/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 -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 [2023-08-26 22:11:08,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:11:08,489 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 [2023-08-26 22:11:08,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:11:08,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:11:08,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:11:08,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:11:08,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:11:08,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:11:08,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:11:08,524 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:11:08,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:11:08,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:11:08,525 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:11:08,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:11:08,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:11:08,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:11:08,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:11:08,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:11:08,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:11:08,526 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:11:08,527 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:11:08,527 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:11:08,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:11:08,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:11:08,528 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:11:08,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:11:08,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:11:08,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:11:08,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:11:08,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:11:08,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:11:08,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:11:08,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:11:08,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:11:08,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:11:08,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:11:08,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:11:08,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:11:08,763 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:11:08,763 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:11:08,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2023-08-26 22:11:09,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:11:09,974 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:11:09,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2023-08-26 22:11:09,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc0748a6/074b20ee77974ef6ad142a0e7c0343b4/FLAG24f3e9f70 [2023-08-26 22:11:09,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc0748a6/074b20ee77974ef6ad142a0e7c0343b4 [2023-08-26 22:11:09,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:11:09,995 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:11:09,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:11:09,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:11:09,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:11:09,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:11:09" (1/1) ... [2023-08-26 22:11:09,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248d58ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:09, skipping insertion in model container [2023-08-26 22:11:09,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:11:09" (1/1) ... [2023-08-26 22:11:10,028 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:11:10,149 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-26 22:11:10,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:11:10,430 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:11:10,442 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-26 22:11:10,453 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-26 22:11:10,454 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-26 22:11:10,466 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile long [805] [2023-08-26 22:11:10,466 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [806] [2023-08-26 22:11:10,466 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile long [807] [2023-08-26 22:11:10,466 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [809] [2023-08-26 22:11:10,467 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [814] [2023-08-26 22:11:10,468 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [815] [2023-08-26 22:11:10,469 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [827] [2023-08-26 22:11:10,470 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [843] [2023-08-26 22:11:10,471 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [899] [2023-08-26 22:11:10,473 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1054] [2023-08-26 22:11:10,479 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1078] [2023-08-26 22:11:10,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:11:10,532 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 22:11:10,537 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:11:10,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10 WrapperNode [2023-08-26 22:11:10,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:11:10,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:11:10,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:11:10,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:11:10,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,594 INFO L138 Inliner]: procedures = 310, calls = 77, calls flagged for inlining = 17, calls inlined = 12, statements flattened = 244 [2023-08-26 22:11:10,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:11:10,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:11:10,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:11:10,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:11:10,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:11:10,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:11:10,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:11:10,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:11:10,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (1/1) ... [2023-08-26 22:11:10,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:11:10,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:11:10,656 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) [2023-08-26 22:11:10,657 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 [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-08-26 22:11:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-08-26 22:11:10,679 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:11:10,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:11:10,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:11:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:11:10,680 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:11:10,773 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:11:10,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:11:11,081 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:11:11,087 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:11:11,087 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-26 22:11:11,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:11:11 BoogieIcfgContainer [2023-08-26 22:11:11,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:11:11,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:11:11,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:11:11,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:11:11,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:11:09" (1/3) ... [2023-08-26 22:11:11,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169c88f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:11:11, skipping insertion in model container [2023-08-26 22:11:11,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:11:10" (2/3) ... [2023-08-26 22:11:11,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169c88f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:11:11, skipping insertion in model container [2023-08-26 22:11:11,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:11:11" (3/3) ... [2023-08-26 22:11:11,093 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2023-08-26 22:11:11,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:11:11,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-26 22:11:11,105 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:11:11,192 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:11:11,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 292 transitions, 600 flow [2023-08-26 22:11:11,331 INFO L124 PetriNetUnfolderBase]: 21/290 cut-off events. [2023-08-26 22:11:11,331 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:11:11,339 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. [2023-08-26 22:11:11,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 292 transitions, 600 flow [2023-08-26 22:11:11,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 280 transitions, 569 flow [2023-08-26 22:11:11,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:11:11,355 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 280 transitions, 569 flow [2023-08-26 22:11:11,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 280 transitions, 569 flow [2023-08-26 22:11:11,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 280 transitions, 569 flow [2023-08-26 22:11:11,406 INFO L124 PetriNetUnfolderBase]: 21/280 cut-off events. [2023-08-26 22:11:11,406 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:11:11,409 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. [2023-08-26 22:11:11,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 35284 [2023-08-26 22:11:16,853 INFO L134 LiptonReduction]: Checked pairs total: 56396 [2023-08-26 22:11:16,853 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-08-26 22:11:16,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:11:16,874 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;@6025acb2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:11:16,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-08-26 22:11:16,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:11:16,880 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-26 22:11:16,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:11:16,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:11:16,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:11:16,882 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)] === [2023-08-26 22:11:16,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:11:16,885 INFO L85 PathProgramCache]: Analyzing trace with hash 18592408, now seen corresponding path program 1 times [2023-08-26 22:11:16,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:11:16,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755457958] [2023-08-26 22:11:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:11:16,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:11:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:11:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:11:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:11:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755457958] [2023-08-26 22:11:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755457958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:11:17,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:11:17,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:11:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371409554] [2023-08-26 22:11:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:11:17,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:11:17,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:11:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:11:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:11:17,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 577 [2023-08-26 22:11:17,122 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) [2023-08-26 22:11:17,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:11:17,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 577 [2023-08-26 22:11:17,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:11:19,311 INFO L124 PetriNetUnfolderBase]: 23635/34765 cut-off events. [2023-08-26 22:11:19,311 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-26 22:11:19,340 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. [2023-08-26 22:11:19,466 INFO L140 encePairwiseOnDemand]: 564/577 looper letters, 117 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-26 22:11:19,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 507 flow [2023-08-26 22:11:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:11:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:11:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2023-08-26 22:11:19,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262853841709995 [2023-08-26 22:11:19,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2023-08-26 22:11:19,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2023-08-26 22:11:19,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:11:19,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2023-08-26 22:11:19,492 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) [2023-08-26 22:11:19,499 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) [2023-08-26 22:11:19,499 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) [2023-08-26 22:11:19,501 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 175 flow. Second operand 3 states and 911 transitions. [2023-08-26 22:11:19,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 507 flow [2023-08-26 22:11:19,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 502 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:11:19,510 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 174 flow [2023-08-26 22:11:19,511 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} [2023-08-26 22:11:19,513 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -4 predicate places. [2023-08-26 22:11:19,513 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 174 flow [2023-08-26 22:11:19,514 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) [2023-08-26 22:11:19,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:11:19,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:11:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:11:19,514 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)] === [2023-08-26 22:11:19,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:11:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash 18589716, now seen corresponding path program 1 times [2023-08-26 22:11:19,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:11:19,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142229170] [2023-08-26 22:11:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:11:19,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:11:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:11:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:11:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:11:19,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142229170] [2023-08-26 22:11:19,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142229170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:11:19,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:11:19,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:11:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200094877] [2023-08-26 22:11:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:11:19,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:11:19,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:11:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:11:19,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:11:19,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 577 [2023-08-26 22:11:19,604 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) [2023-08-26 22:11:19,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:11:19,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 577 [2023-08-26 22:11:19,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:11:22,729 INFO L124 PetriNetUnfolderBase]: 39909/58283 cut-off events. [2023-08-26 22:11:22,729 INFO L125 PetriNetUnfolderBase]: For 