/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_61-invariant_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:51:21,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:51:21,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:51:21,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:51:21,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:51:21,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:51:21,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:51:21,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:51:21,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:51:21,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:51:21,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:51:21,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:51:21,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:51:21,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:51:21,396 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:51:21,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:51:21,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:51:21,397 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:51:21,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:51:21,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:51:21,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:51:21,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:51:21,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:51:21,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:51:21,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:51:21,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:51:21,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:51:21,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:51:21,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:51:21,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:51:21,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:51:21,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:51:21,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:51:21,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:51:21,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:51:21,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:51:21,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:51:21,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:51:21,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:51:21,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:51:21,402 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:51:21,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 03:51:21,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:51:21,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:51:21,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:51:21,627 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:51:21,628 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:51:21,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_61-invariant_racing_bound2.i [2023-08-04 03:51:22,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:51:22,819 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:51:22,819 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_61-invariant_racing_bound2.i [2023-08-04 03:51:22,838 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25719b1fd/1f9634a5670f41c0b4e5637a95cad48a/FLAGd1696c87e [2023-08-04 03:51:22,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25719b1fd/1f9634a5670f41c0b4e5637a95cad48a [2023-08-04 03:51:22,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:51:22,853 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:51:22,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:51:22,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:51:22,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:51:22,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:51:22" (1/1) ... [2023-08-04 03:51:22,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4378e4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:22, skipping insertion in model container [2023-08-04 03:51:22,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:51:22" (1/1) ... [2023-08-04 03:51:22,886 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:51:23,101 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_61-invariant_racing_bound2.i[30176,30189] [2023-08-04 03:51:23,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:51:23,130 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:51:23,153 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 03:51:23,155 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 03:51:23,168 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_61-invariant_racing_bound2.i[30176,30189] [2023-08-04 03:51:23,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:51:23,203 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:51:23,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23 WrapperNode [2023-08-04 03:51:23,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:51:23,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:51:23,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:51:23,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:51:23,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,254 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-08-04 03:51:23,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:51:23,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:51:23,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:51:23,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:51:23,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:51:23,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:51:23,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:51:23,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:51:23,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (1/1) ... [2023-08-04 03:51:23,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:51:23,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:51:23,326 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 03:51:23,328 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 03:51:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:51:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:51:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 03:51:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:51:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:51:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 03:51:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 03:51:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:51:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:51:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:51:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:51:23,359 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 03:51:23,458 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:51:23,459 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:51:23,598 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:51:23,603 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:51:23,603 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-04 03:51:23,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:51:23 BoogieIcfgContainer [2023-08-04 03:51:23,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:51:23,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:51:23,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:51:23,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:51:23,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:51:22" (1/3) ... [2023-08-04 03:51:23,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6652fde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:51:23, skipping insertion in model container [2023-08-04 03:51:23,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:51:23" (2/3) ... [2023-08-04 03:51:23,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6652fde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:51:23, skipping insertion in model container [2023-08-04 03:51:23,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:51:23" (3/3) ... [2023-08-04 03:51:23,614 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_61-invariant_racing_bound2.i [2023-08-04 03:51:23,620 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:51:23,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:51:23,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:51:23,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:51:23,679 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 03:51:23,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 124 transitions, 256 flow [2023-08-04 03:51:23,765 INFO L124 PetriNetUnfolderBase]: 30/179 cut-off events. [2023-08-04 03:51:23,765 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:51:23,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 179 events. 