/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/added_bound_to_unbounded/goblint-regression_28-race_reach_19-callback_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:17:20,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:17:20,099 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:17:20,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:17:20,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:17:20,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:17:20,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:17:20,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:17:20,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:17:20,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:17:20,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:17:20,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:17:20,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:17:20,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:17:20,132 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:17:20,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:17:20,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:17:20,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:17:20,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:17:20,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:17:20,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:17:20,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:17:20,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:17:20,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:17:20,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:17:20,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:17:20,135 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:17:20,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:17:20,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:17:20,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:17:20,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:17:20,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:17:20,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:17:20,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:17:20,137 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:17:20,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:17:20,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:17:20,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:17:20,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:17:20,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:17:20,137 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:17:20,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:17:20,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:17:20,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:17:20,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:17:20,389 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:17:20,391 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:17:20,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_19-callback_racing_bound2.i [2023-08-03 15:17:21,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:17:21,606 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:17:21,606 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_19-callback_racing_bound2.i [2023-08-03 15:17:21,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90903ecd4/2c603cb9cce844b684864b22b071900e/FLAG67e2dd11e [2023-08-03 15:17:21,630 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90903ecd4/2c603cb9cce844b684864b22b071900e [2023-08-03 15:17:21,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:17:21,633 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:17:21,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:17:21,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:17:21,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:17:21,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:21,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2082cf3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21, skipping insertion in model container [2023-08-03 15:17:21,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:21,665 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:17:21,864 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_19-callback_racing_bound2.i[30212,30225] [2023-08-03 15:17:21,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:17:21,890 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:17:21,912 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-03 15:17:21,913 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-03 15:17:21,930 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_19-callback_racing_bound2.i[30212,30225] [2023-08-03 15:17:21,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:17:21,960 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:17:21,964 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:17:21,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21 WrapperNode [2023-08-03 15:17:21,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:17:21,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:17:21,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:17:21,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:17:21,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:21,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,010 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-08-03 15:17:22,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:17:22,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:17:22,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:17:22,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:17:22,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:17:22,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:17:22,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:17:22,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:17:22,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (1/1) ... [2023-08-03 15:17:22,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:17:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:22,066 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 15:17:22,094 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 15:17:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:17:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:17:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:17:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:17:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:17:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:17:22,104 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:17:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:17:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:17:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:17:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:17:22,106 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 15:17:22,231 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:17:22,233 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:17:22,422 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:17:22,431 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:17:22,431 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-03 15:17:22,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:17:22 BoogieIcfgContainer [2023-08-03 15:17:22,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:17:22,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:17:22,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:17:22,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:17:22,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:17:21" (1/3) ... [2023-08-03 15:17:22,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fc1817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:17:22, skipping insertion in model container [2023-08-03 15:17:22,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:21" (2/3) ... [2023-08-03 15:17:22,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fc1817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:17:22, skipping insertion in model container [2023-08-03 15:17:22,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:17:22" (3/3) ... [2023-08-03 15:17:22,439 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_19-callback_racing_bound2.i [2023-08-03 15:17:22,444 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:17:22,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:17:22,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:17:22,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:17:22,503 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:17:22,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 135 transitions, 278 flow [2023-08-03 15:17:22,588 INFO L124 PetriNetUnfolderBase]: 26/205 cut-off events. [2023-08-03 15:17:22,588 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:17:22,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 205 events. 26/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 529 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-03 15:17:22,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 135 transitions, 278 flow [2023-08-03 15:17:22,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 130 transitions, 265 flow [2023-08-03 15:17:22,598 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:17:22,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 130 transitions, 265 flow [2023-08-03 15:17:22,605 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 130 transitions, 265 flow [2023-08-03 15:17:22,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 265 flow [2023-08-03 15:17:22,629 INFO L124 PetriNetUnfolderBase]: 25/200 cut-off events. [2023-08-03 15:17:22,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:17:22,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 200 events. 25/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 492 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-03 15:17:22,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 3040 [2023-08-03 15:17:25,142 INFO L134 LiptonReduction]: Checked pairs total: 4311 [2023-08-03 15:17:25,142 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-03 15:17:25,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:17:25,176 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;@b0f939e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:17:25,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:17:25,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:17:25,189 INFO L124 PetriNetUnfolderBase]: 8/29 cut-off events. [2023-08-03 15:17:25,189 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:17:25,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:25,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 15:17:25,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:17:25,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2099220035, now seen corresponding path program 1 times [2023-08-03 15:17:25,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:25,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675569241] [2023-08-03 15:17:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:25,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:25,424 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 15:17:25,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675569241] [2023-08-03 15:17:25,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675569241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:25,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:25,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:17:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840204407] [2023-08-03 15:17:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:25,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:17:25,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:17:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:17:25,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 254 [2023-08-03 15:17:25,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 34 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:25,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:25,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 254 [2023-08-03 15:17:25,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:25,510 INFO L124 PetriNetUnfolderBase]: 88/207 cut-off events. [2023-08-03 15:17:25,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:17:25,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 207 events. 88/207 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 731 event pairs, 32 based on Foata normal form. 29/194 useless extension candidates. Maximal degree in co-relation 356. Up to 122 conditions per place. [2023-08-03 15:17:25,512 INFO L140 encePairwiseOnDemand]: 241/254 looper letters, 23 selfloop transitions, 2 changer transitions 4/32 dead transitions. [2023-08-03 15:17:25,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 127 flow [2023-08-03 15:17:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:17:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:17:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-08-03 15:17:25,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520997375328084 [2023-08-03 15:17:25,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-08-03 15:17:25,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-08-03 15:17:25,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:25,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-08-03 15:17:25,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 15:17:25,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 15:17:25,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 15:17:25,534 INFO L175 Difference]: Start difference. First operand has 26 places, 34 transitions, 73 flow. Second operand 3 states and 397 transitions. [2023-08-03 15:17:25,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 127 flow [2023-08-03 15:17:25,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:17:25,537 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 63 flow [2023-08-03 15:17:25,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-08-03 15:17:25,541 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-03 15:17:25,542 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 63 flow [2023-08-03 15:17:25,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:25,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:25,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:17:25,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:17:25,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:17:25,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:25,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2099235342, now seen corresponding path program 1 times [2023-08-03 15:17:25,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:25,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948365764] [2023-08-03 15:17:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:25,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:17:25,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:17:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:17:25,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:17:25,577 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:17:25,578 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:17:25,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:17:25,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:17:25,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:17:25,579 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:17:25,581 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:17:25,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:17:25,592 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 15:17:25,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 157 transitions, 332 flow [2023-08-03 15:17:25,613 INFO L124 PetriNetUnfolderBase]: 43/321 cut-off events. [2023-08-03 15:17:25,613 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:17:25,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 321 events. 43/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1104 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 207. Up to 9 conditions per place. [2023-08-03 15:17:25,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 157 transitions, 332 flow [2023-08-03 15:17:25,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 157 transitions, 332 flow [2023-08-03 15:17:25,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:17:25,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 157 transitions, 332 flow [2023-08-03 15:17:25,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 157 transitions, 332 flow [2023-08-03 15:17:25,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 157 transitions, 332 flow [2023-08-03 15:17:25,634 INFO L124 PetriNetUnfolderBase]: 43/321 cut-off events. [2023-08-03 15:17:25,634 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:17:25,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 321 events. 43/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1104 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 207. Up to 9 conditions per place. [2023-08-03 15:17:25,642 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-08-03 15:17:28,311 INFO L134 LiptonReduction]: Checked pairs total: 12194 [2023-08-03 15:17:28,311 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-03 15:17:28,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:17:28,314 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;@b0f939e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:17:28,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:17:28,316 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:17:28,317 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2023-08-03 15:17:28,317 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:17:28,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:28,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 15:17:28,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:17:28,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1561690001, now seen corresponding path program 1 times [2023-08-03 15:17:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:28,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477682593] [2023-08-03 15:17:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:28,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:28,424 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 15:17:28,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477682593] [2023-08-03 15:17:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477682593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:28,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:28,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:17:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971495868] [2023-08-03 15:17:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:17:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:17:28,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:17:28,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 290 [2023-08-03 15:17:28,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 15:17:28,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:28,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 290 [2023-08-03 15:17:28,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:28,739 INFO L124 PetriNetUnfolderBase]: 1919/3175 cut-off events. [2023-08-03 15:17:28,739 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-03 15:17:28,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6326 conditions, 3175 events. 1919/3175 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 15999 event pairs, 823 based on Foata normal form. 197/2722 useless extension candidates. Maximal degree in co-relation 2292. Up to 2046 conditions per place. [2023-08-03 15:17:28,749 INFO L140 encePairwiseOnDemand]: 274/290 looper letters, 46 selfloop transitions, 2 changer transitions 6/58 dead transitions. [2023-08-03 15:17:28,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 58 transitions, 248 flow [2023-08-03 15:17:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:17:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:17:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-03 15:17:28,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436781609195402 [2023-08-03 15:17:28,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-03 15:17:28,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-03 15:17:28,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:28,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-03 15:17:28,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 15:17:28,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 15:17:28,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 15:17:28,756 INFO L175 Difference]: Start difference. First operand has 39 places, 49 transitions, 116 flow. Second operand 3 states and 473 transitions. [2023-08-03 15:17:28,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 58 transitions, 248 flow [2023-08-03 15:17:28,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:17:28,757 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 110 flow [2023-08-03 15:17:28,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-03 15:17:28,758 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-03 15:17:28,758 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 110 flow [2023-08-03 15:17:28,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 15:17:28,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:28,759 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:17:28,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:17:28,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:17:28,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1130747368, now seen corresponding path program 1 times [2023-08-03 15:17:28,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:28,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750591645] [2023-08-03 15:17:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:28,796 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 15:17:28,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:28,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750591645] [2023-08-03 15:17:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750591645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:17:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129398050] [2023-08-03 15:17:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:28,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:28,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:28,800 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 15:17:28,837 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 15:17:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:28,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:17:28,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:17:28,953 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 15:17:28,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:17:28,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129398050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:28,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:17:28,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:17:28,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582634206] [2023-08-03 15:17:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:28,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:28,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:17:28,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 290 [2023-08-03 15:17:28,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 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 15:17:28,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:28,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 290 [2023-08-03 15:17:28,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:29,176 INFO L124 PetriNetUnfolderBase]: 1859/3113 cut-off events. [2023-08-03 15:17:29,177 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2023-08-03 15:17:29,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6584 conditions, 3113 events. 1859/3113 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 16766 event pairs, 248 based on Foata normal form. 0/2680 useless extension candidates. Maximal degree in co-relation 1989. Up to 2896 conditions per place. [2023-08-03 15:17:29,188 INFO L140 encePairwiseOnDemand]: 286/290 looper letters, 49 selfloop transitions, 4 changer transitions 1/57 dead transitions. [2023-08-03 15:17:29,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 250 flow [2023-08-03 15:17:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:17:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:17:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 709 transitions. [2023-08-03 15:17:29,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4889655172413793 [2023-08-03 15:17:29,190 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 709 transitions. [2023-08-03 15:17:29,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 709 transitions. [2023-08-03 15:17:29,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:29,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 709 transitions. [2023-08-03 15:17:29,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 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 15:17:29,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 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 15:17:29,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 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 15:17:29,195 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 110 flow. Second operand 5 states and 709 transitions. [2023-08-03 15:17:29,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 250 flow [2023-08-03 15:17:29,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:17:29,200 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 123 flow [2023-08-03 15:17:29,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-08-03 15:17:29,203 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-03 15:17:29,203 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 123 flow [2023-08-03 15:17:29,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 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 15:17:29,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:29,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:29,223 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 15:17:29,426 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 15:17:29,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:17:29,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1738188020, now seen corresponding path program 1 times [2023-08-03 15:17:29,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:29,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060568318] [2023-08-03 15:17:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:29,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:29,502 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 15:17:29,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060568318] [2023-08-03 15:17:29,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060568318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:17:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020224237] [2023-08-03 15:17:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:29,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:29,517 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 15:17:29,538 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 15:17:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:29,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:17:29,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:17:29,622 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 15:17:29,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:17:29,653 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 15:17:29,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020224237] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:17:29,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:17:29,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 15:17:29,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274329719] [2023-08-03 15:17:29,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:17:29,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:29,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:17:29,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 290 [2023-08-03 15:17:29,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 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 15:17:29,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:29,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 290 [2023-08-03 15:17:29,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:29,873 INFO L124 PetriNetUnfolderBase]: 1749/2917 cut-off events. [2023-08-03 15:17:29,873 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2023-08-03 15:17:29,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 2917 events. 1749/2917 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14389 event pairs, 236 based on Foata normal form. 6/2537 useless extension candidates. Maximal degree in co-relation 2032. Up to 2694 conditions per place. [2023-08-03 15:17:29,881 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 49 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-03 15:17:29,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 255 flow [2023-08-03 15:17:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:17:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:17:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions. [2023-08-03 15:17:29,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496551724137931 [2023-08-03 15:17:29,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions. [2023-08-03 15:17:29,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions. [2023-08-03 15:17:29,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:29,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions. [2023-08-03 15:17:29,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 15:17:29,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 15:17:29,887 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 15:17:29,887 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 123 flow. Second operand 4 states and 576 transitions. [2023-08-03 15:17:29,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 255 flow [2023-08-03 15:17:29,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:17:29,889 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 122 flow [2023-08-03 15:17:29,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-08-03 15:17:29,890 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2023-08-03 15:17:29,891 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 122 flow [2023-08-03 15:17:29,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 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 15:17:29,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:29,891 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:29,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 15:17:30,095 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 15:17:30,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:17:30,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1888148232, now seen corresponding path program 1 times [2023-08-03 15:17:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916513597] [2023-08-03 15:17:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:17:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916513597] [2023-08-03 15:17:30,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916513597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:30,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:30,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:17:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110299821] [2023-08-03 15:17:30,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:30,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:17:30,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 290 [2023-08-03 15:17:30,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:30,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:30,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 290 [2023-08-03 15:17:30,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:30,499 INFO L124 PetriNetUnfolderBase]: 1186/2194 cut-off events. [2023-08-03 15:17:30,499 INFO L125 PetriNetUnfolderBase]: For 441/441 co-relation queries the response was YES. [2023-08-03 15:17:30,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4764 conditions, 2194 events. 1186/2194 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11888 event pairs, 507 based on Foata normal form. 187/2033 useless extension candidates. Maximal degree in co-relation 2041. Up to 1153 conditions per place. [2023-08-03 15:17:30,504 INFO L140 encePairwiseOnDemand]: 279/290 looper letters, 49 selfloop transitions, 11 changer transitions 6/69 dead transitions. [2023-08-03 15:17:30,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 349 flow [2023-08-03 15:17:30,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:17:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:17:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 558 transitions. [2023-08-03 15:17:30,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810344827586207 [2023-08-03 15:17:30,506 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 558 transitions. [2023-08-03 15:17:30,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 558 transitions. [2023-08-03 15:17:30,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:30,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 558 transitions. [2023-08-03 15:17:30,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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 15:17:30,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 15:17:30,509 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 15:17:30,509 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 122 flow. Second operand 4 states and 558 transitions. [2023-08-03 15:17:30,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 349 flow [2023-08-03 15:17:30,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 339 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:17:30,510 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 160 flow [2023-08-03 15:17:30,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-08-03 15:17:30,511 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-03 15:17:30,511 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 160 flow [2023-08-03 15:17:30,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:30,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:30,512 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:30,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:17:30,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:17:30,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash 254765223, now seen corresponding path program 1 times [2023-08-03 15:17:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:30,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891333193] [2023-08-03 15:17:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:17:30,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:17:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:17:30,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:17:30,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:17:30,534 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:17:30,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:17:30,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:17:30,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:17:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:17:30,535 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 15:17:30,538 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:17:30,538 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:17:30,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:17:30 BasicIcfg [2023-08-03 15:17:30,558 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:17:30,559 INFO L158 Benchmark]: Toolchain (without parser) took 8926.16ms. Allocated memory was 608.2MB in the beginning and 729.8MB in the end (delta: 121.6MB). Free memory was 555.1MB in the beginning and 517.1MB in the end (delta: 38.0MB). Peak memory consumption was 161.3MB. Max. memory is 16.0GB. [2023-08-03 15:17:30,559 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 369.1MB. Free memory was 318.2MB in the beginning and 318.1MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:17:30,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.51ms. Allocated memory is still 608.2MB. Free memory was 554.8MB in the beginning and 534.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:17:30,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.17ms. Allocated memory is still 608.2MB. Free memory was 534.5MB in the beginning and 532.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:17:30,559 INFO L158 Benchmark]: Boogie Preprocessor took 27.43ms. Allocated memory is still 608.2MB. Free memory was 532.1MB in the beginning and 530.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:17:30,560 INFO L158 Benchmark]: RCFGBuilder took 394.32ms. Allocated memory is still 608.2MB. Free memory was 530.3MB in the beginning and 514.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 15:17:30,560 INFO L158 Benchmark]: TraceAbstraction took 8123.85ms. Allocated memory was 608.2MB in the beginning and 729.8MB in the end (delta: 121.6MB). Free memory was 514.0MB in the beginning and 517.1MB in the end (delta: -3.1MB). Peak memory consumption was 121.5MB. Max. memory is 16.0GB. [2023-08-03 15:17:30,561 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 369.1MB. Free memory was 318.2MB in the beginning and 318.1MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 331.51ms. Allocated memory is still 608.2MB. Free memory was 554.8MB in the beginning and 534.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.17ms. Allocated memory is still 608.2MB. Free memory was 534.5MB in the beginning and 532.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.43ms. Allocated memory is still 608.2MB. Free memory was 532.1MB in the beginning and 530.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 394.32ms. Allocated memory is still 608.2MB. Free memory was 530.3MB in the beginning and 514.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8123.85ms. Allocated memory was 608.2MB in the beginning and 729.8MB in the end (delta: 121.6MB). Free memory was 514.0MB in the beginning and 517.1MB in the end (delta: -3.1MB). Peak memory consumption was 121.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 119 PlacesBefore, 26 PlacesAfterwards, 130 TransitionsBefore, 34 TransitionsAfterwards, 3040 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 3 ChoiceCompositions, 119 TotalNumberOfCompositions, 4311 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2788, independent: 2669, independent conditional: 0, independent unconditional: 2669, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1638, independent: 1606, independent conditional: 0, independent unconditional: 1606, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2788, independent: 1063, independent conditional: 0, independent unconditional: 1063, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 1638, unknown conditional: 0, unknown unconditional: 1638] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 143 PlacesBefore, 39 PlacesAfterwards, 157 TransitionsBefore, 49 TransitionsAfterwards, 7320 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 4 ChoiceCompositions, 133 TotalNumberOfCompositions, 12194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7173, independent: 6986, independent conditional: 0, independent unconditional: 6986, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3940, independent: 3883, independent conditional: 0, independent unconditional: 3883, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7173, independent: 3103, independent conditional: 0, independent unconditional: 3103, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 3940, unknown conditional: 0, unknown unconditional: 3940] , Statistics on independence cache: Total cache size (in pairs): 213, Positive cache size: 186, Positive conditional cache size: 0, Positive unconditional cache size: 186, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 692]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L704] 0 int glob; [L705] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L720] 0 pthread_t t_ids[2]; [L720] 0 int i=0; VAL [__global_lock={3:0}, glob=0, i=0, mutex1={4:0}, mutex2={5:0}, t_ids={6:0}] [L720] COND TRUE 0 i<2 [L720] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, glob=0, i=0, mutex1={4:0}, mutex2={5:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-3, t_ids={6:0}] [L720] 0 i++ VAL [__global_lock={3:0}, glob=0, i=1, mutex1={4:0}, mutex2={5:0}, t_ids={6:0}] [L720] COND TRUE 0 i<2 [L720] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, glob=0, i=1, mutex1={4:0}, mutex2={5:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-2, t_ids={6:0}] [L720] 0 i++ VAL [__global_lock={3:0}, glob=0, i=2, mutex1={4:0}, mutex2={5:0}, t_ids={6:0}] [L720] COND FALSE 0 !(i<2) [L721] CALL 0 foo(bar) [L699] 0 int i = 0; VAL [__global_lock={3:0}, callback={-1:1}, callback={-1:1}, glob=0, i=0, mutex1={4:0}, mutex2={5:0}] [L699] COND TRUE 0 i < 10 [L700] COND TRUE 0 __VERIFIER_nondet_int() [L701] CALL 0 callback() [L709] 0 (glob)++ [L715] CALL 1 __VERIFIER_assert((glob) == 0) [L692] COND TRUE 1 !(cond) [L692] 1 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, cond=0, glob=1, mutex1={4:0}, mutex2={5:0}] - UnprovableResult [Line: 720]: 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, 139 locations, 3 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: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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, 157 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 220 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 481 IncrementalHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 7 mSDtfsCounter, 481 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 269 SizeOfPredicates, 0 NumberOfNonLiveVariables, 302 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 15:17:30,575 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...