3755/3755 co-relation queries the response was YES. [2023-08-26 22:11:22,786 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. [2023-08-26 22:11:22,951 INFO L140 encePairwiseOnDemand]: 571/577 looper letters, 121 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-08-26 22:11:22,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 134 transitions, 551 flow [2023-08-26 22:11:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:11:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:11:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2023-08-26 22:11:22,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210860774119006 [2023-08-26 22:11:22,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 902 transitions. [2023-08-26 22:11:22,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 902 transitions. [2023-08-26 22:11:22,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:11:22,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 902 transitions. [2023-08-26 22:11:22,957 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) [2023-08-26 22:11:22,961 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) [2023-08-26 22:11:22,962 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) [2023-08-26 22:11:22,963 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 174 flow. Second operand 3 states and 902 transitions. [2023-08-26 22:11:22,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 134 transitions, 551 flow [2023-08-26 22:11:22,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 134 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:11:22,973 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 190 flow [2023-08-26 22:11:22,973 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} [2023-08-26 22:11:22,974 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2023-08-26 22:11:22,974 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 190 flow [2023-08-26 22:11:22,974 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) [2023-08-26 22:11:22,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:11:22,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:11:22,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:11:22,975 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)] === [2023-08-26 22:11:22,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:11:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash 576368544, now seen corresponding path program 1 times [2023-08-26 22:11:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:11:22,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699364555] [2023-08-26 22:11:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:11:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:11:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:11:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:11:23,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:11:23,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699364555] [2023-08-26 22:11:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699364555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:11:23,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:11:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:11:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548039375] [2023-08-26 22:11:23,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:11:23,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:11:23,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:11:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:11:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:11:23,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 577 [2023-08-26 22:11:23,334 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) [2023-08-26 22:11:23,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:11:23,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 577 [2023-08-26 22:11:23,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:11:28,128 INFO L124 PetriNetUnfolderBase]: 60999/88406 cut-off events. [2023-08-26 22:11:28,129 INFO L125 PetriNetUnfolderBase]: For 7550/7550 co-relation queries the response was YES. [2023-08-26 22:11:28,207 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. [2023-08-26 22:11:28,437 INFO L140 encePairwiseOnDemand]: 567/577 looper letters, 157 selfloop transitions, 16 changer transitions 0/174 dead transitions. [2023-08-26 22:11:28,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 174 transitions, 741 flow [2023-08-26 22:11:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:11:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:11:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1223 transitions. [2023-08-26 22:11:28,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239168110918544 [2023-08-26 22:11:28,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1223 transitions. [2023-08-26 22:11:28,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1223 transitions. [2023-08-26 22:11:28,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:11:28,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1223 transitions. [2023-08-26 22:11:28,443 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) [2023-08-26 22:11:28,447 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) [2023-08-26 22:11:28,448 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) [2023-08-26 22:11:28,448 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 190 flow. Second operand 5 states and 1223 transitions. [2023-08-26 22:11:28,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 174 transitions, 741 flow [2023-08-26 22:11:28,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 174 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:11:28,453 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 288 flow [2023-08-26 22:11:28,454 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} [2023-08-26 22:11:28,454 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2023-08-26 22:11:28,457 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 288 flow [2023-08-26 22:11:28,458 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) [2023-08-26 22:11:28,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:11:28,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:11:28,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:11:28,459 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)] === [2023-08-26 22:11:28,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:11:28,460 INFO L85 PathProgramCache]: Analyzing trace with hash 576282801, now seen corresponding path program 1 times [2023-08-26 22:11:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:11:28,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290790411] [2023-08-26 22:11:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:11:28,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:11:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:11:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:11:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:11:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290790411] [2023-08-26 22:11:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290790411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:11:28,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:11:28,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:11:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334308959] [2023-08-26 22:11:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:11:28,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:11:28,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:11:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:11:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:11:28,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 577 [2023-08-26 22:11:28,710 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) [2023-08-26 22:11:28,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:11:28,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 577 [2023-08-26 22:11:28,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:11:33,596 INFO L124 PetriNetUnfolderBase]: 60508/87699 cut-off events. [2023-08-26 22:11:33,596 INFO L125 PetriNetUnfolderBase]: For 14383/14383 co-relation queries the response was YES. [2023-08-26 22:11:33,721 