/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_42-trylock2_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:50:53,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:50:53,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:50:53,957 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:50:53,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:50:53,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:50:53,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:50:53,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:50:53,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:50:53,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:50:53,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:50:53,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:50:53,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:50:53,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:50:53,995 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:50:53,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:50:53,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:50:53,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:50:53,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:50:53,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:50:53,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:50:53,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:50:53,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:50:53,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:50:53,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:50:53,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:50:53,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:50:54,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:50:54,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:50:54,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:50:54,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:50:54,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:50:54,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:50:54,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:50:54,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:50:54,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:50:54,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:50:54,002 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:50:54,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:50:54,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:50:54,003 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:50:54,003 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 03:50:54,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:50:54,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:50:54,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:50:54,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:50:54,280 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:50:54,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_42-trylock2_racefree_bound2.i [2023-08-04 03:50:55,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:50:55,718 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:50:55,719 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_42-trylock2_racefree_bound2.i [2023-08-04 03:50:55,742 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c1c21935/348b78287a324bd5bd0f87fa69d2e2c2/FLAG879e03051 [2023-08-04 03:50:55,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c1c21935/348b78287a324bd5bd0f87fa69d2e2c2 [2023-08-04 03:50:55,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:50:55,756 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:50:55,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:50:55,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:50:55,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:50:55,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:50:55" (1/1) ... [2023-08-04 03:50:55,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19df632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:55, skipping insertion in model container [2023-08-04 03:50:55,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:50:55" (1/1) ... [2023-08-04 03:50:55,823 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:50:56,030 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/goblint-regression_28-race_reach_42-trylock2_racefree_bound2.i[30176,30189] [2023-08-04 03:50:56,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:50:56,083 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:50:56,111 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 03:50:56,113 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 03:50:56,135 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/goblint-regression_28-race_reach_42-trylock2_racefree_bound2.i[30176,30189] [2023-08-04 03:50:56,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:50:56,189 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:50:56,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56 WrapperNode [2023-08-04 03:50:56,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:50:56,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:50:56,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:50:56,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:50:56,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,228 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 130 [2023-08-04 03:50:56,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:50:56,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:50:56,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:50:56,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:50:56,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:50:56,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:50:56,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:50:56,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:50:56,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (1/1) ... [2023-08-04 03:50:56,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:50:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:50:56,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 03:50:56,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 03:50:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:50:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:50:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 03:50:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:50:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:50:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 03:50:56,331 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 03:50:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:50:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-04 03:50:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:50:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:50:56,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:50:56,333 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 03:50:56,441 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:50:56,443 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:50:56,683 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:50:56,691 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:50:56,691 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-04 03:50:56,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:50:56 BoogieIcfgContainer [2023-08-04 03:50:56,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:50:56,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:50:56,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:50:56,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:50:56,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:50:55" (1/3) ... [2023-08-04 03:50:56,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef4f28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:50:56, skipping insertion in model container [2023-08-04 03:50:56,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:50:56" (2/3) ... [2023-08-04 03:50:56,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef4f28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:50:56, skipping insertion in model container [2023-08-04 03:50:56,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:50:56" (3/3) ... [2023-08-04 03:50:56,723 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_42-trylock2_racefree_bound2.i [2023-08-04 03:50:56,731 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:50:56,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:50:56,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-04 03:50:56,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:50:56,830 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 03:50:56,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 184 transitions, 376 flow [2023-08-04 03:50:56,931 INFO L124 PetriNetUnfolderBase]: 45/269 cut-off events. [2023-08-04 03:50:56,931 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:50:56,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 269 events. 45/269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1001 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-08-04 03:50:56,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 184 transitions, 376 flow [2023-08-04 03:50:56,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 179 transitions, 363 flow [2023-08-04 03:50:56,947 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:50:56,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 179 transitions, 363 flow [2023-08-04 03:50:56,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 179 transitions, 363 flow [2023-08-04 03:50:56,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 179 transitions, 363 flow [2023-08-04 03:50:57,000 INFO L124 PetriNetUnfolderBase]: 44/264 cut-off events. [2023-08-04 03:50:57,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:50:57,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 44/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 985 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-08-04 03:50:57,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 9646 [2023-08-04 03:51:00,230 INFO L134 LiptonReduction]: Checked pairs total: 21000 [2023-08-04 03:51:00,230 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-04 03:51:00,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:51:00,248 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;@118ed3be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:51:00,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 03:51:00,251 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:51:00,251 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 03:51:00,251 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:00,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:00,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 03:51:00,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:00,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:00,257 INFO L85 PathProgramCache]: Analyzing trace with hash 21768335, now seen corresponding path program 1 times [2023-08-04 03:51:00,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:00,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498865408] [2023-08-04 03:51:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:00,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:00,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:00,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498865408] [2023-08-04 03:51:00,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498865408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:00,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:00,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:51:00,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83908951] [2023-08-04 03:51:00,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:00,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:00,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 321 [2023-08-04 03:51:00,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 75 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:00,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:00,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 321 [2023-08-04 03:51:00,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:00,753 INFO L124 PetriNetUnfolderBase]: 399/884 cut-off events. [2023-08-04 03:51:00,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:00,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 884 events. 399/884 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4262 event pairs, 333 based on Foata normal form. 131/872 useless extension candidates. Maximal degree in co-relation 1689. Up to 796 conditions per place. [2023-08-04 03:51:00,759 INFO L140 encePairwiseOnDemand]: 294/321 looper letters, 49 selfloop transitions, 2 changer transitions 8/66 dead transitions. [2023-08-04 03:51:00,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 253 flow [2023-08-04 03:51:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-04 03:51:00,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565939771547248 [2023-08-04 03:51:00,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-04 03:51:00,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-04 03:51:00,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:00,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-04 03:51:00,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:00,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:00,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:00,789 INFO L175 Difference]: Start difference. First operand has 54 places, 75 transitions, 155 flow. Second operand 3 states and 536 transitions. [2023-08-04 03:51:00,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 253 flow [2023-08-04 03:51:00,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 253 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:51:00,794 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 97 flow [2023-08-04 03:51:00,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-04 03:51:00,798 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-08-04 03:51:00,798 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 97 flow [2023-08-04 03:51:00,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:00,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:00,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:00,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:51:00,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:00,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash -200444206, now seen corresponding path program 1 times [2023-08-04 03:51:00,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:00,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755758594] [2023-08-04 03:51:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:00,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:00,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755758594] [2023-08-04 03:51:00,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755758594] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:51:00,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238466085] [2023-08-04 03:51:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:00,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:00,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:51:00,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:51:00,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 03:51:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:00,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:51:00,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:51:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:01,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:51:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238466085] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:51:01,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:51:01,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:51:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971908553] [2023-08-04 03:51:01,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:51:01,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:51:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:51:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:51:01,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 321 [2023-08-04 03:51:01,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:01,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:01,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 321 [2023-08-04 03:51:01,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:01,103 INFO L124 PetriNetUnfolderBase]: 30/87 cut-off events. [2023-08-04 03:51:01,103 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-04 03:51:01,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 87 events. 30/87 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 134 event pairs, 14 based on Foata normal form. 16/103 useless extension candidates. Maximal degree in co-relation 193. Up to 62 conditions per place. [2023-08-04 03:51:01,104 INFO L140 encePairwiseOnDemand]: 318/321 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-04 03:51:01,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 155 flow [2023-08-04 03:51:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:51:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:51:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 620 transitions. [2023-08-04 03:51:01,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48286604361370716 [2023-08-04 03:51:01,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 620 transitions. [2023-08-04 03:51:01,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 620 transitions. [2023-08-04 03:51:01,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:01,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 620 transitions. [2023-08-04 03:51:01,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:01,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:01,112 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:01,112 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 97 flow. Second operand 4 states and 620 transitions. [2023-08-04 03:51:01,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 155 flow [2023-08-04 03:51:01,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 149 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 03:51:01,114 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-04 03:51:01,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-04 03:51:01,114 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -26 predicate places. [2023-08-04 03:51:01,115 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-04 03:51:01,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:01,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 03:51:01,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 03:51:01,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 03:51:01,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 03:51:01,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 03:51:01,323 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 [2023-08-04 03:51:01,324 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 03:51:01,326 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 03:51:01,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 184 transitions, 376 flow [2023-08-04 03:51:01,362 INFO L124 PetriNetUnfolderBase]: 45/269 cut-off events. [2023-08-04 03:51:01,362 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:51:01,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 269 events. 45/269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1001 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-08-04 03:51:01,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 184 transitions, 376 flow [2023-08-04 03:51:01,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 179 transitions, 363 flow [2023-08-04 03:51:01,367 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:51:01,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 179 transitions, 363 flow [2023-08-04 03:51:01,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 179 transitions, 363 flow [2023-08-04 03:51:01,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 179 transitions, 363 flow [2023-08-04 03:51:01,393 INFO L124 PetriNetUnfolderBase]: 44/264 cut-off events. [2023-08-04 03:51:01,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:01,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 44/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 985 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 143. Up to 6 conditions per place. [2023-08-04 03:51:01,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 9646 [2023-08-04 03:51:04,542 INFO L134 LiptonReduction]: Checked pairs total: 22732 [2023-08-04 03:51:04,542 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-04 03:51:04,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:51:04,545 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;@118ed3be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:51:04,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:51:04,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:51:04,549 INFO L124 PetriNetUnfolderBase]: 5/33 cut-off events. [2023-08-04 03:51:04,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:04,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:04,549 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 03:51:04,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:51:04,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:04,550 INFO L85 PathProgramCache]: Analyzing trace with hash -660859190, now seen corresponding path program 1 times [2023-08-04 03:51:04,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:04,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552717322] [2023-08-04 03:51:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:04,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:51:04,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:51:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:51:04,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:51:04,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:51:04,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 03:51:04,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:51:04,632 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:51:04,634 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 03:51:04,634 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:51:04,634 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:51:04,666 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 03:51:04,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:04,707 INFO L124 PetriNetUnfolderBase]: 76/433 cut-off events. [2023-08-04 03:51:04,707 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:51:04,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 433 events. 76/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 271. Up to 9 conditions per place. [2023-08-04 03:51:04,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:04,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:04,715 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:51:04,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:04,715 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:04,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:04,757 INFO L124 PetriNetUnfolderBase]: 76/433 cut-off events. [2023-08-04 03:51:04,757 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:51:04,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 433 events. 76/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 271. Up to 9 conditions per place. [2023-08-04 03:51:04,775 INFO L119 LiptonReduction]: Number of co-enabled transitions 26076 [2023-08-04 03:51:07,758 INFO L134 LiptonReduction]: Checked pairs total: 72714 [2023-08-04 03:51:07,759 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-04 03:51:07,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:51:07,761 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;@118ed3be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:51:07,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 03:51:07,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:51:07,763 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 03:51:07,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:07,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:07,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 03:51:07,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:07,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash 40176146, now seen corresponding path program 1 times [2023-08-04 03:51:07,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:07,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478889181] [2023-08-04 03:51:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:07,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478889181] [2023-08-04 03:51:07,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478889181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:07,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:07,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:51:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917297779] [2023-08-04 03:51:07,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:07,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:07,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:07,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:07,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:07,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 401 [2023-08-04 03:51:07,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 119 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:07,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:07,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 401 [2023-08-04 03:51:07,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:09,876 INFO L124 PetriNetUnfolderBase]: 13704/23220 cut-off events. [2023-08-04 03:51:09,877 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-04 03:51:09,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44433 conditions, 23220 events. 13704/23220 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 172327 event pairs, 12690 based on Foata normal form. 5540/26053 useless extension candidates. Maximal degree in co-relation 37055. Up to 21102 conditions per place. [2023-08-04 03:51:10,008 INFO L140 encePairwiseOnDemand]: 363/401 looper letters, 68 selfloop transitions, 2 changer transitions 11/99 dead transitions. [2023-08-04 03:51:10,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 374 flow [2023-08-04 03:51:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2023-08-04 03:51:10,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743973399833749 [2023-08-04 03:51:10,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 691 transitions. [2023-08-04 03:51:10,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 691 transitions. [2023-08-04 03:51:10,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:10,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 691 transitions. [2023-08-04 03:51:10,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:10,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:10,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:10,027 INFO L175 Difference]: Start difference. First operand has 86 places, 119 transitions, 256 flow. Second operand 3 states and 691 transitions. [2023-08-04 03:51:10,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 374 flow [2023-08-04 03:51:10,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 99 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:51:10,033 INFO L231 Difference]: Finished difference. Result has 87 places, 72 transitions, 162 flow [2023-08-04 03:51:10,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=87, PETRI_TRANSITIONS=72} [2023-08-04 03:51:10,035 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-08-04 03:51:10,035 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 72 transitions, 162 flow [2023-08-04 03:51:10,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:10,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:10,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:10,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 03:51:10,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:10,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash -820951602, now seen corresponding path program 1 times [2023-08-04 03:51:10,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:10,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293029355] [2023-08-04 03:51:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:10,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:10,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:10,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293029355] [2023-08-04 03:51:10,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293029355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:51:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046440213] [2023-08-04 03:51:10,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:10,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:10,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:51:10,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:51:10,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 03:51:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:10,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:51:10,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:51:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:10,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:51:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:10,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046440213] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:51:10,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:51:10,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:51:10,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953801980] [2023-08-04 03:51:10,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:51:10,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:51:10,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:51:10,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:51:10,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 401 [2023-08-04 03:51:10,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 72 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 189.2) internal successors, (946), 5 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:10,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:10,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 401 [2023-08-04 03:51:10,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:11,608 INFO L124 PetriNetUnfolderBase]: 9646/15799 cut-off events. [2023-08-04 03:51:11,609 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-08-04 03:51:11,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31216 conditions, 15799 events. 9646/15799 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 112896 event pairs, 702 based on Foata normal form. 16/14775 useless extension candidates. Maximal degree in co-relation 29115. Up to 13505 conditions per place. [2023-08-04 03:51:11,703 INFO L140 encePairwiseOnDemand]: 397/401 looper letters, 97 selfloop transitions, 3 changer transitions 1/119 dead transitions. [2023-08-04 03:51:11,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 458 flow [2023-08-04 03:51:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:51:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:51:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 850 transitions. [2023-08-04 03:51:11,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529925187032419 [2023-08-04 03:51:11,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 850 transitions. [2023-08-04 03:51:11,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 850 transitions. [2023-08-04 03:51:11,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:11,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 850 transitions. [2023-08-04 03:51:11,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:11,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:11,713 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:11,713 INFO L175 Difference]: Start difference. First operand has 87 places, 72 transitions, 162 flow. Second operand 4 states and 850 transitions. [2023-08-04 03:51:11,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 458 flow [2023-08-04 03:51:11,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:11,718 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 174 flow [2023-08-04 03:51:11,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2023-08-04 03:51:11,721 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-04 03:51:11,721 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 174 flow [2023-08-04 03:51:11,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.2) internal successors, (946), 5 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:11,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:11,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:11,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 03:51:11,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:11,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:11,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1321853911, now seen corresponding path program 1 times [2023-08-04 03:51:11,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:11,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782694205] [2023-08-04 03:51:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:11,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:12,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:12,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782694205] [2023-08-04 03:51:12,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782694205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:12,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:12,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 03:51:12,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210555610] [2023-08-04 03:51:12,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:12,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:12,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:12,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:12,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 401 [2023-08-04 03:51:12,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:12,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:12,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 401 [2023-08-04 03:51:12,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:13,096 INFO L124 PetriNetUnfolderBase]: 9821/16441 cut-off events. [2023-08-04 03:51:13,097 INFO L125 PetriNetUnfolderBase]: For 2452/2452 co-relation queries the response was YES. [2023-08-04 03:51:13,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32785 conditions, 16441 events. 9821/16441 cut-off events. For 2452/2452 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 117487 event pairs, 4274 based on Foata normal form. 9/15065 useless extension candidates. Maximal degree in co-relation 28430. Up to 14602 conditions per place. [2023-08-04 03:51:13,174 INFO L140 encePairwiseOnDemand]: 395/401 looper letters, 76 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-08-04 03:51:13,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 97 transitions, 404 flow [2023-08-04 03:51:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-04 03:51:13,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328345802161264 [2023-08-04 03:51:13,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-04 03:51:13,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-04 03:51:13,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:13,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-04 03:51:13,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:13,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:13,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:13,182 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 174 flow. Second operand 3 states and 641 transitions. [2023-08-04 03:51:13,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 97 transitions, 404 flow [2023-08-04 03:51:13,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 97 transitions, 392 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 03:51:13,187 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 190 flow [2023-08-04 03:51:13,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2023-08-04 03:51:13,191 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-04 03:51:13,191 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 190 flow [2023-08-04 03:51:13,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:13,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:13,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:13,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 03:51:13,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:13,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash 587807410, now seen corresponding path program 1 times [2023-08-04 03:51:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:13,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569691830] [2023-08-04 03:51:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:51:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569691830] [2023-08-04 03:51:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569691830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:13,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:13,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:51:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267540435] [2023-08-04 03:51:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:13,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 03:51:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 03:51:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 03:51:13,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 401 [2023-08-04 03:51:13,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:13,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:13,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 401 [2023-08-04 03:51:13,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:14,090 INFO L124 PetriNetUnfolderBase]: 4134/7894 cut-off events. [2023-08-04 03:51:14,090 INFO L125 PetriNetUnfolderBase]: For 1832/1832 co-relation queries the response was YES. [2023-08-04 03:51:14,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16024 conditions, 7894 events. 4134/7894 cut-off events. For 1832/1832 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 58253 event pairs, 1689 based on Foata normal form. 566/8123 useless extension candidates. Maximal degree in co-relation 12044. Up to 4718 conditions per place. [2023-08-04 03:51:14,132 INFO L140 encePairwiseOnDemand]: 390/401 looper letters, 93 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2023-08-04 03:51:14,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 122 transitions, 517 flow [2023-08-04 03:51:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:51:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:51:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 820 transitions. [2023-08-04 03:51:14,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112219451371571 [2023-08-04 03:51:14,135 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 820 transitions. [2023-08-04 03:51:14,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 820 transitions. [2023-08-04 03:51:14,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:14,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 820 transitions. [2023-08-04 03:51:14,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,140 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 190 flow. Second operand 4 states and 820 transitions. [2023-08-04 03:51:14,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 122 transitions, 517 flow [2023-08-04 03:51:14,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 122 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:14,144 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 243 flow [2023-08-04 03:51:14,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-08-04 03:51:14,145 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-04 03:51:14,145 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 243 flow [2023-08-04 03:51:14,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:14,145 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:14,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 03:51:14,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:14,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:14,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1738239407, now seen corresponding path program 1 times [2023-08-04 03:51:14,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:14,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384276621] [2023-08-04 03:51:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:14,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:14,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:14,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384276621] [2023-08-04 03:51:14,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384276621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:14,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:14,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 03:51:14,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332365936] [2023-08-04 03:51:14,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:14,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:14,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:14,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:14,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:14,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 401 [2023-08-04 03:51:14,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:14,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 401 [2023-08-04 03:51:14,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:14,935 INFO L124 PetriNetUnfolderBase]: 5048/9191 cut-off events. [2023-08-04 03:51:14,935 INFO L125 PetriNetUnfolderBase]: For 3256/3256 co-relation queries the response was YES. [2023-08-04 03:51:14,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20950 conditions, 9191 events. 5048/9191 cut-off events. For 3256/3256 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 64633 event pairs, 1459 based on Foata normal form. 0/8791 useless extension candidates. Maximal degree in co-relation 16183. Up to 7053 conditions per place. [2023-08-04 03:51:14,979 INFO L140 encePairwiseOnDemand]: 397/401 looper letters, 104 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2023-08-04 03:51:14,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 594 flow [2023-08-04 03:51:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-04 03:51:14,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477971737323358 [2023-08-04 03:51:14,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-04 03:51:14,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-04 03:51:14,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:14,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-04 03:51:14,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,986 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 243 flow. Second operand 3 states and 659 transitions. [2023-08-04 03:51:14,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 594 flow [2023-08-04 03:51:14,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 593 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:14,992 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 261 flow [2023-08-04 03:51:14,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2023-08-04 03:51:14,993 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-08-04 03:51:14,993 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 261 flow [2023-08-04 03:51:14,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:14,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:14,994 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:14,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 03:51:14,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:14,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1696270901, now seen corresponding path program 1 times [2023-08-04 03:51:14,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:14,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702873580] [2023-08-04 03:51:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:14,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:51:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702873580] [2023-08-04 03:51:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702873580] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:51:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735709429] [2023-08-04 03:51:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:15,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:15,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:51:15,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:51:15,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 03:51:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:15,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 03:51:15,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:51:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:51:15,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:51:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:51:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735709429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:51:15,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:51:15,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-04 03:51:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279577861] [2023-08-04 03:51:15,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:51:15,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 03:51:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 03:51:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:51:15,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 401 [2023-08-04 03:51:15,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 185.83333333333334) internal successors, (1115), 6 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:15,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:15,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 401 [2023-08-04 03:51:15,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:16,115 INFO L124 PetriNetUnfolderBase]: 4198/8173 cut-off events. [2023-08-04 03:51:16,115 INFO L125 PetriNetUnfolderBase]: For 3069/3069 co-relation queries the response was YES. [2023-08-04 03:51:16,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18816 conditions, 8173 events. 4198/8173 cut-off events. For 3069/3069 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 60698 event pairs, 1655 based on Foata normal form. 49/7998 useless extension candidates. Maximal degree in co-relation 13610. Up to 6413 conditions per place. [2023-08-04 03:51:16,158 INFO L140 encePairwiseOnDemand]: 392/401 looper letters, 106 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2023-08-04 03:51:16,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 132 transitions, 666 flow [2023-08-04 03:51:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 03:51:16,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 03:51:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1199 transitions. [2023-08-04 03:51:16,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49833748960931007 [2023-08-04 03:51:16,162 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1199 transitions. [2023-08-04 03:51:16,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1199 transitions. [2023-08-04 03:51:16,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:16,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1199 transitions. [2023-08-04 03:51:16,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.83333333333334) internal successors, (1199), 6 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:16,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 401.0) internal successors, (2807), 7 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:16,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 401.0) internal successors, (2807), 7 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:16,170 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 261 flow. Second operand 6 states and 1199 transitions. [2023-08-04 03:51:16,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 132 transitions, 666 flow [2023-08-04 03:51:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:16,175 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 299 flow [2023-08-04 03:51:16,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-08-04 03:51:16,176 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2023-08-04 03:51:16,176 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 299 flow [2023-08-04 03:51:16,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.83333333333334) internal successors, (1115), 6 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:16,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:16,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:16,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 03:51:16,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:16,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:16,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -187681836, now seen corresponding path program 1 times [2023-08-04 03:51:16,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:16,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130960179] [2023-08-04 03:51:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:16,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:16,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130960179] [2023-08-04 03:51:16,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130960179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:16,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:16,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 03:51:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590466805] [2023-08-04 03:51:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:16,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 03:51:16,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:16,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 03:51:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:51:16,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 401 [2023-08-04 03:51:16,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:16,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:16,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 401 [2023-08-04 03:51:16,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:17,321 INFO L124 PetriNetUnfolderBase]: 4361/8449 cut-off events. [2023-08-04 03:51:17,321 INFO L125 PetriNetUnfolderBase]: For 4162/4162 co-relation queries the response was YES. [2023-08-04 03:51:17,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20046 conditions, 8449 events. 4361/8449 cut-off events. For 4162/4162 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 62440 event pairs, 3089 based on Foata normal form. 50/8230 useless extension candidates. Maximal degree in co-relation 10974. Up to 6773 conditions per place. [2023-08-04 03:51:17,375 INFO L140 encePairwiseOnDemand]: 392/401 looper letters, 107 selfloop transitions, 7 changer transitions 0/131 dead transitions. [2023-08-04 03:51:17,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 684 flow [2023-08-04 03:51:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 03:51:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 03:51:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1199 transitions. [2023-08-04 03:51:17,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49833748960931007 [2023-08-04 03:51:17,379 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1199 transitions. [2023-08-04 03:51:17,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1199 transitions. [2023-08-04 03:51:17,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:17,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1199 transitions. [2023-08-04 03:51:17,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.83333333333334) internal successors, (1199), 6 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:17,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 401.0) internal successors, (2807), 7 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:17,387 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 401.0) internal successors, (2807), 7 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:17,387 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 299 flow. Second operand 6 states and 1199 transitions. [2023-08-04 03:51:17,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 131 transitions, 684 flow [2023-08-04 03:51:17,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:17,395 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 337 flow [2023-08-04 03:51:17,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2023-08-04 03:51:17,397 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 15 predicate places. [2023-08-04 03:51:17,397 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 337 flow [2023-08-04 03:51:17,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:17,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:17,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:17,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 03:51:17,398 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:17,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1974758859, now seen corresponding path program 1 times [2023-08-04 03:51:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939085464] [2023-08-04 03:51:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:17,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939085464] [2023-08-04 03:51:17,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939085464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:17,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:17,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:51:17,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59786180] [2023-08-04 03:51:17,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:17,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:17,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:17,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:17,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 401 [2023-08-04 03:51:17,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:17,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:17,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 401 [2023-08-04 03:51:17,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:18,450 INFO L124 PetriNetUnfolderBase]: 7545/14230 cut-off events. [2023-08-04 03:51:18,450 INFO L125 PetriNetUnfolderBase]: For 8264/8264 co-relation queries the response was YES. [2023-08-04 03:51:18,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35972 conditions, 14230 events. 7545/14230 cut-off events. For 8264/8264 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 108971 event pairs, 2790 based on Foata normal form. 1610/15367 useless extension candidates. Maximal degree in co-relation 28040. Up to 7233 conditions per place. [2023-08-04 03:51:18,540 INFO L140 encePairwiseOnDemand]: 372/401 looper letters, 95 selfloop transitions, 35 changer transitions 0/143 dead transitions. [2023-08-04 03:51:18,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 143 transitions, 807 flow [2023-08-04 03:51:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:18,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-08-04 03:51:18,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49875311720698257 [2023-08-04 03:51:18,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-08-04 03:51:18,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-08-04 03:51:18,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:18,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-08-04 03:51:18,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:18,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:18,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:18,547 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 337 flow. Second operand 3 states and 600 transitions. [2023-08-04 03:51:18,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 143 transitions, 807 flow [2023-08-04 03:51:18,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 143 transitions, 800 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:51:18,566 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 558 flow [2023-08-04 03:51:18,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2023-08-04 03:51:18,567 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 16 predicate places. [2023-08-04 03:51:18,567 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 558 flow [2023-08-04 03:51:18,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:18,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:18,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2023-08-04 03:51:18,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 03:51:18,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:18,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1087644453, now seen corresponding path program 1 times [2023-08-04 03:51:18,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:18,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666651890] [2023-08-04 03:51:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:18,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:18,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:18,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666651890] [2023-08-04 03:51:18,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666651890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:18,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:18,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 03:51:18,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18839013] [2023-08-04 03:51:18,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:18,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:51:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:18,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:51:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:51:18,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 401 [2023-08-04 03:51:18,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:18,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:18,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 401 [2023-08-04 03:51:18,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:19,723 INFO L124 PetriNetUnfolderBase]: 5651/11021 cut-off events. [2023-08-04 03:51:19,723 INFO L125 PetriNetUnfolderBase]: For 9722/9760 co-relation queries the response was YES. [2023-08-04 03:51:19,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33876 conditions, 11021 events. 5651/11021 cut-off events. For 9722/9760 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 83112 event pairs, 1824 based on Foata normal form. 149/10786 useless extension candidates. Maximal degree in co-relation 28858. Up to 8291 conditions per place. [2023-08-04 03:51:19,797 INFO L140 encePairwiseOnDemand]: 393/401 looper letters, 98 selfloop transitions, 15 changer transitions 0/134 dead transitions. [2023-08-04 03:51:19,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 134 transitions, 875 flow [2023-08-04 03:51:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:51:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:51:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 738 transitions. [2023-08-04 03:51:19,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600997506234414 [2023-08-04 03:51:19,799 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 738 transitions. [2023-08-04 03:51:19,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 738 transitions. [2023-08-04 03:51:19,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:19,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 738 transitions. [2023-08-04 03:51:19,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:19,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:19,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:19,804 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 558 flow. Second operand 4 states and 738 transitions. [2023-08-04 03:51:19,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 134 transitions, 875 flow [2023-08-04 03:51:19,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 134 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:19,824 INFO L231 Difference]: Finished difference. Result has 104 places, 109 transitions, 541 flow [2023-08-04 03:51:19,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=541, PETRI_PLACES=104, PETRI_TRANSITIONS=109} [2023-08-04 03:51:19,825 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 18 predicate places. [2023-08-04 03:51:19,825 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 109 transitions, 541 flow [2023-08-04 03:51:19,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:19,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:19,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1] [2023-08-04 03:51:19,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 03:51:19,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:19,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash -946353524, now seen corresponding path program 1 times [2023-08-04 03:51:19,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:19,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803084115] [2023-08-04 03:51:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:20,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:20,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803084115] [2023-08-04 03:51:20,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803084115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:20,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:20,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 03:51:20,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206761258] [2023-08-04 03:51:20,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:20,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 03:51:20,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:20,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 03:51:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-04 03:51:20,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 401 [2023-08-04 03:51:20,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 109 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 182.25) internal successors, (1458), 8 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:20,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:20,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 401 [2023-08-04 03:51:20,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:21,028 INFO L124 PetriNetUnfolderBase]: 5228/10323 cut-off events. [2023-08-04 03:51:21,028 INFO L125 PetriNetUnfolderBase]: For 10294/10315 co-relation queries the response was YES. [2023-08-04 03:51:21,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29187 conditions, 10323 events. 5228/10323 cut-off events. For 10294/10315 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 77497 event pairs, 3258 based on Foata normal form. 442/10353 useless extension candidates. Maximal degree in co-relation 24442. Up to 8229 conditions per place. [2023-08-04 03:51:21,086 INFO L140 encePairwiseOnDemand]: 389/401 looper letters, 134 selfloop transitions, 17 changer transitions 4/172 dead transitions. [2023-08-04 03:51:21,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 172 transitions, 1102 flow [2023-08-04 03:51:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 03:51:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 03:51:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1540 transitions. [2023-08-04 03:51:21,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800498753117207 [2023-08-04 03:51:21,089 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1540 transitions. [2023-08-04 03:51:21,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1540 transitions. [2023-08-04 03:51:21,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:21,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1540 transitions. [2023-08-04 03:51:21,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 192.5) internal successors, (1540), 8 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:21,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 401.0) internal successors, (3609), 9 states have internal predecessors, (3609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:21,098 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 401.0) internal successors, (3609), 9 states have internal predecessors, (3609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:21,098 INFO L175 Difference]: Start difference. First operand has 104 places, 109 transitions, 541 flow. Second operand 8 states and 1540 transitions. [2023-08-04 03:51:21,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 172 transitions, 1102 flow [2023-08-04 03:51:21,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 172 transitions, 1058 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 03:51:21,108 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 497 flow [2023-08-04 03:51:21,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2023-08-04 03:51:21,109 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 19 predicate places. [2023-08-04 03:51:21,109 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 497 flow [2023-08-04 03:51:21,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 182.25) internal successors, (1458), 8 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:21,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:21,110 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1] [2023-08-04 03:51:21,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 03:51:21,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:21,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1320185369, now seen corresponding path program 1 times [2023-08-04 03:51:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:21,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057261024] [2023-08-04 03:51:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:21,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:21,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:21,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057261024] [2023-08-04 03:51:21,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057261024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:21,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:21,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:51:21,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67714423] [2023-08-04 03:51:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:21,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:21,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:21,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:21,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:21,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 401 [2023-08-04 03:51:21,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 497 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:21,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:21,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 401 [2023-08-04 03:51:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:22,175 INFO L124 PetriNetUnfolderBase]: 6047/12465 cut-off events. [2023-08-04 03:51:22,175 INFO L125 PetriNetUnfolderBase]: For 8101/8141 co-relation queries the response was YES. [2023-08-04 03:51:22,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33284 conditions, 12465 events. 6047/12465 cut-off events. For 8101/8141 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 102354 event pairs, 1952 based on Foata normal form. 134/12178 useless extension candidates. Maximal degree in co-relation 27392. Up to 8026 conditions per place. [2023-08-04 03:51:22,238 INFO L140 encePairwiseOnDemand]: 381/401 looper letters, 107 selfloop transitions, 35 changer transitions 3/166 dead transitions. [2023-08-04 03:51:22,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 166 transitions, 1096 flow [2023-08-04 03:51:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-04 03:51:22,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037406483790524 [2023-08-04 03:51:22,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-04 03:51:22,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-04 03:51:22,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:22,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-04 03:51:22,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:22,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:22,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:22,244 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 497 flow. Second operand 3 states and 606 transitions. [2023-08-04 03:51:22,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 166 transitions, 1096 flow [2023-08-04 03:51:22,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 166 transitions, 1050 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-04 03:51:22,254 INFO L231 Difference]: Finished difference. Result has 100 places, 134 transitions, 806 flow [2023-08-04 03:51:22,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=806, PETRI_PLACES=100, PETRI_TRANSITIONS=134} [2023-08-04 03:51:22,255 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2023-08-04 03:51:22,256 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 134 transitions, 806 flow [2023-08-04 03:51:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:22,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:22,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1] [2023-08-04 03:51:22,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 03:51:22,268 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:22,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash 332625591, now seen corresponding path program 2 times [2023-08-04 03:51:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:22,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958059961] [2023-08-04 03:51:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:22,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:22,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958059961] [2023-08-04 03:51:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958059961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:22,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:22,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 03:51:22,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925105222] [2023-08-04 03:51:22,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:22,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:51:22,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:51:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:51:22,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 401 [2023-08-04 03:51:22,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 134 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:22,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:22,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 401 [2023-08-04 03:51:22,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:23,684 INFO L124 PetriNetUnfolderBase]: 6454/13401 cut-off events. [2023-08-04 03:51:23,684 INFO L125 PetriNetUnfolderBase]: For 17233/17616 co-relation queries the response was YES. [2023-08-04 03:51:23,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42712 conditions, 13401 events. 6454/13401 cut-off events. For 17233/17616 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 111887 event pairs, 1671 based on Foata normal form. 585/13831 useless extension candidates. Maximal degree in co-relation 35500. Up to 6393 conditions per place. [2023-08-04 03:51:23,754 INFO L140 encePairwiseOnDemand]: 391/401 looper letters, 138 selfloop transitions, 37 changer transitions 1/197 dead transitions. [2023-08-04 03:51:23,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 197 transitions, 1517 flow [2023-08-04 03:51:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:51:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:51:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 771 transitions. [2023-08-04 03:51:23,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48067331670822944 [2023-08-04 03:51:23,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 771 transitions. [2023-08-04 03:51:23,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 771 transitions. [2023-08-04 03:51:23,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:23,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 771 transitions. [2023-08-04 03:51:23,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:23,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:23,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:23,760 INFO L175 Difference]: Start difference. First operand has 100 places, 134 transitions, 806 flow. Second operand 4 states and 771 transitions. [2023-08-04 03:51:23,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 197 transitions, 1517 flow [2023-08-04 03:51:23,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 197 transitions, 1482 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:23,778 INFO L231 Difference]: Finished difference. Result has 103 places, 150 transitions, 1049 flow [2023-08-04 03:51:23,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1049, PETRI_PLACES=103, PETRI_TRANSITIONS=150} [2023-08-04 03:51:23,778 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 17 predicate places. [2023-08-04 03:51:23,778 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 150 transitions, 1049 flow [2023-08-04 03:51:23,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:23,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:23,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:23,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 03:51:23,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:23,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash -659327779, now seen corresponding path program 1 times [2023-08-04 03:51:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:23,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132281221] [2023-08-04 03:51:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:23,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:23,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132281221] [2023-08-04 03:51:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132281221] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:23,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:23,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:51:23,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18896178] [2023-08-04 03:51:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:23,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:23,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:23,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:23,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 401 [2023-08-04 03:51:23,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 150 transitions, 1049 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:23,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:23,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 401 [2023-08-04 03:51:23,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:25,105 INFO L124 PetriNetUnfolderBase]: 6712/13861 cut-off events. [2023-08-04 03:51:25,105 INFO L125 PetriNetUnfolderBase]: For 24720/25156 co-relation queries the response was YES. [2023-08-04 03:51:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48174 conditions, 13861 events. 6712/13861 cut-off events. For 24720/25156 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 115572 event pairs, 1892 based on Foata normal form. 238/13906 useless extension candidates. Maximal degree in co-relation 40472. Up to 9117 conditions per place. [2023-08-04 03:51:25,162 INFO L140 encePairwiseOnDemand]: 382/401 looper letters, 121 selfloop transitions, 64 changer transitions 1/207 dead transitions. [2023-08-04 03:51:25,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 207 transitions, 1802 flow [2023-08-04 03:51:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-08-04 03:51:25,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49875311720698257 [2023-08-04 03:51:25,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-08-04 03:51:25,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-08-04 03:51:25,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:25,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-08-04 03:51:25,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:25,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:25,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:25,167 INFO L175 Difference]: Start difference. First operand has 103 places, 150 transitions, 1049 flow. Second operand 3 states and 600 transitions. [2023-08-04 03:51:25,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 207 transitions, 1802 flow [2023-08-04 03:51:25,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 207 transitions, 1801 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:25,178 INFO L231 Difference]: Finished difference. Result has 106 places, 179 transitions, 1630 flow [2023-08-04 03:51:25,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1630, PETRI_PLACES=106, PETRI_TRANSITIONS=179} [2023-08-04 03:51:25,178 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 20 predicate places. [2023-08-04 03:51:25,179 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 179 transitions, 1630 flow [2023-08-04 03:51:25,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:25,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:25,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:25,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 03:51:25,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:25,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2094223965, now seen corresponding path program 2 times [2023-08-04 03:51:25,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:25,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118766038] [2023-08-04 03:51:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:25,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:25,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:25,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118766038] [2023-08-04 03:51:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118766038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:51:25,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122374324] [2023-08-04 03:51:25,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 03:51:25,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:25,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:51:25,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:51:25,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 03:51:25,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 03:51:25,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 03:51:25,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-04 03:51:25,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:51:25,657 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 [2023-08-04 03:51:25,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-04 03:51:25,689 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 [2023-08-04 03:51:25,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-04 03:51:25,724 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 [2023-08-04 03:51:25,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-04 03:51:25,735 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 [2023-08-04 03:51:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:25,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:51:25,770 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_457 (Array Int Int))) (not (= (select (select (store |c_#pthreadsMutex| |c_~#mutex1~0.base| v_ArrVal_457) |c_~#mutex2~0.base|) |c_~#mutex2~0.offset|) 0))) is different from false [2023-08-04 03:51:25,834 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-04 03:51:25,835 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 22 treesize of output 23 [2023-08-04 03:51:25,840 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 131 treesize of output 119 [2023-08-04 03:51:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2023-08-04 03:51:25,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122374324] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:51:25,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:51:25,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-08-04 03:51:25,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696578855] [2023-08-04 03:51:25,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:51:25,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-04 03:51:25,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-04 03:51:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=164, Unknown=2, NotChecked=26, Total=240 [2023-08-04 03:51:26,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 401 [2023-08-04 03:51:26,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 179 transitions, 1630 flow. Second operand has 16 states, 16 states have (on average 141.25) internal successors, (2260), 16 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:26,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:26,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 401 [2023-08-04 03:51:26,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:27,117 INFO L124 PetriNetUnfolderBase]: 1263/3311 cut-off events. [2023-08-04 03:51:27,117 INFO L125 PetriNetUnfolderBase]: For 12944/12954 co-relation queries the response was YES. [2023-08-04 03:51:27,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13558 conditions, 3311 events. 1263/3311 cut-off events. For 12944/12954 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 23617 event pairs, 182 based on Foata normal form. 314/3625 useless extension candidates. Maximal degree in co-relation 8971. Up to 1495 conditions per place. [2023-08-04 03:51:27,147 INFO L140 encePairwiseOnDemand]: 371/401 looper letters, 104 selfloop transitions, 87 changer transitions 32/236 dead transitions. [2023-08-04 03:51:27,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 236 transitions, 2250 flow [2023-08-04 03:51:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-04 03:51:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-04 03:51:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1377 transitions. [2023-08-04 03:51:27,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38154613466334164 [2023-08-04 03:51:27,151 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1377 transitions. [2023-08-04 03:51:27,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1377 transitions. [2023-08-04 03:51:27,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:27,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1377 transitions. [2023-08-04 03:51:27,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:27,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 401.0) internal successors, (4010), 10 states have internal predecessors, (4010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:27,159 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 401.0) internal successors, (4010), 10 states have internal predecessors, (4010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:27,159 INFO L175 Difference]: Start difference. First operand has 106 places, 179 transitions, 1630 flow. Second operand 9 states and 1377 transitions. [2023-08-04 03:51:27,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 236 transitions, 2250 flow [2023-08-04 03:51:27,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 236 transitions, 2136 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-04 03:51:27,174 INFO L231 Difference]: Finished difference. Result has 113 places, 164 transitions, 1489 flow [2023-08-04 03:51:27,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1489, PETRI_PLACES=113, PETRI_TRANSITIONS=164} [2023-08-04 03:51:27,175 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 27 predicate places. [2023-08-04 03:51:27,176 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 164 transitions, 1489 flow [2023-08-04 03:51:27,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 141.25) internal successors, (2260), 16 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:27,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:27,176 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:27,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 03:51:27,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-04 03:51:27,383 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:27,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash 309622673, now seen corresponding path program 1 times [2023-08-04 03:51:27,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:27,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893081534] [2023-08-04 03:51:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:27,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:27,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893081534] [2023-08-04 03:51:27,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893081534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:27,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:27,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 03:51:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084218112] [2023-08-04 03:51:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 03:51:27,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:27,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 03:51:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:51:27,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 401 [2023-08-04 03:51:27,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 164 transitions, 1489 flow. Second operand has 6 states, 6 states have (on average 187.83333333333334) internal successors, (1127), 6 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:27,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:27,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 401 [2023-08-04 03:51:27,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:28,033 INFO L124 PetriNetUnfolderBase]: 1216/3043 cut-off events. [2023-08-04 03:51:28,033 INFO L125 PetriNetUnfolderBase]: For 10341/10385 co-relation queries the response was YES. [2023-08-04 03:51:28,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13308 conditions, 3043 events. 1216/3043 cut-off events. For 10341/10385 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20825 event pairs, 360 based on Foata normal form. 14/3025 useless extension candidates. Maximal degree in co-relation 8931. Up to 1224 conditions per place. [2023-08-04 03:51:28,050 INFO L140 encePairwiseOnDemand]: 393/401 looper letters, 272 selfloop transitions, 12 changer transitions 3/307 dead transitions. [2023-08-04 03:51:28,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 307 transitions, 3408 flow [2023-08-04 03:51:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 03:51:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 03:51:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1402 transitions. [2023-08-04 03:51:28,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49946562166013536 [2023-08-04 03:51:28,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1402 transitions. [2023-08-04 03:51:28,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1402 transitions. [2023-08-04 03:51:28,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:28,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1402 transitions. [2023-08-04 03:51:28,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 200.28571428571428) internal successors, (1402), 7 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,060 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,060 INFO L175 Difference]: Start difference. First operand has 113 places, 164 transitions, 1489 flow. Second operand 7 states and 1402 transitions. [2023-08-04 03:51:28,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 307 transitions, 3408 flow [2023-08-04 03:51:28,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 307 transitions, 3312 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-04 03:51:28,079 INFO L231 Difference]: Finished difference. Result has 116 places, 172 transitions, 1555 flow [2023-08-04 03:51:28,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1555, PETRI_PLACES=116, PETRI_TRANSITIONS=172} [2023-08-04 03:51:28,079 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 30 predicate places. [2023-08-04 03:51:28,079 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 172 transitions, 1555 flow [2023-08-04 03:51:28,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.83333333333334) internal successors, (1127), 6 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:28,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 03:51:28,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:28,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1238492853, now seen corresponding path program 1 times [2023-08-04 03:51:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:28,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479064106] [2023-08-04 03:51:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479064106] [2023-08-04 03:51:28,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479064106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:28,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:28,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 03:51:28,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990397772] [2023-08-04 03:51:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:28,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 03:51:28,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:28,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 03:51:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:51:28,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 401 [2023-08-04 03:51:28,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 172 transitions, 1555 flow. Second operand has 6 states, 6 states have (on average 187.83333333333334) internal successors, (1127), 6 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:28,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 401 [2023-08-04 03:51:28,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:28,793 INFO L124 PetriNetUnfolderBase]: 1216/3041 cut-off events. [2023-08-04 03:51:28,793 INFO L125 PetriNetUnfolderBase]: For 10792/10836 co-relation queries the response was YES. [2023-08-04 03:51:28,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13592 conditions, 3041 events. 1216/3041 cut-off events. For 10792/10836 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20800 event pairs, 337 based on Foata normal form. 14/3023 useless extension candidates. Maximal degree in co-relation 9224. Up to 1242 conditions per place. [2023-08-04 03:51:28,817 INFO L140 encePairwiseOnDemand]: 393/401 looper letters, 274 selfloop transitions, 11 changer transitions 3/308 dead transitions. [2023-08-04 03:51:28,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 308 transitions, 3397 flow [2023-08-04 03:51:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 03:51:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 03:51:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1396 transitions. [2023-08-04 03:51:28,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49732810830067686 [2023-08-04 03:51:28,821 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1396 transitions. [2023-08-04 03:51:28,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1396 transitions. [2023-08-04 03:51:28,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:28,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1396 transitions. [2023-08-04 03:51:28,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.42857142857142) internal successors, (1396), 7 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,827 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 401.0) internal successors, (3208), 8 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,827 INFO L175 Difference]: Start difference. First operand has 116 places, 172 transitions, 1555 flow. Second operand 7 states and 1396 transitions. [2023-08-04 03:51:28,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 308 transitions, 3397 flow [2023-08-04 03:51:28,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 308 transitions, 3394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:28,850 INFO L231 Difference]: Finished difference. Result has 125 places, 179 transitions, 1653 flow [2023-08-04 03:51:28,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1653, PETRI_PLACES=125, PETRI_TRANSITIONS=179} [2023-08-04 03:51:28,851 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 39 predicate places. [2023-08-04 03:51:28,851 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 179 transitions, 1653 flow [2023-08-04 03:51:28,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.83333333333334) internal successors, (1127), 6 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:28,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:28,851 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:28,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-04 03:51:28,852 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 03:51:28,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:28,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1704174373, now seen corresponding path program 1 times [2023-08-04 03:51:28,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:28,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929442908] [2023-08-04 03:51:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:28,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:51:29,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929442908] [2023-08-04 03:51:29,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929442908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:29,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:29,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 03:51:29,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186108147] [2023-08-04 03:51:29,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:29,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 03:51:29,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:29,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 03:51:29,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-04 03:51:29,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 401 [2023-08-04 03:51:29,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 179 transitions, 1653 flow. Second operand has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:29,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:29,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 401 [2023-08-04 03:51:29,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:29,758 INFO L124 PetriNetUnfolderBase]: 1209/3018 cut-off events. [2023-08-04 03:51:29,758 INFO L125 PetriNetUnfolderBase]: For 11695/11741 co-relation queries the response was YES. [2023-08-04 03:51:29,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14061 conditions, 3018 events. 1209/3018 cut-off events. For 11695/11741 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20624 event pairs, 277 based on Foata normal form. 12/2997 useless extension candidates. Maximal degree in co-relation 9903. Up to 1377 conditions per place. [2023-08-04 03:51:29,769 INFO L140 encePairwiseOnDemand]: 389/401 looper letters, 0 selfloop transitions, 0 changer transitions 322/322 dead transitions. [2023-08-04 03:51:29,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 322 transitions, 3593 flow [2023-08-04 03:51:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-04 03:51:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-04 03:51:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1912 transitions. [2023-08-04 03:51:29,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768079800498753 [2023-08-04 03:51:29,772 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1912 transitions. [2023-08-04 03:51:29,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1912 transitions. [2023-08-04 03:51:29,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:29,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1912 transitions. [2023-08-04 03:51:29,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 191.2) internal successors, (1912), 10 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:29,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 401.0) internal successors, (4411), 11 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:29,782 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 401.0) internal successors, (4411), 11 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:29,782 INFO L175 Difference]: Start difference. First operand has 125 places, 179 transitions, 1653 flow. Second operand 10 states and 1912 transitions. [2023-08-04 03:51:29,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 322 transitions, 3593 flow [2023-08-04 03:51:29,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 322 transitions, 3587 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:51:29,812 INFO L231 Difference]: Finished difference. Result has 131 places, 0 transitions, 0 flow [2023-08-04 03:51:29,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=131, PETRI_TRANSITIONS=0} [2023-08-04 03:51:29,813 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 45 predicate places. [2023-08-04 03:51:29,813 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 0 transitions, 0 flow [2023-08-04 03:51:29,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:29,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 03:51:29,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 03:51:29,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 03:51:29,814 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 03:51:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-04 03:51:29,814 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:29,815 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 03:51:29,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:29,852 INFO L124 PetriNetUnfolderBase]: 76/433 cut-off events. [2023-08-04 03:51:29,852 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:51:29,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 433 events. 76/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 271. Up to 9 conditions per place. [2023-08-04 03:51:29,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:29,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:29,857 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:51:29,857 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:29,857 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:29,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 239 transitions, 496 flow [2023-08-04 03:51:29,893 INFO L124 PetriNetUnfolderBase]: 76/433 cut-off events. [2023-08-04 03:51:29,893 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:51:29,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 433 events. 76/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 271. Up to 9 conditions per place. [2023-08-04 03:51:29,901 INFO L119 LiptonReduction]: Number of co-enabled transitions 26076 [2023-08-04 03:51:33,089 INFO L134 LiptonReduction]: Checked pairs total: 81872 [2023-08-04 03:51:33,090 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-04 03:51:33,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:51:33,091 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;@118ed3be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:51:33,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:51:33,099 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:51:33,100 INFO L124 PetriNetUnfolderBase]: 29/120 cut-off events. [2023-08-04 03:51:33,100 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 03:51:33,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:33,100 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 03:51:33,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:51:33,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:33,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1759899425, now seen corresponding path program 1 times [2023-08-04 03:51:33,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:33,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171707908] [2023-08-04 03:51:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:33,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:33,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:33,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171707908] [2023-08-04 03:51:33,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171707908] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:51:33,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429081192] [2023-08-04 03:51:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:33,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:33,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:51:33,227 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:51:33,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 03:51:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:33,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:51:33,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:51:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:33,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:51:33,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429081192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:33,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:51:33,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 03:51:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832801158] [2023-08-04 03:51:33,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:33,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:51:33,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:51:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:51:33,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 401 [2023-08-04 03:51:33,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 118 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 188.6) internal successors, (943), 5 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:33,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:33,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 401 [2023-08-04 03:51:33,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:34,494 INFO L124 PetriNetUnfolderBase]: 12006/19898 cut-off events. [2023-08-04 03:51:34,495 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-08-04 03:51:34,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38641 conditions, 19898 events. 12006/19898 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 149194 event pairs, 238 based on Foata normal form. 5104/23322 useless extension candidates. Maximal degree in co-relation 32076. Up to 18079 conditions per place. [2023-08-04 03:51:34,544 INFO L140 encePairwiseOnDemand]: 363/401 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2023-08-04 03:51:34,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 130 transitions, 494 flow [2023-08-04 03:51:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:51:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:51:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1116 transitions. [2023-08-04 03:51:34,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5566084788029925 [2023-08-04 03:51:34,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1116 transitions. [2023-08-04 03:51:34,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1116 transitions. [2023-08-04 03:51:34,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:34,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1116 transitions. [2023-08-04 03:51:34,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:34,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:34,552 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:34,552 INFO L175 Difference]: Start difference. First operand has 86 places, 118 transitions, 254 flow. Second operand 5 states and 1116 transitions. [2023-08-04 03:51:34,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 130 transitions, 494 flow [2023-08-04 03:51:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:51:34,554 INFO L231 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2023-08-04 03:51:34,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2023-08-04 03:51:34,555 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-04 03:51:34,555 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2023-08-04 03:51:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.6) internal successors, (943), 5 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:51:34,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 03:51:34,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 03:51:34,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:34,761 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:51:34,762 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 03:51:34,762 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:51:34,762 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:51:34,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:51:34 BasicIcfg [2023-08-04 03:51:34,767 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:51:34,767 INFO L158 Benchmark]: Toolchain (without parser) took 39010.93ms. Allocated memory was 352.3MB in the beginning and 3.2GB in the end (delta: 2.8GB). Free memory was 305.8MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-08-04 03:51:34,767 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 352.3MB. Free memory is still 308.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:51:34,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.68ms. Allocated memory is still 352.3MB. Free memory was 305.8MB in the beginning and 285.2MB in the end (delta: 20.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 03:51:34,768 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.90ms. Allocated memory is still 352.3MB. Free memory was 284.8MB in the beginning and 282.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:51:34,768 INFO L158 Benchmark]: Boogie Preprocessor took 38.80ms. Allocated memory is still 352.3MB. Free memory was 282.7MB in the beginning and 281.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:51:34,768 INFO L158 Benchmark]: RCFGBuilder took 425.04ms. Allocated memory is still 352.3MB. Free memory was 280.6MB in the beginning and 262.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-04 03:51:34,768 INFO L158 Benchmark]: TraceAbstraction took 38071.19ms. Allocated memory was 352.3MB in the beginning and 3.2GB in the end (delta: 2.8GB). Free memory was 262.1MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-08-04 03:51:34,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 352.3MB. Free memory is still 308.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 432.68ms. Allocated memory is still 352.3MB. Free memory was 305.8MB in the beginning and 285.2MB in the end (delta: 20.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.90ms. Allocated memory is still 352.3MB. Free memory was 284.8MB in the beginning and 282.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.80ms. Allocated memory is still 352.3MB. Free memory was 282.7MB in the beginning and 281.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 425.04ms. Allocated memory is still 352.3MB. Free memory was 280.6MB in the beginning and 262.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 38071.19ms. Allocated memory was 352.3MB in the beginning and 3.2GB in the end (delta: 2.8GB). Free memory was 262.1MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 154 PlacesBefore, 54 PlacesAfterwards, 179 TransitionsBefore, 75 TransitionsAfterwards, 9646 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 4 ChoiceCompositions, 137 TotalNumberOfCompositions, 21000 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8997, independent: 8617, independent conditional: 0, independent unconditional: 8617, dependent: 380, dependent conditional: 0, dependent unconditional: 380, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4746, independent: 4673, independent conditional: 0, independent unconditional: 4673, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8997, independent: 3944, independent conditional: 0, independent unconditional: 3944, dependent: 307, dependent conditional: 0, dependent unconditional: 307, unknown: 4746, unknown conditional: 0, unknown unconditional: 4746] , Statistics on independence cache: Total cache size (in pairs): 308, Positive cache size: 265, Positive conditional cache size: 0, Positive unconditional cache size: 265, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 154 PlacesBefore, 51 PlacesAfterwards, 179 TransitionsBefore, 70 TransitionsAfterwards, 9646 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 85 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 6 ChoiceCompositions, 142 TotalNumberOfCompositions, 22732 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9217, independent: 8774, independent conditional: 0, independent unconditional: 8774, dependent: 443, dependent conditional: 0, dependent unconditional: 443, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4837, independent: 4740, independent conditional: 0, independent unconditional: 4740, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9217, independent: 4034, independent conditional: 0, independent unconditional: 4034, dependent: 346, dependent conditional: 0, dependent unconditional: 346, unknown: 4837, unknown conditional: 0, unknown unconditional: 4837] , Statistics on independence cache: Total cache size (in pairs): 302, Positive cache size: 259, Positive conditional cache size: 0, Positive unconditional cache size: 259, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 202 PlacesBefore, 86 PlacesAfterwards, 239 TransitionsBefore, 119 TransitionsAfterwards, 26076 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 96 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 4 ChoiceCompositions, 162 TotalNumberOfCompositions, 72714 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22162, independent: 21498, independent conditional: 0, independent unconditional: 21498, dependent: 664, dependent conditional: 0, dependent unconditional: 664, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11676, independent: 11570, independent conditional: 0, independent unconditional: 11570, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 22162, independent: 9928, independent conditional: 0, independent unconditional: 9928, dependent: 558, dependent conditional: 0, dependent unconditional: 558, unknown: 11676, unknown conditional: 0, unknown unconditional: 11676] , Statistics on independence cache: Total cache size (in pairs): 723, Positive cache size: 655, Positive conditional cache size: 0, Positive unconditional cache size: 655, Negative cache size: 68, Negative conditional cache size: 0, Negative unconditional cache size: 68, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 202 PlacesBefore, 86 PlacesAfterwards, 239 TransitionsBefore, 118 TransitionsAfterwards, 26076 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 5 ChoiceCompositions, 162 TotalNumberOfCompositions, 81872 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23675, independent: 22891, independent conditional: 0, independent unconditional: 22891, dependent: 784, dependent conditional: 0, dependent unconditional: 784, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11640, independent: 11533, independent conditional: 0, independent unconditional: 11533, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23675, independent: 11358, independent conditional: 0, independent unconditional: 11358, dependent: 677, dependent conditional: 0, dependent unconditional: 677, unknown: 11640, unknown conditional: 0, unknown unconditional: 11640] , Statistics on independence cache: Total cache size (in pairs): 733, Positive cache size: 664, Positive conditional cache size: 0, Positive unconditional cache size: 664, Negative cache size: 69, Negative conditional cache size: 0, Negative unconditional cache size: 69, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 691]: 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, 198 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 162 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 7 mSDtfsCounter, 162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 128 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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, 240 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.1s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 18.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 54 mSolverCounterUnknown, 1874 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1304 mSDsluCounter, 316 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 133 IncrementalHoareTripleChecker+Unchecked, 238 mSDsCounter, 531 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5697 IncrementalHoareTripleChecker+Invalid, 6415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 531 mSolverCounterUnsat, 78 mSDtfsCounter, 5697 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 143 SyntacticMatches, 15 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1653occurred in iteration=16, InterpolantAutomatonStates: 87, 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, 2.5s InterpolantComputationTime, 570 NumberOfCodeBlocks, 570 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 617 ConstructedInterpolants, 7 QuantifiedInterpolants, 2836 SizeOfPredicates, 6 NumberOfNonLiveVariables, 590 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 23 InterpolantComputations, 14 PerfectInterpolantSequences, 106/121 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 198 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 240 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 135 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 03:51:34,796 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...