/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:16:47,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:16:47,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:16:47,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:16:47,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:16:47,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:16:47,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:16:47,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:16:47,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:16:47,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:16:47,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:16:47,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:16:47,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:16:47,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:16:47,555 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:16:47,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:16:47,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:16:47,555 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:16:47,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:16:47,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:16:47,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:16:47,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:16:47,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:16:47,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:16:47,558 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:16:47,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:16:47,558 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:16:47,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:16:47,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:16:47,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:16:47,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:16:47,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:16:47,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:16:47,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:16:47,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:16:47,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:16:47,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:16:47,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:16:47,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:16:47,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:16:47,562 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:16:47,562 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:16:47,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:16:47,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:16:47,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:16:47,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:16:47,806 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:16:47,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i [2023-08-04 04:16:48,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:16:49,211 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:16:49,211 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i [2023-08-04 04:16:49,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291d6955d/ffe6cc78563f4fa68f4c9a90432b8b7c/FLAG93332107b [2023-08-04 04:16:49,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291d6955d/ffe6cc78563f4fa68f4c9a90432b8b7c [2023-08-04 04:16:49,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:16:49,238 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:16:49,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:16:49,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:16:49,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:16:49,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2810968a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49, skipping insertion in model container [2023-08-04 04:16:49,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,301 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:16:49,574 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i[30534,30547] [2023-08-04 04:16:49,579 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i[30928,30941] [2023-08-04 04:16:49,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:16:49,600 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:16:49,619 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-04 04:16:49,621 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-04 04:16:49,632 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [689] [2023-08-04 04:16:49,633 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [700] [2023-08-04 04:16:49,634 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [701] [2023-08-04 04:16:49,634 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: inline unsigned [702] [2023-08-04 04:16:49,634 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned [703] [2023-08-04 04:16:49,636 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i[30534,30547] [2023-08-04 04:16:49,636 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: inline unsigned [716] [2023-08-04 04:16:49,637 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned [717] [2023-08-04 04:16:49,638 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i[30928,30941] [2023-08-04 04:16:49,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:16:49,679 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:16:49,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49 WrapperNode [2023-08-04 04:16:49,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:16:49,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:16:49,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:16:49,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:16:49,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,743 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 138 [2023-08-04 04:16:49,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:16:49,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:16:49,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:16:49,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:16:49,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:16:49,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:16:49,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:16:49,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:16:49,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (1/1) ... [2023-08-04 04:16:49,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:16:49,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:16:49,822 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) [2023-08-04 04:16:49,849 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 [2023-08-04 04:16:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-04 04:16:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-04 04:16:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:16:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:16:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:16:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:16:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:16:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:16:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:16:49,866 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:16:49,993 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:16:49,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:16:50,224 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:16:50,321 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:16:50,321 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-04 04:16:50,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:16:50 BoogieIcfgContainer [2023-08-04 04:16:50,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:16:50,325 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:16:50,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:16:50,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:16:50,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:16:49" (1/3) ... [2023-08-04 04:16:50,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2636a50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:16:50, skipping insertion in model container [2023-08-04 04:16:50,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:49" (2/3) ... [2023-08-04 04:16:50,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2636a50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:16:50, skipping insertion in model container [2023-08-04 04:16:50,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:16:50" (3/3) ... [2023-08-04 04:16:50,330 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_03_incdec_bound2.i [2023-08-04 04:16:50,338 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:16:50,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:16:50,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 04:16:50,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:16:50,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:16:50,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:50,526 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-04 04:16:50,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:50,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 7/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-04 04:16:50,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:50,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:50,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:16:50,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:50,555 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:50,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:50,578 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-04 04:16:50,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:50,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 7/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-04 04:16:50,580 INFO L119 LiptonReduction]: Number of co-enabled transitions 1696 [2023-08-04 04:16:55,108 INFO L134 LiptonReduction]: Checked pairs total: 1628 [2023-08-04 04:16:55,108 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-04 04:16:55,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:16:55,143 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=true, 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;@38e4a7d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:16:55,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:16:55,148 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:16:55,148 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-04 04:16:55,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:55,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:55,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:16:55,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:16:55,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash 17688091, now seen corresponding path program 1 times [2023-08-04 04:16:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:55,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959079912] [2023-08-04 04:16:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:55,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:16:55,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959079912] [2023-08-04 04:16:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959079912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:16:55,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:16:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:16:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648142946] [2023-08-04 04:16:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:16:55,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:16:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:16:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:16:55,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 197 [2023-08-04 04:16:55,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 9 transitions, 23 flow. Second operand has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 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) [2023-08-04 04:16:55,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:55,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 197 [2023-08-04 04:16:55,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:55,430 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-08-04 04:16:55,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:55,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 15 events. 3/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 3 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 20. Up to 15 conditions per place. [2023-08-04 04:16:55,432 INFO L140 encePairwiseOnDemand]: 195/197 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-04 04:16:55,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 31 flow [2023-08-04 04:16:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:16:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:16:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 146 transitions. [2023-08-04 04:16:55,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37055837563451777 [2023-08-04 04:16:55,449 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 146 transitions. [2023-08-04 04:16:55,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 146 transitions. [2023-08-04 04:16:55,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:55,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 146 transitions. [2023-08-04 04:16:55,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 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) [2023-08-04 04:16:55,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2023-08-04 04:16:55,465 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2023-08-04 04:16:55,466 INFO L175 Difference]: Start difference. First operand has 12 places, 9 transitions, 23 flow. Second operand 2 states and 146 transitions. [2023-08-04 04:16:55,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 31 flow [2023-08-04 04:16:55,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:16:55,470 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-04 04:16:55,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-04 04:16:55,475 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -1 predicate places. [2023-08-04 04:16:55,475 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-04 04:16:55,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 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) [2023-08-04 04:16:55,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:16:55,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:16:55,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:16:55,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:16:55,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:16:55,479 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:16:55,481 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:16:55,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:55,518 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-04 04:16:55,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:55,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 7/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-04 04:16:55,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:55,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:55,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:16:55,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:55,521 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:55,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 175 flow [2023-08-04 04:16:55,534 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-04 04:16:55,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:55,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 7/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-04 04:16:55,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 1696 [2023-08-04 04:17:00,080 INFO L134 LiptonReduction]: Checked pairs total: 1580 [2023-08-04 04:17:00,081 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-04 04:17:00,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:17:00,084 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=true, 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;@38e4a7d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:17:00,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:17:00,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:17:00,086 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 04:17:00,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:17:00,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:00,087 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:17:00,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:17:00,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1283867800, now seen corresponding path program 1 times [2023-08-04 04:17:00,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:00,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331324807] [2023-08-04 04:17:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:00,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:17:00,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:17:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:17:00,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:17:00,132 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:17:00,133 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:17:00,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:17:00,133 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:17:00,134 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:17:00,134 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:17:00,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:17:00,158 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:17:00,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:00,179 INFO L124 PetriNetUnfolderBase]: 13/164 cut-off events. [2023-08-04 04:17:00,179 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:17:00,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 13/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 473 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2023-08-04 04:17:00,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:00,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:00,182 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:17:00,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:00,182 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:00,199 INFO L124 PetriNetUnfolderBase]: 13/164 cut-off events. [2023-08-04 04:17:00,199 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:17:00,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 13/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 473 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2023-08-04 04:17:00,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 9116 [2023-08-04 04:17:02,549 INFO L134 LiptonReduction]: Checked pairs total: 28995 [2023-08-04 04:17:02,549 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-04 04:17:02,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:17:02,552 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=true, 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;@38e4a7d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:17:02,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 04:17:02,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:17:02,557 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2023-08-04 04:17:02,557 