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. [2023-08-26 22:11:33,972 INFO L140 encePairwiseOnDemand]: 566/577 looper letters, 167 selfloop transitions, 40 changer transitions 0/208 dead transitions. [2023-08-26 22:11:33,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 208 transitions, 1025 flow [2023-08-26 22:11:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:11:33,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:11:33,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1447 transitions. [2023-08-26 22:11:33,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796649335644137 [2023-08-26 22:11:33,976 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1447 transitions. [2023-08-26 22:11:33,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1447 transitions. [2023-08-26 22:11:33,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:11:33,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1447 transitions. [2023-08-26 22:11:33,979 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) [2023-08-26 22:11:33,982 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) [2023-08-26 22:11:33,984 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) [2023-08-26 22:11:33,984 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 288 flow. Second operand 6 states and 1447 transitions. [2023-08-26 22:11:33,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 208 transitions, 1025 flow [2023-08-26 22:11:33,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 208 transitions, 1025 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:11:33,993 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 546 flow [2023-08-26 22:11:33,994 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} [2023-08-26 22:11:33,994 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 13 predicate places. [2023-08-26 22:11:33,994 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 546 flow [2023-08-26 22:11:33,995 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) [2023-08-26 22:11:33,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:11:33,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:11:33,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:11:33,995 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)] === [2023-08-26 22:11:33,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:11:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1750836467, now seen corresponding path program 1 times [2023-08-26 22:11:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:11:33,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513819736] [2023-08-26 22:11:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:11:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:11:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:11:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:11:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:11:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513819736] [2023-08-26 22:11:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513819736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:11:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:11:34,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 22:11:34,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463907521] [2023-08-26 22:11:34,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:11:34,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 22:11:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:11:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 22:11:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 22:11:34,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 577 [2023-08-26 22:11:34,166 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) [2023-08-26 22:11:34,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:11:34,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 577 [2023-08-26 22:11:34,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:11:44,346 INFO L124 PetriNetUnfolderBase]: 111890/163411 cut-off events. [2023-08-26 22:11:44,346 INFO L125 PetriNetUnfolderBase]: For 30735/30735 co-relation queries the response was YES. [2023-08-26 22:11:44,736 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. [2023-08-26 22:11:45,217 INFO L140 encePairwiseOnDemand]: 558/577 looper letters, 566 selfloop transitions, 64 changer transitions 0/631 dead transitions. [2023-08-26 22:11:45,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 631 transitions, 3346 flow [2023-08-26 22:11:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 22:11:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 22:11:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2512 transitions. [2023-08-26 22:11:45,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43535528596187173 [2023-08-26 22:11:45,223 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2512 transitions. [2023-08-26 22:11:45,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2512 transitions. [2023-08-26 22:11:45,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:11:45,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2512 transitions. [2023-08-26 22:11:45,228 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) [2023-08-26 22:11:45,232 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) [2023-08-26 22:11:45,233 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) [2023-08-26 22:11:45,233 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 546 flow. Second operand 10 states and 2512 transitions. [2023-08-26 22:11:45,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 631 transitions, 3346 flow [2023-08-26 22:11:45,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 631 transitions, 3279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:11:45,257 INFO L231 Difference]: Finished difference. Result has 106 places, 184 transitions, 1121 flow [2023-08-26 22:11:45,257 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} [2023-08-26 22:11:45,257 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 26 predicate places. [2023-08-26 22:11:45,257 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 184 transitions, 1121 flow [2023-08-26 22:11:45,258 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) [2023-08-26 22:11:45,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:11:45,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:11:45,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:11:45,258 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)] === [2023-08-26 22:11:45,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:11:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1750836411, now seen corresponding path program 1 times [2023-08-26 22:11:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:11:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890610301] [2023-08-26 22:11:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:11:45,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:11:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:11:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:11:45,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:11:45,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890610301] [2023-08-26 22:11:45,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890610301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:11:45,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:11:45,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 22:11:45,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099344521] [2023-08-26 22:11:45,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:11:45,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 22:11:45,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:11:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 22:11:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 22:11:45,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 577 [2023-08-26 22:11:45,370 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) [2023-08-26 22:11:45,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:11:45,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 577 [2023-08-26 22:11:45,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:11:56,853 INFO L124 PetriNetUnfolderBase]: 113432/167913 cut-off events. [2023-08-26 22:11:56,853 