/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_neg_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:02:33,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:02:33,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:02:33,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:02:33,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:02:33,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:02:33,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:02:33,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:02:33,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:02:33,708 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:02:33,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:02:33,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:02:33,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:02:33,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:02:33,709 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:02:33,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:02:33,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:02:33,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:02:33,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:02:33,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:02:33,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:02:33,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:02:33,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:02:33,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:02:33,717 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:02:33,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:02:33,717 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:02:33,717 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:02:33,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:02:33,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:02:33,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:33,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:02:33,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:02:33,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:02:33,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:02:33,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:02:33,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:02:33,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:02:33,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:02:33,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:02:33,719 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:02:33,719 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:02:33,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:02:33,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:02:33,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:02:33,915 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:02:33,915 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:02:33,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_neg_bound2.i [2023-08-03 16:02:34,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:02:35,148 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:02:35,148 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_41-traces-ex-7_unknown_1_neg_bound2.i [2023-08-03 16:02:35,156 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e624b789c/6eec8745fc8746f8a38722cb82ff4751/FLAGbbfa0cf28 [2023-08-03 16:02:35,167 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e624b789c/6eec8745fc8746f8a38722cb82ff4751 [2023-08-03 16:02:35,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:02:35,169 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:02:35,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:35,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:02:35,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:02:35,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ffaa8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35, skipping insertion in model container [2023-08-03 16:02:35,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,212 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:02:35,327 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_41-traces-ex-7_unknown_1_neg_bound2.i[1097,1110] [2023-08-03 16:02:35,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:35,455 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:02:35,462 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_41-traces-ex-7_unknown_1_neg_bound2.i[1097,1110] [2023-08-03 16:02:35,475 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:02:35,477 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:02:35,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:35,507 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:02:35,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35 WrapperNode [2023-08-03 16:02:35,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:35,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:35,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:02:35,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:02:35,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,549 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-08-03 16:02:35,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:35,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:02:35,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:02:35,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:02:35,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,565 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:02:35,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:02:35,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:02:35,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:02:35,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (1/1) ... [2023-08-03 16:02:35,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:35,593 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 16:02:35,597 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 16:02:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:02:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:02:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:02:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:02:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:02:35,616 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:02:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:02:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:02:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:02:35,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:02:35,617 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 16:02:35,690 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:02:35,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:02:35,785 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:02:35,789 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:02:35,789 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:02:35,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:35 BoogieIcfgContainer [2023-08-03 16:02:35,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:02:35,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:02:35,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:02:35,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:02:35,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:02:35" (1/3) ... [2023-08-03 16:02:35,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2041476b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:35, skipping insertion in model container [2023-08-03 16:02:35,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:35" (2/3) ... [2023-08-03 16:02:35,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2041476b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:35, skipping insertion in model container [2023-08-03 16:02:35,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:35" (3/3) ... [2023-08-03 16:02:35,796 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_41-traces-ex-7_unknown_1_neg_bound2.i [2023-08-03 16:02:35,802 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:02:35,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:02:35,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:02:35,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:02:35,836 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:35,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 139 flow [2023-08-03 16:02:35,890 INFO L124 PetriNetUnfolderBase]: 4/91 cut-off events. [2023-08-03 16:02:35,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:35,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 4/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2023-08-03 16:02:35,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 139 flow [2023-08-03 16:02:35,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 123 flow [2023-08-03 16:02:35,898 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:35,904 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 59 transitions, 123 flow [2023-08-03 16:02:35,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 59 transitions, 123 flow [2023-08-03 16:02:35,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 123 flow [2023-08-03 16:02:35,923 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2023-08-03 16:02:35,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:35,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 2/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2023-08-03 16:02:35,924 INFO L119 LiptonReduction]: Number of co-enabled transitions 440 [2023-08-03 16:02:37,493 INFO L134 LiptonReduction]: Checked pairs total: 947 [2023-08-03 16:02:37,493 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-03 16:02:37,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:37,514 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;@7a1f027b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:37,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:02:37,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:37,521 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 16:02:37,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:37,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:37,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 16:02:37,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:37,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash 223642910, now seen corresponding path program 1 times [2023-08-03 16:02:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234150979] [2023-08-03 16:02:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:37,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:37,678 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 16:02:37,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:37,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234150979] [2023-08-03 16:02:37,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234150979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:37,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:37,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037135532] [2023-08-03 16:02:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:37,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:37,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 113 [2023-08-03 16:02:37,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 16:02:37,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:37,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 113 [2023-08-03 16:02:37,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:37,742 INFO L124 PetriNetUnfolderBase]: 18/54 cut-off events. [2023-08-03 16:02:37,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:37,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 54 events. 18/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 165 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 92. Up to 43 conditions per place. [2023-08-03 16:02:37,743 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 13 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-03 16:02:37,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 18 transitions, 71 flow [2023-08-03 16:02:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-08-03 16:02:37,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5693215339233039 [2023-08-03 16:02:37,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-08-03 16:02:37,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-08-03 16:02:37,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:37,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-08-03 16:02:37,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 16:02:37,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 16:02:37,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 16:02:37,764 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 33 flow. Second operand 3 states and 193 transitions. [2023-08-03 16:02:37,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 18 transitions, 71 flow [2023-08-03 16:02:37,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 71 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:37,767 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 41 flow [2023-08-03 16:02:37,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-03 16:02:37,773 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-08-03 16:02:37,773 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 41 flow [2023-08-03 16:02:37,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 16:02:37,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:37,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:02:37,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:02:37,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:37,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:37,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1648431267, now seen corresponding path program 1 times [2023-08-03 16:02:37,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:37,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529644299] [2023-08-03 16:02:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:37,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:37,799 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:02:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:37,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:02:37,821 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:02:37,822 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:02:37,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:02:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:02:37,823 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:02:37,825 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:02:37,825 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:02:37,836 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:37,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 168 flow [2023-08-03 16:02:37,860 INFO L124 PetriNetUnfolderBase]: 6/131 cut-off events. [2023-08-03 16:02:37,860 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:37,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 131 events. 6/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 242 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-03 16:02:37,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 78 transitions, 168 flow [2023-08-03 16:02:37,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2023-08-03 16:02:37,861 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:37,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 70 transitions, 152 flow [2023-08-03 16:02:37,861 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 70 transitions, 152 flow [2023-08-03 16:02:37,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 152 flow [2023-08-03 16:02:37,879 INFO L124 PetriNetUnfolderBase]: 3/107 cut-off events. [2023-08-03 16:02:37,880 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:37,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 107 events. 3/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 146 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-03 16:02:37,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 1100 [2023-08-03 16:02:39,488 INFO L134 LiptonReduction]: Checked pairs total: 2724 [2023-08-03 16:02:39,488 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-03 16:02:39,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:39,491 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;@7a1f027b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:39,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:02:39,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:39,493 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 16:02:39,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:39,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:39,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 16:02:39,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:39,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:39,494 INFO L85 PathProgramCache]: Analyzing trace with hash 356291245, now seen corresponding path program 1 times [2023-08-03 16:02:39,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:39,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433819750] [2023-08-03 16:02:39,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:39,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:39,557 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 16:02:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433819750] [2023-08-03 16:02:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433819750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250229645] [2023-08-03 16:02:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:39,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:39,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 128 [2023-08-03 16:02:39,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 16:02:39,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:39,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 128 [2023-08-03 16:02:39,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:39,635 INFO L124 PetriNetUnfolderBase]: 219/428 cut-off events. [2023-08-03 16:02:39,636 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 16:02:39,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 428 events. 219/428 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1967 event pairs, 96 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 196. Up to 384 conditions per place. [2023-08-03 16:02:39,638 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 19 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-03 16:02:39,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 106 flow [2023-08-03 16:02:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-03 16:02:39,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963541666666666 [2023-08-03 16:02:39,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-03 16:02:39,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-03 16:02:39,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:39,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-03 16:02:39,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 16:02:39,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 16:02:39,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 16:02:39,643 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 229 transitions. [2023-08-03 16:02:39,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 106 flow [2023-08-03 16:02:39,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 104 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:39,644 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 64 flow [2023-08-03 16:02:39,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-03 16:02:39,645 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-03 16:02:39,645 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 64 flow [2023-08-03 16:02:39,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 16:02:39,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:39,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:39,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:02:39,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:39,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash -544302196, now seen corresponding path program 1 times [2023-08-03 16:02:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902868882] [2023-08-03 16:02:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:39,680 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 16:02:39,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902868882] [2023-08-03 16:02:39,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902868882] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940814419] [2023-08-03 16:02:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:39,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:39,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:39,684 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 16:02:39,705 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 16:02:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:39,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:02:39,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:39,805 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 16:02:39,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:02:39,817 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 16:02:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940814419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:02:39,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:02:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:02:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471716994] [2023-08-03 16:02:39,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:02:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:39,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 128 [2023-08-03 16:02:39,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:39,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:39,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 128 [2023-08-03 16:02:39,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:39,882 INFO L124 PetriNetUnfolderBase]: 207/380 cut-off events. [2023-08-03 16:02:39,882 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-03 16:02:39,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 380 events. 207/380 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1642 event pairs, 16 based on Foata normal form. 4/384 useless extension candidates. Maximal degree in co-relation 214. Up to 256 conditions per place. [2023-08-03 16:02:39,884 INFO L140 encePairwiseOnDemand]: 124/128 looper letters, 25 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-08-03 16:02:39,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 146 flow [2023-08-03 16:02:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-08-03 16:02:39,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58984375 [2023-08-03 16:02:39,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-08-03 16:02:39,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-08-03 16:02:39,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:39,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-08-03 16:02:39,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 16:02:39,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 16:02:39,904 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 16:02:39,904 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 64 flow. Second operand 4 states and 302 transitions. [2023-08-03 16:02:39,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 146 flow [2023-08-03 16:02:39,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:02:39,905 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 82 flow [2023-08-03 16:02:39,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-03 16:02:39,906 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-03 16:02:39,906 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 82 flow [2023-08-03 16:02:39,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:39,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:39,906 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:02:39,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:02:40,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:40,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:40,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:40,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1085522479, now seen corresponding path program 1 times [2023-08-03 16:02:40,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:40,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163958548] [2023-08-03 16:02:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:40,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:40,222 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 16:02:40,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163958548] [2023-08-03 16:02:40,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163958548] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:40,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394092966] [2023-08-03 16:02:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:40,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:40,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:40,226 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 16:02:40,245 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 16:02:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:40,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:02:40,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:40,306 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 16:02:40,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:02:40,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394092966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:40,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:02:40,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:02:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090970648] [2023-08-03 16:02:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:40,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:40,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:40,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:40,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:02:40,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 128 [2023-08-03 16:02:40,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 16:02:40,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:40,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 128 [2023-08-03 16:02:40,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:40,367 INFO L124 PetriNetUnfolderBase]: 176/321 cut-off events. [2023-08-03 16:02:40,367 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-03 16:02:40,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 321 events. 176/321 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1287 event pairs, 6 based on Foata normal form. 20/341 useless extension candidates. Maximal degree in co-relation 187. Up to 255 conditions per place. [2023-08-03 16:02:40,368 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 25 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-03 16:02:40,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 152 flow [2023-08-03 16:02:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:02:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:02:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2023-08-03 16:02:40,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765625 [2023-08-03 16:02:40,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2023-08-03 16:02:40,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2023-08-03 16:02:40,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:40,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2023-08-03 16:02:40,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 16:02:40,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:40,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:40,372 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 82 flow. Second operand 5 states and 369 transitions. [2023-08-03 16:02:40,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 152 flow [2023-08-03 16:02:40,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 145 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:40,373 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 71 flow [2023-08-03 16:02:40,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2023-08-03 16:02:40,374 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-03 16:02:40,374 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 71 flow [2023-08-03 16:02:40,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 16:02:40,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:40,374 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:40,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 16:02:40,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:40,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:40,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash -490121172, now seen corresponding path program 1 times [2023-08-03 16:02:40,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:40,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143589964] [2023-08-03 16:02:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:40,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:40,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:02:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:40,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:02:40,615 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:02:40,615 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:02:40,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:02:40,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:02:40,615 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-03 16:02:40,618 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:02:40,618 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:02:40,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:02:40 BasicIcfg [2023-08-03 16:02:40,639 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:02:40,639 INFO L158 Benchmark]: Toolchain (without parser) took 5469.71ms. Allocated memory was 373.3MB in the beginning and 503.3MB in the end (delta: 130.0MB). Free memory was 338.5MB in the beginning and 251.2MB in the end (delta: 87.4MB). Peak memory consumption was 219.5MB. Max. memory is 16.0GB. [2023-08-03 16:02:40,639 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 373.3MB. Free memory was 330.1MB in the beginning and 329.9MB in the end (delta: 244.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:40,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.23ms. Allocated memory is still 373.3MB. Free memory was 338.5MB in the beginning and 319.2MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:02:40,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.75ms. Allocated memory is still 373.3MB. Free memory was 319.2MB in the beginning and 317.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:40,640 INFO L158 Benchmark]: Boogie Preprocessor took 20.11ms. Allocated memory is still 373.3MB. Free memory was 317.1MB in the beginning and 316.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:40,640 INFO L158 Benchmark]: RCFGBuilder took 220.57ms. Allocated memory is still 373.3MB. Free memory was 316.0MB in the beginning and 303.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 16:02:40,640 INFO L158 Benchmark]: TraceAbstraction took 4846.37ms. Allocated memory was 373.3MB in the beginning and 503.3MB in the end (delta: 130.0MB). Free memory was 302.5MB in the beginning and 251.2MB in the end (delta: 51.3MB). Peak memory consumption was 181.7MB. Max. memory is 16.0GB. [2023-08-03 16:02:40,641 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 373.3MB. Free memory was 330.1MB in the beginning and 329.9MB in the end (delta: 244.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 338.23ms. Allocated memory is still 373.3MB. Free memory was 338.5MB in the beginning and 319.2MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.75ms. Allocated memory is still 373.3MB. Free memory was 319.2MB in the beginning and 317.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 20.11ms. Allocated memory is still 373.3MB. Free memory was 317.1MB in the beginning and 316.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 220.57ms. Allocated memory is still 373.3MB. Free memory was 316.0MB in the beginning and 303.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4846.37ms. Allocated memory was 373.3MB in the beginning and 503.3MB in the end (delta: 130.0MB). Free memory was 302.5MB in the beginning and 251.2MB in the end (delta: 51.3MB). Peak memory consumption was 181.7MB. 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: 1.6s, 61 PlacesBefore, 17 PlacesAfterwards, 59 TransitionsBefore, 14 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 947 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 553, independent: 465, independent conditional: 0, independent unconditional: 465, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 232, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 553, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 232, unknown conditional: 0, unknown unconditional: 232] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 74 PlacesBefore, 26 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1100 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 50 TotalNumberOfCompositions, 2724 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1093, independent: 955, independent conditional: 0, independent unconditional: 955, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 511, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1093, independent: 469, independent conditional: 0, independent unconditional: 469, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 511, unknown conditional: 0, unknown unconditional: 511] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id[2]; [L694] 0 int asdf=0; VAL [A={3:0}, D={4:0}, asdf=0, g=0, id={5:0}] [L694] COND TRUE 0 asdf<2 [L694] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, asdf=0, g=0, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-2] [L694] 0 asdf++ VAL [A={3:0}, D={4:0}, arg={0:0}, asdf=1, g=0, id={5:0}] [L694] COND TRUE 0 asdf<2 [L694] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, asdf=1, g=0, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-1] [L694] 0 asdf++ VAL [A={3:0}, D={4:0}, arg={0:0}, asdf=2, g=0, id={5:0}] [L694] COND FALSE 0 !(asdf<2) [L698] CALL 0 __VERIFIER_assert(!(g == 0)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, D={4:0}, \old(cond)=0, arg={0:0}, cond=0, g=0] - UnprovableResult [Line: 694]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 77 locations, 2 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: 2.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 88 locations, 2 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 9 mSDtfsCounter, 164 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 11/19 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-03 16:02:40,652 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...