/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:39:37,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:39:37,866 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 04:39:37,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:39:37,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:39:37,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:39:37,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:39:37,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:39:37,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:39:37,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:39:37,904 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:39:37,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:39:37,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:39:37,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:39:37,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:39:37,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:39:37,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:39:37,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:39:37,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:39:37,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:39:37,906 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:39:37,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:39:37,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:39:37,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:39:37,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:39:37,908 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:39:37,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:39:37,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:39:37,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:39:37,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:39:37,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:39:37,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:39:37,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:39:37,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:39:37,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:39:37,910 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:39:38,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:39:38,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:39:38,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:39:38,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:39:38,163 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:39:38,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2023-08-27 04:39:39,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:39:39,299 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:39:39,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2023-08-27 04:39:39,316 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02be6f5b7/a60d701e68124948bd7eb96522d2ad12/FLAG2d675ebcb [2023-08-27 04:39:39,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02be6f5b7/a60d701e68124948bd7eb96522d2ad12 [2023-08-27 04:39:39,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:39:39,331 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:39:39,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:39:39,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:39:39,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:39:39,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1a8320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39, skipping insertion in model container [2023-08-27 04:39:39,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,378 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:39:39,489 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 04:39:39,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:39:39,754 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:39:39,766 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 04:39:39,777 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-27 04:39:39,778 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-27 04:39:39,783 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile long [805] [2023-08-27 04:39:39,783 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [806] [2023-08-27 04:39:39,784 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile long [807] [2023-08-27 04:39:39,784 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [809] [2023-08-27 04:39:39,785 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [814] [2023-08-27 04:39:39,785 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [815] [2023-08-27 04:39:39,786 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [827] [2023-08-27 04:39:39,788 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [843] [2023-08-27 04:39:39,794 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [899] [2023-08-27 04:39:39,798 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1054] [2023-08-27 04:39:39,812 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1078] [2023-08-27 04:39:39,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:39:39,863 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 04:39:39,867 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:39:39,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39 WrapperNode [2023-08-27 04:39:39,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:39:39,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:39:39,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:39:39,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:39:39,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,931 INFO L138 Inliner]: procedures = 310, calls = 77, calls flagged for inlining = 17, calls inlined = 12, statements flattened = 244 [2023-08-27 04:39:39,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:39:39,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:39:39,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:39:39,932 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:39:39,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:39:39,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:39:39,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:39:39,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:39:39,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (1/1) ... [2023-08-27 04:39:39,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:39:39,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:39:39,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 04:39:39,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 04:39:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-08-27 04:39:40,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-08-27 04:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-08-27 04:39:40,007 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-08-27 04:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:39:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:39:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:39:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:39:40,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:39:40,009 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:39:40,121 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:39:40,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:39:40,435 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:39:40,440 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:39:40,441 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 04:39:40,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:39:40 BoogieIcfgContainer [2023-08-27 04:39:40,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:39:40,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:39:40,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:39:40,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:39:40,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:39:39" (1/3) ... [2023-08-27 04:39:40,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64db2c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:39:40, skipping insertion in model container [2023-08-27 04:39:40,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:39:39" (2/3) ... [2023-08-27 04:39:40,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64db2c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:39:40, skipping insertion in model container [2023-08-27 04:39:40,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:39:40" (3/3) ... [2023-08-27 04:39:40,447 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2023-08-27 04:39:40,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:39:40,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-27 04:39:40,457 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:39:40,544 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 04:39:40,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 292 transitions, 600 flow [2023-08-27 04:39:40,684 INFO L124 PetriNetUnfolderBase]: 21/290 cut-off events. [2023-08-27 04:39:40,685 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 04:39:40,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 290 events. 21/290 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 722 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-08-27 04:39:40,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 292 transitions, 600 flow [2023-08-27 04:39:40,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 280 transitions, 569 flow [2023-08-27 04:39:40,706 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:39:40,716 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 280 transitions, 569 flow [2023-08-27 04:39:40,718 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 280 transitions, 569 flow [2023-08-27 04:39:40,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 280 transitions, 569 flow [2023-08-27 04:39:40,769 INFO L124 PetriNetUnfolderBase]: 21/280 cut-off events. [2023-08-27 04:39:40,769 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 04:39:40,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 280 events. 21/280 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 674 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-08-27 04:39:40,787 INFO L119 LiptonReduction]: Number of co-enabled transitions 35284 [2023-08-27 04:39:45,833 INFO L134 LiptonReduction]: Checked pairs total: 56396 [2023-08-27 04:39:45,833 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-08-27 04:39:45,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:39:45,852 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3814ab2a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:39:45,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-08-27 04:39:45,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:39:45,858 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-27 04:39:45,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:39:45,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:39:45,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:39:45,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:39:45,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:39:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash 18592408, now seen corresponding path program 1 times [2023-08-27 04:39:45,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:39:45,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415196824] [2023-08-27 04:39:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:39:45,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:39:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:39:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:39:46,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:39:46,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415196824] [2023-08-27 04:39:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415196824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:39:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:39:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:39:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123495786] [2023-08-27 04:39:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:39:46,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:39:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:39:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:39:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:39:46,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 577 [2023-08-27 04:39:46,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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) [2023-08-27 04:39:46,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:39:46,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 577 [2023-08-27 04:39:46,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:39:48,260 INFO L124 PetriNetUnfolderBase]: 23635/34765 cut-off events. [2023-08-27 04:39:48,260 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-27 04:39:48,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68888 conditions, 34765 events. 23635/34765 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 929. Compared 236701 event pairs, 11511 based on Foata normal form. 776/18669 useless extension candidates. Maximal degree in co-relation 68739. Up to 20175 conditions per place. [2023-08-27 04:39:48,403 INFO L140 encePairwiseOnDemand]: 564/577 looper letters, 117 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-27 04:39:48,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 507 flow [2023-08-27 04:39:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:39:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:39:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2023-08-27 04:39:48,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262853841709995 [2023-08-27 04:39:48,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2023-08-27 04:39:48,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2023-08-27 04:39:48,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:39:48,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2023-08-27 04:39:48,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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) [2023-08-27 04:39:48,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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) [2023-08-27 04:39:48,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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) [2023-08-27 04:39:48,435 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 175 flow. Second operand 3 states and 911 transitions. [2023-08-27 04:39:48,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 507 flow [2023-08-27 04:39:48,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 502 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:39:48,443 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 174 flow [2023-08-27 04:39:48,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2023-08-27 04:39:48,447 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -4 predicate places. [2023-08-27 04:39:48,447 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 174 flow [2023-08-27 04:39:48,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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) [2023-08-27 04:39:48,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:39:48,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:39:48,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:39:48,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writer_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:39:48,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:39:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash 18589716, now seen corresponding path program 1 times [2023-08-27 04:39:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:39:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990771527] [2023-08-27 04:39:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:39:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:39:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:39:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:39:48,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:39:48,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990771527] [2023-08-27 04:39:48,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990771527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:39:48,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:39:48,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:39:48,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287454021] [2023-08-27 04:39:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:39:48,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:39:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:39:48,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:39:48,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:39:48,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-08-27 04:39:48,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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) [2023-08-27 04:39:48,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:39:48,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-08-27 04:39:48,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:39:51,772 INFO L124 PetriNetUnfolderBase]: 39909/58283 cut-off events. [2023-08-27 04:39:51,772 INFO L125 PetriNetUnfolderBase]: For 3755/3755 co-relation queries the response was YES. [2023-08-27 04:39:51,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120454 conditions, 58283 events. 39909/58283 cut-off events. For 3755/3755 co-relation queries the response was YES. Maximal size of possible extension queue 1387. Compared 394277 event pairs, 28596 based on Foata normal form. 0/31799 useless extension candidates. Maximal degree in co-relation 111381. Up to 34051 conditions per place. [2023-08-27 04:39:51,996 INFO L140 encePairwiseOnDemand]: 571/577 looper letters, 121 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-08-27 04:39:51,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 134 transitions, 551 flow [2023-08-27 04:39:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:39:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:39:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2023-08-27 04:39:51,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210860774119006 [2023-08-27 04:39:51,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2023-08-27 04:39:51,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2023-08-27 04:39:51,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:39:51,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2023-08-27 04:39:52,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 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) [2023-08-27 04:39:52,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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) [2023-08-27 04:39:52,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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) [2023-08-27 04:39:52,004 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 174 flow. Second operand 3 states and 902 transitions. [2023-08-27 04:39:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 134 transitions, 551 flow [2023-08-27 04:39:52,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 134 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:39:52,008 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 190 flow [2023-08-27 04:39:52,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-08-27 04:39:52,009 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2023-08-27 04:39:52,009 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 190 flow [2023-08-27 04:39:52,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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) [2023-08-27 04:39:52,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:39:52,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:39:52,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:39:52,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:39:52,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:39:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash 576368544, now seen corresponding path program 1 times [2023-08-27 04:39:52,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:39:52,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463082356] [2023-08-27 04:39:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:39:52,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:39:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:39:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:39:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:39:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463082356] [2023-08-27 04:39:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463082356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:39:52,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:39:52,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:39:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033375075] [2023-08-27 04:39:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:39:52,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:39:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:39:52,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:39:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:39:52,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 577 [2023-08-27 04:39:52,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 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) [2023-08-27 04:39:52,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:39:52,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 577 [2023-08-27 04:39:52,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:39:57,169 INFO L124 PetriNetUnfolderBase]: 60999/88406 cut-off events. [2023-08-27 04:39:57,169 INFO L125 PetriNetUnfolderBase]: For 7550/7550 co-relation queries the response was YES. [2023-08-27 04:39:57,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190857 conditions, 88406 events. 60999/88406 cut-off events. For 7550/7550 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 587994 event pairs, 25928 based on Foata normal form. 0/50457 useless extension candidates. Maximal degree in co-relation 179201. Up to 85653 conditions per place. [2023-08-27 04:39:57,513 INFO L140 encePairwiseOnDemand]: 567/577 looper letters, 157 selfloop transitions, 16 changer transitions 0/174 dead transitions. [2023-08-27 04:39:57,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 174 transitions, 741 flow [2023-08-27 04:39:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 04:39:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 04:39:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1223 transitions. [2023-08-27 04:39:57,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239168110918544 [2023-08-27 04:39:57,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1223 transitions. [2023-08-27 04:39:57,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1223 transitions. [2023-08-27 04:39:57,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:39:57,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1223 transitions. [2023-08-27 04:39:57,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.6) internal successors, (1223), 5 states have internal predecessors, (1223), 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) [2023-08-27 04:39:57,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 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) [2023-08-27 04:39:57,524 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 577.0) internal successors, (3462), 6 states have internal predecessors, (3462), 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) [2023-08-27 04:39:57,524 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 190 flow. Second operand 5 states and 1223 transitions. [2023-08-27 04:39:57,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 174 transitions, 741 flow [2023-08-27 04:39:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 174 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:39:57,529 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 288 flow [2023-08-27 04:39:57,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2023-08-27 04:39:57,530 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2023-08-27 04:39:57,530 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 288 flow [2023-08-27 04:39:57,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 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) [2023-08-27 04:39:57,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:39:57,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:39:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:39:57,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:39:57,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:39:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash 576282801, now seen corresponding path program 1 times [2023-08-27 04:39:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:39:57,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157711832] [2023-08-27 04:39:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:39:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:39:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:39:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:39:57,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:39:57,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157711832] [2023-08-27 04:39:57,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157711832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:39:57,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:39:57,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 04:39:57,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392329472] [2023-08-27 04:39:57,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:39:57,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 04:39:57,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:39:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 04:39:57,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 04:39:57,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 577 [2023-08-27 04:39:57,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 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) [2023-08-27 04:39:57,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:39:57,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 577 [2023-08-27 04:39:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:02,930 INFO L124 PetriNetUnfolderBase]: 60508/87699 cut-off events. [2023-08-27 04:40:02,930 INFO L125 PetriNetUnfolderBase]: For 14383/14383 co-relation queries the response was YES. [2023-08-27 04:40:03,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201899 conditions, 87699 events. 60508/87699 cut-off events. For 14383/14383 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 584042 event pairs, 27427 based on Foata normal form. 0/51859 useless extension candidates. Maximal degree in co-relation 98942. Up to 85582 conditions per place. [2023-08-27 04:40:03,315 INFO L140 encePairwiseOnDemand]: 566/577 looper letters, 167 selfloop transitions, 40 changer transitions 0/208 dead transitions. [2023-08-27 04:40:03,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 208 transitions, 1025 flow [2023-08-27 04:40:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:40:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:40:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1447 transitions. [2023-08-27 04:40:03,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796649335644137 [2023-08-27 04:40:03,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1447 transitions. [2023-08-27 04:40:03,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1447 transitions. [2023-08-27 04:40:03,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:03,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1447 transitions. [2023-08-27 04:40:03,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.16666666666666) internal successors, (1447), 6 states have internal predecessors, (1447), 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) [2023-08-27 04:40:03,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 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) [2023-08-27 04:40:03,327 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 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) [2023-08-27 04:40:03,327 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 288 flow. Second operand 6 states and 1447 transitions. [2023-08-27 04:40:03,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 208 transitions, 1025 flow [2023-08-27 04:40:03,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 208 transitions, 1025 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 04:40:03,341 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 546 flow [2023-08-27 04:40:03,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=93, PETRI_TRANSITIONS=119} [2023-08-27 04:40:03,343 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 13 predicate places. [2023-08-27 04:40:03,343 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 546 flow [2023-08-27 04:40:03,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 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) [2023-08-27 04:40:03,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:03,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:03,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 04:40:03,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writer_fnErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:40:03,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1750836467, now seen corresponding path program 1 times [2023-08-27 04:40:03,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:03,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399423664] [2023-08-27 04:40:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:03,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:03,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399423664] [2023-08-27 04:40:03,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399423664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:03,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:03,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 04:40:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528251916] [2023-08-27 04:40:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:03,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 04:40:03,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 04:40:03,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-27 04:40:03,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 577 [2023-08-27 04:40:03,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 546 flow. Second operand has 8 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 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) [2023-08-27 04:40:03,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:03,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 577 [2023-08-27 04:40:03,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:14,165 INFO L124 PetriNetUnfolderBase]: 111890/163411 cut-off events. [2023-08-27 04:40:14,165 INFO L125 PetriNetUnfolderBase]: For 30735/30735 co-relation queries the response was YES. [2023-08-27 04:40:14,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389558 conditions, 163411 events. 111890/163411 cut-off events. For 30735/30735 co-relation queries the response was YES. Maximal size of possible extension queue 2576. Compared 1211299 event pairs, 22311 based on Foata normal form. 0/99836 useless extension candidates. Maximal degree in co-relation 368271. Up to 48127 conditions per place. [2023-08-27 04:40:15,143 INFO L140 encePairwiseOnDemand]: 558/577 looper letters, 566 selfloop transitions, 64 changer transitions 0/631 dead transitions. [2023-08-27 04:40:15,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 631 transitions, 3346 flow [2023-08-27 04:40:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 04:40:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 04:40:15,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2512 transitions. [2023-08-27 04:40:15,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43535528596187173 [2023-08-27 04:40:15,148 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2512 transitions. [2023-08-27 04:40:15,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2512 transitions. [2023-08-27 04:40:15,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:15,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2512 transitions. [2023-08-27 04:40:15,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.2) internal successors, (2512), 10 states have internal predecessors, (2512), 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) [2023-08-27 04:40:15,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 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) [2023-08-27 04:40:15,159 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 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) [2023-08-27 04:40:15,159 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 546 flow. Second operand 10 states and 2512 transitions. [2023-08-27 04:40:15,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 631 transitions, 3346 flow [2023-08-27 04:40:15,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 631 transitions, 3279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:40:15,185 INFO L231 Difference]: Finished difference. Result has 106 places, 184 transitions, 1121 flow [2023-08-27 04:40:15,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1121, PETRI_PLACES=106, PETRI_TRANSITIONS=184} [2023-08-27 04:40:15,186 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 26 predicate places. [2023-08-27 04:40:15,186 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 184 transitions, 1121 flow [2023-08-27 04:40:15,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 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) [2023-08-27 04:40:15,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:15,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:15,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 04:40:15,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting writer_fnErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:40:15,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1750836411, now seen corresponding path program 1 times [2023-08-27 04:40:15,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:15,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316362553] [2023-08-27 04:40:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:15,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:15,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:15,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316362553] [2023-08-27 04:40:15,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316362553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:15,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:15,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 04:40:15,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57221734] [2023-08-27 04:40:15,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:15,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 04:40:15,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 04:40:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-27 04:40:15,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 577 [2023-08-27 04:40:15,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 184 transitions, 1121 flow. Second operand has 8 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 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) [2023-08-27 04:40:15,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:15,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 577 [2023-08-27 04:40:15,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:28,251 INFO L124 PetriNetUnfolderBase]: 113432/167913 cut-off events. [2023-08-27 04:40:28,252 INFO L125 PetriNetUnfolderBase]: For 109673/109673 co-relation queries the response was YES. [2023-08-27 04:40:28,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480951 conditions, 167913 events. 113432/167913 cut-off events. For 109673/109673 co-relation queries the response was YES. Maximal size of possible extension queue 2824. Compared 1278320 event pairs, 24574 based on Foata normal form. 866/111212 useless extension candidates. Maximal degree in co-relation 455536. Up to 51816 conditions per place. [2023-08-27 04:40:29,545 INFO L140 encePairwiseOnDemand]: 558/577 looper letters, 569 selfloop transitions, 79 changer transitions 0/649 dead transitions. [2023-08-27 04:40:29,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 649 transitions, 3926 flow [2023-08-27 04:40:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 04:40:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 04:40:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2510 transitions. [2023-08-27 04:40:29,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43500866551126516 [2023-08-27 04:40:29,565 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2510 transitions. [2023-08-27 04:40:29,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2510 transitions. [2023-08-27 04:40:29,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:29,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2510 transitions. [2023-08-27 04:40:29,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.0) internal successors, (2510), 10 states have internal predecessors, (2510), 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) [2023-08-27 04:40:29,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 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) [2023-08-27 04:40:29,576 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 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) [2023-08-27 04:40:29,576 INFO L175 Difference]: Start difference. First operand has 106 places, 184 transitions, 1121 flow. Second operand 10 states and 2510 transitions. [2023-08-27 04:40:29,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 649 transitions, 3926 flow [2023-08-27 04:40:31,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 649 transitions, 3914 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 04:40:31,480 INFO L231 Difference]: Finished difference. Result has 116 places, 203 transitions, 1448 flow [2023-08-27 04:40:31,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1448, PETRI_PLACES=116, PETRI_TRANSITIONS=203} [2023-08-27 04:40:31,480 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 36 predicate places. [2023-08-27 04:40:31,480 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 203 transitions, 1448 flow [2023-08-27 04:40:31,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 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) [2023-08-27 04:40:31,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:31,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:31,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 04:40:31,481 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:40:31,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2802960, now seen corresponding path program 1 times [2023-08-27 04:40:31,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:31,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746757913] [2023-08-27 04:40:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:31,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:31,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:31,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746757913] [2023-08-27 04:40:31,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746757913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:31,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:31,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 04:40:31,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081847650] [2023-08-27 04:40:31,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:31,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 04:40:31,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 04:40:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-27 04:40:31,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 577 [2023-08-27 04:40:31,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 203 transitions, 1448 flow. Second operand has 8 states, 8 states have (on average 197.375) internal successors, (1579), 8 states have internal predecessors, (1579), 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) [2023-08-27 04:40:31,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:31,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 577 [2023-08-27 04:40:31,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:55,044 INFO L124 PetriNetUnfolderBase]: 200515/299268 cut-off events. [2023-08-27 04:40:55,044 INFO L125 PetriNetUnfolderBase]: For 372320/372320 co-relation queries the response was YES. [2023-08-27 04:40:56,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902597 conditions, 299268 events. 