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:17:02,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:02,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:02,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:02,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash 801066504, now seen corresponding path program 1 times [2023-08-04 04:17:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764681255] [2023-08-04 04:17:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:02,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:17:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764681255] [2023-08-04 04:17:02,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764681255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:02,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:17:02,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:17:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38181485] [2023-08-04 04:17:02,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:02,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:17:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:17:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:17:02,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 250 [2023-08-04 04:17:02,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2023-08-04 04:17:02,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:02,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 250 [2023-08-04 04:17:02,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:02,990 INFO L124 PetriNetUnfolderBase]: 1068/1960 cut-off events. [2023-08-04 04:17:02,991 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-04 04:17:02,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3695 conditions, 1960 events. 1068/1960 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11531 event pairs, 389 based on Foata normal form. 96/1722 useless extension candidates. Maximal degree in co-relation 2246. Up to 1516 conditions per place. [2023-08-04 04:17:02,999 INFO L140 encePairwiseOnDemand]: 240/250 looper letters, 48 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-04 04:17:03,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 69 transitions, 257 flow [2023-08-04 04:17:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:17:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:17:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-04 04:17:03,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2023-08-04 04:17:03,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-04 04:17:03,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-04 04:17:03,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:03,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-04 04:17:03,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2023-08-04 04:17:03,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-08-04 04:17:03,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-08-04 04:17:03,015 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 136 flow. Second operand 3 states and 355 transitions. [2023-08-04 04:17:03,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 69 transitions, 257 flow [2023-08-04 04:17:03,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 255 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:17:03,018 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 149 flow [2023-08-04 04:17:03,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-08-04 04:17:03,020 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-04 04:17:03,020 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 149 flow [2023-08-04 04:17:03,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2023-08-04 04:17:03,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:03,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:03,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:17:03,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:03,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1842454365, now seen corresponding path program 1 times [2023-08-04 04:17:03,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:03,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382849993] [2023-08-04 04:17:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:03,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:17:03,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382849993] [2023-08-04 04:17:03,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382849993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:17:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:17:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797644861] [2023-08-04 04:17:03,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:03,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:17:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:17:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:17:03,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 250 [2023-08-04 04:17:03,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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) [2023-08-04 04:17:03,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:03,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 250 [2023-08-04 04:17:03,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:03,699 INFO L124 PetriNetUnfolderBase]: 1528/2768 cut-off events. [2023-08-04 04:17:03,699 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-08-04 04:17:03,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5541 conditions, 2768 events. 1528/2768 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 17117 event pairs, 391 based on Foata normal form. 20/2366 useless extension candidates. Maximal degree in co-relation 4057. Up to 802 conditions per place. [2023-08-04 04:17:03,716 INFO L140 encePairwiseOnDemand]: 242/250 looper letters, 71 selfloop transitions, 10 changer transitions 8/104 dead transitions. [2023-08-04 04:17:03,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 432 flow [2023-08-04 04:17:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:17:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:17:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 649 transitions. [2023-08-04 04:17:03,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43266666666666664 [2023-08-04 04:17:03,719 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 649 transitions. [2023-08-04 04:17:03,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 649 transitions. [2023-08-04 04:17:03,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:03,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 649 transitions. [2023-08-04 04:17:03,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 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) [2023-08-04 04:17:03,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-08-04 04:17:03,725 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-08-04 04:17:03,725 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 149 flow. Second operand 6 states and 649 transitions. [2023-08-04 04:17:03,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 432 flow [2023-08-04 04:17:03,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:17:03,729 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 184 flow [2023-08-04 04:17:03,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-04 04:17:03,732 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2023-08-04 04:17:03,732 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 184 flow [2023-08-04 04:17:03,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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) [2023-08-04 04:17:03,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:03,733 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:03,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:17:03,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:03,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:03,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1322854759, now seen corresponding path program 1 times [2023-08-04 04:17:03,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:03,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219045744] [2023-08-04 04:17:03,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:03,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:17:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219045744] [2023-08-04 04:17:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219045744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:17:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:17:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616524518] [2023-08-04 04:17:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:03,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:17:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:17:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:17:03,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 250 [2023-08-04 04:17:03,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 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) [2023-08-04 04:17:03,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:03,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 250 [2023-08-04 04:17:03,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:04,307 INFO L124 PetriNetUnfolderBase]: 1466/2704 cut-off events. [2023-08-04 04:17:04,307 INFO L125 PetriNetUnfolderBase]: For 799/803 co-relation queries the response was YES. [2023-08-04 04:17:04,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5700 conditions, 2704 events. 