/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_28-race_reach_45-escape_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:04:02,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:04:02,614 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:04:02,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:04:02,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:04:02,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:04:02,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:04:02,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:04:02,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:04:02,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:04:02,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:04:02,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:04:02,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:04:02,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:04:02,639 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:04:02,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:04:02,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:04:02,640 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:04:02,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:04:02,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:04:02,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:04:02,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:04:02,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:04:02,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:04:02,642 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:04:02,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:04:02,642 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:04:02,643 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:04:02,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:04:02,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:04:02,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:04:02,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:04:02,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:04:02,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:04:02,645 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:04:02,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:04:02,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:04:02,645 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:04:02,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:04:02,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:04:02,646 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:04:02,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:04:02,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:04:02,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:04:02,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:04:02,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:04:02,853 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:04:02,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_45-escape_racing_bound2.i [2023-08-03 16:04:03,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:04:04,148 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:04:04,149 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_45-escape_racing_bound2.i [2023-08-03 16:04:04,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58012279f/93da8344f74f40f49576f4eac3ab09b2/FLAG26182ed89 [2023-08-03 16:04:04,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58012279f/93da8344f74f40f49576f4eac3ab09b2 [2023-08-03 16:04:04,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:04:04,181 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:04:04,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:04:04,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:04:04,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:04:04,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fd8cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04, skipping insertion in model container [2023-08-03 16:04:04,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,223 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:04:04,472 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_28-race_reach_45-escape_racing_bound2.i[30176,30189] [2023-08-03 16:04:04,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:04:04,504 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:04:04,532 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 16:04:04,533 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 16:04:04,548 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_28-race_reach_45-escape_racing_bound2.i[30176,30189] [2023-08-03 16:04:04,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:04:04,601 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:04:04,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04 WrapperNode [2023-08-03 16:04:04,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:04:04,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:04:04,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:04:04,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:04:04,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,644 INFO L138 Inliner]: procedures = 170, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-08-03 16:04:04,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:04:04,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:04:04,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:04:04,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:04:04,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:04:04,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:04:04,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:04:04,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:04:04,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (1/1) ... [2023-08-03 16:04:04,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:04:04,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:04,693 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 16:04:04,706 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 16:04:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:04:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:04:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:04:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:04:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:04:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:04:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:04:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:04:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:04:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:04:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:04:04,732 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 16:04:04,827 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:04:04,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:04:04,995 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:04:05,001 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:04:05,001 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-03 16:04:05,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:04:05 BoogieIcfgContainer [2023-08-03 16:04:05,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:04:05,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:04:05,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:04:05,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:04:05,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:04:04" (1/3) ... [2023-08-03 16:04:05,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c12ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:04:05, skipping insertion in model container [2023-08-03 16:04:05,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:04" (2/3) ... [2023-08-03 16:04:05,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c12ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:04:05, skipping insertion in model container [2023-08-03 16:04:05,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:04:05" (3/3) ... [2023-08-03 16:04:05,009 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_45-escape_racing_bound2.i [2023-08-03 16:04:05,016 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:04:05,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:04:05,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:04:05,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:04:05,101 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 16:04:05,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 116 transitions, 240 flow [2023-08-03 16:04:05,198 INFO L124 PetriNetUnfolderBase]: 17/153 cut-off events. [2023-08-03 16:04:05,198 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:04:05,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 153 events. 17/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 376 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-03 16:04:05,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 116 transitions, 240 flow [2023-08-03 16:04:05,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 111 transitions, 227 flow [2023-08-03 16:04:05,216 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:04:05,224 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 111 transitions, 227 flow [2023-08-03 16:04:05,227 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 111 transitions, 227 flow [2023-08-03 16:04:05,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 111 transitions, 227 flow [2023-08-03 16:04:05,256 INFO L124 PetriNetUnfolderBase]: 16/148 cut-off events. [2023-08-03 16:04:05,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:05,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 148 events. 16/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 359 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-03 16:04:05,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 2838 [2023-08-03 16:04:08,397 INFO L134 LiptonReduction]: Checked pairs total: 4947 [2023-08-03 16:04:08,398 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-03 16:04:08,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:08,415 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;@7425325c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:08,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:04:08,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:08,419 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 16:04:08,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:08,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:08,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:04:08,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:08,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:08,424 INFO L85 PathProgramCache]: Analyzing trace with hash 13588385, now seen corresponding path program 1 times [2023-08-03 16:04:08,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:08,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414025592] [2023-08-03 16:04:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:08,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:08,630 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 16:04:08,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414025592] [2023-08-03 16:04:08,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414025592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:08,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:08,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:04:08,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810867816] [2023-08-03 16:04:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:08,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:08,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:08,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 209 [2023-08-03 16:04:08,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 32 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 16:04:08,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:08,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 209 [2023-08-03 16:04:08,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:08,752 INFO L124 PetriNetUnfolderBase]: 72/186 cut-off events. [2023-08-03 16:04:08,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:08,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 186 events. 72/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 775 event pairs, 0 based on Foata normal form. 9/175 useless extension candidates. Maximal degree in co-relation 334. Up to 153 conditions per place. [2023-08-03 16:04:08,755 INFO L140 encePairwiseOnDemand]: 197/209 looper letters, 24 selfloop transitions, 2 changer transitions 4/33 dead transitions. [2023-08-03 16:04:08,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 129 flow [2023-08-03 16:04:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-08-03 16:04:08,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406698564593302 [2023-08-03 16:04:08,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-08-03 16:04:08,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-08-03 16:04:08,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:08,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-08-03 16:04:08,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 16:04:08,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 16:04:08,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 16:04:08,779 INFO L175 Difference]: Start difference. First operand has 27 places, 32 transitions, 69 flow. Second operand 3 states and 339 transitions. [2023-08-03 16:04:08,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 129 flow [2023-08-03 16:04:08,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:08,783 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 51 flow [2023-08-03 16:04:08,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-08-03 16:04:08,787 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-03 16:04:08,787 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 51 flow [2023-08-03 16:04:08,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 16:04:08,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:08,787 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:04:08,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:04:08,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:08,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 178935281, now seen corresponding path program 1 times [2023-08-03 16:04:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073186982] [2023-08-03 16:04:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:08,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:04:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:08,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:04:08,851 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:04:08,852 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:04:08,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:04:08,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:04:08,854 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:04:08,856 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:04:08,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:04:08,875 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 16:04:08,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 151 transitions, 320 flow [2023-08-03 16:04:08,904 INFO L124 PetriNetUnfolderBase]: 31/251 cut-off events. [2023-08-03 16:04:08,904 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:04:08,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 251 events. 31/251 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 762 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-03 16:04:08,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 151 transitions, 320 flow [2023-08-03 16:04:08,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 151 transitions, 320 flow [2023-08-03 16:04:08,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:04:08,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 151 transitions, 320 flow [2023-08-03 16:04:08,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 151 transitions, 320 flow [2023-08-03 16:04:08,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 151 transitions, 320 flow [2023-08-03 16:04:08,929 INFO L124 PetriNetUnfolderBase]: 31/251 cut-off events. [2023-08-03 16:04:08,929 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:04:08,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 251 events. 31/251 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 762 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-03 16:04:08,936 INFO L119 LiptonReduction]: Number of co-enabled transitions 8580 [2023-08-03 16:04:11,907 INFO L134 LiptonReduction]: Checked pairs total: 17140 [2023-08-03 16:04:11,908 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 16:04:11,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:11,911 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;@7425325c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:11,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:04:11,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:11,913 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 16:04:11,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:11,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:11,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:04:11,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:11,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:11,914 INFO L85 PathProgramCache]: Analyzing trace with hash 22884652, now seen corresponding path program 1 times [2023-08-03 16:04:11,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:11,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030519049] [2023-08-03 16:04:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:11,981 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 16:04:11,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:11,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030519049] [2023-08-03 16:04:11,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030519049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:11,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:11,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:04:11,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031227627] [2023-08-03 16:04:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:11,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:11,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:11,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-03 16:04:11,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 16:04:11,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:11,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-03 16:04:11,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:12,328 INFO L124 PetriNetUnfolderBase]: 1833/3121 cut-off events. [2023-08-03 16:04:12,329 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-03 16:04:12,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6169 conditions, 3121 events. 1833/3121 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17197 event pairs, 1704 based on Foata normal form. 450/3232 useless extension candidates. Maximal degree in co-relation 4454. Up to 2974 conditions per place. [2023-08-03 16:04:12,339 INFO L140 encePairwiseOnDemand]: 250/267 looper letters, 34 selfloop transitions, 2 changer transitions 9/52 dead transitions. [2023-08-03 16:04:12,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 210 flow [2023-08-03 16:04:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-03 16:04:12,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493133583021224 [2023-08-03 16:04:12,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-03 16:04:12,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-03 16:04:12,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:12,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-03 16:04:12,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 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 16:04:12,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 16:04:12,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 16:04:12,350 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 128 flow. Second operand 3 states and 440 transitions. [2023-08-03 16:04:12,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 210 flow [2023-08-03 16:04:12,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:12,354 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 88 flow [2023-08-03 16:04:12,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-08-03 16:04:12,355 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-03 16:04:12,355 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 88 flow [2023-08-03 16:04:12,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 16:04:12,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:12,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:12,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:04:12,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:12,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash 227994661, now seen corresponding path program 1 times [2023-08-03 16:04:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:12,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115405434] [2023-08-03 16:04:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:12,439 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 16:04:12,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:12,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115405434] [2023-08-03 16:04:12,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115405434] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:12,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607013896] [2023-08-03 16:04:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:12,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:12,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:12,447 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 16:04:12,455 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 16:04:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:12,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:04:12,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:12,585 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 16:04:12,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:12,599 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 16:04:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607013896] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:12,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:12,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:04:12,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593097639] [2023-08-03 16:04:12,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:12,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:12,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:12,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:12,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:12,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 16:04:12,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 16:04:12,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:12,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 16:04:12,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:12,787 INFO L124 PetriNetUnfolderBase]: 904/1559 cut-off events. [2023-08-03 16:04:12,787 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-03 16:04:12,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 1559 events. 904/1559 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8119 event pairs, 80 based on Foata normal form. 10/1568 useless extension candidates. Maximal degree in co-relation 335. Up to 1005 conditions per place. [2023-08-03 16:04:12,795 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 50 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-03 16:04:12,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 252 flow [2023-08-03 16:04:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2023-08-03 16:04:12,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159176029962547 [2023-08-03 16:04:12,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions. [2023-08-03 16:04:12,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions. [2023-08-03 16:04:12,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:12,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions. [2023-08-03 16:04:12,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 16:04:12,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states 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 16:04:12,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states 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 16:04:12,801 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 88 flow. Second operand 4 states and 551 transitions. [2023-08-03 16:04:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 252 flow [2023-08-03 16:04:12,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 248 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:12,803 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 104 flow [2023-08-03 16:04:12,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 16:04:12,804 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-03 16:04:12,804 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 104 flow [2023-08-03 16:04:12,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 16:04:12,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:12,805 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:04:12,816 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 16:04:13,016 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 16:04:13,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:13,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2027230249, now seen corresponding path program 1 times [2023-08-03 16:04:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139419742] [2023-08-03 16:04:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:13,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:13,104 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 16:04:13,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139419742] [2023-08-03 16:04:13,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139419742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34217935] [2023-08-03 16:04:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:13,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:13,106 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 16:04:13,109 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 16:04:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:13,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:04:13,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:13,205 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 16:04:13,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:04:13,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34217935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:13,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:04:13,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:04:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371358825] [2023-08-03 16:04:13,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:13,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:13,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:13,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:13,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 16:04:13,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 104 flow. Second operand has 5 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 16:04:13,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:13,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 16:04:13,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:13,390 INFO L124 PetriNetUnfolderBase]: 743/1244 cut-off events. [2023-08-03 16:04:13,390 INFO L125 PetriNetUnfolderBase]: For 632/632 co-relation queries the response was YES. [2023-08-03 16:04:13,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 1244 events. 743/1244 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6199 event pairs, 80 based on Foata normal form. 90/1331 useless extension candidates. Maximal degree in co-relation 2214. Up to 1004 conditions per place. [2023-08-03 16:04:13,398 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 50 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-03 16:04:13,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 256 flow [2023-08-03 16:04:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 674 transitions. [2023-08-03 16:04:13,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048689138576778 [2023-08-03 16:04:13,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 674 transitions. [2023-08-03 16:04:13,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 674 transitions. [2023-08-03 16:04:13,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:13,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 674 transitions. [2023-08-03 16:04:13,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states 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 16:04:13,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 16:04:13,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 16:04:13,406 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 104 flow. Second operand 5 states and 674 transitions. [2023-08-03 16:04:13,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 256 flow [2023-08-03 16:04:13,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 249 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:13,409 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 93 flow [2023-08-03 16:04:13,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-03 16:04:13,411 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-03 16:04:13,411 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 93 flow [2023-08-03 16:04:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 16:04:13,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:13,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:13,419 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 16:04:13,617 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 16:04:13,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:13,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1580377283, now seen corresponding path program 1 times [2023-08-03 16:04:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:13,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265539034] [2023-08-03 16:04:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:13,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:13,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265539034] [2023-08-03 16:04:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265539034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191376018] [2023-08-03 16:04:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:13,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:13,761 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 16:04:13,764 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 16:04:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:13,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-03 16:04:13,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:13,869 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-03 16:04:13,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 16:04:13,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 16:04:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:13,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:13,949 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_101 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_101) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|) 0)) is different from false [2023-08-03 16:04:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-03 16:04:13,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191376018] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:13,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:13,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 3 [2023-08-03 16:04:13,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25946731] [2023-08-03 16:04:13,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:13,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:13,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-08-03 16:04:14,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 267 [2023-08-03 16:04:14,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 16:04:14,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:14,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 267 [2023-08-03 16:04:14,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:14,181 INFO L124 PetriNetUnfolderBase]: 804/1387 cut-off events. [2023-08-03 16:04:14,181 INFO L125 PetriNetUnfolderBase]: For 969/969 co-relation queries the response was YES. [2023-08-03 16:04:14,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3193 conditions, 1387 events. 804/1387 cut-off events. For 969/969 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6687 event pairs, 324 based on Foata normal form. 12/1397 useless extension candidates. Maximal degree in co-relation 2398. Up to 1203 conditions per place. [2023-08-03 16:04:14,188 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 37 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-03 16:04:14,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 220 flow [2023-08-03 16:04:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-03 16:04:14,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970037453183521 [2023-08-03 16:04:14,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-03 16:04:14,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-03 16:04:14,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:14,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-03 16:04:14,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 16:04:14,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 16:04:14,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 16:04:14,194 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 93 flow. Second operand 3 states and 318 transitions. [2023-08-03 16:04:14,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 220 flow [2023-08-03 16:04:14,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:14,197 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 107 flow [2023-08-03 16:04:14,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 16:04:14,199 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-03 16:04:14,199 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 107 flow [2023-08-03 16:04:14,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 16:04:14,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:14,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:14,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:14,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:14,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:14,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2113900372, now seen corresponding path program 1 times [2023-08-03 16:04:14,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:14,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226992141] [2023-08-03 16:04:14,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:14,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:14,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:14,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226992141] [2023-08-03 16:04:14,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226992141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:14,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:14,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:04:14,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943168732] [2023-08-03 16:04:14,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:14,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:14,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:14,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:14,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:14,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-08-03 16:04:14,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 16:04:14,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:14,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-08-03 16:04:14,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:14,727 INFO L124 PetriNetUnfolderBase]: 389/811 cut-off events. [2023-08-03 16:04:14,727 INFO L125 PetriNetUnfolderBase]: For 625/625 co-relation queries the response was YES. [2023-08-03 16:04:14,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2136 conditions, 811 events. 389/811 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3929 event pairs, 155 based on Foata normal form. 157/967 useless extension candidates. Maximal degree in co-relation 1159. Up to 450 conditions per place. [2023-08-03 16:04:14,732 INFO L140 encePairwiseOnDemand]: 255/267 looper letters, 39 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-08-03 16:04:14,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 275 flow [2023-08-03 16:04:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-08-03 16:04:14,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756554307116105 [2023-08-03 16:04:14,734 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-08-03 16:04:14,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-08-03 16:04:14,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:14,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-08-03 16:04:14,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 16:04:14,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states 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 16:04:14,738 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states 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 16:04:14,738 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 107 flow. Second operand 4 states and 508 transitions. [2023-08-03 16:04:14,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 275 flow [2023-08-03 16:04:14,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:14,740 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 163 flow [2023-08-03 16:04:14,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-03 16:04:14,741 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-03 16:04:14,741 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 163 flow [2023-08-03 16:04:14,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 16:04:14,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:14,742 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:14,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:04:14,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:14,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:14,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1074609022, now seen corresponding path program 1 times [2023-08-03 16:04:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594374112] [2023-08-03 16:04:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:14,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:14,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:04:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:14,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:04:14,773 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:04:14,773 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:04:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:04:14,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:04:14,774 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 16:04:14,777 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:04:14,777 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:04:14,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:04:14 BasicIcfg [2023-08-03 16:04:14,826 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:04:14,826 INFO L158 Benchmark]: Toolchain (without parser) took 10645.27ms. Allocated memory was 350.2MB in the beginning and 650.1MB in the end (delta: 299.9MB). Free memory was 302.6MB in the beginning and 494.6MB in the end (delta: -192.0MB). Peak memory consumption was 109.6MB. Max. memory is 16.0GB. [2023-08-03 16:04:14,826 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory was 302.8MB in the beginning and 302.5MB in the end (delta: 258.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:14,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.71ms. Allocated memory is still 350.2MB. Free memory was 302.6MB in the beginning and 282.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:04:14,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.38ms. Allocated memory is still 350.2MB. Free memory was 282.6MB in the beginning and 280.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:04:14,827 INFO L158 Benchmark]: Boogie Preprocessor took 21.94ms. Allocated memory is still 350.2MB. Free memory was 280.5MB in the beginning and 278.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:04:14,827 INFO L158 Benchmark]: RCFGBuilder took 335.21ms. Allocated memory is still 350.2MB. Free memory was 278.8MB in the beginning and 263.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 16:04:14,827 INFO L158 Benchmark]: TraceAbstraction took 9821.54ms. Allocated memory was 350.2MB in the beginning and 650.1MB in the end (delta: 299.9MB). Free memory was 262.7MB in the beginning and 494.6MB in the end (delta: -231.9MB). Peak memory consumption was 69.8MB. Max. memory is 16.0GB. [2023-08-03 16:04:14,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory was 302.8MB in the beginning and 302.5MB in the end (delta: 258.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 421.71ms. Allocated memory is still 350.2MB. Free memory was 302.6MB in the beginning and 282.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.38ms. Allocated memory is still 350.2MB. Free memory was 282.6MB in the beginning and 280.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.94ms. Allocated memory is still 350.2MB. Free memory was 280.5MB in the beginning and 278.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 335.21ms. Allocated memory is still 350.2MB. Free memory was 278.8MB in the beginning and 263.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 9821.54ms. Allocated memory was 350.2MB in the beginning and 650.1MB in the end (delta: 299.9MB). Free memory was 262.7MB in the beginning and 494.6MB in the end (delta: -231.9MB). Peak memory consumption was 69.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 103 PlacesBefore, 27 PlacesAfterwards, 111 TransitionsBefore, 32 TransitionsAfterwards, 2838 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4947 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2669, independent: 2505, independent conditional: 0, independent unconditional: 2505, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1542, independent: 1503, independent conditional: 0, independent unconditional: 1503, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2669, independent: 1002, independent conditional: 0, independent unconditional: 1002, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 1542, unknown conditional: 0, unknown unconditional: 1542] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 137 PlacesBefore, 44 PlacesAfterwards, 151 TransitionsBefore, 55 TransitionsAfterwards, 8580 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 116 TotalNumberOfCompositions, 17140 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8062, independent: 7786, independent conditional: 0, independent unconditional: 7786, dependent: 276, dependent conditional: 0, dependent unconditional: 276, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4247, independent: 4193, independent conditional: 0, independent unconditional: 4193, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8062, independent: 3593, independent conditional: 0, independent unconditional: 3593, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 4247, unknown conditional: 0, unknown unconditional: 4247] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 208, Positive conditional cache size: 0, Positive unconditional cache size: 208, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t id[2]; [L708] 0 int i = 0; [L709] 0 int asdf=0; VAL [__global_lock={3:0}, asdf=0, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}] [L709] COND TRUE 0 asdf<2 [L709] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={7:0}, asdf=0, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, (void *) &i)=-2] [L709] 0 asdf++ VAL [__global_lock={3:0}, arg={7:0}, asdf=1, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}] [L709] COND TRUE 0 asdf<2 [L700] 1 int *p = (int *) arg; [L702] EXPR 1 \read(*p) VAL [\read(*p)=0, __global_lock={3:0}, arg={7:0}, arg={7:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}] [L702] 1 (*p)++ [L709] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={7:0}, arg={7:0}, asdf=1, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}, pthread_create(&id[asdf], ((void *)0), t_fun, (void *) &i)=-1] [L709] 0 asdf++ VAL [__global_lock={3:0}, arg={7:0}, arg={7:0}, asdf=2, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}, p={7:0}] [L709] COND FALSE 0 !(asdf<2) [L711] EXPR 0 \read(i) [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={7:0}, arg={7:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={7:0}] - UnprovableResult [Line: 709]: 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, 133 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: 3.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 44 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=69occurred in iteration=0, 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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, 161 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: 5.9s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 285 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 226 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 62 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 521 IncrementalHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 11 mSDtfsCounter, 521 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=5, InterpolantAutomatonStates: 19, 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, 0.6s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 5 QuantifiedInterpolants, 514 SizeOfPredicates, 1 NumberOfNonLiveVariables, 445 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 20/43 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 16:04:14,845 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...