200515/299268 cut-off events. For 372320/372320 co-relation queries the response was YES. Maximal size of possible extension queue 4914. Compared 2467782 event pairs, 42419 based on Foata normal form. 0/199114 useless extension candidates. Maximal degree in co-relation 862279. Up to 92855 conditions per place. [2023-08-27 04:40:56,981 INFO L140 encePairwiseOnDemand]: 559/577 looper letters, 937 selfloop transitions, 180 changer transitions 0/1118 dead transitions. [2023-08-27 04:40:56,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1118 transitions, 9353 flow [2023-08-27 04:40:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 04:40:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 04:40:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2491 transitions. [2023-08-27 04:40:56,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4317157712305026 [2023-08-27 04:40:56,998 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2491 transitions. [2023-08-27 04:40:57,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2491 transitions. [2023-08-27 04:40:57,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:57,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2491 transitions. [2023-08-27 04:40:57,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 249.1) internal successors, (2491), 10 states have internal predecessors, (2491), 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) [2023-08-27 04:40:57,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 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) [2023-08-27 04:40:57,022 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 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) [2023-08-27 04:40:57,022 INFO L175 Difference]: Start difference. First operand has 116 places, 203 transitions, 1448 flow. Second operand 10 states and 2491 transitions. [2023-08-27 04:40:57,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 1118 transitions, 9353 flow [2023-08-27 04:40:58,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 1118 transitions, 9209 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-08-27 04:40:58,581 INFO L231 Difference]: Finished difference. Result has 126 places, 426 transitions, 4005 flow [2023-08-27 04:40:58,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4005, PETRI_PLACES=126, PETRI_TRANSITIONS=426} [2023-08-27 04:40:58,582 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 46 predicate places. [2023-08-27 04:40:58,582 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 426 transitions, 4005 flow [2023-08-27 04:40:58,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 197.375) internal successors, (1579), 8 states have internal predecessors, (1579), 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) [2023-08-27 04:40:58,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:58,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:58,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 04:40:58,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:40:58,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2803082, now seen corresponding path program 1 times [2023-08-27 04:40:58,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:58,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920810981] [2023-08-27 04:40:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:58,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:58,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:58,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920810981] [2023-08-27 04:40:58,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920810981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:58,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:58,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 04:40:58,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379707220] [2023-08-27 04:40:58,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:58,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 04:40:58,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:58,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 04:40:58,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-27 04:40:58,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 577 [2023-08-27 04:40:58,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 426 transitions, 4005 flow. Second operand has 8 states, 8 states have (on average 197.375) internal successors, (1579), 8 states have internal predecessors, (1579), 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) [2023-08-27 04:40:58,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:58,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 577 [2023-08-27 04:40:58,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:31,150 INFO L124 PetriNetUnfolderBase]: 208756/316097 cut-off events. [2023-08-27 04:41:31,150 INFO L125 PetriNetUnfolderBase]: For 582667/582667 co-relation queries the response was YES. [2023-08-27 04:41:32,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087933 conditions, 316097 events. 208756/316097 cut-off events. For 582667/582667 co-relation queries the response was YES. Maximal size of possible extension queue 5393. Compared 2694012 event pairs, 43893 based on Foata normal form. 3408/233672 useless extension candidates. Maximal degree in co-relation 1041926. Up to 96837 conditions per place. [2023-08-27 04:41:33,717 INFO L140 encePairwiseOnDemand]: 558/577 looper letters, 976 selfloop transitions, 281 changer transitions 0/1258 dead transitions. [2023-08-27 04:41:33,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 1258 transitions, 12433 flow [2023-08-27 04:41:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 04:41:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 04:41:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2490 transitions. [2023-08-27 04:41:33,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154246100519933 [2023-08-27 04:41:33,722 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2490 transitions. [2023-08-27 04:41:33,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2490 transitions. [2023-08-27 04:41:33,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:33,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2490 transitions. [2023-08-27 04:41:33,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 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) [2023-08-27 04:41:33,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 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) [2023-08-27 04:41:33,747 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 577.0) internal successors, (6347), 11 states have internal predecessors, (6347), 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) [2023-08-27 04:41:33,747 INFO L175 Difference]: Start difference. First operand has 126 places, 426 transitions, 4005 flow. Second operand 10 states and 2490 transitions. [2023-08-27 04:41:33,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 1258 transitions, 12433 flow [2023-08-27 04:41:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 1258 transitions, 12421 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 04:41:42,788 INFO L231 Difference]: Finished difference. Result has 138 places, 569 transitions, 6570 flow [2023-08-27 04:41:42,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=3981, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6570, PETRI_PLACES=138, PETRI_TRANSITIONS=569} [2023-08-27 04:41:42,789 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 58 predicate places. [2023-08-27 04:41:42,789 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 569 transitions, 6570 flow [2023-08-27 04:41:42,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 197.375) internal successors, (1579), 8 states have internal predecessors, (1579), 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) [2023-08-27 04:41:42,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:42,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:42,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 04:41:42,790 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:41:42,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1079348057, now seen corresponding path program 1 times [2023-08-27 04:41:42,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:42,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676820557] [2023-08-27 04:41:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:42,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:42,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:42,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676820557] [2023-08-27 04:41:42,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676820557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:42,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:41:42,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:41:42,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832274876] [2023-08-27 04:41:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:42,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:41:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:41:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:41:42,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 577 [2023-08-27 04:41:42,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 569 transitions, 6570 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-08-27 04:41:42,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:42,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 577 [2023-08-27 04:41:42,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:50,735 INFO L124 PetriNetUnfolderBase]: 38079/66005 cut-off events. [2023-08-27 04:41:50,735 INFO L125 PetriNetUnfolderBase]: For 160614/160992 co-relation queries the response was YES. [2023-08-27 04:41:51,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232178 conditions, 66005 events. 38079/66005 cut-off events. For 160614/160992 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 586805 event pairs, 6425 based on Foata normal form. 7978/54256 useless extension candidates. Maximal degree in co-relation 217282. Up to 52380 conditions per place. [2023-08-27 04:41:51,293 INFO L140 encePairwiseOnDemand]: 567/577 looper letters, 342 selfloop transitions, 24 changer transitions 0/383 dead transitions. [2023-08-27 04:41:51,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 383 transitions, 4090 flow [2023-08-27 04:41:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:41:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:41:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 893 transitions. [2023-08-27 04:41:51,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158867706528019 [2023-08-27 04:41:51,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 893 transitions. [2023-08-27 04:41:51,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 893 transitions. [2023-08-27 04:41:51,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:51,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 893 transitions. [2023-08-27 04:41:51,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 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) [2023-08-27 04:41:51,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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) [2023-08-27 04:41:51,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 577.0) internal successors, (2308), 4 states have internal predecessors, (2308), 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) [2023-08-27 04:41:51,299 INFO L175 Difference]: Start difference. First operand has 138 places, 569 transitions, 6570 flow. Second operand 3 states and 893 transitions. [2023-08-27 04:41:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 383 transitions, 4090 flow [2023-08-27 04:41:52,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 383 transitions, 3893 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-27 04:41:52,378 INFO L231 Difference]: Finished difference. Result has 136 places, 330 transitions, 2912 flow [2023-08-27 04:41:52,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2912, PETRI_PLACES=136, PETRI_TRANSITIONS=330} [2023-08-27 04:41:52,379 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 56 predicate places. [2023-08-27 04:41:52,379 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 330 transitions, 2912 flow [2023-08-27 04:41:52,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-08-27 04:41:52,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:52,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:52,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 04:41:52,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:41:52,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1901251930, now seen corresponding path program 1 times [2023-08-27 04:41:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:52,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932755140] [2023-08-27 04:41:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:52,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932755140] [2023-08-27 04:41:52,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932755140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499453175] [2023-08-27 04:41:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:52,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:52,422 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) [2023-08-27 04:41:52,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 04:41:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:52,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 04:41:52,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:52,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:41:52,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499453175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:52,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 04:41:52,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 04:41:52,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329312490] [2023-08-27 04:41:52,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:52,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:41:52,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:52,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:41:52,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:41:52,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 577 [2023-08-27 04:41:52,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 330 transitions, 2912 flow. Second operand has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 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) [2023-08-27 04:41:52,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:52,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 577 [2023-08-27 04:41:52,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:41:58,637 INFO L124 PetriNetUnfolderBase]: 33984/57733 cut-off events. [2023-08-27 04:41:58,637 INFO L125 PetriNetUnfolderBase]: For 135607/137248 co-relation queries the response was YES. [2023-08-27 04:41:58,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205256 conditions, 57733 events. 33984/57733 cut-off events. For 135607/137248 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 485639 event pairs, 11815 based on Foata normal form. 2539/45079 useless extension candidates. Maximal degree in co-relation 184372. Up to 22785 conditions per place. [2023-08-27 04:41:59,011 INFO L140 encePairwiseOnDemand]: 572/577 looper letters, 512 selfloop transitions, 5 changer transitions 0/534 dead transitions. [2023-08-27 04:41:59,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 534 transitions, 5477 flow [2023-08-27 04:41:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:41:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:41:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1193 transitions. [2023-08-27 04:41:59,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516897746967071 [2023-08-27 04:41:59,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1193 transitions. [2023-08-27 04:41:59,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1193 transitions. [2023-08-27 04:41:59,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:41:59,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1193 transitions. [2023-08-27 04:41:59,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 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) [2023-08-27 04:41:59,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 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) [2023-08-27 04:41:59,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 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) [2023-08-27 04:41:59,021 INFO L175 Difference]: Start difference. First operand has 136 places, 330 transitions, 2912 flow. Second operand 4 states and 1193 transitions. [2023-08-27 04:41:59,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 534 transitions, 5477 flow [2023-08-27 04:41:59,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 534 transitions, 5432 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:41:59,486 INFO L231 Difference]: Finished difference. Result has 136 places, 328 transitions, 2888 flow [2023-08-27 04:41:59,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2878, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2888, PETRI_PLACES=136, PETRI_TRANSITIONS=328} [2023-08-27 04:41:59,486 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 56 predicate places. [2023-08-27 04:41:59,486 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 328 transitions, 2888 flow [2023-08-27 04:41:59,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 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) [2023-08-27 04:41:59,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:41:59,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:41:59,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 04:41:59,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 04:41:59,691 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting writer_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:41:59,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:41:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1083860525, now seen corresponding path program 1 times [2023-08-27 04:41:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:41:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623192465] [2023-08-27 04:41:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:59,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:41:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:59,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:41:59,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623192465] [2023-08-27 04:41:59,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623192465] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:41:59,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322383777] [2023-08-27 04:41:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:41:59,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:41:59,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:41:59,724 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) [2023-08-27 04:41:59,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 04:41:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:41:59,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 04:41:59,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:41:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:41:59,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:41:59,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322383777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:41:59,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 04:41:59,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 04:41:59,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697481252] [2023-08-27 04:41:59,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:41:59,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:41:59,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:41:59,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:41:59,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:41:59,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-08-27 04:41:59,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 328 transitions, 2888 flow. Second operand has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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) [2023-08-27 04:41:59,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:41:59,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-08-27 04:41:59,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:42:04,933 INFO L124 PetriNetUnfolderBase]: 30295/51349 cut-off events. [2023-08-27 04:42:04,933 INFO L125 PetriNetUnfolderBase]: For 130190/131531 co-relation queries the response was YES. [2023-08-27 04:42:05,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185544 conditions, 51349 events. 30295/51349 cut-off events. For 130190/131531 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 422616 event pairs, 9454 based on Foata normal form. 2148/40407 useless extension candidates. Maximal degree in co-relation 173424. Up to 20405 conditions per place. [2023-08-27 04:42:05,291 INFO L140 encePairwiseOnDemand]: 572/577 looper letters, 520 selfloop transitions, 5 changer transitions 0/542 dead transitions. [2023-08-27 04:42:05,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 542 transitions, 5554 flow [2023-08-27 04:42:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:42:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:42:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1196 transitions. [2023-08-27 04:42:05,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181975736568457 [2023-08-27 04:42:05,293 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1196 transitions. [2023-08-27 04:42:05,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1196 transitions. [2023-08-27 04:42:05,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:42:05,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1196 transitions. [2023-08-27 04:42:05,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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) [2023-08-27 04:42:05,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 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) [2023-08-27 04:42:05,297 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 577.0) internal successors, (2885), 5 states have internal predecessors, (2885), 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) [2023-08-27 04:42:05,297 INFO L175 Difference]: Start difference. First operand has 136 places, 328 transitions, 2888 flow. Second operand 4 states and 1196 transitions. [2023-08-27 04:42:05,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 542 transitions, 5554 flow [2023-08-27 04:42:05,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 542 transitions, 5535 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:42:05,874 INFO L231 Difference]: Finished difference. Result has 135 places, 326 transitions, 2881 flow [2023-08-27 04:42:05,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2881, PETRI_PLACES=135, PETRI_TRANSITIONS=326} [2023-08-27 04:42:05,875 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 55 predicate places. [2023-08-27 04:42:05,875 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 326 transitions, 2881 flow [2023-08-27 04:42:05,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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) [2023-08-27 04:42:05,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:42:05,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:42:05,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 04:42:06,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-27 04:42:06,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:42:06,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:42:06,080 INFO L85 PathProgramCache]: Analyzing trace with hash 760063663, now seen corresponding path program 1 times [2023-08-27 04:42:06,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:42:06,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724858690] [2023-08-27 04:42:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:06,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:42:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:06,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:42:06,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724858690] [2023-08-27 04:42:06,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724858690] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:42:06,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43551982] [2023-08-27 04:42:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:06,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:42:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:42:06,632 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) [2023-08-27 04:42:06,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 04:42:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:06,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 04:42:06,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:42:06,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 04:42:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:06,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:42:06,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2023-08-27 04:42:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43551982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:42:06,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:42:06,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 16 [2023-08-27 04:42:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040582053] [2023-08-27 04:42:06,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:42:06,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 04:42:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:42:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 04:42:07,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-08-27 04:42:07,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 577 [2023-08-27 04:42:07,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 326 transitions, 2881 flow. Second operand has 17 states, 17 states have (on average 198.0) internal successors, (3366), 17 states have internal predecessors, (3366), 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) [2023-08-27 04:42:07,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:42:07,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 577 [2023-08-27 04:42:07,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:42:14,469 INFO L124 PetriNetUnfolderBase]: 41586/68337 cut-off events. [2023-08-27 04:42:14,469 INFO L125 PetriNetUnfolderBase]: For 148877/148877 co-relation queries the response was YES. [2023-08-27 04:42:14,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248056 conditions, 68337 events. 