1466/2704 cut-off events. For 799/803 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17164 event pairs, 343 based on Foata normal form. 76/2438 useless extension candidates. Maximal degree in co-relation 4075. Up to 863 conditions per place. [2023-08-04 04:17:04,322 INFO L140 encePairwiseOnDemand]: 242/250 looper letters, 63 selfloop transitions, 12 changer transitions 9/100 dead transitions. [2023-08-04 04:17:04,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 456 flow [2023-08-04 04:17:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:17:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:17:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 642 transitions. [2023-08-04 04:17:04,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428 [2023-08-04 04:17:04,325 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 642 transitions. [2023-08-04 04:17:04,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 642 transitions. [2023-08-04 04:17:04,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:04,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 642 transitions. [2023-08-04 04:17:04,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-08-04 04:17:04,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-08-04 04:17:04,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 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) [2023-08-04 04:17:04,330 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 184 flow. Second operand 6 states and 642 transitions. [2023-08-04 04:17:04,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 456 flow [2023-08-04 04:17:04,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:17:04,339 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 231 flow [2023-08-04 04:17:04,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-08-04 04:17:04,341 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-04 04:17:04,341 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 231 flow [2023-08-04 04:17:04,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 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) [2023-08-04 04:17:04,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:04,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:04,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:17:04,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:04,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash 388938004, now seen corresponding path program 1 times [2023-08-04 04:17:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:04,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859233033] [2023-08-04 04:17:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:04,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:17:04,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:04,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859233033] [2023-08-04 04:17:04,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859233033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:04,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:17:04,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:17:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15842657] [2023-08-04 04:17:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:04,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:17:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:17:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:17:04,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 250 [2023-08-04 04:17:04,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-08-04 04:17:04,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:04,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 250 [2023-08-04 04:17:04,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:04,654 INFO L124 PetriNetUnfolderBase]: 1044/2088 cut-off events. [2023-08-04 04:17:04,654 INFO L125 PetriNetUnfolderBase]: For 485/516 co-relation queries the response was YES. [2023-08-04 04:17:04,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4355 conditions, 2088 events. 1044/2088 cut-off events. For 485/516 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13969 event pairs, 733 based on Foata normal form. 40/1864 useless extension candidates. Maximal degree in co-relation 2661. Up to 1313 conditions per place. [2023-08-04 04:17:04,665 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 37 selfloop transitions, 2 changer transitions 2/69 dead transitions. [2023-08-04 04:17:04,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 333 flow [2023-08-04 04:17:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:17:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:17:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-08-04 04:17:04,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-04 04:17:04,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-08-04 04:17:04,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-08-04 04:17:04,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:04,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-08-04 04:17:04,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2023-08-04 04:17:04,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-08-04 04:17:04,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-08-04 04:17:04,671 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 231 flow. Second operand 3 states and 350 transitions. [2023-08-04 04:17:04,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 333 flow [2023-08-04 04:17:04,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 329 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 04:17:04,676 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 233 flow [2023-08-04 04:17:04,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2023-08-04 04:17:04,678 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-08-04 04:17:04,679 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 233 flow [2023-08-04 04:17:04,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-08-04 04:17:04,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:04,679 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:04,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:17:04,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:04,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash 796317457, now seen corresponding path program 1 times [2023-08-04 04:17:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:04,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166790585] [2023-08-04 04:17:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:04,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:17:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:04,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166790585] [2023-08-04 04:17:04,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166790585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:04,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:17:04,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:17:04,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937252994] [2023-08-04 04:17:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:17:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:17:04,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:17:04,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 250 [2023-08-04 04:17:04,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-08-04 04:17:04,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:04,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 250 [2023-08-04 04:17:04,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:04,944 INFO L124 PetriNetUnfolderBase]: 1028/2026 cut-off events. [2023-08-04 04:17:04,944 INFO L125 PetriNetUnfolderBase]: For 734/738 co-relation queries the response was YES. [2023-08-04 04:17:04,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 2026 events. 1028/2026 cut-off events. For 734/738 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13135 event pairs, 432 based on Foata normal form. 40/1830 useless extension candidates. Maximal degree in co-relation 3984. Up to 1640 conditions per place. [2023-08-04 04:17:04,955 INFO L140 encePairwiseOnDemand]: 245/250 looper letters, 27 selfloop transitions, 2 changer transitions 18/64 dead transitions. [2023-08-04 04:17:04,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 330 flow [2023-08-04 04:17:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:17:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:17:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-04 04:17:04,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46266666666666667 [2023-08-04 04:17:04,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-04 04:17:04,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-04 04:17:04,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:04,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-04 04:17:04,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2023-08-04 04:17:04,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-08-04 04:17:04,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-08-04 04:17:04,960 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 233 flow. Second operand 3 states and 347 transitions. [2023-08-04 04:17:04,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 330 flow [2023-08-04 04:17:04,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:17:04,968 INFO L231 Difference]: Finished difference. Result has 69 places, 40 transitions, 191 flow [2023-08-04 04:17:04,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=69, PETRI_TRANSITIONS=40} [2023-08-04 04:17:04,969 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-04 04:17:04,969 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 40 transitions, 191 flow [2023-08-04 04:17:04,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-08-04 04:17:04,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:04,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:17:04,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:04,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1374531212, now seen corresponding path program 1 times [2023-08-04 04:17:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873073848] [2023-08-04 04:17:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:17:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873073848] [2023-08-04 04:17:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873073848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:05,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:17:05,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:17:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945291206] [2023-08-04 04:17:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:05,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:17:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:17:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:17:05,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 250 [2023-08-04 04:17:05,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 40 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2023-08-04 04:17:05,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:05,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 250 [2023-08-04 04:17:05,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:05,509 INFO L124 PetriNetUnfolderBase]: 1285/2419 cut-off events. [2023-08-04 04:17:05,509 INFO L125 PetriNetUnfolderBase]: For 2096/2136 co-relation queries the response was YES. [2023-08-04 04:17:05,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5857 conditions, 2419 events. 1285/2419 cut-off events. For 2096/2136 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15468 event pairs, 354 based on Foata normal form. 76/2262 useless extension candidates. Maximal degree in co-relation 5651. Up to 1288 conditions per place. [2023-08-04 04:17:05,523 INFO L140 encePairwiseOnDemand]: 241/250 looper letters, 52 selfloop transitions, 15 changer transitions 2/78 dead transitions. [2023-08-04 04:17:05,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 459 flow [2023-08-04 04:17:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:17:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:17:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 698 transitions. [2023-08-04 04:17:05,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39885714285714285 [2023-08-04 04:17:05,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 698 transitions. [2023-08-04 04:17:05,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 698 transitions. [2023-08-04 04:17:05,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:05,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 698 transitions. [2023-08-04 04:17:05,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 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) [2023-08-04 04:17:05,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 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) [2023-08-04 04:17:05,531 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 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) [2023-08-04 04:17:05,531 INFO L175 Difference]: Start difference. First operand has 69 places, 40 transitions, 191 flow. Second operand 7 states and 698 transitions. [2023-08-04 04:17:05,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 459 flow [2023-08-04 04:17:05,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 448 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 04:17:05,539 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 269 flow [2023-08-04 04:17:05,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-08-04 04:17:05,541 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-04 04:17:05,542 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 269 flow [2023-08-04 04:17:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2023-08-04 04:17:05,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:05,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:05,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:17:05,543 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:05,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:05,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1507740856, now seen corresponding path program 2 times [2023-08-04 04:17:05,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:05,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522875452] [2023-08-04 04:17:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:05,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:17:05,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:05,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522875452] [2023-08-04 04:17:05,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522875452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:05,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:17:05,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:17:05,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480148934] [2023-08-04 04:17:05,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:05,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:17:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:05,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:17:05,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:17:05,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 250 [2023-08-04 04:17:05,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2023-08-04 04:17:05,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:05,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 250 [2023-08-04 04:17:05,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:06,120 INFO L124 PetriNetUnfolderBase]: 1392/2678 cut-off events. [2023-08-04 04:17:06,120 INFO L125 PetriNetUnfolderBase]: For 3597/3629 co-relation queries the response was YES. [2023-08-04 04:17:06,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6936 conditions, 2678 events. 1392/2678 cut-off events. For 3597/3629 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18016 event pairs, 502 based on Foata normal form. 68/2486 useless extension candidates. Maximal degree in co-relation 6249. Up to 1285 conditions per place. [2023-08-04 04:17:06,135 INFO L140 encePairwiseOnDemand]: 241/250 looper letters, 53 selfloop transitions, 18 changer transitions 4/84 dead transitions. [2023-08-04 04:17:06,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 564 flow [2023-08-04 04:17:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:17:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:17:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 698 transitions. [2023-08-04 04:17:06,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39885714285714285 [2023-08-04 04:17:06,138 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 698 transitions. [2023-08-04 04:17:06,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 698 transitions. [2023-08-04 04:17:06,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:06,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 698 transitions. [2023-08-04 04:17:06,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 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) [2023-08-04 04:17:06,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 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) [2023-08-04 04:17:06,143 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 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) [2023-08-04 04:17:06,143 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 269 flow. Second operand 7 states and 698 transitions. [2023-08-04 04:17:06,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 564 flow [2023-08-04 04:17:06,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 528 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-04 04:17:06,154 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 351 flow [2023-08-04 04:17:06,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-08-04 04:17:06,155 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-04 04:17:06,155 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 351 flow [2023-08-04 04:17:06,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2023-08-04 04:17:06,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:06,155 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:17:06,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:06,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash 219865660, now seen corresponding path program 3 times [2023-08-04 04:17:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810603670] [2023-08-04 04:17:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:06,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:17:06,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810603670] [2023-08-04 04:17:06,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810603670] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:17:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376513247] [2023-08-04 04:17:06,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 04:17:06,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:17:06,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:17:06,277 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) [2023-08-04 04:17:06,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:17:06,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-04 04:17:06,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:17:06,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-04 04:17:06,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:17:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:17:06,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:17:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:17:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376513247] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-04 04:17:06,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:17:06,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 12 [2023-08-04 04:17:06,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577295197] [2023-08-04 04:17:06,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:06,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:17:06,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:06,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:17:06,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-04 04:17:06,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 250 [2023-08-04 04:17:06,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2023-08-04 04:17:06,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:06,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 250 [2023-08-04 04:17:06,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:06,720 INFO L124 PetriNetUnfolderBase]: 662/1666 cut-off events. [2023-08-04 04:17:06,720 INFO L125 PetriNetUnfolderBase]: For 2474/2494 co-relation queries the response was YES. [2023-08-04 04:17:06,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1666 events. 662/1666 cut-off events. For 2474/2494 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12462 event pairs, 133 based on Foata normal form. 92/1569 useless extension candidates. Maximal degree in co-relation 3171. Up to 855 conditions per place. [2023-08-04 04:17:06,729 INFO L140 encePairwiseOnDemand]: 240/250 looper letters, 19 selfloop transitions, 12 changer transitions 22/70 dead transitions. [2023-08-04 04:17:06,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 479 flow [2023-08-04 04:17:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:17:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:17:06,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2023-08-04 04:17:06,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2023-08-04 04:17:06,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2023-08-04 04:17:06,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2023-08-04 04:17:06,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:06,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2023-08-04 04:17:06,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2023-08-04 04:17:06,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 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) [2023-08-04 04:17:06,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 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) [2023-08-04 04:17:06,734 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 351 flow. Second operand 4 states and 445 transitions. [2023-08-04 04:17:06,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 479 flow [2023-08-04 04:17:06,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 454 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 04:17:06,742 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 230 flow [2023-08-04 04:17:06,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2023-08-04 04:17:06,742 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2023-08-04 04:17:06,742 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 230 flow [2023-08-04 04:17:06,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2023-08-04 04:17:06,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:06,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:06,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:17:06,949 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 [2023-08-04 04:17:06,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:06,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:06,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1813062324, now seen corresponding path program 1 times [2023-08-04 04:17:06,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:06,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826699278] [2023-08-04 04:17:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:17:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826699278] [2023-08-04 04:17:07,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826699278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:17:07,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047797366] [2023-08-04 04:17:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:07,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:17:07,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:17:07,080 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) [2023-08-04 04:17:07,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:17:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:07,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 04:17:07,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:17:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:17:07,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:17:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:17:07,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047797366] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:17:07,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:17:07,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-04 04:17:07,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471402399] [2023-08-04 04:17:07,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:17:07,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-04 04:17:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-04 04:17:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-04 04:17:07,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 250 [2023-08-04 04:17:07,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 230 flow. Second operand has 17 states, 17 states have (on average 85.17647058823529) internal successors, (1448), 17 states have internal predecessors, (1448), 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) [2023-08-04 04:17:07,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:07,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 250 [2023-08-04 04:17:07,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:08,329 INFO L124 PetriNetUnfolderBase]: 485/987 cut-off events. [2023-08-04 04:17:08,329 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2023-08-04 04:17:08,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 987 events. 485/987 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5248 event pairs, 65 based on Foata normal form. 24/897 useless extension candidates. Maximal degree in co-relation 2671. Up to 265 conditions per place. [2023-08-04 04:17:08,333 INFO L140 encePairwiseOnDemand]: 239/250 looper letters, 32 selfloop transitions, 6 changer transitions 72/114 dead transitions. [2023-08-04 04:17:08,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 114 transitions, 675 flow [2023-08-04 04:17:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-04 04:17:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-04 04:17:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1251 transitions. [2023-08-04 04:17:08,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35742857142857143 [2023-08-04 04:17:08,338 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1251 transitions. [2023-08-04 04:17:08,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1251 transitions. [2023-08-04 04:17:08,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:08,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1251 transitions. [2023-08-04 04:17:08,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 89.35714285714286) internal successors, (1251), 14 states have internal predecessors, (1251), 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) [2023-08-04 04:17:08,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 250.0) internal successors, (3750), 15 states have internal predecessors, (3750), 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) [2023-08-04 04:17:08,347 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 250.0) internal successors, (3750), 15 states have internal predecessors, (3750), 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) [2023-08-04 04:17:08,347 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 230 flow. Second operand 14 states and 1251 transitions. [2023-08-04 04:17:08,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 114 transitions, 675 flow [2023-08-04 04:17:08,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 636 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-04 04:17:08,353 INFO L231 Difference]: Finished difference. Result has 67 places, 27 transitions, 137 flow [2023-08-04 04:17:08,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=137, PETRI_PLACES=67, PETRI_TRANSITIONS=27} [2023-08-04 04:17:08,355 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-08-04 04:17:08,355 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 27 transitions, 137 flow [2023-08-04 04:17:08,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.17647058823529) internal successors, (1448), 17 states have internal predecessors, (1448), 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) [2023-08-04 04:17:08,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:08,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:08,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 04:17:08,561 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 [2023-08-04 04:17:08,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 04:17:08,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash -465880583, now seen corresponding path program 1 times [2023-08-04 04:17:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:08,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517872482] [2023-08-04 04:17:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:17:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517872482] [2023-08-04 04:17:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517872482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:17:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:17:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134259271] [2023-08-04 04:17:08,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:17:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:17:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:17:08,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 250 [2023-08-04 04:17:08,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 27 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 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) [2023-08-04 04:17:08,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:08,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 250 [2023-08-04 04:17:08,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:08,911 INFO L124 PetriNetUnfolderBase]: 51/149 cut-off events. [2023-08-04 04:17:08,911 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-08-04 04:17:08,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 149 events. 51/149 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 449 event pairs, 0 based on Foata normal form. 8/137 useless extension candidates. Maximal degree in co-relation 412. Up to 70 conditions per place. [2023-08-04 04:17:08,912 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-04 04:17:08,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 39 transitions, 222 flow [2023-08-04 04:17:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:17:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:17:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions. [2023-08-04 04:17:08,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782857142857143 [2023-08-04 04:17:08,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions. [2023-08-04 04:17:08,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions. [2023-08-04 04:17:08,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:08,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions. [2023-08-04 04:17:08,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 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) [2023-08-04 04:17:08,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 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) [2023-08-04 04:17:08,920 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 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) [2023-08-04 04:17:08,920 INFO L175 Difference]: Start difference. First operand has 67 places, 27 transitions, 137 flow. Second operand 7 states and 662 transitions. [2023-08-04 04:17:08,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 39 transitions, 222 flow [2023-08-04 04:17:08,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 188 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-08-04 04:17:08,922 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-04 04:17:08,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-04 04:17:08,923 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -14 predicate places. [2023-08-04 04:17:08,923 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-04 04:17:08,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 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) [2023-08-04 04:17:08,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-04 04:17:08,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-04 04:17:08,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-04 04:17:08,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-04 04:17:08,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-04 04:17:08,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-04 04:17:08,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:17:08,924 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:17:08,925 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:17:08,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:08,939 INFO L124 PetriNetUnfolderBase]: 13/164 cut-off events. [2023-08-04 04:17:08,939 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:17:08,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 13/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 473 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2023-08-04 04:17:08,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:08,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:08,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:17:08,941 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:08,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:08,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 290 flow [2023-08-04 04:17:08,952 INFO L124 PetriNetUnfolderBase]: 13/164 cut-off events. [2023-08-04 04:17:08,952 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:17:08,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 13/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 473 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 121. Up to 6 conditions per place. [2023-08-04 04:17:08,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 9116 [2023-08-04 04:17:11,391 INFO L134 LiptonReduction]: Checked pairs total: 28679 [2023-08-04 04:17:11,391 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-04 04:17:11,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:17:11,393 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=true, 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;@38e4a7d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:17:11,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:17:11,397 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:17:11,397 INFO L124 PetriNetUnfolderBase]: 3/43 cut-off events. [2023-08-04 04:17:11,397 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:17:11,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:17:11,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:17:11,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:17:11,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:17:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1167460293, now seen corresponding path program 1 times [2023-08-04 04:17:11,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:17:11,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234857081] [2023-08-04 04:17:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:11,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:17:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:17:11,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:17:11,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234857081] [2023-08-04 04:17:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234857081] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:17:11,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432320828] [2023-08-04 04:17:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:17:11,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:17:11,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:17:11,460 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) [2023-08-04 04:17:11,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:17:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:17:11,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:17:11,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:17:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:17:11,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:17:11,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432320828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:17:11,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:17:11,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:17:11,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526779694] [2023-08-04 04:17:11,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:17:11,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:17:11,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:17:11,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:17:11,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:17:11,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 249 [2023-08-04 04:17:11,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:17:11,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:17:11,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 249 [2023-08-04 04:17:11,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:17:11,723 INFO L124 PetriNetUnfolderBase]: 729/1225 cut-off events. [2023-08-04 04:17:11,723 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-04 04:17:11,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2370 conditions, 1225 events. 