/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_01-priv_nr_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:02:33,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:02:33,672 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:02:33,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:02:33,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:02:33,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:02:33,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:02:33,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:02:33,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:02:33,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:02:33,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:02:33,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:02:33,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:02:33,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:02:33,708 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:02:33,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:02:33,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:02:33,709 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:02:33,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:02:33,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:02:33,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:02:33,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:02:33,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:02:33,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:02:33,719 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:02:33,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:02:33,719 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:02:33,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:02:33,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:02:33,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:02:33,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:02:33,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:02:33,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:02:33,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:02:33,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:02:33,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:02:33,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:02:33,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:02:33,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:02:33,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:02:33,722 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:02:33,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:02:33,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:02:33,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:02:33,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:02:33,913 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:02:33,914 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:02:33,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_01-priv_nr_true_bound2.i [2023-08-03 22:02:34,955 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:02:35,106 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:02:35,106 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_01-priv_nr_true_bound2.i [2023-08-03 22:02:35,115 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55a8bda00/38c91757255c479b9f41b51408decc51/FLAG08a85541f [2023-08-03 22:02:35,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55a8bda00/38c91757255c479b9f41b51408decc51 [2023-08-03 22:02:35,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:02:35,127 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:02:35,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:02:35,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:02:35,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:02:35,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4733748e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35, skipping insertion in model container [2023-08-03 22:02:35,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,179 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:02:35,283 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_01-priv_nr_true_bound2.i[1084,1097] [2023-08-03 22:02:35,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:02:35,379 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:02:35,391 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_01-priv_nr_true_bound2.i[1084,1097] [2023-08-03 22:02:35,404 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 22:02:35,406 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 22:02:35,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:02:35,463 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:02:35,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35 WrapperNode [2023-08-03 22:02:35,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:02:35,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:02:35,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:02:35,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:02:35,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,501 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 100 [2023-08-03 22:02:35,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:02:35,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:02:35,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:02:35,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:02:35,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:02:35,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:02:35,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:02:35,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:02:35,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (1/1) ... [2023-08-03 22:02:35,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:02:35,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:02:35,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 22:02:35,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 22:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 22:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:02:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 22:02:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 22:02:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:02:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:02:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:02:35,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:02:35,603 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 22:02:35,684 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:02:35,686 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:02:35,799 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:02:35,803 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:02:35,803 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 22:02:35,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:02:35 BoogieIcfgContainer [2023-08-03 22:02:35,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:02:35,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:02:35,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:02:35,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:02:35,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:02:35" (1/3) ... [2023-08-03 22:02:35,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5368fd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:02:35, skipping insertion in model container [2023-08-03 22:02:35,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:02:35" (2/3) ... [2023-08-03 22:02:35,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5368fd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:02:35, skipping insertion in model container [2023-08-03 22:02:35,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:02:35" (3/3) ... [2023-08-03 22:02:35,810 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_01-priv_nr_true_bound2.i [2023-08-03 22:02:35,814 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:02:35,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:02:35,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-03 22:02:35,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:02:35,849 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 22:02:35,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 107 transitions, 222 flow [2023-08-03 22:02:35,979 INFO L124 PetriNetUnfolderBase]: 10/140 cut-off events. [2023-08-03 22:02:35,979 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 22:02:35,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 140 events. 10/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 253 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2023-08-03 22:02:35,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 107 transitions, 222 flow [2023-08-03 22:02:35,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 101 transitions, 207 flow [2023-08-03 22:02:35,991 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:02:36,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 101 transitions, 207 flow [2023-08-03 22:02:36,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 101 transitions, 207 flow [2023-08-03 22:02:36,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 101 transitions, 207 flow [2023-08-03 22:02:36,046 INFO L124 PetriNetUnfolderBase]: 9/134 cut-off events. [2023-08-03 22:02:36,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:02:36,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 9/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-03 22:02:36,049 INFO L119 LiptonReduction]: Number of co-enabled transitions 2028 [2023-08-03 22:02:38,258 INFO L134 LiptonReduction]: Checked pairs total: 4553 [2023-08-03 22:02:38,259 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-03 22:02:38,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:02:38,271 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;@551cf92b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:02:38,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:02:38,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:02:38,274 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-03 22:02:38,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:02:38,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:38,275 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:02:38,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:02:38,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash -990521809, now seen corresponding path program 1 times [2023-08-03 22:02:38,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:38,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901910964] [2023-08-03 22:02:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:38,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:02:38,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:02:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:02:38,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:02:38,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:02:38,427 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:02:38,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:02:38,429 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:02:38,433 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 22:02:38,433 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:02:38,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:02:38,454 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 22:02:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 135 transitions, 288 flow [2023-08-03 22:02:38,486 INFO L124 PetriNetUnfolderBase]: 18/225 cut-off events. [2023-08-03 22:02:38,486 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 22:02:38,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 225 events. 18/225 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 569 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-08-03 22:02:38,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 135 transitions, 288 flow [2023-08-03 22:02:38,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 134 transitions, 286 flow [2023-08-03 22:02:38,491 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:02:38,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 134 transitions, 286 flow [2023-08-03 22:02:38,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 134 transitions, 286 flow [2023-08-03 22:02:38,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 134 transitions, 286 flow [2023-08-03 22:02:38,517 INFO L124 PetriNetUnfolderBase]: 18/224 cut-off events. [2023-08-03 22:02:38,517 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 22:02:38,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 224 events. 18/224 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 564 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-08-03 22:02:38,521 INFO L119 LiptonReduction]: Number of co-enabled transitions 5980 [2023-08-03 22:02:40,814 INFO L134 LiptonReduction]: Checked pairs total: 14005 [2023-08-03 22:02:40,814 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 22:02:40,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:02:40,816 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;@551cf92b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:02:40,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:02:40,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:02:40,820 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-08-03 22:02:40,820 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:02:40,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:40,820 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:02:40,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:02:40,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:40,820 INFO L85 PathProgramCache]: Analyzing trace with hash -364959252, now seen corresponding path program 1 times [2023-08-03 22:02:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289594152] [2023-08-03 22:02:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:40,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:40,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:40,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289594152] [2023-08-03 22:02:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289594152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:02:40,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290551938] [2023-08-03 22:02:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:40,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:40,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:02:40,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:02:40,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 22:02:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:41,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:02:41,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:02:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:41,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:02:41,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290551938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:41,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:02:41,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 22:02:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67701386] [2023-08-03 22:02:41,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:41,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:02:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:41,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:02:41,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:02:41,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 260 [2023-08-03 22:02:41,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 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) [2023-08-03 22:02:41,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:41,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 260 [2023-08-03 22:02:41,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:41,385 INFO L124 PetriNetUnfolderBase]: 1803/2980 cut-off events. [2023-08-03 22:02:41,386 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-03 22:02:41,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5983 conditions, 2980 events. 1803/2980 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16911 event pairs, 0 based on Foata normal form. 122/2311 useless extension candidates. Maximal degree in co-relation 1051. Up to 2752 conditions per place. [2023-08-03 22:02:41,392 INFO L140 encePairwiseOnDemand]: 254/260 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2023-08-03 22:02:41,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 268 flow [2023-08-03 22:02:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:02:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:02:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 628 transitions. [2023-08-03 22:02:41,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48307692307692307 [2023-08-03 22:02:41,408 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 628 transitions. [2023-08-03 22:02:41,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 628 transitions. [2023-08-03 22:02:41,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:41,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 628 transitions. [2023-08-03 22:02:41,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:41,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:41,422 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:41,423 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 100 flow. Second operand 5 states and 628 transitions. [2023-08-03 22:02:41,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 268 flow [2023-08-03 22:02:41,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:02:41,431 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-03 22:02:41,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-03 22:02:41,439 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-03 22:02:41,439 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-03 22:02:41,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 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) [2023-08-03 22:02:41,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:02:41,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 22:02:41,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:41,646 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:02:41,647 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 22:02:41,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 135 transitions, 288 flow [2023-08-03 22:02:41,669 INFO L124 PetriNetUnfolderBase]: 18/225 cut-off events. [2023-08-03 22:02:41,669 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 22:02:41,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 225 events. 18/225 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 569 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-08-03 22:02:41,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 135 transitions, 288 flow [2023-08-03 22:02:41,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 135 transitions, 288 flow [2023-08-03 22:02:41,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:02:41,671 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 135 transitions, 288 flow [2023-08-03 22:02:41,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 135 transitions, 288 flow [2023-08-03 22:02:41,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 135 transitions, 288 flow [2023-08-03 22:02:41,682 INFO L124 PetriNetUnfolderBase]: 18/225 cut-off events. [2023-08-03 22:02:41,683 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 22:02:41,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 225 events. 18/225 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 569 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 142. Up to 8 conditions per place. [2023-08-03 22:02:41,686 INFO L119 LiptonReduction]: Number of co-enabled transitions 5980 [2023-08-03 22:02:43,953 INFO L134 LiptonReduction]: Checked pairs total: 15893 [2023-08-03 22:02:43,953 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-03 22:02:43,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:02:43,955 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;@551cf92b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:02:43,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 22:02:43,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:02:43,956 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-03 22:02:43,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:02:43,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:43,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 22:02:43,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:43,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash 819, now seen corresponding path program 1 times [2023-08-03 22:02:43,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:43,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696288458] [2023-08-03 22:02:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:43,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:43,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:43,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696288458] [2023-08-03 22:02:43,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696288458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:43,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:43,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 22:02:43,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313574506] [2023-08-03 22:02:43,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:43,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 22:02:43,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:43,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 22:02:43,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 22:02:43,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 265 [2023-08-03 22:02:43,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:43,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:43,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 265 [2023-08-03 22:02:43,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:44,142 INFO L124 PetriNetUnfolderBase]: 1947/3215 cut-off events. [2023-08-03 22:02:44,143 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-03 22:02:44,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6455 conditions, 3215 events. 1947/3215 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16938 event pairs, 1936 based on Foata normal form. 131/2428 useless extension candidates. Maximal degree in co-relation 2553. Up to 3176 conditions per place. [2023-08-03 22:02:44,153 INFO L140 encePairwiseOnDemand]: 262/265 looper letters, 34 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2023-08-03 22:02:44,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 162 flow [2023-08-03 22:02:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 22:02:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 22:02:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 271 transitions. [2023-08-03 22:02:44,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113207547169811 [2023-08-03 22:02:44,154 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 271 transitions. [2023-08-03 22:02:44,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 271 transitions. [2023-08-03 22:02:44,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:44,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 271 transitions. [2023-08-03 22:02:44,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,158 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,158 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 102 flow. Second operand 2 states and 271 transitions. [2023-08-03 22:02:44,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 162 flow [2023-08-03 22:02:44,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:02:44,161 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 94 flow [2023-08-03 22:02:44,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-03 22:02:44,163 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-08-03 22:02:44,163 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 94 flow [2023-08-03 22:02:44,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:44,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 22:02:44,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 22:02:44,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:44,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 781355822, now seen corresponding path program 1 times [2023-08-03 22:02:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:44,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763452712] [2023-08-03 22:02:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:44,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:44,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763452712] [2023-08-03 22:02:44,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763452712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:44,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:44,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:02:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648384584] [2023-08-03 22:02:44,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:44,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:02:44,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:44,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:02:44,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:02:44,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 265 [2023-08-03 22:02:44,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:44,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 265 [2023-08-03 22:02:44,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:44,358 INFO L124 PetriNetUnfolderBase]: 1946/3206 cut-off events. [2023-08-03 22:02:44,358 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-03 22:02:44,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6445 conditions, 3206 events. 1946/3206 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16816 event pairs, 896 based on Foata normal form. 0/2291 useless extension candidates. Maximal degree in co-relation 6440. Up to 3157 conditions per place. [2023-08-03 22:02:44,368 INFO L140 encePairwiseOnDemand]: 262/265 looper letters, 42 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 22:02:44,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 202 flow [2023-08-03 22:02:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:02:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:02:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-03 22:02:44,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830188679245283 [2023-08-03 22:02:44,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-03 22:02:44,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-03 22:02:44,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:44,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-03 22:02:44,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,375 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 384 transitions. [2023-08-03 22:02:44,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 202 flow [2023-08-03 22:02:44,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:02:44,377 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 106 flow [2023-08-03 22:02:44,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-03 22:02:44,379 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-03 22:02:44,380 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 106 flow [2023-08-03 22:02:44,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:44,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 22:02:44,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 22:02:44,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:44,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:44,381 INFO L85 PathProgramCache]: Analyzing trace with hash 781894402, now seen corresponding path program 1 times [2023-08-03 22:02:44,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:44,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931127978] [2023-08-03 22:02:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:44,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:44,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:44,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931127978] [2023-08-03 22:02:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931127978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:44,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:44,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 22:02:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664782265] [2023-08-03 22:02:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:44,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:02:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:02:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:02:44,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 265 [2023-08-03 22:02:44,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:44,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 265 [2023-08-03 22:02:44,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:44,690 INFO L124 PetriNetUnfolderBase]: 2224/3644 cut-off events. [2023-08-03 22:02:44,690 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2023-08-03 22:02:44,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7515 conditions, 3644 events. 2224/3644 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19323 event pairs, 1210 based on Foata normal form. 0/2815 useless extension candidates. Maximal degree in co-relation 7508. Up to 3251 conditions per place. [2023-08-03 22:02:44,707 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 55 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-08-03 22:02:44,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 297 flow [2023-08-03 22:02:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:02:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:02:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-08-03 22:02:44,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49433962264150944 [2023-08-03 22:02:44,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-08-03 22:02:44,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-08-03 22:02:44,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:44,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-08-03 22:02:44,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,711 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 106 flow. Second operand 3 states and 393 transitions. [2023-08-03 22:02:44,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 297 flow [2023-08-03 22:02:44,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:02:44,715 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 162 flow [2023-08-03 22:02:44,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-03 22:02:44,717 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-03 22:02:44,717 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 162 flow [2023-08-03 22:02:44,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:44,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:44,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 22:02:44,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:44,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1808323367, now seen corresponding path program 1 times [2023-08-03 22:02:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:44,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470747209] [2023-08-03 22:02:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:44,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:44,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:44,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470747209] [2023-08-03 22:02:44,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470747209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:44,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:02:44,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042401321] [2023-08-03 22:02:44,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:02:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:02:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:02:44,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 265 [2023-08-03 22:02:44,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:44,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:44,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 265 [2023-08-03 22:02:44,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:45,103 INFO L124 PetriNetUnfolderBase]: 2751/4525 cut-off events. [2023-08-03 22:02:45,103 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2023-08-03 22:02:45,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10855 conditions, 4525 events. 2751/4525 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 25804 event pairs, 943 based on Foata normal form. 26/3889 useless extension candidates. Maximal degree in co-relation 10847. Up to 1777 conditions per place. [2023-08-03 22:02:45,122 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 95 selfloop transitions, 18 changer transitions 3/119 dead transitions. [2023-08-03 22:02:45,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 119 transitions, 617 flow [2023-08-03 22:02:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:02:45,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:02:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 650 transitions. [2023-08-03 22:02:45,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2023-08-03 22:02:45,160 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 650 transitions. [2023-08-03 22:02:45,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 650 transitions. [2023-08-03 22:02:45,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:45,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 650 transitions. [2023-08-03 22:02:45,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,163 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 162 flow. Second operand 5 states and 650 transitions. [2023-08-03 22:02:45,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 119 transitions, 617 flow [2023-08-03 22:02:45,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 119 transitions, 599 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:02:45,168 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 287 flow [2023-08-03 22:02:45,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-08-03 22:02:45,169 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-08-03 22:02:45,169 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 287 flow [2023-08-03 22:02:45,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:45,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:45,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:02:45,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:45,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash 925079807, now seen corresponding path program 1 times [2023-08-03 22:02:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438675372] [2023-08-03 22:02:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438675372] [2023-08-03 22:02:45,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438675372] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:02:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736483160] [2023-08-03 22:02:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:45,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:45,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:02:45,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:02:45,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 22:02:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:45,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 22:02:45,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:02:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:45,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:02:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:45,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736483160] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:02:45,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:02:45,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 22:02:45,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006414431] [2023-08-03 22:02:45,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:02:45,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:02:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:45,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:02:45,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:02:45,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 265 [2023-08-03 22:02:45,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:45,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 265 [2023-08-03 22:02:45,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:45,512 INFO L124 PetriNetUnfolderBase]: 2510/4173 cut-off events. [2023-08-03 22:02:45,512 INFO L125 PetriNetUnfolderBase]: For 4223/4316 co-relation queries the response was YES. [2023-08-03 22:02:45,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12178 conditions, 4173 events. 2510/4173 cut-off events. For 4223/4316 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23655 event pairs, 786 based on Foata normal form. 77/3818 useless extension candidates. Maximal degree in co-relation 12167. Up to 3710 conditions per place. [2023-08-03 22:02:45,532 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 81 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-03 22:02:45,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 91 transitions, 608 flow [2023-08-03 22:02:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:02:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:02:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 507 transitions. [2023-08-03 22:02:45,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47830188679245284 [2023-08-03 22:02:45,533 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 507 transitions. [2023-08-03 22:02:45,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 507 transitions. [2023-08-03 22:02:45,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:45,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 507 transitions. [2023-08-03 22:02:45,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,536 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,536 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 287 flow. Second operand 4 states and 507 transitions. [2023-08-03 22:02:45,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 91 transitions, 608 flow [2023-08-03 22:02:45,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 91 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:02:45,540 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 307 flow [2023-08-03 22:02:45,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-08-03 22:02:45,540 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-08-03 22:02:45,540 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 307 flow [2023-08-03 22:02:45,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:45,541 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:45,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 22:02:45,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-03 22:02:45,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:45,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1755561335, now seen corresponding path program 1 times [2023-08-03 22:02:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:45,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105740673] [2023-08-03 22:02:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:02:45,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:45,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105740673] [2023-08-03 22:02:45,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105740673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:45,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:45,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:02:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704208879] [2023-08-03 22:02:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:45,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:02:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:02:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:02:45,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 265 [2023-08-03 22:02:45,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:45,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 265 [2023-08-03 22:02:45,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:45,890 INFO L124 PetriNetUnfolderBase]: 183/489 cut-off events. [2023-08-03 22:02:45,890 INFO L125 PetriNetUnfolderBase]: For 553/553 co-relation queries the response was YES. [2023-08-03 22:02:45,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 489 events. 183/489 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2338 event pairs, 17 based on Foata normal form. 112/539 useless extension candidates. Maximal degree in co-relation 1452. Up to 373 conditions per place. [2023-08-03 22:02:45,892 INFO L140 encePairwiseOnDemand]: 259/265 looper letters, 42 selfloop transitions, 6 changer transitions 1/53 dead transitions. [2023-08-03 22:02:45,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 347 flow [2023-08-03 22:02:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:02:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:02:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-03 22:02:45,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691823899371069 [2023-08-03 22:02:45,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-03 22:02:45,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-03 22:02:45,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:45,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-03 22:02:45,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,895 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 307 flow. Second operand 3 states and 373 transitions. [2023-08-03 22:02:45,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 347 flow [2023-08-03 22:02:45,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 311 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-03 22:02:45,897 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 176 flow [2023-08-03 22:02:45,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-08-03 22:02:45,898 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-08-03 22:02:45,898 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 176 flow [2023-08-03 22:02:45,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:45,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:45,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 22:02:45,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:45,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:45,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2033348207, now seen corresponding path program 1 times [2023-08-03 22:02:45,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:45,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168116761] [2023-08-03 22:02:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:45,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:02:45,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:45,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168116761] [2023-08-03 22:02:45,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168116761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:45,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:45,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:02:45,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606468166] [2023-08-03 22:02:45,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:45,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:02:45,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:45,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:02:45,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:02:45,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-03 22:02:45,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:45,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:45,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-03 22:02:45,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:46,093 INFO L124 PetriNetUnfolderBase]: 188/493 cut-off events. [2023-08-03 22:02:46,093 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2023-08-03 22:02:46,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 493 events. 188/493 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2161 event pairs, 112 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 1400. Up to 401 conditions per place. [2023-08-03 22:02:46,095 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 47 selfloop transitions, 7 changer transitions 2/59 dead transitions. [2023-08-03 22:02:46,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 354 flow [2023-08-03 22:02:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:02:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:02:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-08-03 22:02:46,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422641509433962 [2023-08-03 22:02:46,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-08-03 22:02:46,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-08-03 22:02:46,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:46,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-08-03 22:02:46,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,099 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 176 flow. Second operand 5 states and 586 transitions. [2023-08-03 22:02:46,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 354 flow [2023-08-03 22:02:46,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:02:46,101 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 201 flow [2023-08-03 22:02:46,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-08-03 22:02:46,102 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-08-03 22:02:46,102 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 201 flow [2023-08-03 22:02:46,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:46,102 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:46,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 22:02:46,102 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:46,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2020776004, now seen corresponding path program 1 times [2023-08-03 22:02:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:46,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544939368] [2023-08-03 22:02:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:46,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:02:46,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:46,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544939368] [2023-08-03 22:02:46,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544939368] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:02:46,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639501056] [2023-08-03 22:02:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:46,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:02:46,186 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) [2023-08-03 22:02:46,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 22:02:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:46,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-03 22:02:46,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:02:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:02:46,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:02:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:02:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639501056] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:02:46,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:02:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-08-03 22:02:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071574910] [2023-08-03 22:02:46,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:02:46,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:02:46,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:46,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:02:46,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:02:46,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 265 [2023-08-03 22:02:46,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 265 [2023-08-03 22:02:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:46,472 INFO L124 PetriNetUnfolderBase]: 204/542 cut-off events. [2023-08-03 22:02:46,472 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2023-08-03 22:02:46,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 542 events. 204/542 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2583 event pairs, 83 based on Foata normal form. 10/494 useless extension candidates. Maximal degree in co-relation 1556. Up to 216 conditions per place. [2023-08-03 22:02:46,473 INFO L140 encePairwiseOnDemand]: 258/265 looper letters, 66 selfloop transitions, 9 changer transitions 10/88 dead transitions. [2023-08-03 22:02:46,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 553 flow [2023-08-03 22:02:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:02:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:02:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2023-08-03 22:02:46,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671698113207547 [2023-08-03 22:02:46,475 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 619 transitions. [2023-08-03 22:02:46,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 619 transitions. [2023-08-03 22:02:46,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:46,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 619 transitions. [2023-08-03 22:02:46,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,478 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,478 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 201 flow. Second operand 5 states and 619 transitions. [2023-08-03 22:02:46,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 553 flow [2023-08-03 22:02:46,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:02:46,480 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 233 flow [2023-08-03 22:02:46,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-08-03 22:02:46,481 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-08-03 22:02:46,481 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 233 flow [2023-08-03 22:02:46,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:46,481 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:46,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 22:02:46,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:46,686 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:46,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash -779776827, now seen corresponding path program 1 times [2023-08-03 22:02:46,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:46,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440118851] [2023-08-03 22:02:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:46,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 22:02:46,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440118851] [2023-08-03 22:02:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440118851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:46,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:46,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:02:46,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884488389] [2023-08-03 22:02:46,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:46,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:02:46,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:02:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:02:46,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 265 [2023-08-03 22:02:46,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:46,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 265 [2023-08-03 22:02:46,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:46,887 INFO L124 PetriNetUnfolderBase]: 237/678 cut-off events. [2023-08-03 22:02:46,887 INFO L125 PetriNetUnfolderBase]: For 981/981 co-relation queries the response was YES. [2023-08-03 22:02:46,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 678 events. 237/678 cut-off events. For 981/981 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3547 event pairs, 162 based on Foata normal form. 3/603 useless extension candidates. Maximal degree in co-relation 2018. Up to 390 conditions per place. [2023-08-03 22:02:46,889 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 68 selfloop transitions, 8 changer transitions 16/94 dead transitions. [2023-08-03 22:02:46,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 638 flow [2023-08-03 22:02:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:02:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:02:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-08-03 22:02:46,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47094339622641507 [2023-08-03 22:02:46,891 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-08-03 22:02:46,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-08-03 22:02:46,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:46,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-08-03 22:02:46,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,894 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 233 flow. Second operand 5 states and 624 transitions. [2023-08-03 22:02:46,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 638 flow [2023-08-03 22:02:46,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 611 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 22:02:46,896 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 269 flow [2023-08-03 22:02:46,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2023-08-03 22:02:46,897 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-08-03 22:02:46,897 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 269 flow [2023-08-03 22:02:46,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:46,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:46,897 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:46,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 22:02:46,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:46,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:46,898 INFO L85 PathProgramCache]: Analyzing trace with hash 438156149, now seen corresponding path program 1 times [2023-08-03 22:02:46,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:46,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305145615] [2023-08-03 22:02:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:02:46,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:46,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305145615] [2023-08-03 22:02:46,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305145615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:46,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:46,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:02:46,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391935749] [2023-08-03 22:02:46,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:46,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:02:46,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:46,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:02:46,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:02:47,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 265 [2023-08-03 22:02:47,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:47,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 265 [2023-08-03 22:02:47,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:47,125 INFO L124 PetriNetUnfolderBase]: 100/348 cut-off events. [2023-08-03 22:02:47,125 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2023-08-03 22:02:47,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 348 events. 100/348 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1507 event pairs, 57 based on Foata normal form. 6/318 useless extension candidates. Maximal degree in co-relation 1021. Up to 271 conditions per place. [2023-08-03 22:02:47,126 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2023-08-03 22:02:47,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 436 flow [2023-08-03 22:02:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 22:02:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 22:02:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 681 transitions. [2023-08-03 22:02:47,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42830188679245285 [2023-08-03 22:02:47,128 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 681 transitions. [2023-08-03 22:02:47,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 681 transitions. [2023-08-03 22:02:47,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:47,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 681 transitions. [2023-08-03 22:02:47,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,131 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 269 flow. Second operand 6 states and 681 transitions. [2023-08-03 22:02:47,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 436 flow [2023-08-03 22:02:47,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 424 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 22:02:47,133 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 298 flow [2023-08-03 22:02:47,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2023-08-03 22:02:47,134 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2023-08-03 22:02:47,134 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 298 flow [2023-08-03 22:02:47,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:47,134 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:47,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 22:02:47,134 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:47,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2024576753, now seen corresponding path program 1 times [2023-08-03 22:02:47,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:47,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043739593] [2023-08-03 22:02:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:47,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:47,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:47,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043739593] [2023-08-03 22:02:47,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043739593] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:02:47,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410523307] [2023-08-03 22:02:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:47,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:02:47,209 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) [2023-08-03 22:02:47,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 22:02:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:47,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 22:02:47,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:02:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:47,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:02:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:47,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410523307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:02:47,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:02:47,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-03 22:02:47,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351640692] [2023-08-03 22:02:47,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:02:47,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:02:47,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:47,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:02:47,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:02:47,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 265 [2023-08-03 22:02:47,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:47,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 265 [2023-08-03 22:02:47,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:47,581 INFO L124 PetriNetUnfolderBase]: 100/345 cut-off events. [2023-08-03 22:02:47,581 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2023-08-03 22:02:47,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 345 events. 100/345 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1501 event pairs, 64 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 1024. Up to 125 conditions per place. [2023-08-03 22:02:47,582 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 62 selfloop transitions, 12 changer transitions 7/83 dead transitions. [2023-08-03 22:02:47,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 597 flow [2023-08-03 22:02:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 22:02:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 22:02:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1022 transitions. [2023-08-03 22:02:47,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42851153039832285 [2023-08-03 22:02:47,584 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1022 transitions. [2023-08-03 22:02:47,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1022 transitions. [2023-08-03 22:02:47,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:47,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1022 transitions. [2023-08-03 22:02:47,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.55555555555556) internal successors, (1022), 9 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,589 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,589 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 298 flow. Second operand 9 states and 1022 transitions. [2023-08-03 22:02:47,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 597 flow [2023-08-03 22:02:47,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 83 transitions, 587 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 22:02:47,592 INFO L231 Difference]: Finished difference. Result has 77 places, 48 transitions, 302 flow [2023-08-03 22:02:47,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=302, PETRI_PLACES=77, PETRI_TRANSITIONS=48} [2023-08-03 22:02:47,592 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2023-08-03 22:02:47,592 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 48 transitions, 302 flow [2023-08-03 22:02:47,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:47,592 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:47,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 22:02:47,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:47,797 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:47,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:47,798 INFO L85 PathProgramCache]: Analyzing trace with hash 814087426, now seen corresponding path program 1 times [2023-08-03 22:02:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:47,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831913986] [2023-08-03 22:02:47,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:47,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:02:47,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:47,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831913986] [2023-08-03 22:02:47,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831913986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:47,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:47,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:02:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672857259] [2023-08-03 22:02:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:47,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:02:47,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:47,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:02:47,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:02:47,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 265 [2023-08-03 22:02:47,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 48 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:47,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:47,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 265 [2023-08-03 22:02:47,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:48,061 INFO L124 PetriNetUnfolderBase]: 94/305 cut-off events. [2023-08-03 22:02:48,062 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2023-08-03 22:02:48,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 305 events. 94/305 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1234 event pairs, 66 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 928. Up to 199 conditions per place. [2023-08-03 22:02:48,063 INFO L140 encePairwiseOnDemand]: 256/265 looper letters, 58 selfloop transitions, 11 changer transitions 2/73 dead transitions. [2023-08-03 22:02:48,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 545 flow [2023-08-03 22:02:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 22:02:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 22:02:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1010 transitions. [2023-08-03 22:02:48,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42348008385744235 [2023-08-03 22:02:48,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1010 transitions. [2023-08-03 22:02:48,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1010 transitions. [2023-08-03 22:02:48,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:48,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1010 transitions. [2023-08-03 22:02:48,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,069 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,069 INFO L175 Difference]: Start difference. First operand has 77 places, 48 transitions, 302 flow. Second operand 9 states and 1010 transitions. [2023-08-03 22:02:48,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 545 flow [2023-08-03 22:02:48,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 505 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-08-03 22:02:48,071 INFO L231 Difference]: Finished difference. Result has 77 places, 49 transitions, 300 flow [2023-08-03 22:02:48,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=77, PETRI_TRANSITIONS=49} [2023-08-03 22:02:48,072 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2023-08-03 22:02:48,072 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 49 transitions, 300 flow [2023-08-03 22:02:48,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:48,072 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] [2023-08-03 22:02:48,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 22:02:48,072 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:48,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1571349175, now seen corresponding path program 1 times [2023-08-03 22:02:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:48,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047038109] [2023-08-03 22:02:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:48,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047038109] [2023-08-03 22:02:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047038109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:02:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554569708] [2023-08-03 22:02:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:48,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:48,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:02:48,165 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) [2023-08-03 22:02:48,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 22:02:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:48,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-03 22:02:48,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:02:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:48,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:02:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554569708] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:02:48,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:02:48,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-03 22:02:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727156151] [2023-08-03 22:02:48,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:02:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 22:02:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 22:02:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-03 22:02:48,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 265 [2023-08-03 22:02:48,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 49 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:48,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 265 [2023-08-03 22:02:48,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:48,551 INFO L124 PetriNetUnfolderBase]: 87/270 cut-off events. [2023-08-03 22:02:48,551 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-03 22:02:48,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 270 events. 87/270 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1089 event pairs, 44 based on Foata normal form. 7/251 useless extension candidates. Maximal degree in co-relation 818. Up to 105 conditions per place. [2023-08-03 22:02:48,552 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 51 selfloop transitions, 11 changer transitions 13/77 dead transitions. [2023-08-03 22:02:48,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 553 flow [2023-08-03 22:02:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 22:02:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 22:02:48,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1203 transitions. [2023-08-03 22:02:48,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41269296740994854 [2023-08-03 22:02:48,554 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1203 transitions. [2023-08-03 22:02:48,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1203 transitions. [2023-08-03 22:02:48,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:48,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1203 transitions. [2023-08-03 22:02:48,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.36363636363636) internal successors, (1203), 11 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,559 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,559 INFO L175 Difference]: Start difference. First operand has 77 places, 49 transitions, 300 flow. Second operand 11 states and 1203 transitions. [2023-08-03 22:02:48,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 553 flow [2023-08-03 22:02:48,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 527 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-03 22:02:48,562 INFO L231 Difference]: Finished difference. Result has 81 places, 44 transitions, 268 flow [2023-08-03 22:02:48,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=268, PETRI_PLACES=81, PETRI_TRANSITIONS=44} [2023-08-03 22:02:48,562 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2023-08-03 22:02:48,562 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 44 transitions, 268 flow [2023-08-03 22:02:48,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:48,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:48,562 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] [2023-08-03 22:02:48,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 22:02:48,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 22:02:48,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:48,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:48,768 INFO L85 PathProgramCache]: Analyzing trace with hash 449039922, now seen corresponding path program 1 times [2023-08-03 22:02:48,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:48,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306956138] [2023-08-03 22:02:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:48,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:02:48,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:48,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306956138] [2023-08-03 22:02:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306956138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:02:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:02:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 22:02:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786730517] [2023-08-03 22:02:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:02:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 22:02:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 22:02:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-03 22:02:48,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 265 [2023-08-03 22:02:48,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 44 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 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) [2023-08-03 22:02:48,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:48,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 265 [2023-08-03 22:02:48,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:49,066 INFO L124 PetriNetUnfolderBase]: 63/202 cut-off events. [2023-08-03 22:02:49,066 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2023-08-03 22:02:49,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 202 events. 63/202 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 724 event pairs, 23 based on Foata normal form. 14/200 useless extension candidates. Maximal degree in co-relation 635. Up to 66 conditions per place. [2023-08-03 22:02:49,067 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 24 selfloop transitions, 2 changer transitions 37/64 dead transitions. [2023-08-03 22:02:49,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 64 transitions, 464 flow [2023-08-03 22:02:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 22:02:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 22:02:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1191 transitions. [2023-08-03 22:02:49,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085763293310463 [2023-08-03 22:02:49,069 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1191 transitions. [2023-08-03 22:02:49,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1191 transitions. [2023-08-03 22:02:49,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:49,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1191 transitions. [2023-08-03 22:02:49,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.27272727272727) internal successors, (1191), 11 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:49,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:49,074 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:49,074 INFO L175 Difference]: Start difference. First operand has 81 places, 44 transitions, 268 flow. Second operand 11 states and 1191 transitions. [2023-08-03 22:02:49,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 64 transitions, 464 flow [2023-08-03 22:02:49,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 419 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-03 22:02:49,076 INFO L231 Difference]: Finished difference. Result has 74 places, 23 transitions, 123 flow [2023-08-03 22:02:49,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=123, PETRI_PLACES=74, PETRI_TRANSITIONS=23} [2023-08-03 22:02:49,076 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-08-03 22:02:49,076 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 23 transitions, 123 flow [2023-08-03 22:02:49,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 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) [2023-08-03 22:02:49,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:02:49,077 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] [2023-08-03 22:02:49,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 22:02:49,077 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:02:49,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:02:49,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1583332864, now seen corresponding path program 1 times [2023-08-03 22:02:49,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:02:49,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263257520] [2023-08-03 22:02:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:49,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:02:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:49,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:02:49,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263257520] [2023-08-03 22:02:49,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263257520] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:02:49,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821722312] [2023-08-03 22:02:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:02:49,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:02:49,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:02:49,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:02:49,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 22:02:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:02:49,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-03 22:02:49,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:02:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:49,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:02:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:02:49,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821722312] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:02:49,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:02:49,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-03 22:02:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749998941] [2023-08-03 22:02:49,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:02:49,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 22:02:49,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:02:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 22:02:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-03 22:02:49,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 265 [2023-08-03 22:02:49,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 23 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:49,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:02:49,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 265 [2023-08-03 22:02:49,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:02:49,577 INFO L124 PetriNetUnfolderBase]: 31/90 cut-off events. [2023-08-03 22:02:49,577 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-08-03 22:02:49,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 90 events. 31/90 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 236 event pairs, 5 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 308. Up to 31 conditions per place. [2023-08-03 22:02:49,577 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-03 22:02:49,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 35 transitions, 252 flow [2023-08-03 22:02:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 22:02:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 22:02:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 959 transitions. [2023-08-03 22:02:49,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020964360587002 [2023-08-03 22:02:49,579 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 959 transitions. [2023-08-03 22:02:49,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 959 transitions. [2023-08-03 22:02:49,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:02:49,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 959 transitions. [2023-08-03 22:02:49,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.55555555555556) internal successors, (959), 9 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:49,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:49,583 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 265.0) internal successors, (2650), 10 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:49,583 INFO L175 Difference]: Start difference. First operand has 74 places, 23 transitions, 123 flow. Second operand 9 states and 959 transitions. [2023-08-03 22:02:49,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 35 transitions, 252 flow [2023-08-03 22:02:49,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 220 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-03 22:02:49,584 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-03 22:02:49,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=9, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-03 22:02:49,585 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-08-03 22:02:49,585 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-03 22:02:49,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:02:49,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-03 22:02:49,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-03 22:02:49,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-03 22:02:49,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-03 22:02:49,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-03 22:02:49,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-03 22:02:49,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-08-03 22:02:49,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-08-03 22:02:49,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 22:02:49,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 22:02:49,790 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:02:49,790 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-03 22:02:49,792 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:02:49,792 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:02:49,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:02:49 BasicIcfg [2023-08-03 22:02:49,797 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:02:49,797 INFO L158 Benchmark]: Toolchain (without parser) took 14669.55ms. Allocated memory was 323.0MB in the beginning and 572.5MB in the end (delta: 249.6MB). Free memory was 279.8MB in the beginning and 257.4MB in the end (delta: 22.3MB). Peak memory consumption was 273.4MB. Max. memory is 16.0GB. [2023-08-03 22:02:49,797 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 323.0MB. Free memory is still 280.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:02:49,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.77ms. Allocated memory is still 323.0MB. Free memory was 279.4MB in the beginning and 260.3MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 22:02:49,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.66ms. Allocated memory is still 323.0MB. Free memory was 259.9MB in the beginning and 257.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:02:49,797 INFO L158 Benchmark]: Boogie Preprocessor took 24.28ms. Allocated memory is still 323.0MB. Free memory was 257.8MB in the beginning and 256.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:02:49,798 INFO L158 Benchmark]: RCFGBuilder took 278.17ms. Allocated memory is still 323.0MB. Free memory was 256.4MB in the beginning and 241.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 22:02:49,798 INFO L158 Benchmark]: TraceAbstraction took 13990.41ms. Allocated memory was 323.0MB in the beginning and 572.5MB in the end (delta: 249.6MB). Free memory was 241.1MB in the beginning and 257.4MB in the end (delta: -16.4MB). Peak memory consumption was 233.6MB. Max. memory is 16.0GB. [2023-08-03 22:02:49,799 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 323.0MB. Free memory is still 280.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 335.77ms. Allocated memory is still 323.0MB. Free memory was 279.4MB in the beginning and 260.3MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.66ms. Allocated memory is still 323.0MB. Free memory was 259.9MB in the beginning and 257.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.28ms. Allocated memory is still 323.0MB. Free memory was 257.8MB in the beginning and 256.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 278.17ms. Allocated memory is still 323.0MB. Free memory was 256.4MB in the beginning and 241.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 13990.41ms. Allocated memory was 323.0MB in the beginning and 572.5MB in the end (delta: 249.6MB). Free memory was 241.1MB in the beginning and 257.4MB in the end (delta: -16.4MB). Peak memory consumption was 233.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 98 PlacesBefore, 27 PlacesAfterwards, 101 TransitionsBefore, 26 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 93 TotalNumberOfCompositions, 4553 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2092, independent: 1857, independent conditional: 0, independent unconditional: 1857, dependent: 235, dependent conditional: 0, dependent unconditional: 235, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1117, independent: 1079, independent conditional: 0, independent unconditional: 1079, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2092, independent: 778, independent conditional: 0, independent unconditional: 778, dependent: 197, dependent conditional: 0, dependent unconditional: 197, unknown: 1117, unknown conditional: 0, unknown unconditional: 1117] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 129 PlacesBefore, 42 PlacesAfterwards, 134 TransitionsBefore, 41 TransitionsAfterwards, 5980 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 125 TotalNumberOfCompositions, 14005 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6666, independent: 6381, independent conditional: 0, independent unconditional: 6381, dependent: 285, dependent conditional: 0, dependent unconditional: 285, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3170, independent: 3112, independent conditional: 0, independent unconditional: 3112, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6666, independent: 3269, independent conditional: 0, independent unconditional: 3269, dependent: 227, dependent conditional: 0, dependent unconditional: 227, unknown: 3170, unknown conditional: 0, unknown unconditional: 3170] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 131, Positive conditional cache size: 0, Positive unconditional cache size: 131, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 130 PlacesBefore, 43 PlacesAfterwards, 135 TransitionsBefore, 42 TransitionsAfterwards, 5980 CoEnabledTransitionPairs, 8 FixpointIterations, 45 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 6 ChoiceCompositions, 130 TotalNumberOfCompositions, 15893 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6667, independent: 6306, independent conditional: 0, independent unconditional: 6306, dependent: 361, dependent conditional: 0, dependent unconditional: 361, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3177, independent: 3111, independent conditional: 0, independent unconditional: 3111, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6667, independent: 3195, independent conditional: 0, independent unconditional: 3195, dependent: 295, dependent conditional: 0, dependent unconditional: 295, unknown: 3177, unknown conditional: 0, unknown unconditional: 3177] , Statistics on independence cache: Total cache size (in pairs): 133, Positive cache size: 106, Positive conditional cache size: 0, Positive unconditional cache size: 106, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 126 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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, 151 locations, 9 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: 3.2s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 105 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=100occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 115 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 151 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.1s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1062 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 774 mSDsluCounter, 603 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 475 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3040 IncrementalHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 128 mSDtfsCounter, 3040 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 14 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=5, InterpolantAutomatonStates: 90, 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, 1.3s InterpolantComputationTime, 304 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 2390 SizeOfPredicates, 14 NumberOfNonLiveVariables, 795 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 58/91 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! [2023-08-03 22:02:49,835 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...