/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_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:04:18,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:04:18,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:04:18,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:04:18,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:04:18,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:04:18,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:04:18,313 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:04:18,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:04:18,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:04:18,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:04:18,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:04:18,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:04:18,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:04:18,320 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:04:18,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:04:18,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:04:18,320 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:04:18,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:04:18,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:04:18,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:04:18,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:04:18,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:04:18,322 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:04:18,323 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:04:18,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:04:18,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:04:18,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:04:18,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:04:18,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:04:18,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:04:18,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:04:18,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:04:18,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:04:18,326 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:04:18,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:04:18,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:04:18,327 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:04:18,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:04:18,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:04:18,327 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:04:18,333 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:04:18,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:04:18,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:04:18,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:04:18,584 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:04:18,584 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:04:18,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i [2023-08-03 16:04:19,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:04:19,965 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:04:19,965 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i [2023-08-03 16:04:19,986 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bccf64c1d/61e6532988a24ac3a38689bce1bb486c/FLAG27f4c19eb [2023-08-03 16:04:20,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bccf64c1d/61e6532988a24ac3a38689bce1bb486c [2023-08-03 16:04:20,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:04:20,007 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:04:20,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:04:20,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:04:20,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:04:20,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f236c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20, skipping insertion in model container [2023-08-03 16:04:20,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,060 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:04:20,205 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i[1098,1111] [2023-08-03 16:04:20,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:04:20,320 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:04:20,333 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i[1098,1111] [2023-08-03 16:04:20,353 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:04:20,355 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-03 16:04:20,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:04:20,420 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:04:20,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20 WrapperNode [2023-08-03 16:04:20,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:04:20,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:04:20,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:04:20,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:04:20,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,469 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2023-08-03 16:04:20,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:04:20,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:04:20,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:04:20,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:04:20,477 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:04:20,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:04:20,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:04:20,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:04:20,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (1/1) ... [2023-08-03 16:04:20,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:04:20,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:20,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:04:20,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:04:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:04:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:04:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:04:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:04:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:04:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:04:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:04:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:04:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:04:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:04:20,546 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:04:20,657 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:04:20,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:04:20,778 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:04:20,784 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:04:20,784 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:04:20,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:04:20 BoogieIcfgContainer [2023-08-03 16:04:20,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:04:20,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:04:20,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:04:20,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:04:20,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:04:20" (1/3) ... [2023-08-03 16:04:20,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1656e56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:04:20, skipping insertion in model container [2023-08-03 16:04:20,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:20" (2/3) ... [2023-08-03 16:04:20,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1656e56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:04:20, skipping insertion in model container [2023-08-03 16:04:20,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:04:20" (3/3) ... [2023-08-03 16:04:20,793 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_36-apron_17-traces-rpb-litmus_unknown_1_neg_bound2.i [2023-08-03 16:04:20,800 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:04:20,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:04:20,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:04:20,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:04:20,873 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:04:20,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 80 transitions, 165 flow [2023-08-03 16:04:20,980 INFO L124 PetriNetUnfolderBase]: 6/112 cut-off events. [2023-08-03 16:04:20,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:20,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 112 events. 6/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2023-08-03 16:04:20,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 80 transitions, 165 flow [2023-08-03 16:04:20,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 145 flow [2023-08-03 16:04:20,992 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:04:20,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 70 transitions, 145 flow [2023-08-03 16:04:21,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 70 transitions, 145 flow [2023-08-03 16:04:21,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 70 transitions, 145 flow [2023-08-03 16:04:21,039 INFO L124 PetriNetUnfolderBase]: 4/92 cut-off events. [2023-08-03 16:04:21,040 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:21,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 4/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2023-08-03 16:04:21,042 INFO L119 LiptonReduction]: Number of co-enabled transitions 560 [2023-08-03 16:04:23,410 INFO L134 LiptonReduction]: Checked pairs total: 1648 [2023-08-03 16:04:23,410 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-03 16:04:23,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:23,426 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;@7dd6ff4e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:23,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:04:23,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:23,428 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 16:04:23,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:23,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:23,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:04:23,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:23,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash 8498023, now seen corresponding path program 1 times [2023-08-03 16:04:23,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:23,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493612642] [2023-08-03 16:04:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:23,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:23,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:23,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493612642] [2023-08-03 16:04:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493612642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:23,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:23,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:04:23,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241000193] [2023-08-03 16:04:23,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:23,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:23,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:23,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:23,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 138 [2023-08-03 16:04:23,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 41 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 16:04:23,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:23,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 138 [2023-08-03 16:04:23,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:23,750 INFO L124 PetriNetUnfolderBase]: 25/74 cut-off events. [2023-08-03 16:04:23,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:23,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 74 events. 25/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 238 event pairs, 12 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 125. Up to 54 conditions per place. [2023-08-03 16:04:23,753 INFO L140 encePairwiseOnDemand]: 135/138 looper letters, 15 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-03 16:04:23,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 83 flow [2023-08-03 16:04:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2023-08-03 16:04:23,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2023-08-03 16:04:23,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2023-08-03 16:04:23,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2023-08-03 16:04:23,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:23,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2023-08-03 16:04:23,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:23,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:23,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:23,782 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 41 flow. Second operand 3 states and 234 transitions. [2023-08-03 16:04:23,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 83 flow [2023-08-03 16:04:23,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 83 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:23,785 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 49 flow [2023-08-03 16:04:23,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-03 16:04:23,789 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-03 16:04:23,789 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 49 flow [2023-08-03 16:04:23,790 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 16:04:23,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:23,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:04:23,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:04:23,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:23,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash -407213898, now seen corresponding path program 1 times [2023-08-03 16:04:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:23,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354838053] [2023-08-03 16:04:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:23,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:23,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:04:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:23,851 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:04:23,852 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:04:23,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:04:23,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:04:23,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:04:23,854 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:04:23,856 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:04:23,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:04:23,868 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:04:23,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 91 transitions, 194 flow [2023-08-03 16:04:23,891 INFO L124 PetriNetUnfolderBase]: 9/160 cut-off events. [2023-08-03 16:04:23,891 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:04:23,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 160 events. 9/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 334 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2023-08-03 16:04:23,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 91 transitions, 194 flow [2023-08-03 16:04:23,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 81 transitions, 174 flow [2023-08-03 16:04:23,893 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:04:23,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 81 transitions, 174 flow [2023-08-03 16:04:23,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 81 transitions, 174 flow [2023-08-03 16:04:23,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 81 transitions, 174 flow [2023-08-03 16:04:23,909 INFO L124 PetriNetUnfolderBase]: 6/130 cut-off events. [2023-08-03 16:04:23,909 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:04:23,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 130 events. 6/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2023-08-03 16:04:23,911 INFO L119 LiptonReduction]: Number of co-enabled transitions 1340 [2023-08-03 16:04:25,793 INFO L134 LiptonReduction]: Checked pairs total: 3701 [2023-08-03 16:04:25,793 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-03 16:04:25,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:25,795 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;@7dd6ff4e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:25,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:04:25,797 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:25,797 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 16:04:25,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:25,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:25,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:04:25,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:25,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:25,798 INFO L85 PathProgramCache]: Analyzing trace with hash 13546507, now seen corresponding path program 1 times [2023-08-03 16:04:25,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:25,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518734300] [2023-08-03 16:04:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:25,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:25,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518734300] [2023-08-03 16:04:25,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518734300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:25,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:25,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:04:25,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955929821] [2023-08-03 16:04:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:25,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:25,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:25,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 153 [2023-08-03 16:04:25,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:25,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:25,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 153 [2023-08-03 16:04:25,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:25,967 INFO L124 PetriNetUnfolderBase]: 286/595 cut-off events. [2023-08-03 16:04:25,967 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 16:04:25,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 595 events. 286/595 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2983 event pairs, 105 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 196. Up to 482 conditions per place. [2023-08-03 16:04:25,972 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 22 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-03 16:04:25,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 120 flow [2023-08-03 16:04:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-03 16:04:25,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904139433551199 [2023-08-03 16:04:25,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-03 16:04:25,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-03 16:04:25,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:25,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-03 16:04:25,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:25,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:25,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:25,977 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 60 flow. Second operand 3 states and 271 transitions. [2023-08-03 16:04:25,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 120 flow [2023-08-03 16:04:25,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 118 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:25,978 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 70 flow [2023-08-03 16:04:25,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-03 16:04:25,979 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-03 16:04:25,979 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 70 flow [2023-08-03 16:04:25,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:25,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:25,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:25,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:04:25,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:25,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:25,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1734412034, now seen corresponding path program 1 times [2023-08-03 16:04:25,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:25,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588817666] [2023-08-03 16:04:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:25,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:26,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588817666] [2023-08-03 16:04:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588817666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875365712] [2023-08-03 16:04:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:26,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:26,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:26,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:04:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:26,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:04:26,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:26,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:26,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875365712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:26,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:26,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:04:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496585763] [2023-08-03 16:04:26,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:26,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:26,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:26,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 153 [2023-08-03 16:04:26,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:26,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 153 [2023-08-03 16:04:26,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:26,246 INFO L124 PetriNetUnfolderBase]: 261/495 cut-off events. [2023-08-03 16:04:26,246 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-03 16:04:26,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 495 events. 261/495 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2268 event pairs, 35 based on Foata normal form. 5/479 useless extension candidates. Maximal degree in co-relation 209. Up to 327 conditions per place. [2023-08-03 16:04:26,249 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 28 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2023-08-03 16:04:26,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 160 flow [2023-08-03 16:04:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-08-03 16:04:26,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-03 16:04:26,251 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-08-03 16:04:26,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-08-03 16:04:26,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:26,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-08-03 16:04:26,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,255 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,255 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 70 flow. Second operand 4 states and 357 transitions. [2023-08-03 16:04:26,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 160 flow [2023-08-03 16:04:26,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:26,256 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 88 flow [2023-08-03 16:04:26,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-03 16:04:26,257 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-08-03 16:04:26,257 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 88 flow [2023-08-03 16:04:26,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:26,258 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:04:26,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:26,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:26,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:26,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:26,465 INFO L85 PathProgramCache]: Analyzing trace with hash -888780929, now seen corresponding path program 1 times [2023-08-03 16:04:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:26,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839655918] [2023-08-03 16:04:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:26,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839655918] [2023-08-03 16:04:26,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839655918] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588753943] [2023-08-03 16:04:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:26,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:26,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:26,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:26,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:04:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:26,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:04:26,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:26,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:04:26,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588753943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:26,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:04:26,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:04:26,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848105877] [2023-08-03 16:04:26,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:26,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:26,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:26,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:26,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 153 [2023-08-03 16:04:26,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:26,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 153 [2023-08-03 16:04:26,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:26,736 INFO L124 PetriNetUnfolderBase]: 230/424 cut-off events. [2023-08-03 16:04:26,736 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-08-03 16:04:26,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 424 events. 230/424 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1796 event pairs, 0 based on Foata normal form. 20/423 useless extension candidates. Maximal degree in co-relation 182. Up to 326 conditions per place. [2023-08-03 16:04:26,738 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 28 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-03 16:04:26,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 166 flow [2023-08-03 16:04:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2023-08-03 16:04:26,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5712418300653594 [2023-08-03 16:04:26,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2023-08-03 16:04:26,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2023-08-03 16:04:26,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:26,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2023-08-03 16:04:26,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,743 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 88 flow. Second operand 5 states and 437 transitions. [2023-08-03 16:04:26,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 166 flow [2023-08-03 16:04:26,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 159 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:26,747 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 77 flow [2023-08-03 16:04:26,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-08-03 16:04:26,749 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-08-03 16:04:26,749 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 77 flow [2023-08-03 16:04:26,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:26,749 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:26,757 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 16:04:26,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:26,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:26,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:26,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1782422256, now seen corresponding path program 1 times [2023-08-03 16:04:26,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:26,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295519894] [2023-08-03 16:04:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:26,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:27,016 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 16:04:27,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:27,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295519894] [2023-08-03 16:04:27,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295519894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:27,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:27,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:04:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34295560] [2023-08-03 16:04:27,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:27,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:27,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:27,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 153 [2023-08-03 16:04:27,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:27,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:27,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 153 [2023-08-03 16:04:27,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:27,096 INFO L124 PetriNetUnfolderBase]: 302/615 cut-off events. [2023-08-03 16:04:27,096 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2023-08-03 16:04:27,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 615 events. 302/615 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3111 event pairs, 184 based on Foata normal form. 16/624 useless extension candidates. Maximal degree in co-relation 333. Up to 377 conditions per place. [2023-08-03 16:04:27,099 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 23 selfloop transitions, 4 changer transitions 1/32 dead transitions. [2023-08-03 16:04:27,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 149 flow [2023-08-03 16:04:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-03 16:04:27,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.599128540305011 [2023-08-03 16:04:27,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-03 16:04:27,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-03 16:04:27,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:27,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-03 16:04:27,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:27,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:27,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:27,103 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 77 flow. Second operand 3 states and 275 transitions. [2023-08-03 16:04:27,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 149 flow [2023-08-03 16:04:27,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 144 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:27,105 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 96 flow [2023-08-03 16:04:27,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-03 16:04:27,107 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2023-08-03 16:04:27,107 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 96 flow [2023-08-03 16:04:27,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:27,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:27,108 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:27,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:04:27,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:27,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1460867241, now seen corresponding path program 1 times [2023-08-03 16:04:27,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:27,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828888891] [2023-08-03 16:04:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:27,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:27,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:04:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:27,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:04:27,151 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:04:27,151 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:04:27,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:04:27,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:04:27,152 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 16:04:27,155 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:04:27,155 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:04:27,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:04:27 BasicIcfg [2023-08-03 16:04:27,194 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:04:27,194 INFO L158 Benchmark]: Toolchain (without parser) took 7187.23ms. Allocated memory was 354.4MB in the beginning and 497.0MB in the end (delta: 142.6MB). Free memory was 304.9MB in the beginning and 465.5MB in the end (delta: -160.7MB). Peak memory consumption was 276.6MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,194 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 354.4MB. Free memory is still 307.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:27,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.57ms. Allocated memory is still 354.4MB. Free memory was 304.5MB in the beginning and 285.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.20ms. Allocated memory is still 354.4MB. Free memory was 285.3MB in the beginning and 283.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,195 INFO L158 Benchmark]: Boogie Preprocessor took 20.35ms. Allocated memory is still 354.4MB. Free memory was 283.2MB in the beginning and 281.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:27,195 INFO L158 Benchmark]: RCFGBuilder took 295.64ms. Allocated memory is still 354.4MB. Free memory was 281.8MB in the beginning and 268.5MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,196 INFO L158 Benchmark]: TraceAbstraction took 6405.42ms. Allocated memory was 354.4MB in the beginning and 497.0MB in the end (delta: 142.6MB). Free memory was 267.9MB in the beginning and 465.5MB in the end (delta: -197.7MB). Peak memory consumption was 238.8MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 354.4MB. Free memory is still 307.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 410.57ms. Allocated memory is still 354.4MB. Free memory was 304.5MB in the beginning and 285.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.20ms. Allocated memory is still 354.4MB. Free memory was 285.3MB in the beginning and 283.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.35ms. Allocated memory is still 354.4MB. Free memory was 283.2MB in the beginning and 281.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 295.64ms. Allocated memory is still 354.4MB. Free memory was 281.8MB in the beginning and 268.5MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6405.42ms. Allocated memory was 354.4MB in the beginning and 497.0MB in the end (delta: 142.6MB). Free memory was 267.9MB in the beginning and 465.5MB in the end (delta: -197.7MB). Peak memory consumption was 238.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 71 PlacesBefore, 20 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 560 CoEnabledTransitionPairs, 7 FixpointIterations, 30 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 1648 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 681, independent: 528, independent conditional: 0, independent unconditional: 528, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 287, independent: 264, independent conditional: 0, independent unconditional: 264, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 681, independent: 264, independent conditional: 0, independent unconditional: 264, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 287, unknown conditional: 0, unknown unconditional: 287] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 84 PlacesBefore, 28 PlacesAfterwards, 81 TransitionsBefore, 24 TransitionsAfterwards, 1340 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 3701 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1271, independent: 1100, independent conditional: 0, independent unconditional: 1100, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 641, independent: 602, independent conditional: 0, independent unconditional: 602, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1271, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 132, dependent conditional: 0, dependent unconditional: 132, unknown: 641, unknown conditional: 0, unknown unconditional: 641] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id[2]; [L697] 0 int asdf=0; VAL [A={3:0}, B={4:0}, asdf=0, g=42, id={5:0}, r=1] [L697] COND TRUE 0 asdf<2 [L697] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=0, g=42, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-2, r=1] [L697] 0 asdf++ VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=1, g=42, id={5:0}, r=1] [L697] COND TRUE 0 asdf<2 [L697] FCALL, FORK 0 pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=1, g=42, id={5:0}, pthread_create(&id[asdf], ((void *)0), t_fun, ((void *)0))=-1, r=1] [L697] 0 asdf++ VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=2, g=42, id={5:0}, r=1] [L697] COND FALSE 0 !(asdf<2) [L700] COND TRUE 0 \read(r) [L701] 0 g = 17 VAL [A={3:0}, B={4:0}, arg={0:0}, asdf=2, g=17, id={5:0}, r=1] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, B={4:0}, \old(cond)=0, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: 697]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 89 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 36 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=49occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 100 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 214 IncrementalHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 3 mSDtfsCounter, 214 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=4, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 145 SizeOfPredicates, 0 NumberOfNonLiveVariables, 239 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 17/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 16:04:27,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...