729/1225 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6508 event pairs, 77 based on Foata normal form. 33/1078 useless extension candidates. Maximal degree in co-relation 711. Up to 769 conditions per place. [2023-08-04 04:17:11,725 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2023-08-04 04:17:11,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 350 flow [2023-08-04 04:17:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:17:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:17:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 596 transitions. [2023-08-04 04:17:11,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478714859437751 [2023-08-04 04:17:11,728 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 596 transitions. [2023-08-04 04:17:11,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 596 transitions. [2023-08-04 04:17:11,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:17:11,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 596 transitions. [2023-08-04 04:17:11,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 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) [2023-08-04 04:17:11,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 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) [2023-08-04 04:17:11,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 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) [2023-08-04 04:17:11,732 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 136 flow. Second operand 5 states and 596 transitions. [2023-08-04 04:17:11,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 350 flow [2023-08-04 04:17:11,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 98 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:17:11,733 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-04 04:17:11,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-04 04:17:11,734 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-08-04 04:17:11,734 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-04 04:17:11,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:17:11,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:17:11,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 04:17:11,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:17:11,940 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:17:11,941 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:17:11,941 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:17:11,941 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:17:11,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:17:11 BasicIcfg [2023-08-04 04:17:11,946 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:17:11,947 INFO L158 Benchmark]: Toolchain (without parser) took 22709.11ms. Allocated memory was 553.6MB in the beginning and 664.8MB in the end (delta: 111.1MB). Free memory was 500.3MB in the beginning and 570.7MB in the end (delta: -70.4MB). Peak memory consumption was 380.1MB. Max. memory is 16.0GB. [2023-08-04 04:17:11,947 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 369.1MB. Free memory is still 314.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:17:11,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.08ms. Allocated memory is still 553.6MB. Free memory was 500.3MB in the beginning and 480.1MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:17:11,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.46ms. Allocated memory is still 553.6MB. Free memory was 480.1MB in the beginning and 477.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 04:17:11,948 INFO L158 Benchmark]: Boogie Preprocessor took 45.94ms. Allocated memory is still 553.6MB. Free memory was 477.6MB in the beginning and 476.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:17:11,948 INFO L158 Benchmark]: RCFGBuilder took 532.96ms. Allocated memory is still 553.6MB. Free memory was 476.0MB in the beginning and 452.4MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-04 04:17:11,949 INFO L158 Benchmark]: TraceAbstraction took 21621.51ms. Allocated memory was 553.6MB in the beginning and 664.8MB in the end (delta: 111.1MB). Free memory was 451.7MB in the beginning and 570.7MB in the end (delta: -119.0MB). Peak memory consumption was 331.9MB. Max. memory is 16.0GB. [2023-08-04 04:17:11,950 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 369.1MB. Free memory is still 314.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 441.08ms. Allocated memory is still 553.6MB. Free memory was 500.3MB in the beginning and 480.1MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.46ms. Allocated memory is still 553.6MB. Free memory was 480.1MB in the beginning and 477.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.94ms. Allocated memory is still 553.6MB. Free memory was 477.6MB in the beginning and 476.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 532.96ms. Allocated memory is still 553.6MB. Free memory was 476.0MB in the beginning and 452.4MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 21621.51ms. Allocated memory was 553.6MB in the beginning and 664.8MB in the end (delta: 111.1MB). Free memory was 451.7MB in the beginning and 570.7MB in the end (delta: -119.0MB). Peak memory consumption was 331.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] - GenericResultAtLocation [Line: 689]: Unsoundness Warning unspecified type, defaulting to int C: volatile unsigned [689] - GenericResultAtLocation [Line: 700]: Unsoundness Warning unspecified type, defaulting to int C: volatile unsigned [700] - GenericResultAtLocation [Line: 701]: Unsoundness Warning unspecified type, defaulting to int C: volatile unsigned [701] - GenericResultAtLocation [Line: 702]: Unsoundness Warning unspecified type, defaulting to int C: inline unsigned [702] - GenericResultAtLocation [Line: 703]: Unsoundness Warning unspecified type, defaulting to int C: unsigned [703] - GenericResultAtLocation [Line: 716]: Unsoundness Warning unspecified type, defaulting to int C: inline unsigned [716] - GenericResultAtLocation [Line: 717]: Unsoundness Warning unspecified type, defaulting to int C: unsigned [717] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 82 PlacesBefore, 12 PlacesAfterwards, 85 TransitionsBefore, 9 TransitionsAfterwards, 1696 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 74 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 6 ChoiceCompositions, 112 TotalNumberOfCompositions, 1628 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1628, independent: 1628, independent conditional: 0, independent unconditional: 1628, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 933, independent: 933, independent conditional: 0, independent unconditional: 933, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1628, independent: 695, independent conditional: 0, independent unconditional: 695, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 933, unknown conditional: 0, unknown unconditional: 933] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 82 PlacesBefore, 12 PlacesAfterwards, 85 TransitionsBefore, 9 TransitionsAfterwards, 1696 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 6 ChoiceCompositions, 114 TotalNumberOfCompositions, 1580 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1580, independent: 1580, independent conditional: 0, independent unconditional: 1580, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 945, independent: 945, independent conditional: 0, independent unconditional: 945, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1580, independent: 635, independent conditional: 0, independent unconditional: 635, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 945, unknown conditional: 0, unknown unconditional: 945] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 133 PlacesBefore, 58 PlacesAfterwards, 139 TransitionsBefore, 62 TransitionsAfterwards, 9116 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 34 ConcurrentYvCompositions, 2 ChoiceCompositions, 111 TotalNumberOfCompositions, 28995 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12287, independent: 11797, independent conditional: 0, independent unconditional: 11797, dependent: 490, dependent conditional: 0, dependent unconditional: 490, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5047, independent: 4933, independent conditional: 0, independent unconditional: 4933, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12287, independent: 6864, independent conditional: 0, independent unconditional: 6864, dependent: 376, dependent conditional: 0, dependent unconditional: 376, unknown: 5047, unknown conditional: 0, unknown unconditional: 5047] , Statistics on independence cache: Total cache size (in pairs): 521, Positive cache size: 470, Positive conditional cache size: 0, Positive unconditional cache size: 470, Negative cache size: 51, Negative conditional cache size: 0, Negative unconditional cache size: 51, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 133 PlacesBefore, 58 PlacesAfterwards, 139 TransitionsBefore, 62 TransitionsAfterwards, 9116 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 34 ConcurrentYvCompositions, 2 ChoiceCompositions, 110 TotalNumberOfCompositions, 28679 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12266, independent: 11786, independent conditional: 0, independent unconditional: 11786, dependent: 480, dependent conditional: 0, dependent unconditional: 480, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5054, independent: 4944, independent conditional: 0, independent unconditional: 4944, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12266, independent: 6842, independent conditional: 0, independent unconditional: 6842, dependent: 370, dependent conditional: 0, dependent unconditional: 370, unknown: 5054, unknown conditional: 0, unknown unconditional: 5054] , Statistics on independence cache: Total cache size (in pairs): 574, Positive cache size: 520, Positive conditional cache size: 0, Positive unconditional cache size: 520, Negative cache size: 54, Negative conditional cache size: 0, Negative unconditional cache size: 54, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 726]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 712]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 129 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 178 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.8s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1201 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 929 mSDsluCounter, 223 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2840 IncrementalHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 71 mSDtfsCounter, 2840 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=7, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 220 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 247 ConstructedInterpolants, 0 QuantifiedInterpolants, 1438 SizeOfPredicates, 9 NumberOfNonLiveVariables, 271 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 16/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 129 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 178 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 130 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:17:11,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...