41586/68337 cut-off events. For 148877/148877 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 533989 event pairs, 8891 based on Foata normal form. 304/53050 useless extension candidates. Maximal degree in co-relation 177560. Up to 37886 conditions per place. [2023-08-27 04:42:14,942 INFO L140 encePairwiseOnDemand]: 558/577 looper letters, 724 selfloop transitions, 221 changer transitions 0/946 dead transitions. [2023-08-27 04:42:14,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 946 transitions, 8083 flow [2023-08-27 04:42:14,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 04:42:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 04:42:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4088 transitions. [2023-08-27 04:42:14,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936067783554785 [2023-08-27 04:42:14,948 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4088 transitions. [2023-08-27 04:42:14,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4088 transitions. [2023-08-27 04:42:14,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:42:14,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4088 transitions. [2023-08-27 04:42:14,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 227.11111111111111) internal successors, (4088), 18 states have internal predecessors, (4088), 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) [2023-08-27 04:42:14,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 577.0) internal successors, (10963), 19 states have internal predecessors, (10963), 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) [2023-08-27 04:42:14,960 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 577.0) internal successors, (10963), 19 states have internal predecessors, (10963), 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) [2023-08-27 04:42:14,960 INFO L175 Difference]: Start difference. First operand has 135 places, 326 transitions, 2881 flow. Second operand 18 states and 4088 transitions. [2023-08-27 04:42:14,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 946 transitions, 8083 flow [2023-08-27 04:42:16,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 946 transitions, 8071 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:42:16,154 INFO L231 Difference]: Finished difference. Result has 159 places, 434 transitions, 4771 flow [2023-08-27 04:42:16,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4771, PETRI_PLACES=159, PETRI_TRANSITIONS=434} [2023-08-27 04:42:16,154 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 79 predicate places. [2023-08-27 04:42:16,154 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 434 transitions, 4771 flow [2023-08-27 04:42:16,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 198.0) internal successors, (3366), 17 states have internal predecessors, (3366), 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) [2023-08-27 04:42:16,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:42:16,155 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:42:16,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 04:42:16,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:42:16,358 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:42:16,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:42:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash 760063698, now seen corresponding path program 1 times [2023-08-27 04:42:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:42:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590110781] [2023-08-27 04:42:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:16,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:42:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:16,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:42:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590110781] [2023-08-27 04:42:16,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590110781] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:42:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943129608] [2023-08-27 04:42:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:16,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:42:16,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:42:16,566 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) [2023-08-27 04:42:16,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 04:42:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:16,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 04:42:16,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:42:16,696 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 04:42:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:16,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:42:16,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-08-27 04:42:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943129608] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:42:16,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:42:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2023-08-27 04:42:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264490325] [2023-08-27 04:42:16,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:42:16,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 04:42:16,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:42:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 04:42:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-27 04:42:16,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 577 [2023-08-27 04:42:16,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 434 transitions, 4771 flow. Second operand has 13 states, 13 states have (on average 216.6153846153846) internal successors, (2816), 13 states have internal predecessors, (2816), 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) [2023-08-27 04:42:16,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:42:16,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 577 [2023-08-27 04:42:16,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:42:25,056 INFO L124 PetriNetUnfolderBase]: 41169/67800 cut-off events. [2023-08-27 04:42:25,056 INFO L125 PetriNetUnfolderBase]: For 196403/196403 co-relation queries the response was YES. [2023-08-27 04:42:25,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261338 conditions, 67800 events. 41169/67800 cut-off events. For 196403/196403 co-relation queries the response was YES. Maximal size of possible extension queue 1281. Compared 533269 event pairs, 6350 based on Foata normal form. 292/52559 useless extension candidates. Maximal degree in co-relation 256018. Up to 39216 conditions per place. [2023-08-27 04:42:25,589 INFO L140 encePairwiseOnDemand]: 565/577 looper letters, 660 selfloop transitions, 103 changer transitions 0/764 dead transitions. [2023-08-27 04:42:25,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 764 transitions, 8418 flow [2023-08-27 04:42:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 04:42:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 04:42:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2012 transitions. [2023-08-27 04:42:25,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358752166377816 [2023-08-27 04:42:25,593 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2012 transitions. [2023-08-27 04:42:25,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2012 transitions. [2023-08-27 04:42:25,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:42:25,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2012 transitions. [2023-08-27 04:42:25,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 251.5) internal successors, (2012), 8 states have internal predecessors, (2012), 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) [2023-08-27 04:42:25,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 577.0) internal successors, (5193), 9 states have internal predecessors, (5193), 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) [2023-08-27 04:42:25,599 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 577.0) internal successors, (5193), 9 states have internal predecessors, (5193), 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) [2023-08-27 04:42:25,599 INFO L175 Difference]: Start difference. First operand has 159 places, 434 transitions, 4771 flow. Second operand 8 states and 2012 transitions. [2023-08-27 04:42:25,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 764 transitions, 8418 flow [2023-08-27 04:42:27,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 764 transitions, 8081 flow, removed 139 selfloop flow, removed 4 redundant places. [2023-08-27 04:42:27,455 INFO L231 Difference]: Finished difference. Result has 163 places, 438 transitions, 4792 flow [2023-08-27 04:42:27,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4792, PETRI_PLACES=163, PETRI_TRANSITIONS=438} [2023-08-27 04:42:27,456 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 83 predicate places. [2023-08-27 04:42:27,456 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 438 transitions, 4792 flow [2023-08-27 04:42:27,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 216.6153846153846) internal successors, (2816), 13 states have internal predecessors, (2816), 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) [2023-08-27 04:42:27,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:42:27,457 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:42:27,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 04:42:27,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:42:27,660 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:42:27,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:42:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1190736210, now seen corresponding path program 1 times [2023-08-27 04:42:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:42:27,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367988690] [2023-08-27 04:42:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:27,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:42:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:28,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:42:28,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367988690] [2023-08-27 04:42:28,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367988690] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:42:28,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133467737] [2023-08-27 04:42:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:28,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:42:28,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:42:28,177 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) [2023-08-27 04:42:28,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 04:42:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:28,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 04:42:28,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:42:28,309 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 04:42:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:28,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:42:28,377 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2023-08-27 04:42:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:28,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133467737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:42:28,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:42:28,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 15 [2023-08-27 04:42:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406537866] [2023-08-27 04:42:28,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:42:28,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 04:42:28,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:42:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 04:42:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-27 04:42:28,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 577 [2023-08-27 04:42:28,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 438 transitions, 4792 flow. Second operand has 16 states, 16 states have (on average 198.125) internal successors, (3170), 16 states have internal predecessors, (3170), 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) [2023-08-27 04:42:28,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:42:28,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 577 [2023-08-27 04:42:28,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:42:37,860 INFO L124 PetriNetUnfolderBase]: 44683/73282 cut-off events. [2023-08-27 04:42:37,860 INFO L125 PetriNetUnfolderBase]: For 243245/243245 co-relation queries the response was YES. [2023-08-27 04:42:38,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287938 conditions, 73282 events. 