/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 TOGETHER -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 [2023-08-03 15:38:49,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:38:49,144 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:38:49,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:38:49,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:38:49,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:38:49,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:38:49,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:38:49,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:38:49,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:38:49,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:38:49,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:38:49,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:38:49,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:38:49,178 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:38:49,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:38:49,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:38:49,179 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:38:49,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:38:49,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:38:49,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:38:49,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:38:49,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:38:49,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:38:49,180 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:38:49,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:38:49,180 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:38:49,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:38:49,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:38:49,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:38:49,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:38:49,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:38:49,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:38:49,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:38:49,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:38:49,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:38:49,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:38:49,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:38:49,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:38:49,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:38:49,183 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:38:49,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:38:49,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:38:49,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:38:49,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:38:49,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:38:49,336 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:38:49,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i [2023-08-03 15:38:50,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:38:50,445 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:38:50,445 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_03_incdec_bound2.i [2023-08-03 15:38:50,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed881d6f3/2025d8c10ece4b6ebabbd311be710bf8/FLAG1204e4322 [2023-08-03 15:38:50,464 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed881d6f3/2025d8c10ece4b6ebabbd311be710bf8 [2023-08-03 15:38:50,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:38:50,467 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:38:50,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:38:50,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:38:50,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:38:50,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2491a7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50, skipping insertion in model container [2023-08-03 15:38:50,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,502 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:38:50,682 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] [2023-08-03 15:38:50,683 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] [2023-08-03 15:38:50,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:38:50,694 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:38:50,706 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 15:38:50,708 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 15:38:50,715 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [689] [2023-08-03 15:38:50,716 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [700] [2023-08-03 15:38:50,717 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [701] [2023-08-03 15:38:50,717 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: inline unsigned [702] [2023-08-03 15:38:50,717 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned [703] [2023-08-03 15:38:50,718 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] [2023-08-03 15:38:50,718 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: inline unsigned [716] [2023-08-03 15:38:50,719 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned [717] [2023-08-03 15:38:50,719 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] [2023-08-03 15:38:50,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:38:50,741 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:38:50,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50 WrapperNode [2023-08-03 15:38:50,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:38:50,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:38:50,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:38:50,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:38:50,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,768 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 138 [2023-08-03 15:38:50,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:38:50,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:38:50,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:38:50,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:38:50,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:38:50,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:38:50,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:38:50,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:38:50,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (1/1) ... [2023-08-03 15:38:50,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:38:50,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:38:50,823 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) [2023-08-03 15:38:50,828 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 [2023-08-03 15:38:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:38:50,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:38:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:38:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:38:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:38:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:38:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:38:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:38:50,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:38:50,847 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:38:50,950 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:38:50,951 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:38:51,129 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:38:51,206 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:38:51,207 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 15:38:51,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:38:51 BoogieIcfgContainer [2023-08-03 15:38:51,208 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:38:51,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:38:51,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:38:51,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:38:51,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:38:50" (1/3) ... [2023-08-03 15:38:51,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527dc3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:38:51, skipping insertion in model container [2023-08-03 15:38:51,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:50" (2/3) ... [2023-08-03 15:38:51,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527dc3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:38:51, skipping insertion in model container [2023-08-03 15:38:51,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:38:51" (3/3) ... [2023-08-03 15:38:51,213 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_03_incdec_bound2.i [2023-08-03 15:38:51,218 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:38:51,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:38:51,224 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 15:38:51,224 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:38:51,264 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:38:51,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 175 flow [2023-08-03 15:38:51,311 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-03 15:38:51,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:38:51,315 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. [2023-08-03 15:38:51,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 85 transitions, 175 flow [2023-08-03 15:38:51,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 85 transitions, 175 flow [2023-08-03 15:38:51,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:38:51,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 175 flow [2023-08-03 15:38:51,328 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 85 transitions, 175 flow [2023-08-03 15:38:51,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 175 flow [2023-08-03 15:38:51,348 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-03 15:38:51,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:38:51,349 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. [2023-08-03 15:38:51,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 1696 [2023-08-03 15:38:55,254 INFO L134 LiptonReduction]: Checked pairs total: 1628 [2023-08-03 15:38:55,255 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-03 15:38:55,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:38:55,268 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;@7a2428a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:38:55,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 15:38:55,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:38:55,273 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 15:38:55,273 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:38:55,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:55,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:38:55,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:38:55,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:55,277 INFO L85 PathProgramCache]: Analyzing trace with hash 17688091, now seen corresponding path program 1 times [2023-08-03 15:38:55,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:55,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444812990] [2023-08-03 15:38:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:55,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:38:55,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444812990] [2023-08-03 15:38:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444812990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:55,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:38:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110410110] [2023-08-03 15:38:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:55,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 15:38:55,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 15:38:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 15:38:55,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 197 [2023-08-03 15:38:55,406 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) [2023-08-03 15:38:55,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:55,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 197 [2023-08-03 15:38:55,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:55,426 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-08-03 15:38:55,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:38:55,427 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. [2023-08-03 15:38:55,427 INFO L140 encePairwiseOnDemand]: 195/197 looper letters, 5 selfloop transitions, 0 changer transitions 1/7 dead transitions. [2023-08-03 15:38:55,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 31 flow [2023-08-03 15:38:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 15:38:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 15:38:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 146 transitions. [2023-08-03 15:38:55,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37055837563451777 [2023-08-03 15:38:55,439 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 146 transitions. [2023-08-03 15:38:55,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 146 transitions. [2023-08-03 15:38:55,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:55,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 146 transitions. [2023-08-03 15:38:55,446 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) [2023-08-03 15:38:55,448 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) [2023-08-03 15:38:55,448 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) [2023-08-03 15:38:55,449 INFO L175 Difference]: Start difference. First operand has 12 places, 9 transitions, 23 flow. Second operand 2 states and 146 transitions. [2023-08-03 15:38:55,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 31 flow [2023-08-03 15:38:55,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:38:55,452 INFO L231 Difference]: Finished difference. Result has 11 places, 6 transitions, 17 flow [2023-08-03 15:38:55,453 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=17, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2023-08-03 15:38:55,455 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -1 predicate places. [2023-08-03 15:38:55,456 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 17 flow [2023-08-03 15:38:55,456 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) [2023-08-03 15:38:55,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:55,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:38:55,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:38:55,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 15:38:55,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:55,458 INFO L85 PathProgramCache]: Analyzing trace with hash -181618807, now seen corresponding path program 1 times [2023-08-03 15:38:55,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:55,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135237750] [2023-08-03 15:38:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:55,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:38:55,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:38:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:38:55,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:38:55,508 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:38:55,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 15:38:55,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 15:38:55,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 15:38:55,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 15:38:55,510 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 15:38:55,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:38:55,511 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:38:55,512 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:38:55,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:38:55,531 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:38:55,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 290 flow [2023-08-03 15:38:55,554 INFO L124 PetriNetUnfolderBase]: 13/164 cut-off events. [2023-08-03 15:38:55,554 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:38:55,556 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. [2023-08-03 15:38:55,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 139 transitions, 290 flow [2023-08-03 15:38:55,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 290 flow [2023-08-03 15:38:55,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:38:55,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 290 flow [2023-08-03 15:38:55,557 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 290 flow [2023-08-03 15:38:55,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 290 flow [2023-08-03 15:38:55,574 INFO L124 PetriNetUnfolderBase]: 13/164 cut-off events. [2023-08-03 15:38:55,574 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:38:55,575 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. [2023-08-03 15:38:55,579 INFO L119 LiptonReduction]: Number of co-enabled transitions 9116 [2023-08-03 15:38:57,633 INFO L134 LiptonReduction]: Checked pairs total: 31456 [2023-08-03 15:38:57,633 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-03 15:38:57,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:38:57,636 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;@7a2428a2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:38:57,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 15:38:57,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:38:57,640 INFO L124 PetriNetUnfolderBase]: 3/43 cut-off events. [2023-08-03 15:38:57,640 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:38:57,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:57,646 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:38:57,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:38:57,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:57,647 INFO L85 PathProgramCache]: Analyzing trace with hash 258411322, now seen corresponding path program 1 times [2023-08-03 15:38:57,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:57,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416981450] [2023-08-03 15:38:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:57,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:38:57,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:57,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416981450] [2023-08-03 15:38:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416981450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:57,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:57,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:38:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167874264] [2023-08-03 15:38:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:57,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:38:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:38:57,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:38:57,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 248 [2023-08-03 15:38:57,793 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) [2023-08-03 15:38:57,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:57,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 248 [2023-08-03 15:38:57,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:57,969 INFO L124 PetriNetUnfolderBase]: 729/1225 cut-off events. [2023-08-03 15:38:57,969 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-03 15:38:57,971 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 6500 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. [2023-08-03 15:38:57,974 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 68 selfloop transitions, 4 changer transitions 1/98 dead transitions. [2023-08-03 15:38:57,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 350 flow [2023-08-03 15:38:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:38:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:38:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 596 transitions. [2023-08-03 15:38:57,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806451612903226 [2023-08-03 15:38:57,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 596 transitions. [2023-08-03 15:38:57,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 596 transitions. [2023-08-03 15:38:57,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:57,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 596 transitions. [2023-08-03 15:38:57,979 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) [2023-08-03 15:38:57,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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) [2023-08-03 15:38:57,982 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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) [2023-08-03 15:38:57,982 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 136 flow. Second operand 5 states and 596 transitions. [2023-08-03 15:38:57,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 350 flow [2023-08-03 15:38:57,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 98 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:38:57,984 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 144 flow [2023-08-03 15:38:57,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-08-03 15:38:57,985 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-08-03 15:38:57,985 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 144 flow [2023-08-03 15:38:57,985 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) [2023-08-03 15:38:57,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:57,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:57,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:38:57,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:38:57,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash 637109524, now seen corresponding path program 1 times [2023-08-03 15:38:57,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:57,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076670888] [2023-08-03 15:38:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:57,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:38:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:58,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076670888] [2023-08-03 15:38:58,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076670888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:58,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:58,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:38:58,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218702659] [2023-08-03 15:38:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:38:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:58,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:38:58,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:38:58,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 248 [2023-08-03 15:38:58,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 144 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) [2023-08-03 15:38:58,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:58,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 248 [2023-08-03 15:38:58,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:58,227 INFO L124 PetriNetUnfolderBase]: 774/1435 cut-off events. [2023-08-03 15:38:58,228 INFO L125 PetriNetUnfolderBase]: For 933/933 co-relation queries the response was YES. [2023-08-03 15:38:58,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 1435 events. 774/1435 cut-off events. For 933/933 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8067 event pairs, 291 based on Foata normal form. 56/1349 useless extension candidates. Maximal degree in co-relation 2064. Up to 1117 conditions per place. [2023-08-03 15:38:58,233 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 52 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-08-03 15:38:58,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 304 flow [2023-08-03 15:38:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:38:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:38:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-08-03 15:38:58,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2023-08-03 15:38:58,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-08-03 15:38:58,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-08-03 15:38:58,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:58,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-08-03 15:38:58,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2023-08-03 15:38:58,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-08-03 15:38:58,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-08-03 15:38:58,237 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 144 flow. Second operand 3 states and 352 transitions. [2023-08-03 15:38:58,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 304 flow [2023-08-03 15:38:58,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:38:58,239 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 168 flow [2023-08-03 15:38:58,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-03 15:38:58,240 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-03 15:38:58,240 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 168 flow [2023-08-03 15:38:58,240 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) [2023-08-03 15:38:58,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:58,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:58,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:38:58,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:38:58,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:58,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1355092242, now seen corresponding path program 1 times [2023-08-03 15:38:58,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:58,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672028944] [2023-08-03 15:38:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:58,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:38:58,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:58,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672028944] [2023-08-03 15:38:58,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672028944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:58,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:58,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:38:58,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846790548] [2023-08-03 15:38:58,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:58,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:38:58,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:38:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:38:58,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 248 [2023-08-03 15:38:58,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 168 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) [2023-08-03 15:38:58,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:58,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 248 [2023-08-03 15:38:58,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:58,662 INFO L124 PetriNetUnfolderBase]: 1099/2013 cut-off events. [2023-08-03 15:38:58,663 INFO L125 PetriNetUnfolderBase]: For 1531/1531 co-relation queries the response was YES. [2023-08-03 15:38:58,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5041 conditions, 2013 events. 1099/2013 cut-off events. For 1531/1531 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12005 event pairs, 299 based on Foata normal form. 15/1888 useless extension candidates. Maximal degree in co-relation 3635. Up to 583 conditions per place. [2023-08-03 15:38:58,669 INFO L140 encePairwiseOnDemand]: 240/248 looper letters, 72 selfloop transitions, 10 changer transitions 11/107 dead transitions. [2023-08-03 15:38:58,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 107 transitions, 513 flow [2023-08-03 15:38:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:38:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:38:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 647 transitions. [2023-08-03 15:38:58,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43481182795698925 [2023-08-03 15:38:58,671 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 647 transitions. [2023-08-03 15:38:58,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 647 transitions. [2023-08-03 15:38:58,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:58,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 647 transitions. [2023-08-03 15:38:58,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 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) [2023-08-03 15:38:58,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 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) [2023-08-03 15:38:58,675 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 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) [2023-08-03 15:38:58,675 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 168 flow. Second operand 6 states and 647 transitions. [2023-08-03 15:38:58,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 107 transitions, 513 flow [2023-08-03 15:38:58,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 107 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:38:58,679 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 197 flow [2023-08-03 15:38:58,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-08-03 15:38:58,680 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-03 15:38:58,681 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 197 flow [2023-08-03 15:38:58,681 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) [2023-08-03 15:38:58,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:58,681 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:58,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:38:58,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:38:58,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1666582275, now seen corresponding path program 1 times [2023-08-03 15:38:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512394731] [2023-08-03 15:38:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:38:58,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:58,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512394731] [2023-08-03 15:38:58,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512394731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:58,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:58,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:38:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479631997] [2023-08-03 15:38:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:58,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:38:58,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:38:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:38:58,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 248 [2023-08-03 15:38:58,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 197 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) [2023-08-03 15:38:58,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:58,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 248 [2023-08-03 15:38:58,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:59,121 INFO L124 PetriNetUnfolderBase]: 1041/1967 cut-off events. [2023-08-03 15:38:59,121 INFO L125 PetriNetUnfolderBase]: For 2009/2012 co-relation queries the response was YES. [2023-08-03 15:38:59,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 1967 events. 1041/1967 cut-off events. For 2009/2012 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12099 event pairs, 255 based on Foata normal form. 57/1951 useless extension candidates. Maximal degree in co-relation 3665. Up to 626 conditions per place. [2023-08-03 15:38:59,128 INFO L140 encePairwiseOnDemand]: 240/248 looper letters, 62 selfloop transitions, 12 changer transitions 9/98 dead transitions. [2023-08-03 15:38:59,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 98 transitions, 500 flow [2023-08-03 15:38:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:38:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:38:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 639 transitions. [2023-08-03 15:38:59,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42943548387096775 [2023-08-03 15:38:59,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 639 transitions. [2023-08-03 15:38:59,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 639 transitions. [2023-08-03 15:38:59,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:59,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 639 transitions. [2023-08-03 15:38:59,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 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) [2023-08-03 15:38:59,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 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) [2023-08-03 15:38:59,134 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 248.0) internal successors, (1736), 7 states have internal predecessors, (1736), 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) [2023-08-03 15:38:59,134 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 197 flow. Second operand 6 states and 639 transitions. [2023-08-03 15:38:59,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 98 transitions, 500 flow [2023-08-03 15:38:59,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:38:59,137 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 244 flow [2023-08-03 15:38:59,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=66, 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=244, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2023-08-03 15:38:59,137 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2023-08-03 15:38:59,137 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 244 flow [2023-08-03 15:38:59,138 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) [2023-08-03 15:38:59,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:59,138 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:59,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:38:59,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:38:59,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 441424147, now seen corresponding path program 1 times [2023-08-03 15:38:59,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:59,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091863264] [2023-08-03 15:38:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:59,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:38:59,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:59,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091863264] [2023-08-03 15:38:59,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091863264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:59,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:59,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:38:59,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293881727] [2023-08-03 15:38:59,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:59,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:38:59,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:59,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:38:59,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:38:59,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 248 [2023-08-03 15:38:59,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 244 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) [2023-08-03 15:38:59,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:59,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 248 [2023-08-03 15:38:59,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:59,281 INFO L124 PetriNetUnfolderBase]: 742/1504 cut-off events. [2023-08-03 15:38:59,281 INFO L125 PetriNetUnfolderBase]: For 1367/1403 co-relation queries the response was YES. [2023-08-03 15:38:59,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 1504 events. 742/1504 cut-off events. For 1367/1403 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9626 event pairs, 518 based on Foata normal form. 30/1461 useless extension candidates. Maximal degree in co-relation 2354. Up to 957 conditions per place. [2023-08-03 15:38:59,287 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 37 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2023-08-03 15:38:59,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 352 flow [2023-08-03 15:38:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:38:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:38:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-08-03 15:38:59,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46908602150537637 [2023-08-03 15:38:59,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-08-03 15:38:59,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-08-03 15:38:59,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:59,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-08-03 15:38:59,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2023-08-03 15:38:59,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-08-03 15:38:59,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-08-03 15:38:59,290 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 244 flow. Second operand 3 states and 349 transitions. [2023-08-03 15:38:59,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 352 flow [2023-08-03 15:38:59,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 348 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 15:38:59,293 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 246 flow [2023-08-03 15:38:59,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=246, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2023-08-03 15:38:59,294 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2023-08-03 15:38:59,294 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 246 flow [2023-08-03 15:38:59,294 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) [2023-08-03 15:38:59,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:59,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:59,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:38:59,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:38:59,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:59,295 INFO L85 PathProgramCache]: Analyzing trace with hash 848803600, now seen corresponding path program 1 times [2023-08-03 15:38:59,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:59,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234375526] [2023-08-03 15:38:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:59,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:38:59,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:59,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234375526] [2023-08-03 15:38:59,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234375526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:59,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:59,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:38:59,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420586224] [2023-08-03 15:38:59,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:59,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:38:59,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:59,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:38:59,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:38:59,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 248 [2023-08-03 15:38:59,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 246 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) [2023-08-03 15:38:59,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:59,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 248 [2023-08-03 15:38:59,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:59,485 INFO L124 PetriNetUnfolderBase]: 729/1470 cut-off events. [2023-08-03 15:38:59,485 INFO L125 PetriNetUnfolderBase]: For 1567/1570 co-relation queries the response was YES. [2023-08-03 15:38:59,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3948 conditions, 1470 events. 729/1470 cut-off events. For 1567/1570 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9181 event pairs, 322 based on Foata normal form. 30/1453 useless extension candidates. Maximal degree in co-relation 3537. Up to 1190 conditions per place. [2023-08-03 15:38:59,491 INFO L140 encePairwiseOnDemand]: 243/248 looper letters, 29 selfloop transitions, 2 changer transitions 18/65 dead transitions. [2023-08-03 15:38:59,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 362 flow [2023-08-03 15:38:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:38:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:38:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-03 15:38:59,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46639784946236557 [2023-08-03 15:38:59,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-03 15:38:59,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-03 15:38:59,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:59,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-03 15:38:59,493 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) [2023-08-03 15:38:59,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-08-03 15:38:59,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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) [2023-08-03 15:38:59,494 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 246 flow. Second operand 3 states and 347 transitions. [2023-08-03 15:38:59,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 362 flow [2023-08-03 15:38:59,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:38:59,498 INFO L231 Difference]: Finished difference. Result has 73 places, 40 transitions, 204 flow [2023-08-03 15:38:59,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=204, PETRI_PLACES=73, PETRI_TRANSITIONS=40} [2023-08-03 15:38:59,499 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2023-08-03 15:38:59,499 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 40 transitions, 204 flow [2023-08-03 15:38:59,499 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) [2023-08-03 15:38:59,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:59,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:59,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:38:59,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:38:59,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash -347136434, now seen corresponding path program 1 times [2023-08-03 15:38:59,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:59,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179628211] [2023-08-03 15:38:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:59,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:38:59,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:59,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179628211] [2023-08-03 15:38:59,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179628211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:59,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:59,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:38:59,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737957728] [2023-08-03 15:38:59,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:59,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:38:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:38:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:38:59,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 248 [2023-08-03 15:38:59,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 40 transitions, 204 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) [2023-08-03 15:38:59,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:59,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 248 [2023-08-03 15:38:59,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:59,915 INFO L124 PetriNetUnfolderBase]: 930/1803 cut-off events. [2023-08-03 15:38:59,915 INFO L125 PetriNetUnfolderBase]: For 3055/3085 co-relation queries the response was YES. [2023-08-03 15:38:59,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5385 conditions, 1803 events. 930/1803 cut-off events. For 3055/3085 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11401 event pairs, 379 based on Foata normal form. 57/1859 useless extension candidates. Maximal degree in co-relation 4640. Up to 1106 conditions per place. [2023-08-03 15:38:59,922 INFO L140 encePairwiseOnDemand]: 239/248 looper letters, 52 selfloop transitions, 13 changer transitions 2/75 dead transitions. [2023-08-03 15:38:59,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 510 flow [2023-08-03 15:38:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:38:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:38:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 694 transitions. [2023-08-03 15:38:59,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39976958525345624 [2023-08-03 15:38:59,924 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 694 transitions. [2023-08-03 15:38:59,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 694 transitions. [2023-08-03 15:38:59,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:59,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 694 transitions. [2023-08-03 15:38:59,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.14285714285714) internal successors, (694), 7 states have internal predecessors, (694), 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) [2023-08-03 15:38:59,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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) [2023-08-03 15:38:59,928 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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) [2023-08-03 15:38:59,928 INFO L175 Difference]: Start difference. First operand has 73 places, 40 transitions, 204 flow. Second operand 7 states and 694 transitions. [2023-08-03 15:38:59,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 510 flow [2023-08-03 15:38:59,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 497 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-03 15:38:59,931 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 289 flow [2023-08-03 15:38:59,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2023-08-03 15:38:59,934 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-08-03 15:38:59,934 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 289 flow [2023-08-03 15:38:59,934 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) [2023-08-03 15:38:59,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:59,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:59,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:38:59,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:38:59,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash 13130126, now seen corresponding path program 2 times [2023-08-03 15:38:59,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:59,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494001978] [2023-08-03 15:38:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:39:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:39:00,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:39:00,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494001978] [2023-08-03 15:39:00,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494001978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:39:00,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:39:00,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:39:00,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21890386] [2023-08-03 15:39:00,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:39:00,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:39:00,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:39:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:39:00,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:39:00,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 248 [2023-08-03 15:39:00,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 289 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) [2023-08-03 15:39:00,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:39:00,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 248 [2023-08-03 15:39:00,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:39:00,442 INFO L124 PetriNetUnfolderBase]: 1178/2256 cut-off events. [2023-08-03 15:39:00,443 INFO L125 PetriNetUnfolderBase]: For 4726/4760 co-relation queries the response was YES. [2023-08-03 15:39:00,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7055 conditions, 2256 events. 1178/2256 cut-off events. For 4726/4760 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15021 event pairs, 359 based on Foata normal form. 59/2306 useless extension candidates. Maximal degree in co-relation 6856. Up to 924 conditions per place. [2023-08-03 15:39:00,449 INFO L140 encePairwiseOnDemand]: 239/248 looper letters, 54 selfloop transitions, 19 changer transitions 5/86 dead transitions. [2023-08-03 15:39:00,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 653 flow [2023-08-03 15:39:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:39:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:39:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 695 transitions. [2023-08-03 15:39:00,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40034562211981567 [2023-08-03 15:39:00,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 695 transitions. [2023-08-03 15:39:00,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 695 transitions. [2023-08-03 15:39:00,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:39:00,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 695 transitions. [2023-08-03 15:39:00,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 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) [2023-08-03 15:39:00,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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) [2023-08-03 15:39:00,456 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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) [2023-08-03 15:39:00,456 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 289 flow. Second operand 7 states and 695 transitions. [2023-08-03 15:39:00,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 653 flow [2023-08-03 15:39:00,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 624 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-03 15:39:00,461 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 373 flow [2023-08-03 15:39:00,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2023-08-03 15:39:00,462 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-08-03 15:39:00,462 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 373 flow [2023-08-03 15:39:00,462 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) [2023-08-03 15:39:00,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:39:00,462 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:39:00,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 15:39:00,462 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:39:00,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:39:00,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1437911184, now seen corresponding path program 3 times [2023-08-03 15:39:00,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:39:00,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542239639] [2023-08-03 15:39:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:39:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:39:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:39:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:39:00,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:39:00,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542239639] [2023-08-03 15:39:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542239639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:39:00,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:39:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:39:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167489839] [2023-08-03 15:39:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:39:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 15:39:00,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:39:00,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 15:39:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-03 15:39:00,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 248 [2023-08-03 15:39:00,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-08-03 15:39:00,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:39:00,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 248 [2023-08-03 15:39:00,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:39:00,927 INFO L124 PetriNetUnfolderBase]: 617/1306 cut-off events. [2023-08-03 15:39:00,927 INFO L125 PetriNetUnfolderBase]: For 3696/3716 co-relation queries the response was YES. [2023-08-03 15:39:00,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 1306 events. 617/1306 cut-off events. For 3696/3716 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8334 event pairs, 88 based on Foata normal form. 46/1348 useless extension candidates. Maximal degree in co-relation 4255. Up to 329 conditions per place. [2023-08-03 15:39:00,935 INFO L140 encePairwiseOnDemand]: 240/248 looper letters, 33 selfloop transitions, 12 changer transitions 39/90 dead transitions. [2023-08-03 15:39:00,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 683 flow [2023-08-03 15:39:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 15:39:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 15:39:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 786 transitions. [2023-08-03 15:39:00,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961693548387097 [2023-08-03 15:39:00,938 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 786 transitions. [2023-08-03 15:39:00,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 786 transitions. [2023-08-03 15:39:00,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:39:00,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 786 transitions. [2023-08-03 15:39:00,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 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) [2023-08-03 15:39:00,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 248.0) internal successors, (2232), 9 states have internal predecessors, (2232), 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) [2023-08-03 15:39:00,942 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 248.0) internal successors, (2232), 9 states have internal predecessors, (2232), 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) [2023-08-03 15:39:00,942 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 373 flow. Second operand 8 states and 786 transitions. [2023-08-03 15:39:00,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 683 flow [2023-08-03 15:39:00,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 90 transitions, 655 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-03 15:39:00,948 INFO L231 Difference]: Finished difference. Result has 72 places, 38 transitions, 248 flow [2023-08-03 15:39:00,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=248, PETRI_PLACES=72, PETRI_TRANSITIONS=38} [2023-08-03 15:39:00,949 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-08-03 15:39:00,949 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 38 transitions, 248 flow [2023-08-03 15:39:00,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-08-03 15:39:00,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:39:00,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:39:00,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 15:39:00,950 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 15:39:00,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:39:00,950 INFO L85 PathProgramCache]: Analyzing trace with hash -526983676, now seen corresponding path program 1 times [2023-08-03 15:39:00,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:39:00,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378430841] [2023-08-03 15:39:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:39:00,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:39:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:39:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:39:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:39:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378430841] [2023-08-03 15:39:01,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378430841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:39:01,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:39:01,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:39:01,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945262991] [2023-08-03 15:39:01,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:39:01,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 15:39:01,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:39:01,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 15:39:01,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-03 15:39:01,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 248 [2023-08-03 15:39:01,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 38 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-08-03 15:39:01,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:39:01,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 248 [2023-08-03 15:39:01,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:39:01,288 INFO L124 PetriNetUnfolderBase]: 206/430 cut-off events. [2023-08-03 15:39:01,288 INFO L125 PetriNetUnfolderBase]: For 1432/1444 co-relation queries the response was YES. [2023-08-03 15:39:01,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 430 events. 206/430 cut-off events. For 1432/1444 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1816 event pairs, 14 based on Foata normal form. 27/457 useless extension candidates. Maximal degree in co-relation 1496. Up to 145 conditions per place. [2023-08-03 15:39:01,289 INFO L140 encePairwiseOnDemand]: 241/248 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-03 15:39:01,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 50 transitions, 376 flow [2023-08-03 15:39:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:39:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:39:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 667 transitions. [2023-08-03 15:39:01,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38421658986175117 [2023-08-03 15:39:01,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 667 transitions. [2023-08-03 15:39:01,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 667 transitions. [2023-08-03 15:39:01,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:39:01,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 667 transitions. [2023-08-03 15:39:01,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.28571428571429) internal successors, (667), 7 states have internal predecessors, (667), 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) [2023-08-03 15:39:01,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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) [2023-08-03 15:39:01,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 248.0) internal successors, (1984), 8 states have internal predecessors, (1984), 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) [2023-08-03 15:39:01,295 INFO L175 Difference]: Start difference. First operand has 72 places, 38 transitions, 248 flow. Second operand 7 states and 667 transitions. [2023-08-03 15:39:01,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 50 transitions, 376 flow [2023-08-03 15:39:01,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 321 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-08-03 15:39:01,297 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-08-03 15:39:01,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-08-03 15:39:01,297 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-03 15:39:01,297 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-08-03 15:39:01,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-08-03 15:39:01,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 15:39:01,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 15:39:01,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-03 15:39:01,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-03 15:39:01,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-03 15:39:01,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-03 15:39:01,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 15:39:01,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 15:39:01,300 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:39:01,302 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:39:01,303 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:39:01,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:39:01 BasicIcfg [2023-08-03 15:39:01,305 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:39:01,306 INFO L158 Benchmark]: Toolchain (without parser) took 10838.90ms. Allocated memory was 343.9MB in the beginning and 610.3MB in the end (delta: 266.3MB). Free memory was 299.5MB in the beginning and 339.7MB in the end (delta: -40.2MB). Peak memory consumption was 227.1MB. Max. memory is 16.0GB. [2023-08-03 15:39:01,306 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 343.9MB. Free memory was 291.8MB in the beginning and 291.6MB in the end (delta: 279.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:39:01,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.18ms. Allocated memory is still 343.9MB. Free memory was 299.5MB in the beginning and 279.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:39:01,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.69ms. Allocated memory is still 343.9MB. Free memory was 279.6MB in the beginning and 277.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:39:01,306 INFO L158 Benchmark]: Boogie Preprocessor took 28.06ms. Allocated memory is still 343.9MB. Free memory was 277.5MB in the beginning and 275.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:39:01,306 INFO L158 Benchmark]: RCFGBuilder took 410.63ms. Allocated memory is still 343.9MB. Free memory was 275.4MB in the beginning and 251.3MB in the end (delta: 24.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-03 15:39:01,307 INFO L158 Benchmark]: TraceAbstraction took 10095.86ms. Allocated memory was 343.9MB in the beginning and 610.3MB in the end (delta: 266.3MB). Free memory was 250.3MB in the beginning and 339.7MB in the end (delta: -89.4MB). Peak memory consumption was 178.9MB. Max. memory is 16.0GB. [2023-08-03 15:39:01,308 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 343.9MB. Free memory was 291.8MB in the beginning and 291.6MB in the end (delta: 279.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 274.18ms. Allocated memory is still 343.9MB. Free memory was 299.5MB in the beginning and 279.6MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.69ms. Allocated memory is still 343.9MB. Free memory was 279.6MB in the beginning and 277.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.06ms. Allocated memory is still 343.9MB. Free memory was 277.5MB in the beginning and 275.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 410.63ms. Allocated memory is still 343.9MB. Free memory was 275.4MB in the beginning and 251.3MB in the end (delta: 24.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 10095.86ms. Allocated memory was 343.9MB in the beginning and 610.3MB in the end (delta: 266.3MB). Free memory was 250.3MB in the beginning and 339.7MB in the end (delta: -89.4MB). Peak memory consumption was 178.9MB. 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: 3.9s, 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: 2.1s, 133 PlacesBefore, 58 PlacesAfterwards, 139 TransitionsBefore, 62 TransitionsAfterwards, 9116 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 34 ConcurrentYvCompositions, 2 ChoiceCompositions, 109 TotalNumberOfCompositions, 31456 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13716, independent: 13146, independent conditional: 0, independent unconditional: 13146, dependent: 570, dependent conditional: 0, dependent unconditional: 570, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5152, independent: 5030, independent conditional: 0, independent unconditional: 5030, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13716, independent: 8116, independent conditional: 0, independent unconditional: 8116, dependent: 448, dependent conditional: 0, dependent unconditional: 448, unknown: 5152, unknown conditional: 0, unknown unconditional: 5152] , Statistics on independence cache: Total cache size (in pairs): 586, Positive cache size: 535, Positive conditional cache size: 0, Positive unconditional cache size: 535, 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 - PositiveResult [Line: 712]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 726]: 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: 4.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, 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, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 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: 5.8s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1150 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 846 mSDsluCounter, 207 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2453 IncrementalHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 50 mSDtfsCounter, 2453 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=8, InterpolantAutomatonStates: 55, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 1113 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 22/22 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! [2023-08-03 15:39:01,332 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...