INFO L125 PetriNetUnfolderBase]: For 109673/109673 co-relation queries the response was YES. [2023-08-26 22:11:57,352 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. [2023-08-26 22:11:57,819 INFO L140 encePairwiseOnDemand]: 558/577 looper letters, 569 selfloop transitions, 79 changer transitions 0/649 dead transitions. [2023-08-26 22:11:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 649 transitions, 3926 flow [2023-08-26 22:11:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 22:11:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 22:11:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2510 transitions. [2023-08-26 22:11:57,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43500866551126516 [2023-08-26 22:11:57,824 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2510 transitions. [2023-08-26 22:11:57,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2510 transitions. [2023-08-26 22:11:57,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:11:57,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2510 transitions. [2023-08-26 22:11:57,827 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) [2023-08-26 22:11:57,832 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) [2023-08-26 22:11:57,833 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) [2023-08-26 22:11:57,833 INFO L175 Difference]: Start difference. First operand has 106 places, 184 transitions, 1121 flow. Second operand 10 states and 2510 transitions. [2023-08-26 22:11:57,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 649 transitions, 3926 flow [2023-08-26 22:11:59,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 649 transitions, 3914 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-26 22:11:59,582 INFO L231 Difference]: Finished difference. Result has 116 places, 203 transitions, 1448 flow [2023-08-26 22:11:59,582 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} [2023-08-26 22:11:59,582 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 36 predicate places. [2023-08-26 22:11:59,583 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 203 transitions, 1448 flow [2023-08-26 22:11:59,583 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) [2023-08-26 22:11:59,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:11:59,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:11:59,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:11:59,584 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)] === [2023-08-26 22:11:59,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:11:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2802960, now seen corresponding path program 1 times [2023-08-26 22:11:59,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:11:59,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806033942] [2023-08-26 22:11:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:11:59,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:11:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:11:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:11:59,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:11:59,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806033942] [2023-08-26 22:11:59,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806033942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:11:59,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:11:59,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 22:11:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082180698] [2023-08-26 22:11:59,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:11:59,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 22:11:59,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:11:59,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 22:11:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-26 22:11:59,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 577 [2023-08-26 22:11:59,697 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) [2023-08-26 22:11:59,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:11:59,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 577 [2023-08-26 22:11:59,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:22,219 INFO L124 PetriNetUnfolderBase]: 200515/299268 cut-off events. [2023-08-26 22:12:22,219 INFO L125 PetriNetUnfolderBase]: For 372320/372320 co-relation queries the response was YES. [2023-08-26 22:12:23,317 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. [2023-08-26 22:12:24,362 INFO L140 encePairwiseOnDemand]: 559/577 looper letters, 937 selfloop transitions, 180 changer transitions 0/1118 dead transitions. [2023-08-26 22:12:24,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1118 transitions, 9353 flow [2023-08-26 22:12:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 22:12:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 22:12:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2491 transitions. [2023-08-26 22:12:24,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4317157712305026 [2023-08-26 22:12:24,367 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2491 transitions. [2023-08-26 22:12:24,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2491 transitions. [2023-08-26 22:12:24,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:24,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2491 transitions. [2023-08-26 22:12:24,371 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) [2023-08-26 22:12:24,375 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) [2023-08-26 22:12:24,376 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) [2023-08-26 22:12:24,376 INFO L175 Difference]: Start difference. First operand has 116 places, 203 transitions, 1448 flow. Second operand 10 states and 2491 transitions. [2023-08-26 22:12:24,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 1118 transitions, 9353 flow [2023-08-26 22:12:25,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 1118 transitions, 9209 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-08-26 22:12:25,556 INFO L231 Difference]: Finished difference. Result has 126 places, 426 transitions, 4005 flow [2023-08-26 22:12:25,556 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} [2023-08-26 22:12:25,557 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 46 predicate places. [2023-08-26 22:12:25,557 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 426 transitions, 4005 flow [2023-08-26 22:12:25,557 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) [2023-08-26 22:12:25,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:25,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:12:25,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:12:25,558 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)] === [2023-08-26 22:12:25,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:25,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2803082, now seen corresponding path program 1 times [2023-08-26 22:12:25,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:25,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791865110] [2023-08-26 22:12:25,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:25,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:25,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:25,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791865110] [2023-08-26 22:12:25,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791865110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:25,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:25,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 22:12:25,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188160832] [2023-08-26 22:12:25,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:25,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 22:12:25,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 22:12:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-26 22:12:25,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 577 [2023-08-26 22:12:25,681 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) [2023-08-26 22:12:25,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:25,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 577 [2023-08-26 22:12:25,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand