/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_11-traces-max-simple_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:10:12,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:10:12,234 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:10:12,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:10:12,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:10:12,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:10:12,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:10:12,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:10:12,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:10:12,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:10:12,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:10:12,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:10:12,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:10:12,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:10:12,269 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:10:12,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:10:12,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:10:12,270 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:10:12,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:10:12,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:10:12,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:10:12,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:10:12,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:10:12,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:10:12,273 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:10:12,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:10:12,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:10:12,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:10:12,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:10:12,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:10:12,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:10:12,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:10:12,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:10:12,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:10:12,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:10:12,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:10:12,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:10:12,276 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:10:12,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:10:12,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:10:12,276 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:10:12,280 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:10:12,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:10:12,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:10:12,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:10:12,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:10:12,467 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:10:12,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_11-traces-max-simple_true_bound2.i [2023-08-03 22:10:13,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:10:13,532 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:10:13,532 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_11-traces-max-simple_true_bound2.i [2023-08-03 22:10:13,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0e68032/1fd7f0abae03403a8d7f2cbf8a8c1501/FLAG05ec76c58 [2023-08-03 22:10:13,554 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0e68032/1fd7f0abae03403a8d7f2cbf8a8c1501 [2023-08-03 22:10:13,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:10:13,560 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:10:13,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:10:13,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:10:13,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:10:13,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:13,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72229289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13, skipping insertion in model container [2023-08-03 22:10:13,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:13,600 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:10:13,730 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_36-apron_11-traces-max-simple_true_bound2.i[1089,1102] [2023-08-03 22:10:13,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:10:13,866 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:10:13,875 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_36-apron_11-traces-max-simple_true_bound2.i[1089,1102] [2023-08-03 22:10:13,892 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 22:10:13,893 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 22:10:13,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:10:13,931 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:10:13,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13 WrapperNode [2023-08-03 22:10:13,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:10:13,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:10:13,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:10:13,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:10:13,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:13,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:13,974 INFO L138 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-08-03 22:10:13,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:10:13,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:10:13,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:10:13,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:10:13,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:13,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:13,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:13,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:13,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:14,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:14,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:14,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:14,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:10:14,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:10:14,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:10:14,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:10:14,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (1/1) ... [2023-08-03 22:10:14,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:10:14,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:10:14,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 22:10:14,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 22:10:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:10:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:10:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:10:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:10:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 22:10:14,077 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 22:10:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:10:14,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:10:14,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:10:14,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:10:14,079 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 22:10:14,192 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:10:14,193 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:10:14,323 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:10:14,327 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:10:14,327 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 22:10:14,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:10:14 BoogieIcfgContainer [2023-08-03 22:10:14,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:10:14,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:10:14,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:10:14,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:10:14,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:10:13" (1/3) ... [2023-08-03 22:10:14,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e25495e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:10:14, skipping insertion in model container [2023-08-03 22:10:14,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:13" (2/3) ... [2023-08-03 22:10:14,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e25495e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:10:14, skipping insertion in model container [2023-08-03 22:10:14,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:10:14" (3/3) ... [2023-08-03 22:10:14,334 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_36-apron_11-traces-max-simple_true_bound2.i [2023-08-03 22:10:14,339 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:10:14,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:10:14,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 22:10:14,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:10:14,371 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 22:10:14,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 67 transitions, 139 flow [2023-08-03 22:10:14,418 INFO L124 PetriNetUnfolderBase]: 5/91 cut-off events. [2023-08-03 22:10:14,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:14,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 5/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2023-08-03 22:10:14,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 67 transitions, 139 flow [2023-08-03 22:10:14,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 67 transitions, 139 flow [2023-08-03 22:10:14,429 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:14,438 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 67 transitions, 139 flow [2023-08-03 22:10:14,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 67 transitions, 139 flow [2023-08-03 22:10:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 67 transitions, 139 flow [2023-08-03 22:10:14,475 INFO L124 PetriNetUnfolderBase]: 5/91 cut-off events. [2023-08-03 22:10:14,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:14,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 5/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2023-08-03 22:10:14,481 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2023-08-03 22:10:15,803 INFO L134 LiptonReduction]: Checked pairs total: 1287 [2023-08-03 22:10:15,804 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-03 22:10:15,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:10:15,816 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e953239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:15,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:10:15,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:15,820 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-08-03 22:10:15,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:15,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:15,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:10:15,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:10:15,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:15,823 INFO L85 PathProgramCache]: Analyzing trace with hash -742136523, now seen corresponding path program 1 times [2023-08-03 22:10:15,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:15,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237545692] [2023-08-03 22:10:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:15,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:10:15,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:10:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:10:15,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:10:15,919 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:10:15,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:10:15,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:10:15,921 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:10:15,925 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 22:10:15,925 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:10:15,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:10:15,938 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 22:10:15,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:15,959 INFO L124 PetriNetUnfolderBase]: 8/136 cut-off events. [2023-08-03 22:10:15,960 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:15,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 136 events. 8/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 288 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-03 22:10:15,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:15,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:15,961 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:15,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:15,962 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:15,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:15,973 INFO L124 PetriNetUnfolderBase]: 8/136 cut-off events. [2023-08-03 22:10:15,973 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:15,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 136 events. 8/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 288 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-03 22:10:15,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 2280 [2023-08-03 22:10:17,204 INFO L134 LiptonReduction]: Checked pairs total: 5319 [2023-08-03 22:10:17,204 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-03 22:10:17,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:10:17,207 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;@4e953239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:17,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:10:17,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:17,215 INFO L124 PetriNetUnfolderBase]: 4/41 cut-off events. [2023-08-03 22:10:17,215 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:17,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:17,215 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:10:17,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:10:17,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -692745702, now seen corresponding path program 1 times [2023-08-03 22:10:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3515319] [2023-08-03 22:10:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:17,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:17,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3515319] [2023-08-03 22:10:17,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3515319] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:10:17,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868285461] [2023-08-03 22:10:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:17,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:10:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:10:17,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:10:17,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 22:10:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:17,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:10:17,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:10:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:17,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:10:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868285461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:17,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:10:17,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 22:10:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039740599] [2023-08-03 22:10:17,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:17,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:10:17,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:17,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:10:17,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:10:17,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 162 [2023-08-03 22:10:17,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:17,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:17,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 162 [2023-08-03 22:10:17,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:17,606 INFO L124 PetriNetUnfolderBase]: 504/869 cut-off events. [2023-08-03 22:10:17,606 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 22:10:17,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 869 events. 504/869 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4239 event pairs, 0 based on Foata normal form. 50/712 useless extension candidates. Maximal degree in co-relation 395. Up to 748 conditions per place. [2023-08-03 22:10:17,609 INFO L140 encePairwiseOnDemand]: 155/162 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-03 22:10:17,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 178 flow [2023-08-03 22:10:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:10:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:10:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-08-03 22:10:17,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-08-03 22:10:17,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-08-03 22:10:17,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-08-03 22:10:17,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:17,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-08-03 22:10:17,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:17,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:17,634 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:17,635 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 68 flow. Second operand 5 states and 396 transitions. [2023-08-03 22:10:17,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 178 flow [2023-08-03 22:10:17,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:10:17,639 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-03 22:10:17,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-03 22:10:17,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-08-03 22:10:17,648 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-03 22:10:17,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:17,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:10:17,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 22:10:17,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:10:17,855 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:10:17,856 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 22:10:17,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:17,869 INFO L124 PetriNetUnfolderBase]: 8/136 cut-off events. [2023-08-03 22:10:17,870 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:17,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 136 events. 8/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 288 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-03 22:10:17,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:17,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:17,873 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:17,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:17,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:17,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 178 flow [2023-08-03 22:10:17,881 INFO L124 PetriNetUnfolderBase]: 8/136 cut-off events. [2023-08-03 22:10:17,881 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:17,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 136 events. 8/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 288 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-03 22:10:17,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 2280 [2023-08-03 22:10:19,089 INFO L134 LiptonReduction]: Checked pairs total: 4661 [2023-08-03 22:10:19,089 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-03 22:10:19,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:10:19,091 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e953239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:19,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 22:10:19,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:19,092 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 22:10:19,092 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:19,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:19,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 22:10:19,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 22:10:19,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:19,093 INFO L85 PathProgramCache]: Analyzing trace with hash 16030584, now seen corresponding path program 1 times [2023-08-03 22:10:19,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:19,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574339361] [2023-08-03 22:10:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:19,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:19,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:19,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574339361] [2023-08-03 22:10:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574339361] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:19,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:10:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320130959] [2023-08-03 22:10:19,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:19,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:10:19,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:10:19,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:10:19,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 161 [2023-08-03 22:10:19,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:19,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 161 [2023-08-03 22:10:19,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:19,201 INFO L124 PetriNetUnfolderBase]: 485/836 cut-off events. [2023-08-03 22:10:19,201 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 22:10:19,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 836 events. 485/836 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3662 event pairs, 210 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 357. Up to 816 conditions per place. [2023-08-03 22:10:19,204 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 25 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 22:10:19,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 124 flow [2023-08-03 22:10:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:10:19,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:10:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-03 22:10:19,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494824016563147 [2023-08-03 22:10:19,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-03 22:10:19,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-03 22:10:19,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:19,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-03 22:10:19,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,207 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 60 flow. Second operand 3 states and 239 transitions. [2023-08-03 22:10:19,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 124 flow [2023-08-03 22:10:19,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 122 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 22:10:19,208 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 66 flow [2023-08-03 22:10:19,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-03 22:10:19,209 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-03 22:10:19,209 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 66 flow [2023-08-03 22:10:19,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:19,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 22:10:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 22:10:19,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 22:10:19,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1764247890, now seen corresponding path program 1 times [2023-08-03 22:10:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:19,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90223786] [2023-08-03 22:10:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:19,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90223786] [2023-08-03 22:10:19,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90223786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:19,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:10:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724156670] [2023-08-03 22:10:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:19,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:10:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:10:19,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:10:19,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 161 [2023-08-03 22:10:19,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:19,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 161 [2023-08-03 22:10:19,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:19,367 INFO L124 PetriNetUnfolderBase]: 328/575 cut-off events. [2023-08-03 22:10:19,367 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-03 22:10:19,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 575 events. 328/575 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2386 event pairs, 85 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 1192. Up to 483 conditions per place. [2023-08-03 22:10:19,369 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 26 selfloop transitions, 2 changer transitions 5/34 dead transitions. [2023-08-03 22:10:19,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 164 flow [2023-08-03 22:10:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:10:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:10:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-03 22:10:19,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2023-08-03 22:10:19,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-03 22:10:19,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-03 22:10:19,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:19,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-03 22:10:19,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,372 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 66 flow. Second operand 3 states and 245 transitions. [2023-08-03 22:10:19,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 164 flow [2023-08-03 22:10:19,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:10:19,376 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 66 flow [2023-08-03 22:10:19,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-08-03 22:10:19,377 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-03 22:10:19,378 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 66 flow [2023-08-03 22:10:19,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:19,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:19,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 22:10:19,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 22:10:19,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 906749243, now seen corresponding path program 1 times [2023-08-03 22:10:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:19,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054594298] [2023-08-03 22:10:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:19,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:19,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054594298] [2023-08-03 22:10:19,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054594298] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:10:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403639715] [2023-08-03 22:10:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:19,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:10:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:10:19,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:10:19,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 22:10:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:19,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 22:10:19,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:10:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:19,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:10:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:19,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403639715] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:10:19,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:10:19,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 22:10:19,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465829399] [2023-08-03 22:10:19,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:10:19,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:10:19,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:10:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:10:19,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 161 [2023-08-03 22:10:19,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:19,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 161 [2023-08-03 22:10:19,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:19,554 INFO L124 PetriNetUnfolderBase]: 228/401 cut-off events. [2023-08-03 22:10:19,554 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-08-03 22:10:19,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 401 events. 228/401 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1476 event pairs, 20 based on Foata normal form. 5/406 useless extension candidates. Maximal degree in co-relation 508. Up to 261 conditions per place. [2023-08-03 22:10:19,555 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 31 selfloop transitions, 3 changer transitions 1/36 dead transitions. [2023-08-03 22:10:19,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 181 flow [2023-08-03 22:10:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:10:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:10:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-08-03 22:10:19,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2023-08-03 22:10:19,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-08-03 22:10:19,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-08-03 22:10:19,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:19,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-08-03 22:10:19,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,558 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 66 flow. Second operand 4 states and 308 transitions. [2023-08-03 22:10:19,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 181 flow [2023-08-03 22:10:19,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 181 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:10:19,559 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 80 flow [2023-08-03 22:10:19,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-03 22:10:19,560 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-03 22:10:19,560 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 80 flow [2023-08-03 22:10:19,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:19,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:19,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 22:10:19,765 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 22:10:19,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 22:10:19,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash 415723037, now seen corresponding path program 1 times [2023-08-03 22:10:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:19,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231358224] [2023-08-03 22:10:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:19,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:10:19,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231358224] [2023-08-03 22:10:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231358224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:19,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:19,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:10:19,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144282904] [2023-08-03 22:10:19,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:19,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:10:19,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:19,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:10:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:10:19,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 161 [2023-08-03 22:10:19,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:19,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 161 [2023-08-03 22:10:19,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:19,862 INFO L124 PetriNetUnfolderBase]: 191/355 cut-off events. [2023-08-03 22:10:19,862 INFO L125 PetriNetUnfolderBase]: For 298/298 co-relation queries the response was YES. [2023-08-03 22:10:19,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 355 events. 191/355 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1346 event pairs, 137 based on Foata normal form. 25/380 useless extension candidates. Maximal degree in co-relation 440. Up to 296 conditions per place. [2023-08-03 22:10:19,864 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 24 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2023-08-03 22:10:19,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 168 flow [2023-08-03 22:10:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:10:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:10:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-03 22:10:19,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474120082815735 [2023-08-03 22:10:19,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-03 22:10:19,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-03 22:10:19,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:19,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-03 22:10:19,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,866 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 80 flow. Second operand 3 states and 229 transitions. [2023-08-03 22:10:19,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 168 flow [2023-08-03 22:10:19,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 161 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 22:10:19,868 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 116 flow [2023-08-03 22:10:19,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-03 22:10:19,870 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-03 22:10:19,870 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 116 flow [2023-08-03 22:10:19,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:19,870 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:19,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:10:19,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 22:10:19,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:19,870 INFO L85 PathProgramCache]: Analyzing trace with hash 932215573, now seen corresponding path program 1 times [2023-08-03 22:10:19,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:19,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359792223] [2023-08-03 22:10:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:19,938 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 22:10:19,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:19,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359792223] [2023-08-03 22:10:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359792223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:19,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:10:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904732678] [2023-08-03 22:10:19,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:19,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:10:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:10:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:10:19,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 161 [2023-08-03 22:10:19,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:19,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 161 [2023-08-03 22:10:19,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:19,972 INFO L124 PetriNetUnfolderBase]: 29/89 cut-off events. [2023-08-03 22:10:19,972 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 22:10:19,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 89 events. 29/89 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 6 based on Foata normal form. 32/121 useless extension candidates. Maximal degree in co-relation 255. Up to 62 conditions per place. [2023-08-03 22:10:19,973 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-03 22:10:19,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 147 flow [2023-08-03 22:10:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:10:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:10:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2023-08-03 22:10:19,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45962732919254656 [2023-08-03 22:10:19,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2023-08-03 22:10:19,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2023-08-03 22:10:19,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:19,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2023-08-03 22:10:19,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,976 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 116 flow. Second operand 3 states and 222 transitions. [2023-08-03 22:10:19,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 147 flow [2023-08-03 22:10:19,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 137 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-03 22:10:19,978 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-03 22:10:19,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-03 22:10:19,978 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-03 22:10:19,979 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-03 22:10:19,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:19,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 22:10:19,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 22:10:19,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 22:10:19,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 22:10:19,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 22:10:19,979 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 22:10:19,980 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-03 22:10:19,981 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:10:19,981 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:10:19,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:10:19 BasicIcfg [2023-08-03 22:10:19,985 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:10:19,985 INFO L158 Benchmark]: Toolchain (without parser) took 6425.20ms. Allocated memory was 356.5MB in the beginning and 505.4MB in the end (delta: 148.9MB). Free memory was 300.8MB in the beginning and 262.5MB in the end (delta: 38.3MB). Peak memory consumption was 188.5MB. Max. memory is 16.0GB. [2023-08-03 22:10:19,985 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 356.5MB. Free memory is still 309.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:10:19,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.17ms. Allocated memory is still 356.5MB. Free memory was 300.5MB in the beginning and 281.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 22:10:19,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.17ms. Allocated memory is still 356.5MB. Free memory was 281.6MB in the beginning and 279.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:10:19,986 INFO L158 Benchmark]: Boogie Preprocessor took 39.92ms. Allocated memory is still 356.5MB. Free memory was 279.5MB in the beginning and 278.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:10:19,986 INFO L158 Benchmark]: RCFGBuilder took 313.99ms. Allocated memory was 356.5MB in the beginning and 505.4MB in the end (delta: 148.9MB). Free memory was 278.0MB in the beginning and 467.1MB in the end (delta: -189.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.0GB. [2023-08-03 22:10:19,986 INFO L158 Benchmark]: TraceAbstraction took 5654.44ms. Allocated memory is still 505.4MB. Free memory was 467.1MB in the beginning and 262.5MB in the end (delta: 204.7MB). Peak memory consumption was 204.4MB. Max. memory is 16.0GB. [2023-08-03 22:10:19,988 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 356.5MB. Free memory is still 309.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 370.17ms. Allocated memory is still 356.5MB. Free memory was 300.5MB in the beginning and 281.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.17ms. Allocated memory is still 356.5MB. Free memory was 281.6MB in the beginning and 279.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.92ms. Allocated memory is still 356.5MB. Free memory was 279.5MB in the beginning and 278.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 313.99ms. Allocated memory was 356.5MB in the beginning and 505.4MB in the end (delta: 148.9MB). Free memory was 278.0MB in the beginning and 467.1MB in the end (delta: -189.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.0GB. * TraceAbstraction took 5654.44ms. Allocated memory is still 505.4MB. Free memory was 467.1MB in the beginning and 262.5MB in the end (delta: 204.7MB). Peak memory consumption was 204.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 67 PlacesBefore, 18 PlacesAfterwards, 67 TransitionsBefore, 16 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, 1287 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 919, independent: 852, independent conditional: 0, independent unconditional: 852, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 518, independent: 495, independent conditional: 0, independent unconditional: 495, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 919, independent: 357, independent conditional: 0, independent unconditional: 357, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 518, unknown conditional: 0, unknown unconditional: 518] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 84 PlacesBefore, 30 PlacesAfterwards, 83 TransitionsBefore, 28 TransitionsAfterwards, 2280 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 1 ChoiceCompositions, 79 TotalNumberOfCompositions, 5319 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3278, independent: 3106, independent conditional: 0, independent unconditional: 3106, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1311, independent: 1272, independent conditional: 0, independent unconditional: 1272, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3278, independent: 1834, independent conditional: 0, independent unconditional: 1834, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 1311, unknown conditional: 0, unknown unconditional: 1311] , Statistics on independence cache: Total cache size (in pairs): 141, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 84 PlacesBefore, 28 PlacesAfterwards, 83 TransitionsBefore, 24 TransitionsAfterwards, 2280 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 78 TotalNumberOfCompositions, 4661 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2660, independent: 2505, independent conditional: 0, independent unconditional: 2505, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1231, independent: 1199, independent conditional: 0, independent unconditional: 1199, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2660, independent: 1306, independent conditional: 0, independent unconditional: 1306, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 1231, unknown conditional: 0, unknown unconditional: 1231] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 80 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 268 IncrementalHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 25 mSDtfsCounter, 268 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=4, InterpolantAutomatonStates: 16, 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, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 22:10:20,015 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...