/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_36-traces-ex-3_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:02:13,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:02:13,424 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:02:13,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:02:13,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:02:13,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:02:13,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:02:13,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:02:13,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:02:13,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:02:13,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:02:13,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:02:13,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:02:13,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:02:13,457 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:02:13,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:02:13,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:02:13,458 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:02:13,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:02:13,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:02:13,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:02:13,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:02:13,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:02:13,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:02:13,460 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:02:13,460 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:02:13,460 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:02:13,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:02:13,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:02:13,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:02:13,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:13,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:02:13,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:02:13,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:02:13,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:02:13,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:02:13,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:02:13,462 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:02:13,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:02:13,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:02:13,462 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:02:13,463 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:02:13,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:02:13,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:02:13,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:02:13,710 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:02:13,710 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:02:13,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_36-traces-ex-3_true_bound2.i [2023-08-03 16:02:14,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:02:14,838 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:02:14,839 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_36-traces-ex-3_true_bound2.i [2023-08-03 16:02:14,848 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d2b2bd9/2a26c6dda0144e00b4585ca8aa39f73d/FLAG4415f3798 [2023-08-03 16:02:14,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d2b2bd9/2a26c6dda0144e00b4585ca8aa39f73d [2023-08-03 16:02:14,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:02:14,862 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:02:14,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:14,864 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:02:14,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:02:14,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:14" (1/1) ... [2023-08-03 16:02:14,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5eef37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:14, skipping insertion in model container [2023-08-03 16:02:14,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:14" (1/1) ... [2023-08-03 16:02:14,906 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:02:15,000 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_36-traces-ex-3_true_bound2.i[1088,1101] [2023-08-03 16:02:15,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:15,095 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:02:15,107 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_36-traces-ex-3_true_bound2.i[1088,1101] [2023-08-03 16:02:15,129 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:02:15,131 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:02:15,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:15,163 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:02:15,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15 WrapperNode [2023-08-03 16:02:15,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:15,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:15,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:02:15,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:02:15,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,193 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-08-03 16:02:15,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:15,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:02:15,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:02:15,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:02:15,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:02:15,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:02:15,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:02:15,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:02:15,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (1/1) ... [2023-08-03 16:02:15,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:15,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:15,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:02:15,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:02:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:02:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:02:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:02:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:02:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:02:15,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:02:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:02:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:02:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:02:15,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:02:15,262 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:02:15,344 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:02:15,345 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:02:15,452 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:02:15,457 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:02:15,457 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:02:15,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:15 BoogieIcfgContainer [2023-08-03 16:02:15,458 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:02:15,460 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:02:15,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:02:15,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:02:15,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:02:14" (1/3) ... [2023-08-03 16:02:15,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3170a840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:15, skipping insertion in model container [2023-08-03 16:02:15,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:15" (2/3) ... [2023-08-03 16:02:15,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3170a840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:15, skipping insertion in model container [2023-08-03 16:02:15,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:15" (3/3) ... [2023-08-03 16:02:15,464 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_36-traces-ex-3_true_bound2.i [2023-08-03 16:02:15,469 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:02:15,476 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:02:15,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:02:15,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:02:15,507 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:15,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 69 transitions, 143 flow [2023-08-03 16:02:15,597 INFO L124 PetriNetUnfolderBase]: 4/94 cut-off events. [2023-08-03 16:02:15,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:15,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-03 16:02:15,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 69 transitions, 143 flow [2023-08-03 16:02:15,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 125 flow [2023-08-03 16:02:15,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:15,612 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 125 flow [2023-08-03 16:02:15,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 125 flow [2023-08-03 16:02:15,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 125 flow [2023-08-03 16:02:15,627 INFO L124 PetriNetUnfolderBase]: 2/76 cut-off events. [2023-08-03 16:02:15,628 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:15,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2023-08-03 16:02:15,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 484 [2023-08-03 16:02:17,134 INFO L134 LiptonReduction]: Checked pairs total: 1142 [2023-08-03 16:02:17,134 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-03 16:02:17,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:17,152 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;@675c50ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:17,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:02:17,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:17,155 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 16:02:17,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:17,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:17,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 16:02:17,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:17,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash 228443888, now seen corresponding path program 1 times [2023-08-03 16:02:17,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:17,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017936480] [2023-08-03 16:02:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:17,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:17,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:17,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017936480] [2023-08-03 16:02:17,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017936480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:17,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:17,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:17,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533891791] [2023-08-03 16:02:17,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:17,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:17,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:17,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 115 [2023-08-03 16:02:17,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:17,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:17,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 115 [2023-08-03 16:02:17,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:17,383 INFO L124 PetriNetUnfolderBase]: 20/64 cut-off events. [2023-08-03 16:02:17,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:17,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 64 events. 20/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 205 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 105. Up to 46 conditions per place. [2023-08-03 16:02:17,385 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 14 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-03 16:02:17,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 77 flow [2023-08-03 16:02:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2023-08-03 16:02:17,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2023-08-03 16:02:17,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 200 transitions. [2023-08-03 16:02:17,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 200 transitions. [2023-08-03 16:02:17,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:17,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 200 transitions. [2023-08-03 16:02:17,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:17,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:17,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:17,405 INFO L175 Difference]: Start difference. First operand has 18 places, 15 transitions, 35 flow. Second operand 3 states and 200 transitions. [2023-08-03 16:02:17,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 77 flow [2023-08-03 16:02:17,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 77 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:17,408 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 43 flow [2023-08-03 16:02:17,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=43, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-03 16:02:17,411 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-08-03 16:02:17,411 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 43 flow [2023-08-03 16:02:17,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:17,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:17,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:02:17,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:02:17,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:17,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1500518792, now seen corresponding path program 1 times [2023-08-03 16:02:17,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:17,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379395809] [2023-08-03 16:02:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:17,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:17,432 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:02:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:17,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:02:17,458 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:02:17,459 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:02:17,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:02:17,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:02:17,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:02:17,462 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:02:17,462 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:02:17,471 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:17,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 81 transitions, 174 flow [2023-08-03 16:02:17,487 INFO L124 PetriNetUnfolderBase]: 6/136 cut-off events. [2023-08-03 16:02:17,487 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:17,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 136 events. 6/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 262 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 95. Up to 6 conditions per place. [2023-08-03 16:02:17,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 81 transitions, 174 flow [2023-08-03 16:02:17,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 72 transitions, 156 flow [2023-08-03 16:02:17,489 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:17,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 72 transitions, 156 flow [2023-08-03 16:02:17,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 72 transitions, 156 flow [2023-08-03 16:02:17,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 156 flow [2023-08-03 16:02:17,500 INFO L124 PetriNetUnfolderBase]: 3/109 cut-off events. [2023-08-03 16:02:17,500 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:17,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 3/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2023-08-03 16:02:17,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 1232 [2023-08-03 16:02:18,917 INFO L134 LiptonReduction]: Checked pairs total: 3532 [2023-08-03 16:02:18,918 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-03 16:02:18,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:18,924 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;@675c50ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:18,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:02:18,928 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:18,928 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 16:02:18,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:18,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:18,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 16:02:18,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:18,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash 364909006, now seen corresponding path program 1 times [2023-08-03 16:02:18,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:18,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760877483] [2023-08-03 16:02:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:18,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:19,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760877483] [2023-08-03 16:02:19,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760877483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:19,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:19,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:19,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452359939] [2023-08-03 16:02:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:19,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:19,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:19,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 131 [2023-08-03 16:02:19,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:19,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 131 [2023-08-03 16:02:19,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:19,104 INFO L124 PetriNetUnfolderBase]: 240/505 cut-off events. [2023-08-03 16:02:19,104 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 16:02:19,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 505 events. 240/505 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2558 event pairs, 100 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 173. Up to 416 conditions per place. [2023-08-03 16:02:19,110 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 20 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 16:02:19,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 114 flow [2023-08-03 16:02:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-03 16:02:19,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6081424936386769 [2023-08-03 16:02:19,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-03 16:02:19,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-03 16:02:19,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:19,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-03 16:02:19,119 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 16:02:19,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,121 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 58 flow. Second operand 3 states and 239 transitions. [2023-08-03 16:02:19,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 114 flow [2023-08-03 16:02:19,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:19,123 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 68 flow [2023-08-03 16:02:19,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-03 16:02:19,124 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-03 16:02:19,124 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 68 flow [2023-08-03 16:02:19,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:19,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:19,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:02:19,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:19,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash -158298853, now seen corresponding path program 1 times [2023-08-03 16:02:19,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:19,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705413044] [2023-08-03 16:02:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:19,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:19,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:19,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705413044] [2023-08-03 16:02:19,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705413044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:19,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485190295] [2023-08-03 16:02:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:19,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:19,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:19,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:02:19,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:02:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:19,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:02:19,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:19,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:02:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:19,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485190295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:02:19,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:02:19,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:02:19,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656708291] [2023-08-03 16:02:19,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:02:19,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:19,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:19,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 131 [2023-08-03 16:02:19,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:19,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 131 [2023-08-03 16:02:19,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:19,408 INFO L124 PetriNetUnfolderBase]: 228/453 cut-off events. [2023-08-03 16:02:19,408 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-03 16:02:19,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 937 conditions, 453 events. 228/453 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2190 event pairs, 20 based on Foata normal form. 5/457 useless extension candidates. Maximal degree in co-relation 192. Up to 261 conditions per place. [2023-08-03 16:02:19,410 INFO L140 encePairwiseOnDemand]: 127/131 looper letters, 27 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2023-08-03 16:02:19,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 158 flow [2023-08-03 16:02:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-08-03 16:02:19,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6030534351145038 [2023-08-03 16:02:19,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-08-03 16:02:19,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-08-03 16:02:19,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:19,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-08-03 16:02:19,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,414 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,414 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 68 flow. Second operand 4 states and 316 transitions. [2023-08-03 16:02:19,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 158 flow [2023-08-03 16:02:19,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:02:19,415 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 86 flow [2023-08-03 16:02:19,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-03 16:02:19,416 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-08-03 16:02:19,416 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 86 flow [2023-08-03 16:02:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:19,416 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:02:19,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:02:19,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:19,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:19,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1542215056, now seen corresponding path program 1 times [2023-08-03 16:02:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:19,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881127559] [2023-08-03 16:02:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:19,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:19,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881127559] [2023-08-03 16:02:19,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881127559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:19,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464823609] [2023-08-03 16:02:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:19,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:19,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:19,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:02:19,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:02:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:19,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:02:19,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:19,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:02:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464823609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:19,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:02:19,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:02:19,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700651741] [2023-08-03 16:02:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:19,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:19,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:19,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:19,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:02:19,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 131 [2023-08-03 16:02:19,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:19,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 131 [2023-08-03 16:02:19,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:19,862 INFO L124 PetriNetUnfolderBase]: 188/373 cut-off events. [2023-08-03 16:02:19,862 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-08-03 16:02:19,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 373 events. 188/373 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1684 event pairs, 0 based on Foata normal form. 25/397 useless extension candidates. Maximal degree in co-relation 164. Up to 260 conditions per place. [2023-08-03 16:02:19,863 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 27 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-03 16:02:19,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 164 flow [2023-08-03 16:02:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:02:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:02:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-03 16:02:19,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5893129770992367 [2023-08-03 16:02:19,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-03 16:02:19,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-03 16:02:19,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:19,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-03 16:02:19,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,866 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 86 flow. Second operand 5 states and 386 transitions. [2023-08-03 16:02:19,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 164 flow [2023-08-03 16:02:19,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 157 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:19,868 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 75 flow [2023-08-03 16:02:19,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-03 16:02:19,868 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-08-03 16:02:19,868 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 75 flow [2023-08-03 16:02:19,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:19,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:19,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:19,890 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 16:02:20,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:20,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:20,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:20,093 INFO L85 PathProgramCache]: Analyzing trace with hash -305212119, now seen corresponding path program 1 times [2023-08-03 16:02:20,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:20,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5029286] [2023-08-03 16:02:20,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:20,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:20,138 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 16:02:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:20,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5029286] [2023-08-03 16:02:20,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5029286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:20,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:20,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:02:20,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025931236] [2023-08-03 16:02:20,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:20,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:20,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 131 [2023-08-03 16:02:20,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:20,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 131 [2023-08-03 16:02:20,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:20,207 INFO L124 PetriNetUnfolderBase]: 304/605 cut-off events. [2023-08-03 16:02:20,208 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2023-08-03 16:02:20,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 605 events. 304/605 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3054 event pairs, 148 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 780. Up to 292 conditions per place. [2023-08-03 16:02:20,209 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 30 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-08-03 16:02:20,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 198 flow [2023-08-03 16:02:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-03 16:02:20,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.628498727735369 [2023-08-03 16:02:20,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-03 16:02:20,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-03 16:02:20,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:20,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-03 16:02:20,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,212 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 75 flow. Second operand 3 states and 247 transitions. [2023-08-03 16:02:20,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 198 flow [2023-08-03 16:02:20,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 190 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:20,213 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 108 flow [2023-08-03 16:02:20,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-03 16:02:20,214 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2023-08-03 16:02:20,214 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 108 flow [2023-08-03 16:02:20,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:20,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:20,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:02:20,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:20,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1686650200, now seen corresponding path program 1 times [2023-08-03 16:02:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:20,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296142685] [2023-08-03 16:02:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:20,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:02:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296142685] [2023-08-03 16:02:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296142685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:20,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:02:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40906288] [2023-08-03 16:02:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:20,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:20,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:20,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:20,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 131 [2023-08-03 16:02:20,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:20,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 131 [2023-08-03 16:02:20,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:20,408 INFO L124 PetriNetUnfolderBase]: 67/183 cut-off events. [2023-08-03 16:02:20,408 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2023-08-03 16:02:20,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 183 events. 67/183 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 690 event pairs, 29 based on Foata normal form. 46/227 useless extension candidates. Maximal degree in co-relation 282. Up to 120 conditions per place. [2023-08-03 16:02:20,408 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-03 16:02:20,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 166 flow [2023-08-03 16:02:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 285 transitions. [2023-08-03 16:02:20,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5438931297709924 [2023-08-03 16:02:20,410 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 285 transitions. [2023-08-03 16:02:20,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 285 transitions. [2023-08-03 16:02:20,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:20,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 285 transitions. [2023-08-03 16:02:20,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,411 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 108 flow. Second operand 4 states and 285 transitions. [2023-08-03 16:02:20,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 166 flow [2023-08-03 16:02:20,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 16:02:20,412 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-08-03 16:02:20,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-08-03 16:02:20,413 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-03 16:02:20,413 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-08-03 16:02:20,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:20,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:02:20,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:02:20,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:02:20,414 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 16:02:20,415 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:02:20,415 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:02:20,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:02:20 BasicIcfg [2023-08-03 16:02:20,417 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:02:20,418 INFO L158 Benchmark]: Toolchain (without parser) took 5556.00ms. Allocated memory was 375.4MB in the beginning and 580.9MB in the end (delta: 205.5MB). Free memory was 329.7MB in the beginning and 235.6MB in the end (delta: 94.1MB). Peak memory consumption was 301.4MB. Max. memory is 16.0GB. [2023-08-03 16:02:20,418 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 375.4MB. Free memory is still 331.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:20,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.73ms. Allocated memory is still 375.4MB. Free memory was 329.4MB in the beginning and 310.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:02:20,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.58ms. Allocated memory is still 375.4MB. Free memory was 310.5MB in the beginning and 308.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:02:20,418 INFO L158 Benchmark]: Boogie Preprocessor took 15.90ms. Allocated memory is still 375.4MB. Free memory was 308.4MB in the beginning and 307.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:02:20,418 INFO L158 Benchmark]: RCFGBuilder took 247.57ms. Allocated memory is still 375.4MB. Free memory was 307.0MB in the beginning and 294.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 16:02:20,419 INFO L158 Benchmark]: TraceAbstraction took 4957.76ms. Allocated memory was 375.4MB in the beginning and 580.9MB in the end (delta: 205.5MB). Free memory was 293.7MB in the beginning and 235.6MB in the end (delta: 58.1MB). Peak memory consumption was 265.7MB. Max. memory is 16.0GB. [2023-08-03 16:02:20,419 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 375.4MB. Free memory is still 331.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 299.73ms. Allocated memory is still 375.4MB. Free memory was 329.4MB in the beginning and 310.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.58ms. Allocated memory is still 375.4MB. Free memory was 310.5MB in the beginning and 308.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.90ms. Allocated memory is still 375.4MB. Free memory was 308.4MB in the beginning and 307.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 247.57ms. Allocated memory is still 375.4MB. Free memory was 307.0MB in the beginning and 294.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4957.76ms. Allocated memory was 375.4MB in the beginning and 580.9MB in the end (delta: 205.5MB). Free memory was 293.7MB in the beginning and 235.6MB in the end (delta: 58.1MB). Peak memory consumption was 265.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 62 PlacesBefore, 18 PlacesAfterwards, 60 TransitionsBefore, 15 TransitionsAfterwards, 484 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1142 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 726, independent: 622, independent conditional: 0, independent unconditional: 622, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 253, independent: 236, independent conditional: 0, independent unconditional: 236, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 726, independent: 386, independent conditional: 0, independent unconditional: 386, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 253, unknown conditional: 0, unknown unconditional: 253] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 76 PlacesBefore, 28 PlacesAfterwards, 72 TransitionsBefore, 23 TransitionsAfterwards, 1232 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 50 TotalNumberOfCompositions, 3532 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1161, independent: 991, independent conditional: 0, independent unconditional: 991, dependent: 170, dependent conditional: 0, dependent unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 554, independent: 523, independent conditional: 0, independent unconditional: 523, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1161, independent: 468, independent conditional: 0, independent unconditional: 468, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 554, unknown conditional: 0, unknown unconditional: 554] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 80 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 92 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 193 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 321 IncrementalHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 16 mSDtfsCounter, 321 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 245 SizeOfPredicates, 0 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 23/31 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:02:20,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...