44683/73282 cut-off events. For 243245/243245 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 575469 event pairs, 8616 based on Foata normal form. 306/56908 useless extension candidates. Maximal degree in co-relation 282524. Up to 39863 conditions per place. [2023-08-27 04:42:38,453 INFO L140 encePairwiseOnDemand]: 559/577 looper letters, 789 selfloop transitions, 230 changer transitions 0/1020 dead transitions. [2023-08-27 04:42:38,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 1020 transitions, 10771 flow [2023-08-27 04:42:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 04:42:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 04:42:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3637 transitions. [2023-08-27 04:42:38,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39395580589254764 [2023-08-27 04:42:38,460 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3637 transitions. [2023-08-27 04:42:38,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3637 transitions. [2023-08-27 04:42:38,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:42:38,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3637 transitions. [2023-08-27 04:42:38,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 227.3125) internal successors, (3637), 16 states have internal predecessors, (3637), 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) [2023-08-27 04:42:38,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 577.0) internal successors, (9809), 17 states have internal predecessors, (9809), 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) [2023-08-27 04:42:38,477 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 577.0) internal successors, (9809), 17 states have internal predecessors, (9809), 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) [2023-08-27 04:42:38,477 INFO L175 Difference]: Start difference. First operand has 163 places, 438 transitions, 4792 flow. Second operand 16 states and 3637 transitions. [2023-08-27 04:42:38,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 1020 transitions, 10771 flow [2023-08-27 04:42:40,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1020 transitions, 10655 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 04:42:40,834 INFO L231 Difference]: Finished difference. Result has 182 places, 548 transitions, 6982 flow [2023-08-27 04:42:40,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=4737, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6982, PETRI_PLACES=182, PETRI_TRANSITIONS=548} [2023-08-27 04:42:40,835 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 102 predicate places. [2023-08-27 04:42:40,835 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 548 transitions, 6982 flow [2023-08-27 04:42:40,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 198.125) internal successors, (3170), 16 states have internal predecessors, (3170), 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) [2023-08-27 04:42:40,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:42:40,836 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:42:40,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 04:42:41,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 04:42:41,040 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:42:41,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:42:41,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1190736245, now seen corresponding path program 1 times [2023-08-27 04:42:41,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:42:41,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784958651] [2023-08-27 04:42:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:41,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:42:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:41,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:42:41,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784958651] [2023-08-27 04:42:41,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784958651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:42:41,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117444446] [2023-08-27 04:42:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:41,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:42:41,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:42:41,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:42:41,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 04:42:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:41,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 04:42:41,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:42:41,427 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 04:42:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:41,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:42:41,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-08-27 04:42:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117444446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:42:41,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:42:41,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-27 04:42:41,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706207830] [2023-08-27 04:42:41,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:42:41,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 04:42:41,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:42:41,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 04:42:41,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-27 04:42:41,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 577 [2023-08-27 04:42:41,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 548 transitions, 6982 flow. Second operand has 11 states, 11 states have (on average 217.0) internal successors, (2387), 11 states have internal predecessors, (2387), 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) [2023-08-27 04:42:41,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:42:41,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 577 [2023-08-27 04:42:41,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:42:51,881 INFO L124 PetriNetUnfolderBase]: 44372/72851 cut-off events. [2023-08-27 04:42:51,881 INFO L125 PetriNetUnfolderBase]: For 302064/302064 co-relation queries the response was YES. [2023-08-27 04:42:52,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303181 conditions, 72851 events. 44372/72851 cut-off events. For 302064/302064 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 576710 event pairs, 9470 based on Foata normal form. 288/56702 useless extension candidates. Maximal degree in co-relation 297780. Up to 42908 conditions per place. [2023-08-27 04:42:52,612 INFO L140 encePairwiseOnDemand]: 567/577 looper letters, 754 selfloop transitions, 92 changer transitions 0/847 dead transitions. [2023-08-27 04:42:52,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 847 transitions, 11249 flow [2023-08-27 04:42:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:42:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:42:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1509 transitions. [2023-08-27 04:42:52,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358752166377816 [2023-08-27 04:42:52,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1509 transitions. [2023-08-27 04:42:52,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1509 transitions. [2023-08-27 04:42:52,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:42:52,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1509 transitions. [2023-08-27 04:42:52,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.5) internal successors, (1509), 6 states have internal predecessors, (1509), 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) [2023-08-27 04:42:52,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 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) [2023-08-27 04:42:52,617 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 577.0) internal successors, (4039), 7 states have internal predecessors, (4039), 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) [2023-08-27 04:42:52,617 INFO L175 Difference]: Start difference. First operand has 182 places, 548 transitions, 6982 flow. Second operand 6 states and 1509 transitions. [2023-08-27 04:42:52,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 847 transitions, 11249 flow [2023-08-27 04:42:55,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 847 transitions, 10668 flow, removed 182 selfloop flow, removed 4 redundant places. [2023-08-27 04:42:55,803 INFO L231 Difference]: Finished difference. Result has 184 places, 551 transitions, 6786 flow [2023-08-27 04:42:55,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=6418, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6786, PETRI_PLACES=184, PETRI_TRANSITIONS=551} [2023-08-27 04:42:55,804 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 104 predicate places. [2023-08-27 04:42:55,804 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 551 transitions, 6786 flow [2023-08-27 04:42:55,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 217.0) internal successors, (2387), 11 states have internal predecessors, (2387), 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) [2023-08-27 04:42:55,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:42:55,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:42:55,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 04:42:56,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 04:42:56,008 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:42:56,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:42:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1496103681, now seen corresponding path program 1 times [2023-08-27 04:42:56,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:42:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153048930] [2023-08-27 04:42:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:42:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:42:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:42:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:42:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:42:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153048930] [2023-08-27 04:42:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153048930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:42:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:42:56,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 04:42:56,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183075095] [2023-08-27 04:42:56,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:42:56,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 04:42:56,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:42:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 04:42:56,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 04:42:56,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 577 [2023-08-27 04:42:56,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 551 transitions, 6786 flow. Second operand has 8 states, 8 states have (on average 210.875) internal successors, (1687), 8 states have internal predecessors, (1687), 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) [2023-08-27 04:42:56,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:42:56,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 577 [2023-08-27 04:42:56,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:43:07,677 INFO L124 PetriNetUnfolderBase]: 50281/82667 cut-off events. [2023-08-27 04:43:07,677 INFO L125 PetriNetUnfolderBase]: For 415394/415394 co-relation queries the response was YES. [2023-08-27 04:43:08,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365567 conditions, 82667 events. 50281/82667 cut-off events. For 415394/415394 co-relation queries the response was YES. Maximal size of possible extension queue 1483. Compared 667821 event pairs, 18203 based on Foata normal form. 0/64086 useless extension candidates. Maximal degree in co-relation 360148. Up to 59273 conditions per place. [2023-08-27 04:43:08,489 INFO L140 encePairwiseOnDemand]: 561/577 looper letters, 551 selfloop transitions, 423 changer transitions 0/975 dead transitions. [2023-08-27 04:43:08,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 975 transitions, 13827 flow [2023-08-27 04:43:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 04:43:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 04:43:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2020 transitions. [2023-08-27 04:43:08,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3889851723473907 [2023-08-27 04:43:08,491 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2020 transitions. [2023-08-27 04:43:08,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2020 transitions. [2023-08-27 04:43:08,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:43:08,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2020 transitions. [2023-08-27 04:43:08,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 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) [2023-08-27 04:43:08,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 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) [2023-08-27 04:43:08,496 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 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) [2023-08-27 04:43:08,496 INFO L175 Difference]: Start difference. First operand has 184 places, 551 transitions, 6786 flow. Second operand 9 states and 2020 transitions. [2023-08-27 04:43:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 975 transitions, 13827 flow [2023-08-27 04:43:13,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 975 transitions, 13580 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-27 04:43:13,231 INFO L231 Difference]: Finished difference. Result has 194 places, 862 transitions, 12929 flow [2023-08-27 04:43:13,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=6643, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12929, PETRI_PLACES=194, PETRI_TRANSITIONS=862} [2023-08-27 04:43:13,232 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 114 predicate places. [2023-08-27 04:43:13,233 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 862 transitions, 12929 flow [2023-08-27 04:43:13,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 210.875) internal successors, (1687), 8 states have internal predecessors, (1687), 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) [2023-08-27 04:43:13,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:43:13,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:43:13,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 04:43:13,233 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:43:13,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:43:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1496103575, now seen corresponding path program 1 times [2023-08-27 04:43:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:43:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194546083] [2023-08-27 04:43:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:43:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:43:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:43:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:43:13,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:43:13,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194546083] [2023-08-27 04:43:13,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194546083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:43:13,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:43:13,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 04:43:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388018901] [2023-08-27 04:43:13,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:43:13,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 04:43:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:43:13,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 04:43:13,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 04:43:13,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 577 [2023-08-27 04:43:13,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 862 transitions, 12929 flow. Second operand has 8 states, 8 states have (on average 210.875) internal successors, (1687), 8 states have internal predecessors, (1687), 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) [2023-08-27 04:43:13,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:43:13,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 577 [2023-08-27 04:43:13,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:43:27,516 INFO L124 PetriNetUnfolderBase]: 50292/83180 cut-off events. [2023-08-27 04:43:27,517 INFO L125 PetriNetUnfolderBase]: For 463976/463976 co-relation queries the response was YES. [2023-08-27 04:43:28,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381726 conditions, 83180 events. 50292/83180 cut-off events. For 463976/463976 co-relation queries the response was YES. Maximal size of possible extension queue 1479. Compared 677215 event pairs, 22979 based on Foata normal form. 0/67189 useless extension candidates. Maximal degree in co-relation 376459. Up to 62062 conditions per place. [2023-08-27 04:43:28,434 INFO L140 encePairwiseOnDemand]: 562/577 looper letters, 437 selfloop transitions, 586 changer transitions 0/1024 dead transitions. [2023-08-27 04:43:28,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1024 transitions, 16670 flow [2023-08-27 04:43:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 04:43:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 04:43:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2016 transitions. [2023-08-27 04:43:28,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882149046793761 [2023-08-27 04:43:28,437 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2016 transitions. [2023-08-27 04:43:28,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2016 transitions. [2023-08-27 04:43:28,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:43:28,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2016 transitions. [2023-08-27 04:43:28,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 224.0) internal successors, (2016), 9 states have internal predecessors, (2016), 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) [2023-08-27 04:43:28,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 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) [2023-08-27 04:43:28,441 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 577.0) internal successors, (5770), 10 states have internal predecessors, (5770), 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) [2023-08-27 04:43:28,441 INFO L175 Difference]: Start difference. First operand has 194 places, 862 transitions, 12929 flow. Second operand 9 states and 2016 transitions. [2023-08-27 04:43:28,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1024 transitions, 16670 flow [2023-08-27 04:43:32,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 1024 transitions, 16620 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-27 04:43:32,970 INFO L231 Difference]: Finished difference. Result has 202 places, 911 transitions, 15418 flow [2023-08-27 04:43:32,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=12881, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15418, PETRI_PLACES=202, PETRI_TRANSITIONS=911} [2023-08-27 04:43:32,971 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 122 predicate places. [2023-08-27 04:43:32,971 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 911 transitions, 15418 flow [2023-08-27 04:43:32,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 210.875) internal successors, (1687), 8 states have internal predecessors, (1687), 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) [2023-08-27 04:43:32,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:43:32,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:43:32,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 04:43:32,972 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:43:32,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:43:32,972 INFO L85 PathProgramCache]: Analyzing trace with hash -433081268, now seen corresponding path program 1 times [2023-08-27 04:43:32,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:43:32,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548222854] [2023-08-27 04:43:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:43:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:43:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:43:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:43:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:43:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548222854] [2023-08-27 04:43:33,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548222854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:43:33,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:43:33,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 04:43:33,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404205139] [2023-08-27 04:43:33,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:43:33,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 04:43:33,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:43:33,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 04:43:33,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-27 04:43:33,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 577 [2023-08-27 04:43:33,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 911 transitions, 15418 flow. Second operand has 9 states, 9 states have (on average 209.77777777777777) internal successors, (1888), 9 states have internal predecessors, (1888), 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) [2023-08-27 04:43:33,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:43:33,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 577 [2023-08-27 04:43:33,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:44:09,351 INFO L124 PetriNetUnfolderBase]: 109700/183388 cut-off events. [2023-08-27 04:44:09,352 INFO L125 PetriNetUnfolderBase]: For 1113176/1113176 co-relation queries the response was YES. [2023-08-27 04:44:11,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864883 conditions, 183388 events. 109700/183388 cut-off events. For 1113176/1113176 co-relation queries the response was YES. Maximal size of possible extension queue 3387. Compared 1696019 event pairs, 22702 based on Foata normal form. 474/147948 useless extension candidates. Maximal degree in co-relation 854986. Up to 58236 conditions per place. [2023-08-27 04:44:12,029 INFO L140 encePairwiseOnDemand]: 561/577 looper letters, 2275 selfloop transitions, 429 changer transitions 0/2705 dead transitions. [2023-08-27 04:44:12,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 2705 transitions, 47252 flow [2023-08-27 04:44:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 04:44:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 04:44:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3252 transitions. [2023-08-27 04:44:12,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335421943740835 [2023-08-27 04:44:12,032 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3252 transitions. [2023-08-27 04:44:12,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3252 transitions. [2023-08-27 04:44:12,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:44:12,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3252 transitions. [2023-08-27 04:44:12,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 250.15384615384616) internal successors, (3252), 13 states have internal predecessors, (3252), 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) [2023-08-27 04:44:12,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 577.0) internal successors, (8078), 14 states have internal predecessors, (8078), 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) [2023-08-27 04:44:12,039 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 577.0) internal successors, (8078), 14 states have internal predecessors, (8078), 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) [2023-08-27 04:44:12,039 INFO L175 Difference]: Start difference. First operand has 202 places, 911 transitions, 15418 flow. Second operand 13 states and 3252 transitions. [2023-08-27 04:44:12,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 2705 transitions, 47252 flow [2023-08-27 04:44:37,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 2705 transitions, 47188 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-27 04:44:37,191 INFO L231 Difference]: Finished difference. Result has 214 places, 1217 transitions, 22821 flow [2023-08-27 04:44:37,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=15386, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=22821, PETRI_PLACES=214, PETRI_TRANSITIONS=1217} [2023-08-27 04:44:37,192 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 134 predicate places. [2023-08-27 04:44:37,192 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 1217 transitions, 22821 flow [2023-08-27 04:44:37,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 209.77777777777777) internal successors, (1888), 9 states have internal predecessors, (1888), 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) [2023-08-27 04:44:37,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:44:37,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:44:37,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 04:44:37,192 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 04:44:37,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:44:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash -51422370, now seen corresponding path program 2 times [2023-08-27 04:44:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:44:37,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400276897] [2023-08-27 04:44:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:44:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:44:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:44:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:44:37,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:44:37,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400276897] [2023-08-27 04:44:37,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400276897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:44:37,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:44:37,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 04:44:37,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857222839] [2023-08-27 04:44:37,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:44:37,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 04:44:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:44:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 04:44:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-27 04:44:37,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 577 [2023-08-27 04:44:37,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 1217 transitions, 22821 flow. Second operand has 9 states, 9 states have (on average 209.77777777777777) internal successors, (1888), 9 states have internal predecessors, (1888), 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) [2023-08-27 04:44:37,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:44:37,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 577 [2023-08-27 04:44:37,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand