/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_01-simple_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:48:53,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:48:53,533 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:48:53,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:48:53,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:48:53,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:48:53,539 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:48:53,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:48:53,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:48:53,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:48:53,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:48:53,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:48:53,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:48:53,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:48:53,582 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:48:53,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:48:53,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:48:53,582 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:48:53,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:48:53,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:48:53,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:48:53,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:48:53,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:48:53,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:48:53,586 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:48:53,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:48:53,586 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:48:53,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:48:53,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:48:53,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:48:53,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:48:53,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:48:53,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:48:53,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:48:53,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:48:53,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:48:53,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:48:53,589 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:48:53,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:48:53,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:48:53,589 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:48:53,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 03:48:53,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:48:53,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:48:53,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:48:53,847 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:48:53,847 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:48:53,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_01-simple_racing_bound2.i [2023-08-04 03:48:55,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:48:55,281 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:48:55,282 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_01-simple_racing_bound2.i [2023-08-04 03:48:55,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a72dd57a/c488eb81adb0478185131797e126ad21/FLAG4401030b6 [2023-08-04 03:48:55,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a72dd57a/c488eb81adb0478185131797e126ad21 [2023-08-04 03:48:55,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:48:55,316 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:48:55,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:48:55,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:48:55,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:48:55,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750760b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55, skipping insertion in model container [2023-08-04 03:48:55,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,354 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:48:55,630 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_01-simple_racing_bound2.i[30176,30189] [2023-08-04 03:48:55,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:48:55,662 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:48:55,690 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 03:48:55,691 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 03:48:55,701 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_01-simple_racing_bound2.i[30176,30189] [2023-08-04 03:48:55,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:48:55,748 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:48:55,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55 WrapperNode [2023-08-04 03:48:55,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:48:55,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:48:55,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:48:55,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:48:55,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,784 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-08-04 03:48:55,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:48:55,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:48:55,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:48:55,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:48:55,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:48:55,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:48:55,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:48:55,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:48:55,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (1/1) ... [2023-08-04 03:48:55,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:48:55,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:48:55,847 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) [2023-08-04 03:48:55,850 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 [2023-08-04 03:48:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:48:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:48:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 03:48:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:48:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:48:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 03:48:55,878 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 03:48:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:48:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:48:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:48:55,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:48:55,880 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 03:48:55,976 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:48:55,978 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:48:56,137 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:48:56,143 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:48:56,143 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-04 03:48:56,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:48:56 BoogieIcfgContainer [2023-08-04 03:48:56,145 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:48:56,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:48:56,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:48:56,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:48:56,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:48:55" (1/3) ... [2023-08-04 03:48:56,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b063517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:48:56, skipping insertion in model container [2023-08-04 03:48:56,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:48:55" (2/3) ... [2023-08-04 03:48:56,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b063517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:48:56, skipping insertion in model container [2023-08-04 03:48:56,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:48:56" (3/3) ... [2023-08-04 03:48:56,152 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_01-simple_racing_bound2.i [2023-08-04 03:48:56,159 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:48:56,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:48:56,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:48:56,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:48:56,210 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 03:48:56,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 106 transitions, 220 flow [2023-08-04 03:48:56,318 INFO L124 PetriNetUnfolderBase]: 17/139 cut-off events. [2023-08-04 03:48:56,318 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:48:56,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 139 events. 17/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 298 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-08-04 03:48:56,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 106 transitions, 220 flow [2023-08-04 03:48:56,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 101 transitions, 207 flow [2023-08-04 03:48:56,339 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:48:56,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 101 transitions, 207 flow [2023-08-04 03:48:56,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 101 transitions, 207 flow [2023-08-04 03:48:56,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 101 transitions, 207 flow [2023-08-04 03:48:56,410 INFO L124 PetriNetUnfolderBase]: 16/134 cut-off events. [2023-08-04 03:48:56,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:48:56,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 16/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-08-04 03:48:56,414 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-04 03:48:59,178 INFO L134 LiptonReduction]: Checked pairs total: 3727 [2023-08-04 03:48:59,178 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-04 03:48:59,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:48:59,195 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;@3bda6318, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:48:59,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:48:59,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:48:59,198 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-08-04 03:48:59,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:48:59,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:48:59,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 03:48:59,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:48:59,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:48:59,204 INFO L85 PathProgramCache]: Analyzing trace with hash 12454527, now seen corresponding path program 1 times [2023-08-04 03:48:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:48:59,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551189636] [2023-08-04 03:48:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:48:59,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:48:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:48:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:48:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:48:59,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551189636] [2023-08-04 03:48:59,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551189636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:48:59,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:48:59,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:48:59,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705498633] [2023-08-04 03:48:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:48:59,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:48:59,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:48:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:48:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:48:59,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 187 [2023-08-04 03:48:59,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 32 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-08-04 03:48:59,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:48:59,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 187 [2023-08-04 03:48:59,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:48:59,561 INFO L124 PetriNetUnfolderBase]: 88/208 cut-off events. [2023-08-04 03:48:59,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:48:59,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 208 events. 88/208 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 875 event pairs, 0 based on Foata normal form. 21/193 useless extension candidates. Maximal degree in co-relation 391. Up to 188 conditions per place. [2023-08-04 03:48:59,563 INFO L140 encePairwiseOnDemand]: 175/187 looper letters, 21 selfloop transitions, 2 changer transitions 8/32 dead transitions. [2023-08-04 03:48:59,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 129 flow [2023-08-04 03:48:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:48:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:48:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-08-04 03:48:59,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5525846702317291 [2023-08-04 03:48:59,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-08-04 03:48:59,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-08-04 03:48:59,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:48:59,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-08-04 03:48:59,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-08-04 03:48:59,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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) [2023-08-04 03:48:59,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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) [2023-08-04 03:48:59,601 INFO L175 Difference]: Start difference. First operand has 26 places, 32 transitions, 69 flow. Second operand 3 states and 310 transitions. [2023-08-04 03:48:59,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 129 flow [2023-08-04 03:48:59,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:48:59,604 INFO L231 Difference]: Finished difference. Result has 29 places, 16 transitions, 43 flow [2023-08-04 03:48:59,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=43, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2023-08-04 03:48:59,609 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-04 03:48:59,610 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 43 flow [2023-08-04 03:48:59,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-08-04 03:48:59,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:48:59,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:48:59,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:48:59,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:48:59,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:48:59,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1433079744, now seen corresponding path program 1 times [2023-08-04 03:48:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:48:59,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109464329] [2023-08-04 03:48:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:48:59,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:48:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:48:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:48:59,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:48:59,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109464329] [2023-08-04 03:48:59,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109464329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:48:59,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908600343] [2023-08-04 03:48:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:48:59,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:48:59,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:48:59,710 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) [2023-08-04 03:48:59,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 03:48:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:48:59,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:48:59,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:48:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:48:59,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:48:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:48:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908600343] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:48:59,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:48:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:48:59,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006973694] [2023-08-04 03:48:59,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:48:59,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:48:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:48:59,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:48:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:48:59,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 187 [2023-08-04 03:48:59,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 43 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2023-08-04 03:48:59,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:48:59,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 187 [2023-08-04 03:48:59,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:48:59,922 INFO L124 PetriNetUnfolderBase]: 16/46 cut-off events. [2023-08-04 03:48:59,922 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 03:48:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 46 events. 16/46 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 9/55 useless extension candidates. Maximal degree in co-relation 103. Up to 34 conditions per place. [2023-08-04 03:48:59,925 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-04 03:48:59,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 95 flow [2023-08-04 03:48:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:48:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:48:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2023-08-04 03:48:59,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946524064171123 [2023-08-04 03:48:59,931 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2023-08-04 03:48:59,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2023-08-04 03:48:59,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:48:59,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2023-08-04 03:48:59,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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) [2023-08-04 03:48:59,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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) [2023-08-04 03:48:59,940 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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) [2023-08-04 03:48:59,940 INFO L175 Difference]: Start difference. First operand has 29 places, 16 transitions, 43 flow. Second operand 4 states and 370 transitions. [2023-08-04 03:48:59,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 95 flow [2023-08-04 03:48:59,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 03:48:59,941 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 03:48:59,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-04 03:48:59,942 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -7 predicate places. [2023-08-04 03:48:59,942 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 03:48:59,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2023-08-04 03:48:59,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:48:59,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 03:49:00,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:49:00,146 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 03:49:00,147 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 03:49:00,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 106 transitions, 220 flow [2023-08-04 03:49:00,162 INFO L124 PetriNetUnfolderBase]: 17/139 cut-off events. [2023-08-04 03:49:00,163 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:49:00,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 139 events. 17/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 298 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-08-04 03:49:00,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 106 transitions, 220 flow [2023-08-04 03:49:00,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 101 transitions, 207 flow [2023-08-04 03:49:00,166 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:49:00,166 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 101 transitions, 207 flow [2023-08-04 03:49:00,166 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 101 transitions, 207 flow [2023-08-04 03:49:00,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 101 transitions, 207 flow [2023-08-04 03:49:00,175 INFO L124 PetriNetUnfolderBase]: 16/134 cut-off events. [2023-08-04 03:49:00,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:00,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 16/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-08-04 03:49:00,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-04 03:49:02,573 INFO L134 LiptonReduction]: Checked pairs total: 3575 [2023-08-04 03:49:02,573 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-04 03:49:02,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:49:02,576 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;@3bda6318, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:49:02,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:49:02,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:49:02,579 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-08-04 03:49:02,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:02,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:02,579 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 03:49:02,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:49:02,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1554284883, now seen corresponding path program 1 times [2023-08-04 03:49:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:02,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201241420] [2023-08-04 03:49:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:49:02,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:49:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:49:02,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:49:02,638 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:49:02,638 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 03:49:02,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:49:02,638 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:49:02,639 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 03:49:02,639 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:49:02,639 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:49:02,653 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 03:49:02,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 136 transitions, 290 flow [2023-08-04 03:49:02,673 INFO L124 PetriNetUnfolderBase]: 31/226 cut-off events. [2023-08-04 03:49:02,674 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:49:02,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 226 events. 31/226 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-08-04 03:49:02,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 136 transitions, 290 flow [2023-08-04 03:49:02,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 136 transitions, 290 flow [2023-08-04 03:49:02,676 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:49:02,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 136 transitions, 290 flow [2023-08-04 03:49:02,677 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 136 transitions, 290 flow [2023-08-04 03:49:02,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 136 transitions, 290 flow [2023-08-04 03:49:02,693 INFO L124 PetriNetUnfolderBase]: 31/226 cut-off events. [2023-08-04 03:49:02,694 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:49:02,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 226 events. 31/226 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-08-04 03:49:02,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-08-04 03:49:05,294 INFO L134 LiptonReduction]: Checked pairs total: 15612 [2023-08-04 03:49:05,294 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-04 03:49:05,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:49:05,297 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;@3bda6318, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:49:05,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:49:05,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:49:05,299 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-08-04 03:49:05,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:05,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:05,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 03:49:05,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:05,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash 23074324, now seen corresponding path program 1 times [2023-08-04 03:49:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:05,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391726128] [2023-08-04 03:49:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:49:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391726128] [2023-08-04 03:49:05,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391726128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:49:05,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:49:05,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:49:05,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042066026] [2023-08-04 03:49:05,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:49:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:49:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:05,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:49:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:49:05,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 231 [2023-08-04 03:49:05,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-08-04 03:49:05,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:05,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 231 [2023-08-04 03:49:05,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:05,578 INFO L124 PetriNetUnfolderBase]: 1376/2498 cut-off events. [2023-08-04 03:49:05,579 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-04 03:49:05,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4822 conditions, 2498 events. 1376/2498 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15256 event pairs, 648 based on Foata normal form. 569/2763 useless extension candidates. Maximal degree in co-relation 645. Up to 2257 conditions per place. [2023-08-04 03:49:05,587 INFO L140 encePairwiseOnDemand]: 213/231 looper letters, 28 selfloop transitions, 2 changer transitions 11/50 dead transitions. [2023-08-04 03:49:05,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 196 flow [2023-08-04 03:49:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:49:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:49:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-04 03:49:05,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642135642135642 [2023-08-04 03:49:05,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-04 03:49:05,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-04 03:49:05,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:05,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-04 03:49:05,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2023-08-04 03:49:05,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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) [2023-08-04 03:49:05,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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) [2023-08-04 03:49:05,597 INFO L175 Difference]: Start difference. First operand has 45 places, 57 transitions, 132 flow. Second operand 3 states and 391 transitions. [2023-08-04 03:49:05,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 196 flow [2023-08-04 03:49:05,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:49:05,601 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 82 flow [2023-08-04 03:49:05,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-08-04 03:49:05,603 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-08-04 03:49:05,603 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 82 flow [2023-08-04 03:49:05,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-08-04 03:49:05,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:05,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:49:05,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 03:49:05,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:05,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:05,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2013097128, now seen corresponding path program 1 times [2023-08-04 03:49:05,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358036102] [2023-08-04 03:49:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:05,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:49:05,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358036102] [2023-08-04 03:49:05,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358036102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:49:05,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891332543] [2023-08-04 03:49:05,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:05,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:49:05,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:49:05,699 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) [2023-08-04 03:49:05,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 03:49:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:05,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:49:05,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:49:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:49:05,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:49:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:49:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891332543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:49:05,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:49:05,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:49:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425900432] [2023-08-04 03:49:05,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:49:05,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:49:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:05,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:49:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:49:05,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 231 [2023-08-04 03:49:05,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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) [2023-08-04 03:49:05,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:05,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 231 [2023-08-04 03:49:05,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:05,983 INFO L124 PetriNetUnfolderBase]: 616/1100 cut-off events. [2023-08-04 03:49:05,984 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-08-04 03:49:05,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1100 events. 616/1100 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5796 event pairs, 154 based on Foata normal form. 7/1107 useless extension candidates. Maximal degree in co-relation 336. Up to 693 conditions per place. [2023-08-04 03:49:05,989 INFO L140 encePairwiseOnDemand]: 227/231 looper letters, 41 selfloop transitions, 3 changer transitions 1/54 dead transitions. [2023-08-04 03:49:05,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 216 flow [2023-08-04 03:49:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:49:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:49:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 482 transitions. [2023-08-04 03:49:05,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216450216450217 [2023-08-04 03:49:05,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 482 transitions. [2023-08-04 03:49:05,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 482 transitions. [2023-08-04 03:49:05,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:05,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 482 transitions. [2023-08-04 03:49:05,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2023-08-04 03:49:05,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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) [2023-08-04 03:49:05,996 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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) [2023-08-04 03:49:05,996 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 82 flow. Second operand 4 states and 482 transitions. [2023-08-04 03:49:05,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 216 flow [2023-08-04 03:49:05,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:49:05,999 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 94 flow [2023-08-04 03:49:05,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-04 03:49:06,002 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-08-04 03:49:06,002 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 94 flow [2023-08-04 03:49:06,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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) [2023-08-04 03:49:06,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:06,003 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 03:49:06,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 03:49:06,205 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 [2023-08-04 03:49:06,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:06,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:06,205 INFO L85 PathProgramCache]: Analyzing trace with hash 500838875, now seen corresponding path program 1 times [2023-08-04 03:49:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:06,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704445998] [2023-08-04 03:49:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:49:06,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704445998] [2023-08-04 03:49:06,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704445998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:49:06,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:49:06,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 03:49:06,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404596530] [2023-08-04 03:49:06,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:49:06,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:49:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:49:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:49:06,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 231 [2023-08-04 03:49:06,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-08-04 03:49:06,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:06,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 231 [2023-08-04 03:49:06,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:06,384 INFO L124 PetriNetUnfolderBase]: 646/1150 cut-off events. [2023-08-04 03:49:06,384 INFO L125 PetriNetUnfolderBase]: For 807/807 co-relation queries the response was YES. [2023-08-04 03:49:06,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2693 conditions, 1150 events. 646/1150 cut-off events. For 807/807 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5652 event pairs, 262 based on Foata normal form. 9/1152 useless extension candidates. Maximal degree in co-relation 1952. Up to 979 conditions per place. [2023-08-04 03:49:06,390 INFO L140 encePairwiseOnDemand]: 227/231 looper letters, 34 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-04 03:49:06,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 214 flow [2023-08-04 03:49:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:49:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:49:06,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-08-04 03:49:06,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-08-04 03:49:06,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-08-04 03:49:06,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-08-04 03:49:06,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:06,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-08-04 03:49:06,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:49:06,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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) [2023-08-04 03:49:06,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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) [2023-08-04 03:49:06,395 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 94 flow. Second operand 3 states and 363 transitions. [2023-08-04 03:49:06,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 214 flow [2023-08-04 03:49:06,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 202 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 03:49:06,398 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 106 flow [2023-08-04 03:49:06,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-04 03:49:06,399 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-08-04 03:49:06,399 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 106 flow [2023-08-04 03:49:06,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-08-04 03:49:06,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:06,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:49:06,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 03:49:06,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:06,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1776302410, now seen corresponding path program 1 times [2023-08-04 03:49:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:06,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40150634] [2023-08-04 03:49:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:06,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:49:06,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:06,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40150634] [2023-08-04 03:49:06,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40150634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:49:06,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:49:06,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 03:49:06,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514134605] [2023-08-04 03:49:06,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:49:06,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:49:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:49:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:49:06,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 231 [2023-08-04 03:49:06,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 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) [2023-08-04 03:49:06,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:06,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 231 [2023-08-04 03:49:06,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:06,678 INFO L124 PetriNetUnfolderBase]: 341/754 cut-off events. [2023-08-04 03:49:06,678 INFO L125 PetriNetUnfolderBase]: For 519/519 co-relation queries the response was YES. [2023-08-04 03:49:06,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 754 events. 341/754 cut-off events. For 519/519 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3742 event pairs, 148 based on Foata normal form. 135/887 useless extension candidates. Maximal degree in co-relation 984. Up to 369 conditions per place. [2023-08-04 03:49:06,682 INFO L140 encePairwiseOnDemand]: 219/231 looper letters, 34 selfloop transitions, 12 changer transitions 0/53 dead transitions. [2023-08-04 03:49:06,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 257 flow [2023-08-04 03:49:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:49:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:49:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2023-08-04 03:49:06,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2023-08-04 03:49:06,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 444 transitions. [2023-08-04 03:49:06,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 444 transitions. [2023-08-04 03:49:06,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:06,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 444 transitions. [2023-08-04 03:49:06,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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) [2023-08-04 03:49:06,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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) [2023-08-04 03:49:06,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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) [2023-08-04 03:49:06,687 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 106 flow. Second operand 4 states and 444 transitions. [2023-08-04 03:49:06,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 257 flow [2023-08-04 03:49:06,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:49:06,690 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 162 flow [2023-08-04 03:49:06,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-04 03:49:06,691 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-08-04 03:49:06,691 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 162 flow [2023-08-04 03:49:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 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) [2023-08-04 03:49:06,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:06,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:49:06,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 03:49:06,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:06,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1736108846, now seen corresponding path program 1 times [2023-08-04 03:49:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:06,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136217185] [2023-08-04 03:49:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:06,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:49:06,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:49:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:49:06,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:49:06,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:49:06,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:49:06,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 03:49:06,722 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 03:49:06,722 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2023-08-04 03:49:06,724 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:49:06,724 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:49:06,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:49:06 BasicIcfg [2023-08-04 03:49:06,761 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:49:06,762 INFO L158 Benchmark]: Toolchain (without parser) took 11445.22ms. Allocated memory was 421.5MB in the beginning and 507.5MB in the end (delta: 86.0MB). Free memory was 369.6MB in the beginning and 281.2MB in the end (delta: 88.4MB). Peak memory consumption was 175.1MB. Max. memory is 16.0GB. [2023-08-04 03:49:06,762 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 316.7MB. Free memory was 268.2MB in the beginning and 268.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:49:06,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.87ms. Allocated memory is still 421.5MB. Free memory was 369.6MB in the beginning and 349.7MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 03:49:06,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.33ms. Allocated memory is still 421.5MB. Free memory was 349.7MB in the beginning and 347.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:49:06,762 INFO L158 Benchmark]: Boogie Preprocessor took 23.46ms. Allocated memory is still 421.5MB. Free memory was 347.5MB in the beginning and 345.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:49:06,763 INFO L158 Benchmark]: RCFGBuilder took 335.28ms. Allocated memory is still 421.5MB. Free memory was 345.8MB in the beginning and 331.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 03:49:06,763 INFO L158 Benchmark]: TraceAbstraction took 10614.69ms. Allocated memory was 421.5MB in the beginning and 507.5MB in the end (delta: 86.0MB). Free memory was 330.5MB in the beginning and 281.2MB in the end (delta: 49.3MB). Peak memory consumption was 137.4MB. Max. memory is 16.0GB. [2023-08-04 03:49:06,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 316.7MB. Free memory was 268.2MB in the beginning and 268.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 430.87ms. Allocated memory is still 421.5MB. Free memory was 369.6MB in the beginning and 349.7MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.33ms. Allocated memory is still 421.5MB. Free memory was 349.7MB in the beginning and 347.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.46ms. Allocated memory is still 421.5MB. Free memory was 347.5MB in the beginning and 345.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 335.28ms. Allocated memory is still 421.5MB. Free memory was 345.8MB in the beginning and 331.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 10614.69ms. Allocated memory was 421.5MB in the beginning and 507.5MB in the end (delta: 86.0MB). Free memory was 330.5MB in the beginning and 281.2MB in the end (delta: 49.3MB). Peak memory consumption was 137.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 93 PlacesBefore, 26 PlacesAfterwards, 101 TransitionsBefore, 32 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3727 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2432, independent: 2304, independent conditional: 0, independent unconditional: 2304, dependent: 128, dependent conditional: 0, dependent unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1181, independent: 1154, independent conditional: 0, independent unconditional: 1154, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2432, independent: 1150, independent conditional: 0, independent unconditional: 1150, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 1181, unknown conditional: 0, unknown unconditional: 1181] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 93 PlacesBefore, 25 PlacesAfterwards, 101 TransitionsBefore, 30 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 84 TotalNumberOfCompositions, 3575 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2287, independent: 2167, independent conditional: 0, independent unconditional: 2167, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1161, independent: 1134, independent conditional: 0, independent unconditional: 1134, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2287, independent: 1033, independent conditional: 0, independent unconditional: 1033, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 1161, unknown conditional: 0, unknown unconditional: 1161] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 122 PlacesBefore, 45 PlacesAfterwards, 136 TransitionsBefore, 57 TransitionsAfterwards, 6552 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 2 ChoiceCompositions, 95 TotalNumberOfCompositions, 15612 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7220, independent: 6958, independent conditional: 0, independent unconditional: 6958, dependent: 262, dependent conditional: 0, dependent unconditional: 262, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3137, independent: 3093, independent conditional: 0, independent unconditional: 3093, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7220, independent: 3865, independent conditional: 0, independent unconditional: 3865, dependent: 218, dependent conditional: 0, dependent unconditional: 218, unknown: 3137, unknown conditional: 0, unknown unconditional: 3137] , Statistics on independence cache: Total cache size (in pairs): 281, Positive cache size: 257, Positive conditional cache size: 0, Positive unconditional cache size: 257, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 int global = 0; [L698] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L699] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t t_ids[2]; [L707] 0 int i=0; VAL [__global_lock={3:0}, global=0, i=0, mutex1={4:0}, mutex2={5:0}, t_ids={6:0}] [L707] COND TRUE 0 i<2 [L707] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, arg={0:0}, global=0, i=0, mutex1={4:0}, mutex2={5:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-2, t_ids={6:0}] [L707] 0 i++ VAL [__global_lock={3:0}, arg={0:0}, global=0, i=1, mutex1={4:0}, mutex2={5:0}, t_ids={6:0}] [L707] COND TRUE 0 i<2 [L702] 1 (global)++ [L707] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, global=1, i=1, mutex1={4:0}, mutex2={5:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-1, t_ids={6:0}] [L707] 0 i++ VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, global=1, i=2, mutex1={4:0}, mutex2={5:0}, t_ids={6:0}] [L707] COND FALSE 0 !(i<2) [L709] CALL 0 __VERIFIER_assert((global) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={0:0}, arg={0:0}, cond=0, global=1, mutex1={4:0}, mutex2={5:0}] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 118 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 2 mSDtfsCounter, 86 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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, 141 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 8 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 118 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 03:49:06,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...