [2024-11-20 21:56:27,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bd14e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:56:27, skipping insertion in model container [2024-11-20 21:56:27,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:56:27" (3/3) ... [2024-11-20 21:56:27,032 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-20 21:56:27,044 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:56:27,045 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-20 21:56:27,045 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 21:56:27,093 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 21:56:27,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 163 transitions, 333 flow [2024-11-20 21:56:27,181 INFO L124 PetriNetUnfolderBase]: 60/256 cut-off events. [2024-11-20 21:56:27,181 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 21:56:27,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 256 events. 60/256 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1281 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2024-11-20 21:56:27,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 163 transitions, 333 flow [2024-11-20 21:56:27,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 162 transitions, 331 flow [2024-11-20 21:56:27,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:56:27,202 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;@79223a06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:56:27,202 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-20 21:56:27,209 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:56:27,209 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 21:56:27,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:56:27,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:27,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 21:56:27,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 21:56:27,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:27,214 INFO L85 PathProgramCache]: Analyzing trace with hash 929875, now seen corresponding path program 1 times [2024-11-20 21:56:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:27,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115872230] [2024-11-20 21:56:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:27,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:27,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115872230] [2024-11-20 21:56:27,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115872230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:27,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:27,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557953990] [2024-11-20 21:56:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:27,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:27,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:27,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:27,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:27,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-20 21:56:27,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 162 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2024-11-20 21:56:27,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:27,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-20 21:56:27,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:27,939 INFO L124 PetriNetUnfolderBase]: 920/2872 cut-off events. [2024-11-20 21:56:27,939 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 21:56:27,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4611 conditions, 2872 events. 920/2872 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23437 event pairs, 760 based on Foata normal form. 512/2965 useless extension candidates. Maximal degree in co-relation 4474. Up to 1730 conditions per place. [2024-11-20 21:56:27,963 INFO L140 encePairwiseOnDemand]: 128/163 looper letters, 63 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-20 21:56:27,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 131 transitions, 403 flow [2024-11-20 21:56:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2024-11-20 21:56:27,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5429447852760736 [2024-11-20 21:56:27,978 INFO L175 Difference]: Start difference. First operand has 129 places, 162 transitions, 331 flow. Second operand 4 states and 354 transitions. [2024-11-20 21:56:27,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 131 transitions, 403 flow [2024-11-20 21:56:27,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 131 transitions, 403 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:56:27,984 INFO L231 Difference]: Finished difference. Result has 131 places, 131 transitions, 277 flow [2024-11-20 21:56:27,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=131, PETRI_TRANSITIONS=131} [2024-11-20 21:56:27,990 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 2 predicate places. [2024-11-20 21:56:27,991 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 131 transitions, 277 flow [2024-11-20 21:56:27,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2024-11-20 21:56:27,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:27,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 21:56:27,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:56:27,992 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 21:56:27,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 28827129, now seen corresponding path program 1 times [2024-11-20 21:56:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:27,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200731228] [2024-11-20 21:56:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:27,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200731228] [2024-11-20 21:56:28,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200731228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:28,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:28,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:28,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256886320] [2024-11-20 21:56:28,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:28,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:28,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:28,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:28,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-20 21:56:28,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 131 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2024-11-20 21:56:28,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:28,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-20 21:56:28,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:28,331 INFO L124 PetriNetUnfolderBase]: 920/2875 cut-off events. [2024-11-20 21:56:28,331 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 21:56:28,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 2875 events. 920/2875 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23466 event pairs, 760 based on Foata normal form. 1/2458 useless extension candidates. Maximal degree in co-relation 4597. Up to 1734 conditions per place. [2024-11-20 21:56:28,343 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 66 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-20 21:56:28,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 423 flow [2024-11-20 21:56:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:28,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-11-20 21:56:28,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5015337423312883 [2024-11-20 21:56:28,346 INFO L175 Difference]: Start difference. First operand has 131 places, 131 transitions, 277 flow. Second operand 4 states and 327 transitions. [2024-11-20 21:56:28,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 423 flow [2024-11-20 21:56:28,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:56:28,351 INFO L231 Difference]: Finished difference. Result has 133 places, 133 transitions, 291 flow [2024-11-20 21:56:28,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=133, PETRI_TRANSITIONS=133} [2024-11-20 21:56:28,352 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2024-11-20 21:56:28,352 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 133 transitions, 291 flow [2024-11-20 21:56:28,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2024-11-20 21:56:28,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:28,353 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-20 21:56:28,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 21:56:28,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 21:56:28,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:28,354 INFO L85 PathProgramCache]: Analyzing trace with hash -203516408, now seen corresponding path program 1 times [2024-11-20 21:56:28,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:28,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452582116] [2024-11-20 21:56:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:28,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:56:28,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452582116] [2024-11-20 21:56:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452582116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:28,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:28,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13272128] [2024-11-20 21:56:28,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:28,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 21:56:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 21:56:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 21:56:28,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-20 21:56:28,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 133 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2024-11-20 21:56:28,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:28,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-20 21:56:28,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:28,648 INFO L124 PetriNetUnfolderBase]: 920/2874 cut-off events. [2024-11-20 21:56:28,648 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 21:56:28,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 2874 events. 920/2874 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23401 event pairs, 760 based on Foata normal form. 0/2456 useless extension candidates. Maximal degree in co-relation 4607. Up to 1733 conditions per place. [2024-11-20 21:56:28,659 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 64 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-11-20 21:56:28,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 423 flow [2024-11-20 21:56:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 21:56:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 21:56:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-11-20 21:56:28,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296523517382413 [2024-11-20 21:56:28,660 INFO L175 Difference]: Start difference. First operand has 133 places, 133 transitions, 291 flow. Second operand 3 states and 259 transitions. [2024-11-20 21:56:28,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 423 flow [2024-11-20 21:56:28,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:56:28,662 INFO L231 Difference]: Finished difference. Result has 133 places, 132 transitions, 293 flow [2024-11-20 21:56:28,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=133, PETRI_TRANSITIONS=132} [2024-11-20 21:56:28,663 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2024-11-20 21:56:28,663 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 132 transitions, 293 flow [2024-11-20 21:56:28,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2024-11-20 21:56:28,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:28,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:28,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 21:56:28,664 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 21:56:28,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1988465455, now seen corresponding path program 1 times [2024-11-20 21:56:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:28,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509607830] [2024-11-20 21:56:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:28,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:56:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509607830] [2024-11-20 21:56:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509607830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:28,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:56:28,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641467754] [2024-11-20 21:56:28,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:28,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:28,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 163 [2024-11-20 21:56:28,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 132 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2024-11-20 21:56:28,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:28,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 163 [2024-11-20 21:56:28,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:29,085 INFO L124 PetriNetUnfolderBase]: 886/2493 cut-off events. [2024-11-20 21:56:29,086 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-20 21:56:29,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 2493 events. 886/2493 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 19341 event pairs, 0 based on Foata normal form. 21/2215 useless extension candidates. Maximal degree in co-relation 4179. Up to 1624 conditions per place. [2024-11-20 21:56:29,094 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 109 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2024-11-20 21:56:29,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 173 transitions, 599 flow [2024-11-20 21:56:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2024-11-20 21:56:29,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5598159509202454 [2024-11-20 21:56:29,096 INFO L175 Difference]: Start difference. First operand has 133 places, 132 transitions, 293 flow. Second operand 4 states and 365 transitions. [2024-11-20 21:56:29,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 173 transitions, 599 flow [2024-11-20 21:56:29,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 173 transitions, 591 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 21:56:29,101 INFO L231 Difference]: Finished difference. Result has 133 places, 130 transitions, 291 flow [2024-11-20 21:56:29,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=133, PETRI_TRANSITIONS=130} [2024-11-20 21:56:29,103 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2024-11-20 21:56:29,103 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 130 transitions, 291 flow [2024-11-20 21:56:29,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2024-11-20 21:56:29,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:29,103 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:29,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 21:56:29,103 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 21:56:29,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2108502914, now seen corresponding path program 1 times [2024-11-20 21:56:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:29,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957358707] [2024-11-20 21:56:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:29,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:29,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957358707] [2024-11-20 21:56:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957358707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:56:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313769397] [2024-11-20 21:56:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:29,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:29,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:29,172 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) [2024-11-20 21:56:29,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 21:56:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:29,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 21:56:29,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:56:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:29,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:56:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313769397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:56:29,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:56:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-20 21:56:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944107514] [2024-11-20 21:56:29,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:56:29,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 21:56:29,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 21:56:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:56:29,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-20 21:56:29,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 130 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 65.375) internal successors, (523), 8 states have internal predecessors, (523), 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) [2024-11-20 21:56:29,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:29,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-20 21:56:29,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:29,631 INFO L124 PetriNetUnfolderBase]: 908/2786 cut-off events. [2024-11-20 21:56:29,632 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-20 21:56:29,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 2786 events. 908/2786 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22390 event pairs, 760 based on Foata normal form. 2/2420 useless extension candidates. Maximal degree in co-relation 4511. Up to 1686 conditions per place. [2024-11-20 21:56:29,642 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2024-11-20 21:56:29,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 133 transitions, 445 flow [2024-11-20 21:56:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 21:56:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 21:56:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2024-11-20 21:56:29,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4566170026292726 [2024-11-20 21:56:29,644 INFO L175 Difference]: Start difference. First operand has 133 places, 130 transitions, 291 flow. Second operand 7 states and 521 transitions. [2024-11-20 21:56:29,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 133 transitions, 445 flow [2024-11-20 21:56:29,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 439 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:56:29,646 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 322 flow [2024-11-20 21:56:29,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2024-11-20 21:56:29,647 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2024-11-20 21:56:29,647 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 322 flow [2024-11-20 21:56:29,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.375) internal successors, (523), 8 states have internal predecessors, (523), 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) [2024-11-20 21:56:29,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:29,648 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:29,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 21:56:29,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:29,850 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 21:56:29,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1252195870, now seen corresponding path program 2 times [2024-11-20 21:56:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:29,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772957222] [2024-11-20 21:56:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:29,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:29,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772957222] [2024-11-20 21:56:29,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772957222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:56:29,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170557826] [2024-11-20 21:56:29,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 21:56:29,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:29,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:29,961 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) [2024-11-20 21:56:29,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 21:56:30,035 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 21:56:30,035 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 21:56:30,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 21:56:30,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:56:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:30,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:56:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:30,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170557826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:56:30,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:56:30,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-20 21:56:30,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099977792] [2024-11-20 21:56:30,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:56:30,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 21:56:30,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 21:56:30,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-20 21:56:30,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-20 21:56:30,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 322 flow. Second operand has 16 states, 16 states have (on average 65.1875) internal successors, (1043), 16 states have internal predecessors, (1043), 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) [2024-11-20 21:56:30,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:30,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-20 21:56:30,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:30,512 INFO L124 PetriNetUnfolderBase]: 908/2798 cut-off events. [2024-11-20 21:56:30,512 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-20 21:56:30,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4574 conditions, 2798 events. 908/2798 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22439 event pairs, 760 based on Foata normal form. 4/2434 useless extension candidates. Maximal degree in co-relation 4491. Up to 1686 conditions per place. [2024-11-20 21:56:30,522 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2024-11-20 21:56:30,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 536 flow [2024-11-20 21:56:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 21:56:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 21:56:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1043 transitions. [2024-11-20 21:56:30,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4265848670756646 [2024-11-20 21:56:30,524 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 322 flow. Second operand 15 states and 1043 transitions. [2024-11-20 21:56:30,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 536 flow [2024-11-20 21:56:30,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 514 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-20 21:56:30,527 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 405 flow [2024-11-20 21:56:30,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=405, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2024-11-20 21:56:30,528 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 24 predicate places. [2024-11-20 21:56:30,528 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 405 flow [2024-11-20 21:56:30,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 65.1875) internal successors, (1043), 16 states have internal predecessors, (1043), 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) [2024-11-20 21:56:30,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:30,529 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:30,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 21:56:30,733 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,SelfDestructingSolverStorable5 [2024-11-20 21:56:30,734 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 21:56:30,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1365100194, now seen corresponding path program 3 times [2024-11-20 21:56:30,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:30,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514335700] [2024-11-20 21:56:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514335700] [2024-11-20 21:56:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514335700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:56:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052478764] [2024-11-20 21:56:30,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 21:56:30,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:30,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:30,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 21:56:30,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 21:56:31,041 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-20 21:56:31,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 21:56:31,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 21:56:31,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:56:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:31,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:56:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052478764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:56:31,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:56:31,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-11-20 21:56:31,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735647708] [2024-11-20 21:56:31,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:56:31,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 21:56:31,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:31,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 21:56:31,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-11-20 21:56:31,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-11-20 21:56:31,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 405 flow. Second operand has 21 states, 21 states have (on average 65.19047619047619) internal successors, (1369), 21 states have internal predecessors, (1369), 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) [2024-11-20 21:56:31,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:31,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-11-20 21:56:31,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:31,699 INFO L124 PetriNetUnfolderBase]: 908/2807 cut-off events. [2024-11-20 21:56:31,699 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-11-20 21:56:31,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 2807 events. 908/2807 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22398 event pairs, 760 based on Foata normal form. 3/2442 useless extension candidates. Maximal degree in co-relation 4491. Up to 1686 conditions per place. [2024-11-20 21:56:31,710 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-11-20 21:56:31,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 629 flow [2024-11-20 21:56:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 21:56:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 21:56:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1432 transitions. [2024-11-20 21:56:31,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41834647969617295 [2024-11-20 21:56:31,715 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 405 flow. Second operand 21 states and 1432 transitions. [2024-11-20 21:56:31,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 629 flow [2024-11-20 21:56:31,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 611 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-20 21:56:31,718 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 498 flow [2024-11-20 21:56:31,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=498, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2024-11-20 21:56:31,722 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 43 predicate places. [2024-11-20 21:56:31,722 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 498 flow [2024-11-20 21:56:31,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 65.19047619047619) internal successors, (1369), 21 states have internal predecessors, (1369), 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) [2024-11-20 21:56:31,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:31,723 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:31,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 21:56:31,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:31,924 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 21:56:31,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1930428173, now seen corresponding path program 4 times [2024-11-20 21:56:31,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:31,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800307937] [2024-11-20 21:56:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:31,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:56:31,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 21:56:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:56:32,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 21:56:32,007 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 21:56:32,008 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-20 21:56:32,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-11-20 21:56:32,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-11-20 21:56:32,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-11-20 21:56:32,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-11-20 21:56:32,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-11-20 21:56:32,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-11-20 21:56:32,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-11-20 21:56:32,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-11-20 21:56:32,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-11-20 21:56:32,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-11-20 21:56:32,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-11-20 21:56:32,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-11-20 21:56:32,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-11-20 21:56:32,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-11-20 21:56:32,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-11-20 21:56:32,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-11-20 21:56:32,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-11-20 21:56:32,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-11-20 21:56:32,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-11-20 21:56:32,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-11-20 21:56:32,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-11-20 21:56:32,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-11-20 21:56:32,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-11-20 21:56:32,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-11-20 21:56:32,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-11-20 21:56:32,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-11-20 21:56:32,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-11-20 21:56:32,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-11-20 21:56:32,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 21:56:32,016 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2024-11-20 21:56:32,017 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 21:56:32,017 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 21:56:32,044 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 21:56:32,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 215 transitions, 446 flow [2024-11-20 21:56:32,067 INFO L124 PetriNetUnfolderBase]: 97/420 cut-off events. [2024-11-20 21:56:32,067 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 21:56:32,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 420 events. 97/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2402 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 258. Up to 12 conditions per place. [2024-11-20 21:56:32,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 215 transitions, 446 flow [2024-11-20 21:56:32,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 215 transitions, 446 flow [2024-11-20 21:56:32,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:56:32,075 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;@79223a06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:56:32,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-20 21:56:32,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:56:32,089 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-20 21:56:32,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:56:32,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:32,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 21:56:32,090 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-20 21:56:32,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1143370, now seen corresponding path program 1 times [2024-11-20 21:56:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115201567] [2024-11-20 21:56:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:32,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:32,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115201567] [2024-11-20 21:56:32,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115201567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:32,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:32,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:32,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474132909] [2024-11-20 21:56:32,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:32,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:32,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-20 21:56:32,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 215 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:56:32,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:32,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-20 21:56:32,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:36,802 INFO L124 PetriNetUnfolderBase]: 38431/83197 cut-off events. [2024-11-20 21:56:36,802 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-20 21:56:36,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139040 conditions, 83197 events. 38431/83197 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 959923 event pairs, 33202 based on Foata normal form. 16614/88098 useless extension candidates. Maximal degree in co-relation 103580. Up to 55727 conditions per place. [2024-11-20 21:56:37,185 INFO L140 encePairwiseOnDemand]: 170/215 looper letters, 87 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2024-11-20 21:56:37,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 174 transitions, 546 flow [2024-11-20 21:56:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 464 transitions. [2024-11-20 21:56:37,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395348837209303 [2024-11-20 21:56:37,188 INFO L175 Difference]: Start difference. First operand has 170 places, 215 transitions, 446 flow. Second operand 4 states and 464 transitions. [2024-11-20 21:56:37,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 174 transitions, 546 flow [2024-11-20 21:56:37,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 174 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:56:37,191 INFO L231 Difference]: Finished difference. Result has 172 places, 174 transitions, 372 flow [2024-11-20 21:56:37,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=172, PETRI_TRANSITIONS=174} [2024-11-20 21:56:37,194 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2024-11-20 21:56:37,194 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 174 transitions, 372 flow [2024-11-20 21:56:37,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:56:37,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:37,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 21:56:37,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 21:56:37,195 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-20 21:56:37,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:37,195 INFO L85 PathProgramCache]: Analyzing trace with hash 35445689, now seen corresponding path program 1 times [2024-11-20 21:56:37,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:37,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224192603] [2024-11-20 21:56:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:37,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:37,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:37,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224192603] [2024-11-20 21:56:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224192603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:37,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:37,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153230888] [2024-11-20 21:56:37,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:37,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:37,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:37,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:37,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-20 21:56:37,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:56:37,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:37,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-20 21:56:37,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:42,229 INFO L124 PetriNetUnfolderBase]: 38431/83200 cut-off events. [2024-11-20 21:56:42,229 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-20 21:56:42,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139052 conditions, 83200 events. 38431/83200 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2461. Compared 959614 event pairs, 33202 based on Foata normal form. 1/71489 useless extension candidates. Maximal degree in co-relation 139025. Up to 55731 conditions per place. [2024-11-20 21:56:42,567 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 90 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2024-11-20 21:56:42,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 176 transitions, 566 flow [2024-11-20 21:56:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2024-11-20 21:56:42,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4965116279069767 [2024-11-20 21:56:42,569 INFO L175 Difference]: Start difference. First operand has 172 places, 174 transitions, 372 flow. Second operand 4 states and 427 transitions. [2024-11-20 21:56:42,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 176 transitions, 566 flow [2024-11-20 21:56:42,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 176 transitions, 554 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 21:56:42,573 INFO L231 Difference]: Finished difference. Result has 174 places, 176 transitions, 386 flow [2024-11-20 21:56:42,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2024-11-20 21:56:42,574 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 4 predicate places. [2024-11-20 21:56:42,574 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 386 flow [2024-11-20 21:56:42,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 21:56:42,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:42,575 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-20 21:56:42,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 21:56:42,575 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-20 21:56:42,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:42,575 INFO L85 PathProgramCache]: Analyzing trace with hash -598277569, now seen corresponding path program 1 times [2024-11-20 21:56:42,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:42,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578621248] [2024-11-20 21:56:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:42,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:56:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578621248] [2024-11-20 21:56:42,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578621248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:42,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:42,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:42,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116552170] [2024-11-20 21:56:42,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:42,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 21:56:42,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:42,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 21:56:42,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 21:56:42,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-20 21:56:42,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2024-11-20 21:56:42,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:42,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-20 21:56:42,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:47,466 INFO L124 PetriNetUnfolderBase]: 38431/83199 cut-off events. [2024-11-20 21:56:47,467 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-20 21:56:47,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139054 conditions, 83199 events. 38431/83199 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2461. Compared 959593 event pairs, 33202 based on Foata normal form. 0/71487 useless extension candidates. Maximal degree in co-relation 139035. Up to 55730 conditions per place. [2024-11-20 21:56:47,799 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 88 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2024-11-20 21:56:47,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 175 transitions, 566 flow [2024-11-20 21:56:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 21:56:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 21:56:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2024-11-20 21:56:47,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-11-20 21:56:47,802 INFO L175 Difference]: Start difference. First operand has 174 places, 176 transitions, 386 flow. Second operand 3 states and 340 transitions. [2024-11-20 21:56:47,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 175 transitions, 566 flow [2024-11-20 21:56:47,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 175 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:56:47,805 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 388 flow [2024-11-20 21:56:47,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2024-11-20 21:56:47,805 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 4 predicate places. [2024-11-20 21:56:47,806 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 388 flow [2024-11-20 21:56:47,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2024-11-20 21:56:47,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:47,806 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:47,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 21:56:47,806 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-20 21:56:47,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:47,806 INFO L85 PathProgramCache]: Analyzing trace with hash 580166712, now seen corresponding path program 1 times [2024-11-20 21:56:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:47,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407512080] [2024-11-20 21:56:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:47,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:56:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:47,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407512080] [2024-11-20 21:56:47,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407512080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:47,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:47,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:56:47,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066918397] [2024-11-20 21:56:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:47,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:47,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:47,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:47,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 215 [2024-11-20 21:56:47,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-11-20 21:56:47,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:47,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 215 [2024-11-20 21:56:47,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:52,554 INFO L124 PetriNetUnfolderBase]: 40161/83753 cut-off events. [2024-11-20 21:56:52,554 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-20 21:56:52,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142445 conditions, 83753 events. 40161/83753 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 2337. Compared 937092 event pairs, 17300 based on Foata normal form. 21/72431 useless extension candidates. Maximal degree in co-relation 142421. Up to 58500 conditions per place. [2024-11-20 21:56:52,963 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 137 selfloop transitions, 3 changer transitions 0/220 dead transitions. [2024-11-20 21:56:52,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 220 transitions, 758 flow [2024-11-20 21:56:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-20 21:56:52,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5453488372093023 [2024-11-20 21:56:52,965 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 388 flow. Second operand 4 states and 469 transitions. [2024-11-20 21:56:52,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 220 transitions, 758 flow [2024-11-20 21:56:52,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 220 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 21:56:52,969 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 404 flow [2024-11-20 21:56:52,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=177, PETRI_TRANSITIONS=177} [2024-11-20 21:56:52,969 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 7 predicate places. [2024-11-20 21:56:52,969 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 404 flow [2024-11-20 21:56:52,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-11-20 21:56:52,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:52,970 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:52,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 21:56:52,970 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-20 21:56:52,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:52,970 INFO L85 PathProgramCache]: Analyzing trace with hash -602092607, now seen corresponding path program 1 times [2024-11-20 21:56:52,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:52,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142764733] [2024-11-20 21:56:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:52,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 21:56:53,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:53,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142764733] [2024-11-20 21:56:53,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142764733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:56:53,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200415288] [2024-11-20 21:56:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:53,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:53,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:53,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 21:56:53,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 21:56:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:53,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 21:56:53,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:56:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 21:56:53,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:56:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 21:56:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200415288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:56:53,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:56:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-20 21:56:53,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744163037] [2024-11-20 21:56:53,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:56:53,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 21:56:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 21:56:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:56:53,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-20 21:56:53,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 177 transitions, 404 flow. Second operand has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 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) [2024-11-20 21:56:53,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:53,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-20 21:56:53,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:58,484 INFO L124 PetriNetUnfolderBase]: 38330/84251 cut-off events. [2024-11-20 21:56:58,484 INFO L125 PetriNetUnfolderBase]: For 1083/1925 co-relation queries the response was YES. [2024-11-20 21:56:58,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140918 conditions, 84251 events. 38330/84251 cut-off events. For 1083/1925 co-relation queries the response was YES. Maximal size of possible extension queue 2445. Compared 980890 event pairs, 33200 based on Foata normal form. 19/72869 useless extension candidates. Maximal degree in co-relation 140884. Up to 55567 conditions per place. [2024-11-20 21:56:58,832 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 89 selfloop transitions, 7 changer transitions 0/180 dead transitions. [2024-11-20 21:56:58,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 180 transitions, 608 flow [2024-11-20 21:56:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 21:56:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 21:56:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 678 transitions. [2024-11-20 21:56:58,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4504983388704319 [2024-11-20 21:56:58,835 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 404 flow. Second operand 7 states and 678 transitions. [2024-11-20 21:56:58,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 180 transitions, 608 flow [2024-11-20 21:56:58,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 180 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:56:58,838 INFO L231 Difference]: Finished difference. Result has 184 places, 180 transitions, 439 flow [2024-11-20 21:56:58,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=184, PETRI_TRANSITIONS=180} [2024-11-20 21:56:58,839 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 14 predicate places. [2024-11-20 21:56:58,839 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 180 transitions, 439 flow [2024-11-20 21:56:58,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 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) [2024-11-20 21:56:58,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:58,840 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:58,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 21:56:59,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:59,040 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-20 21:56:59,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:59,041 INFO L85 PathProgramCache]: Analyzing trace with hash -769645055, now seen corresponding path program 2 times [2024-11-20 21:56:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:59,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062314946] [2024-11-20 21:56:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 21:56:59,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:59,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062314946] [2024-11-20 21:56:59,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062314946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:56:59,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738977694] [2024-11-20 21:56:59,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 21:56:59,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:59,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:59,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 21:56:59,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 21:56:59,211 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 21:56:59,211 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 21:56:59,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 21:56:59,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:56:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 21:56:59,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 21:56:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 21:56:59,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738977694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 21:56:59,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 21:56:59,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-20 21:56:59,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474242260] [2024-11-20 21:56:59,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 21:56:59,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 21:56:59,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:59,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 21:56:59,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-20 21:56:59,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-11-20 21:56:59,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 180 transitions, 439 flow. Second operand has 16 states, 16 states have (on average 84.25) internal successors, (1348), 16 states have internal predecessors, (1348), 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) [2024-11-20 21:56:59,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:59,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-11-20 21:56:59,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand