/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_25_stack_longer-2_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:48:24,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:48:24,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:48:24,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:48:24,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:48:24,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:48:24,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:48:24,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:48:24,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:48:24,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:48:24,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:48:24,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:48:24,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:48:24,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:48:24,970 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:48:24,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:48:24,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:48:24,971 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:48:24,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:48:24,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:48:24,971 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:48:24,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:48:24,972 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:48:24,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:48:24,972 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:48:24,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:48:24,974 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:48:24,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:48:24,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:48:24,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:48:24,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:48:24,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:48:24,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:48:24,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:48:24,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:48:24,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:48:24,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:48:24,977 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:48:24,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:48:24,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:48:24,978 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:48:24,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:48:25,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:48:25,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:48:25,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:48:25,257 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:48:25,258 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:48:25,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longer-2_bound2.i [2023-08-03 15:48:26,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:48:26,702 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:48:26,703 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longer-2_bound2.i [2023-08-03 15:48:26,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c079415/9cf7143e38df42e4b227f8599a787136/FLAGe3d2f563e [2023-08-03 15:48:26,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c079415/9cf7143e38df42e4b227f8599a787136 [2023-08-03 15:48:26,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:48:26,746 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:48:26,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:48:26,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:48:26,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:48:26,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:48:26" (1/1) ... [2023-08-03 15:48:26,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50113a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:26, skipping insertion in model container [2023-08-03 15:48:26,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:48:26" (1/1) ... [2023-08-03 15:48:26,799 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:48:27,081 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_25_stack_longer-2_bound2.i[31179,31192] [2023-08-03 15:48:27,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:48:27,102 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:48:27,129 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-03 15:48:27,131 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-03 15:48:27,155 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_25_stack_longer-2_bound2.i[31179,31192] [2023-08-03 15:48:27,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:48:27,197 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:48:27,197 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:48:27,203 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:48:27,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27 WrapperNode [2023-08-03 15:48:27,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:48:27,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:48:27,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:48:27,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:48:27,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,271 INFO L138 Inliner]: procedures = 179, calls = 36, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 179 [2023-08-03 15:48:27,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:48:27,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:48:27,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:48:27,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:48:27,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:48:27,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:48:27,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:48:27,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:48:27,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (1/1) ... [2023-08-03 15:48:27,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:48:27,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:27,354 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 15:48:27,359 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 15:48:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:48:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:48:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:48:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:48:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 15:48:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:48:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:48:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:48:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:48:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 15:48:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:48:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:48:27,382 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 15:48:27,490 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:48:27,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:48:27,755 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:48:27,902 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:48:27,903 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 15:48:27,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:48:27 BoogieIcfgContainer [2023-08-03 15:48:27,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:48:27,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:48:27,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:48:27,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:48:27,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:48:26" (1/3) ... [2023-08-03 15:48:27,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4649613b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:48:27, skipping insertion in model container [2023-08-03 15:48:27,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:48:27" (2/3) ... [2023-08-03 15:48:27,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4649613b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:48:27, skipping insertion in model container [2023-08-03 15:48:27,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:48:27" (3/3) ... [2023-08-03 15:48:27,912 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_25_stack_longer-2_bound2.i [2023-08-03 15:48:27,919 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:48:27,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:48:27,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:48:27,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:48:27,994 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:48:28,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:28,100 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-03 15:48:28,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:48:28,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 8/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-03 15:48:28,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:28,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:28,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:48:28,131 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:28,135 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:28,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 15:48:28,169 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-03 15:48:28,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:48:28,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 8/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-03 15:48:28,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 1984 [2023-08-03 15:48:33,239 INFO L134 LiptonReduction]: Checked pairs total: 1726 [2023-08-03 15:48:33,239 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-03 15:48:33,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:48:33,255 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;@2a5200cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:48:33,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:48:33,259 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:48:33,259 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 15:48:33,259 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:48:33,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:33,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:48:33,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:48:33,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1092898197, now seen corresponding path program 1 times [2023-08-03 15:48:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:33,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894794106] [2023-08-03 15:48:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:33,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:48:33,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:48:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:48:33,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:48:33,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:48:33,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:48:33,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:48:33,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:48:33,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:48:33,408 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 15:48:33,413 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:48:33,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:48:33,458 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:48:33,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:33,509 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-03 15:48:33,509 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:48:33,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-08-03 15:48:33,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:33,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:33,512 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:48:33,513 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:33,513 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:33,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 15:48:33,537 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-03 15:48:33,537 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:48:33,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-08-03 15:48:33,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 11780 [2023-08-03 15:48:38,113 INFO L134 LiptonReduction]: Checked pairs total: 23811 [2023-08-03 15:48:38,113 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 15:48:38,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:48:38,116 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;@2a5200cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:48:38,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:48:38,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:48:38,121 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-03 15:48:38,121 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:48:38,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:38,121 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:48:38,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:38,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:38,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1302958535, now seen corresponding path program 1 times [2023-08-03 15:48:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:38,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338893816] [2023-08-03 15:48:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:38,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338893816] [2023-08-03 15:48:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338893816] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:48:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020543805] [2023-08-03 15:48:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:38,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:38,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:48:38,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:48:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:38,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:48:38,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:38,444 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 15:48:38,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:48:38,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020543805] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:38,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:48:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:48:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426884799] [2023-08-03 15:48:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:38,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:38,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:38,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:48:38,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-03 15:48:38,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 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 15:48:38,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:38,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-03 15:48:38,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:38,795 INFO L124 PetriNetUnfolderBase]: 934/1547 cut-off events. [2023-08-03 15:48:38,795 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 15:48:38,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1547 events. 934/1547 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7715 event pairs, 0 based on Foata normal form. 0/1191 useless extension candidates. Maximal degree in co-relation 291. Up to 987 conditions per place. [2023-08-03 15:48:38,807 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 75 selfloop transitions, 4 changer transitions 1/101 dead transitions. [2023-08-03 15:48:38,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 370 flow [2023-08-03 15:48:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2023-08-03 15:48:38,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215277777777778 [2023-08-03 15:48:38,822 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2023-08-03 15:48:38,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2023-08-03 15:48:38,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:38,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2023-08-03 15:48:38,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 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 15:48:38,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:38,838 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:38,840 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 128 flow. Second operand 5 states and 751 transitions. [2023-08-03 15:48:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 370 flow [2023-08-03 15:48:38,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:38,846 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 142 flow [2023-08-03 15:48:38,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-08-03 15:48:38,850 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-03 15:48:38,851 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 142 flow [2023-08-03 15:48:38,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 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 15:48:38,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:38,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:38,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:48:39,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:39,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:39,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash -280930235, now seen corresponding path program 1 times [2023-08-03 15:48:39,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:39,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127503132] [2023-08-03 15:48:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:39,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:39,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:39,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127503132] [2023-08-03 15:48:39,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127503132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:39,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:39,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:39,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148358886] [2023-08-03 15:48:39,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:39,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:39,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:39,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:39,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:39,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 288 [2023-08-03 15:48:39,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 15:48:39,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:39,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 288 [2023-08-03 15:48:39,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:39,508 INFO L124 PetriNetUnfolderBase]: 1171/2247 cut-off events. [2023-08-03 15:48:39,508 INFO L125 PetriNetUnfolderBase]: For 1159/1159 co-relation queries the response was YES. [2023-08-03 15:48:39,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4828 conditions, 2247 events. 1171/2247 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13657 event pairs, 281 based on Foata normal form. 0/1876 useless extension candidates. Maximal degree in co-relation 4195. Up to 1213 conditions per place. [2023-08-03 15:48:39,521 INFO L140 encePairwiseOnDemand]: 278/288 looper letters, 78 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-03 15:48:39,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 460 flow [2023-08-03 15:48:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 731 transitions. [2023-08-03 15:48:39,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076388888888889 [2023-08-03 15:48:39,525 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 731 transitions. [2023-08-03 15:48:39,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 731 transitions. [2023-08-03 15:48:39,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:39,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 731 transitions. [2023-08-03 15:48:39,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 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 15:48:39,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:39,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:39,531 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 142 flow. Second operand 5 states and 731 transitions. [2023-08-03 15:48:39,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 460 flow [2023-08-03 15:48:39,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:39,535 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 211 flow [2023-08-03 15:48:39,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-03 15:48:39,537 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-08-03 15:48:39,537 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 211 flow [2023-08-03 15:48:39,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 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 15:48:39,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:39,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:39,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:48:39,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:39,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1594258178, now seen corresponding path program 1 times [2023-08-03 15:48:39,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74210559] [2023-08-03 15:48:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:39,653 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 15:48:39,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:39,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74210559] [2023-08-03 15:48:39,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74210559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:39,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:39,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:39,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859036007] [2023-08-03 15:48:39,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:39,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:39,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:39,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:39,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:39,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-03 15:48:39,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 15:48:39,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:39,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-03 15:48:39,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:39,953 INFO L124 PetriNetUnfolderBase]: 1485/2757 cut-off events. [2023-08-03 15:48:39,954 INFO L125 PetriNetUnfolderBase]: For 2352/2369 co-relation queries the response was YES. [2023-08-03 15:48:39,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6777 conditions, 2757 events. 1485/2757 cut-off events. For 2352/2369 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17062 event pairs, 312 based on Foata normal form. 72/2552 useless extension candidates. Maximal degree in co-relation 4221. Up to 1879 conditions per place. [2023-08-03 15:48:39,977 INFO L140 encePairwiseOnDemand]: 283/288 looper letters, 62 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-08-03 15:48:39,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 86 transitions, 435 flow [2023-08-03 15:48:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-03 15:48:39,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289351851851852 [2023-08-03 15:48:39,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-03 15:48:39,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-03 15:48:39,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:39,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-03 15:48:39,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 15:48:39,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 15:48:39,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 15:48:39,983 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 211 flow. Second operand 3 states and 457 transitions. [2023-08-03 15:48:39,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 86 transitions, 435 flow [2023-08-03 15:48:39,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:39,989 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 232 flow [2023-08-03 15:48:39,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-03 15:48:39,991 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2023-08-03 15:48:39,991 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 232 flow [2023-08-03 15:48:39,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 15:48:39,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:39,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:39,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:48:39,992 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:39,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1321627054, now seen corresponding path program 1 times [2023-08-03 15:48:39,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:39,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608353173] [2023-08-03 15:48:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:39,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:40,101 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 15:48:40,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:40,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608353173] [2023-08-03 15:48:40,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608353173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:40,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:40,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:40,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056525029] [2023-08-03 15:48:40,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:40,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:40,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:40,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:40,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 15:48:40,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 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 15:48:40,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:40,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 15:48:40,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:40,531 INFO L124 PetriNetUnfolderBase]: 1786/3638 cut-off events. [2023-08-03 15:48:40,531 INFO L125 PetriNetUnfolderBase]: For 2603/2620 co-relation queries the response was YES. [2023-08-03 15:48:40,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 3638 events. 1786/3638 cut-off events. For 2603/2620 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 25608 event pairs, 854 based on Foata normal form. 17/3263 useless extension candidates. Maximal degree in co-relation 5341. Up to 1815 conditions per place. [2023-08-03 15:48:40,559 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 65 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-08-03 15:48:40,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 452 flow [2023-08-03 15:48:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:40,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-03 15:48:40,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2023-08-03 15:48:40,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-03 15:48:40,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-03 15:48:40,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:40,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-03 15:48:40,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 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 15:48:40,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 15:48:40,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 15:48:40,565 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 232 flow. Second operand 3 states and 466 transitions. [2023-08-03 15:48:40,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 452 flow [2023-08-03 15:48:40,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 94 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:40,573 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 247 flow [2023-08-03 15:48:40,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2023-08-03 15:48:40,575 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-03 15:48:40,575 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 247 flow [2023-08-03 15:48:40,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 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 15:48:40,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:40,575 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 15:48:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:48:40,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:40,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1490531057, now seen corresponding path program 1 times [2023-08-03 15:48:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886975093] [2023-08-03 15:48:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:40,642 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 15:48:40,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:40,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886975093] [2023-08-03 15:48:40,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886975093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:40,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:40,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:40,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558499542] [2023-08-03 15:48:40,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:40,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:40,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:40,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:40,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:40,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 15:48:40,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 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 15:48:40,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:40,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 15:48:40,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:41,241 INFO L124 PetriNetUnfolderBase]: 2740/5555 cut-off events. [2023-08-03 15:48:41,241 INFO L125 PetriNetUnfolderBase]: For 4264/4281 co-relation queries the response was YES. [2023-08-03 15:48:41,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13184 conditions, 5555 events. 2740/5555 cut-off events. For 4264/4281 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 41211 event pairs, 1298 based on Foata normal form. 17/5225 useless extension candidates. Maximal degree in co-relation 8760. Up to 2729 conditions per place. [2023-08-03 15:48:41,290 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 67 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-03 15:48:41,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 483 flow [2023-08-03 15:48:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-08-03 15:48:41,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2023-08-03 15:48:41,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-08-03 15:48:41,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-08-03 15:48:41,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:41,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-08-03 15:48:41,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 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 15:48:41,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 15:48:41,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 15:48:41,295 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 247 flow. Second operand 3 states and 464 transitions. [2023-08-03 15:48:41,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 483 flow [2023-08-03 15:48:41,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:48:41,301 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 261 flow [2023-08-03 15:48:41,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2023-08-03 15:48:41,302 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-08-03 15:48:41,302 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 261 flow [2023-08-03 15:48:41,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 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 15:48:41,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:41,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:41,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:48:41,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:41,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:41,304 INFO L85 PathProgramCache]: Analyzing trace with hash -887399513, now seen corresponding path program 1 times [2023-08-03 15:48:41,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:41,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759017587] [2023-08-03 15:48:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:41,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:41,360 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 15:48:41,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:41,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759017587] [2023-08-03 15:48:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759017587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:41,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:41,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:41,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861093425] [2023-08-03 15:48:41,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:41,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-08-03 15:48:41,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 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 15:48:41,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:41,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-08-03 15:48:41,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:42,565 INFO L124 PetriNetUnfolderBase]: 5472/10640 cut-off events. [2023-08-03 15:48:42,565 INFO L125 PetriNetUnfolderBase]: For 7529/7550 co-relation queries the response was YES. [2023-08-03 15:48:42,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25655 conditions, 10640 events. 5472/10640 cut-off events. For 7529/7550 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 81823 event pairs, 1068 based on Foata normal form. 142/10539 useless extension candidates. Maximal degree in co-relation 17646. Up to 2844 conditions per place. [2023-08-03 15:48:42,653 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 114 selfloop transitions, 11 changer transitions 6/155 dead transitions. [2023-08-03 15:48:42,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 155 transitions, 829 flow [2023-08-03 15:48:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2023-08-03 15:48:42,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215277777777778 [2023-08-03 15:48:42,656 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2023-08-03 15:48:42,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2023-08-03 15:48:42,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:42,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2023-08-03 15:48:42,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 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 15:48:42,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:42,663 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:42,663 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 261 flow. Second operand 5 states and 751 transitions. [2023-08-03 15:48:42,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 155 transitions, 829 flow [2023-08-03 15:48:42,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 155 transitions, 813 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:48:42,673 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 337 flow [2023-08-03 15:48:42,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-08-03 15:48:42,675 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2023-08-03 15:48:42,675 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 337 flow [2023-08-03 15:48:42,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 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 15:48:42,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:42,675 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:42,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:48:42,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:42,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash -514541892, now seen corresponding path program 1 times [2023-08-03 15:48:42,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:42,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382085769] [2023-08-03 15:48:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:42,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:42,743 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 15:48:42,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:42,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382085769] [2023-08-03 15:48:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382085769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:42,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:42,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:42,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999696477] [2023-08-03 15:48:42,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:42,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:42,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:42,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:42,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-08-03 15:48:42,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 15:48:42,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:42,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-08-03 15:48:42,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:44,287 INFO L124 PetriNetUnfolderBase]: 7470/14633 cut-off events. [2023-08-03 15:48:44,287 INFO L125 PetriNetUnfolderBase]: For 15084/15116 co-relation queries the response was YES. [2023-08-03 15:48:44,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38136 conditions, 14633 events. 7470/14633 cut-off events. For 15084/15116 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 119961 event pairs, 1649 based on Foata normal form. 137/14519 useless extension candidates. Maximal degree in co-relation 25156. Up to 4353 conditions per place. [2023-08-03 15:48:44,362 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 79 selfloop transitions, 9 changer transitions 49/161 dead transitions. [2023-08-03 15:48:44,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 161 transitions, 979 flow [2023-08-03 15:48:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-03 15:48:44,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152777777777777 [2023-08-03 15:48:44,364 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-03 15:48:44,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-03 15:48:44,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:44,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-03 15:48:44,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 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 15:48:44,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:44,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:44,369 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 337 flow. Second operand 5 states and 742 transitions. [2023-08-03 15:48:44,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 161 transitions, 979 flow [2023-08-03 15:48:44,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 979 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:44,382 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 368 flow [2023-08-03 15:48:44,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2023-08-03 15:48:44,383 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2023-08-03 15:48:44,383 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 368 flow [2023-08-03 15:48:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 15:48:44,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:44,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:44,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:48:44,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:44,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:44,385 INFO L85 PathProgramCache]: Analyzing trace with hash -434361986, now seen corresponding path program 1 times [2023-08-03 15:48:44,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309989470] [2023-08-03 15:48:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:44,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:44,647 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 15:48:44,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:44,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309989470] [2023-08-03 15:48:44,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309989470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:44,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:44,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516740592] [2023-08-03 15:48:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:44,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:44,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:44,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:44,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:44,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 288 [2023-08-03 15:48:44,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 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 15:48:44,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:44,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 288 [2023-08-03 15:48:44,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:46,076 INFO L124 PetriNetUnfolderBase]: 6696/13683 cut-off events. [2023-08-03 15:48:46,076 INFO L125 PetriNetUnfolderBase]: For 15611/15725 co-relation queries the response was YES. [2023-08-03 15:48:46,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36555 conditions, 13683 events. 6696/13683 cut-off events. For 15611/15725 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 115516 event pairs, 2078 based on Foata normal form. 42/13172 useless extension candidates. Maximal degree in co-relation 25221. Up to 5118 conditions per place. [2023-08-03 15:48:46,163 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 107 selfloop transitions, 22 changer transitions 0/159 dead transitions. [2023-08-03 15:48:46,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 159 transitions, 1004 flow [2023-08-03 15:48:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-08-03 15:48:46,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263888888888889 [2023-08-03 15:48:46,166 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-08-03 15:48:46,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-08-03 15:48:46,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:46,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-08-03 15:48:46,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 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 15:48:46,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:46,170 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 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 15:48:46,170 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 368 flow. Second operand 5 states and 758 transitions. [2023-08-03 15:48:46,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 159 transitions, 1004 flow [2023-08-03 15:48:46,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 159 transitions, 1000 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:46,187 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 513 flow [2023-08-03 15:48:46,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=513, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2023-08-03 15:48:46,190 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2023-08-03 15:48:46,190 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 513 flow [2023-08-03 15:48:46,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 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 15:48:46,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:46,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:46,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:48:46,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:46,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:46,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1602472234, now seen corresponding path program 2 times [2023-08-03 15:48:46,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:46,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663115162] [2023-08-03 15:48:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:46,255 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 15:48:46,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:46,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663115162] [2023-08-03 15:48:46,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663115162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:46,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:46,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:46,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016461549] [2023-08-03 15:48:46,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:46,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:46,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:46,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:46,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:46,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 15:48:46,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 15:48:46,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:46,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 15:48:46,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:47,642 INFO L124 PetriNetUnfolderBase]: 6599/13484 cut-off events. [2023-08-03 15:48:47,642 INFO L125 PetriNetUnfolderBase]: For 21205/21396 co-relation queries the response was YES. [2023-08-03 15:48:47,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40036 conditions, 13484 events. 6599/13484 cut-off events. For 21205/21396 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 112252 event pairs, 1977 based on Foata normal form. 154/13406 useless extension candidates. Maximal degree in co-relation 29151. Up to 9447 conditions per place. [2023-08-03 15:48:47,754 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 58 selfloop transitions, 3 changer transitions 15/101 dead transitions. [2023-08-03 15:48:47,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 709 flow [2023-08-03 15:48:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:47,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-03 15:48:47,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2023-08-03 15:48:47,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-03 15:48:47,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-03 15:48:47,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:47,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-03 15:48:47,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 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 15:48:47,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 15:48:47,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 15:48:47,760 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 513 flow. Second operand 3 states and 448 transitions. [2023-08-03 15:48:47,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 709 flow [2023-08-03 15:48:47,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 707 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:47,785 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 445 flow [2023-08-03 15:48:47,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2023-08-03 15:48:47,786 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2023-08-03 15:48:47,786 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 445 flow [2023-08-03 15:48:47,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 15:48:47,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:47,787 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:47,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 15:48:47,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:47,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash 22371900, now seen corresponding path program 1 times [2023-08-03 15:48:47,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:47,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830784286] [2023-08-03 15:48:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:47,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:47,924 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 15:48:47,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:47,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830784286] [2023-08-03 15:48:47,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830784286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:47,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:47,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:48:47,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261760176] [2023-08-03 15:48:47,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:47,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:48:47,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:48:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:48:47,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 288 [2023-08-03 15:48:47,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 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 15:48:47,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:47,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 288 [2023-08-03 15:48:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:49,780 INFO L124 PetriNetUnfolderBase]: 8004/16244 cut-off events. [2023-08-03 15:48:49,780 INFO L125 PetriNetUnfolderBase]: For 25280/25507 co-relation queries the response was YES. [2023-08-03 15:48:49,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48344 conditions, 16244 events. 8004/16244 cut-off events. For 25280/25507 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 137570 event pairs, 1173 based on Foata normal form. 67/16064 useless extension candidates. Maximal degree in co-relation 32011. Up to 4397 conditions per place. [2023-08-03 15:48:49,849 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 135 selfloop transitions, 19 changer transitions 9/185 dead transitions. [2023-08-03 15:48:49,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 185 transitions, 1322 flow [2023-08-03 15:48:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:48:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:48:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 990 transitions. [2023-08-03 15:48:49,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-08-03 15:48:49,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 990 transitions. [2023-08-03 15:48:49,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 990 transitions. [2023-08-03 15:48:49,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:49,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 990 transitions. [2023-08-03 15:48:49,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.42857142857142) internal successors, (990), 7 states have internal predecessors, (990), 0 states have call successors, (0), 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 15:48:49,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 0 states have call successors, (0), 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 15:48:49,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 0 states have call successors, (0), 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 15:48:49,867 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 445 flow. Second operand 7 states and 990 transitions. [2023-08-03 15:48:49,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 185 transitions, 1322 flow [2023-08-03 15:48:49,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 185 transitions, 1296 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-03 15:48:49,900 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 585 flow [2023-08-03 15:48:49,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-08-03 15:48:49,902 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2023-08-03 15:48:49,902 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 585 flow [2023-08-03 15:48:49,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 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 15:48:49,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:49,902 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:49,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 15:48:49,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:49,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash 550848058, now seen corresponding path program 2 times [2023-08-03 15:48:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830986184] [2023-08-03 15:48:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:50,041 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 15:48:50,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:50,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830986184] [2023-08-03 15:48:50,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830986184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:50,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:50,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:48:50,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934152177] [2023-08-03 15:48:50,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:50,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:50,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:50,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:50,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:48:50,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 288 [2023-08-03 15:48:50,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 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 15:48:50,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:50,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 288 [2023-08-03 15:48:50,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:51,599 INFO L124 PetriNetUnfolderBase]: 7544/15658 cut-off events. [2023-08-03 15:48:51,599 INFO L125 PetriNetUnfolderBase]: For 25019/25258 co-relation queries the response was YES. [2023-08-03 15:48:51,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45648 conditions, 15658 events. 7544/15658 cut-off events. For 25019/25258 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 134089 event pairs, 1542 based on Foata normal form. 127/15553 useless extension candidates. Maximal degree in co-relation 45211. Up to 6737 conditions per place. [2023-08-03 15:48:51,695 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 79 selfloop transitions, 5 changer transitions 58/164 dead transitions. [2023-08-03 15:48:51,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 164 transitions, 1200 flow [2023-08-03 15:48:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:48:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:48:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 844 transitions. [2023-08-03 15:48:51,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2023-08-03 15:48:51,698 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 844 transitions. [2023-08-03 15:48:51,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 844 transitions. [2023-08-03 15:48:51,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:51,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 844 transitions. [2023-08-03 15:48:51,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 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 15:48:51,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:51,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:51,703 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 585 flow. Second operand 6 states and 844 transitions. [2023-08-03 15:48:51,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 164 transitions, 1200 flow [2023-08-03 15:48:51,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1170 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-03 15:48:51,733 INFO L231 Difference]: Finished difference. Result has 98 places, 77 transitions, 413 flow [2023-08-03 15:48:51,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=413, PETRI_PLACES=98, PETRI_TRANSITIONS=77} [2023-08-03 15:48:51,734 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2023-08-03 15:48:51,734 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 77 transitions, 413 flow [2023-08-03 15:48:51,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.6) internal successors, (643), 5 states have internal predecessors, (643), 0 states have call successors, (0), 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 15:48:51,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:51,734 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:51,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 15:48:51,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:48:51,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:51,735 INFO L85 PathProgramCache]: Analyzing trace with hash -144320426, now seen corresponding path program 3 times [2023-08-03 15:48:51,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:51,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112811164] [2023-08-03 15:48:51,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:51,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:52,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:52,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112811164] [2023-08-03 15:48:52,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112811164] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:48:52,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533481893] [2023-08-03 15:48:52,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 15:48:52,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:52,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:52,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:48:52,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 15:48:52,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 15:48:52,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:48:52,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-03 15:48:52,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:52,249 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 15:48:52,250 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 15:48:52,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 15:48:52,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 15:48:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:52,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:48:52,429 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 15:48:52,429 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-08-03 15:48:52,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-03 15:48:52,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 15:48:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:52,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533481893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:48:52,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:48:52,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-03 15:48:52,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365342513] [2023-08-03 15:48:52,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:48:52,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 15:48:52,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:52,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 15:48:52,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-08-03 15:48:52,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 288 [2023-08-03 15:48:52,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 77 transitions, 413 flow. Second operand has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 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 15:48:52,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:52,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 288 [2023-08-03 15:48:52,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:52,775 INFO L124 PetriNetUnfolderBase]: 220/604 cut-off events. [2023-08-03 15:48:52,775 INFO L125 PetriNetUnfolderBase]: For 933/950 co-relation queries the response was YES. [2023-08-03 15:48:52,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 604 events. 220/604 cut-off events. For 933/950 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3011 event pairs, 47 based on Foata normal form. 20/623 useless extension candidates. Maximal degree in co-relation 1830. Up to 128 conditions per place. [2023-08-03 15:48:52,778 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2023-08-03 15:48:52,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 664 flow [2023-08-03 15:48:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 15:48:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 15:48:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1081 transitions. [2023-08-03 15:48:52,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691840277777778 [2023-08-03 15:48:52,790 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1081 transitions. [2023-08-03 15:48:52,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1081 transitions. [2023-08-03 15:48:52,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:52,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1081 transitions. [2023-08-03 15:48:52,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.125) internal successors, (1081), 8 states have internal predecessors, (1081), 0 states have call successors, (0), 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 15:48:52,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 288.0) internal successors, (2592), 9 states have internal predecessors, (2592), 0 states have call successors, (0), 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 15:48:52,796 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 288.0) internal successors, (2592), 9 states have internal predecessors, (2592), 0 states have call successors, (0), 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 15:48:52,796 INFO L175 Difference]: Start difference. First operand has 98 places, 77 transitions, 413 flow. Second operand 8 states and 1081 transitions. [2023-08-03 15:48:52,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 664 flow [2023-08-03 15:48:52,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 623 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-08-03 15:48:52,800 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2023-08-03 15:48:52,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2023-08-03 15:48:52,801 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2023-08-03 15:48:52,801 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2023-08-03 15:48:52,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 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 15:48:52,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:48:52,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:48:52,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:48:52,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:48:52,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:48:53,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 15:48:53,009 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:53,012 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:48:53,012 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:48:53,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:48:53 BasicIcfg [2023-08-03 15:48:53,017 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:48:53,017 INFO L158 Benchmark]: Toolchain (without parser) took 26270.94ms. Allocated memory was 343.9MB in the beginning and 3.7GB in the end (delta: 3.3GB). Free memory was 293.6MB in the beginning and 3.0GB in the end (delta: -2.7GB). Peak memory consumption was 562.9MB. Max. memory is 16.0GB. [2023-08-03 15:48:53,017 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 297.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:48:53,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.55ms. Allocated memory is still 343.9MB. Free memory was 293.3MB in the beginning and 272.7MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:48:53,018 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.45ms. Allocated memory is still 343.9MB. Free memory was 272.7MB in the beginning and 270.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:53,018 INFO L158 Benchmark]: Boogie Preprocessor took 40.40ms. Allocated memory is still 343.9MB. Free memory was 270.3MB in the beginning and 268.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:53,018 INFO L158 Benchmark]: RCFGBuilder took 591.32ms. Allocated memory was 343.9MB in the beginning and 471.9MB in the end (delta: 127.9MB). Free memory was 268.6MB in the beginning and 414.7MB in the end (delta: -146.1MB). Peak memory consumption was 19.8MB. Max. memory is 16.0GB. [2023-08-03 15:48:53,019 INFO L158 Benchmark]: TraceAbstraction took 25109.90ms. Allocated memory was 471.9MB in the beginning and 3.7GB in the end (delta: 3.2GB). Free memory was 413.9MB in the beginning and 3.0GB in the end (delta: -2.6GB). Peak memory consumption was 553.5MB. Max. memory is 16.0GB. [2023-08-03 15:48:53,022 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 297.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 457.55ms. Allocated memory is still 343.9MB. Free memory was 293.3MB in the beginning and 272.7MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.45ms. Allocated memory is still 343.9MB. Free memory was 272.7MB in the beginning and 270.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.40ms. Allocated memory is still 343.9MB. Free memory was 270.3MB in the beginning and 268.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 591.32ms. Allocated memory was 343.9MB in the beginning and 471.9MB in the end (delta: 127.9MB). Free memory was 268.6MB in the beginning and 414.7MB in the end (delta: -146.1MB). Peak memory consumption was 19.8MB. Max. memory is 16.0GB. * TraceAbstraction took 25109.90ms. Allocated memory was 471.9MB in the beginning and 3.7GB in the end (delta: 3.2GB). Free memory was 413.9MB in the beginning and 3.0GB in the end (delta: -2.6GB). Peak memory consumption was 553.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 256]: Unsoundness Warning unspecified type, defaulting to int C: short [256] - GenericResultAtLocation [Line: 256]: Unsoundness Warning unspecified type, defaulting to int C: short [256] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 96 PlacesBefore, 17 PlacesAfterwards, 100 TransitionsBefore, 17 TransitionsAfterwards, 1984 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 99 TotalNumberOfCompositions, 1726 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1518, independent: 1471, independent conditional: 0, independent unconditional: 1471, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1073, independent: 1049, independent conditional: 0, independent unconditional: 1049, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1518, independent: 422, independent conditional: 0, independent unconditional: 422, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 1073, unknown conditional: 0, unknown unconditional: 1073] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 155 PlacesBefore, 53 PlacesAfterwards, 163 TransitionsBefore, 58 TransitionsAfterwards, 11780 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 79 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 23811 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10674, independent: 10291, independent conditional: 0, independent unconditional: 10291, dependent: 383, dependent conditional: 0, dependent unconditional: 383, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5875, independent: 5809, independent conditional: 0, independent unconditional: 5809, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10674, independent: 4482, independent conditional: 0, independent unconditional: 4482, dependent: 317, dependent conditional: 0, dependent unconditional: 317, unknown: 5875, unknown conditional: 0, unknown unconditional: 5875] , Statistics on independence cache: Total cache size (in pairs): 358, Positive cache size: 326, Positive conditional cache size: 0, Positive unconditional cache size: 326, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 749]: 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, 151 locations, 3 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: 5.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 208 locations, 4 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: 19.5s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 795 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 689 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 98 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2104 IncrementalHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 44 mSDtfsCounter, 2104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=585occurred in iteration=10, InterpolantAutomatonStates: 58, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 311 ConstructedInterpolants, 3 QuantifiedInterpolants, 794 SizeOfPredicates, 6 NumberOfNonLiveVariables, 404 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 26/34 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:48:53,053 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...