30/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-08-04 03:51:23,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 124 transitions, 256 flow [2023-08-04 03:51:23,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 119 transitions, 243 flow [2023-08-04 03:51:23,794 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:51:23,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 119 transitions, 243 flow [2023-08-04 03:51:23,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 119 transitions, 243 flow [2023-08-04 03:51:23,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 119 transitions, 243 flow [2023-08-04 03:51:23,825 INFO L124 PetriNetUnfolderBase]: 29/174 cut-off events. [2023-08-04 03:51:23,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:23,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 29/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-08-04 03:51:23,828 INFO L119 LiptonReduction]: Number of co-enabled transitions 3782 [2023-08-04 03:51:25,543 INFO L134 LiptonReduction]: Checked pairs total: 9323 [2023-08-04 03:51:25,543 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-04 03:51:25,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:51:25,557 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;@5e7491ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:51:25,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:51:25,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:51:25,563 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-04 03:51:25,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:25,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:25,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 03:51:25,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:51:25,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash 449238078, now seen corresponding path program 1 times [2023-08-04 03:51:25,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:25,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227600743] [2023-08-04 03:51:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:25,732 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 03:51:25,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:25,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227600743] [2023-08-04 03:51:25,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227600743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:25,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:25,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:51:25,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304158398] [2023-08-04 03:51:25,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:25,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:25,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:25,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 210 [2023-08-04 03:51:25,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 52 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 03:51:25,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:25,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 210 [2023-08-04 03:51:25,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:25,865 INFO L124 PetriNetUnfolderBase]: 141/350 cut-off events. [2023-08-04 03:51:25,865 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:25,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 350 events. 141/350 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1471 event pairs, 65 based on Foata normal form. 53/364 useless extension candidates. Maximal degree in co-relation 631. Up to 281 conditions per place. [2023-08-04 03:51:25,867 INFO L140 encePairwiseOnDemand]: 192/210 looper letters, 30 selfloop transitions, 2 changer transitions 6/48 dead transitions. [2023-08-04 03:51:25,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 175 flow [2023-08-04 03:51:25,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-04 03:51:25,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698412698412698 [2023-08-04 03:51:25,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-04 03:51:25,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-04 03:51:25,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:25,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-04 03:51:25,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 03:51:25,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 03:51:25,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 03:51:25,908 INFO L175 Difference]: Start difference. First operand has 40 places, 52 transitions, 109 flow. Second operand 3 states and 359 transitions. [2023-08-04 03:51:25,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 175 flow [2023-08-04 03:51:25,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:51:25,913 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 75 flow [2023-08-04 03:51:25,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-04 03:51:25,917 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-04 03:51:25,917 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 75 flow [2023-08-04 03:51:25,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 03:51:25,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:25,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:51:25,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:51:25,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1362181175, now seen corresponding path program 1 times [2023-08-04 03:51:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:25,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018972624] [2023-08-04 03:51:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:26,024 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 03:51:26,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018972624] [2023-08-04 03:51:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018972624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:51:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112730157] [2023-08-04 03:51:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:26,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:26,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:51:26,026 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 03:51:26,029 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 03:51:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:26,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:51:26,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:51:26,142 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 03:51:26,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:51:26,154 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 03:51:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112730157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:51:26,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:51:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:51:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090779028] [2023-08-04 03:51:26,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:51:26,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:51:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:51:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:51:26,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 210 [2023-08-04 03:51:26,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 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 03:51:26,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:26,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 210 [2023-08-04 03:51:26,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:26,208 INFO L124 PetriNetUnfolderBase]: 21/58 cut-off events. [2023-08-04 03:51:26,208 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 03:51:26,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 58 events. 21/58 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 10/64 useless extension candidates. Maximal degree in co-relation 125. Up to 40 conditions per place. [2023-08-04 03:51:26,211 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-04 03:51:26,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 119 flow [2023-08-04 03:51:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:51:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:51:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2023-08-04 03:51:26,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023809523809524 [2023-08-04 03:51:26,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2023-08-04 03:51:26,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2023-08-04 03:51:26,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:26,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2023-08-04 03:51:26,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 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 03:51:26,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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 03:51:26,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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 03:51:26,225 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 75 flow. Second operand 4 states and 422 transitions. [2023-08-04 03:51:26,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 119 flow [2023-08-04 03:51:26,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 113 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 03:51:26,226 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-04 03:51:26,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-04 03:51:26,226 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -16 predicate places. [2023-08-04 03:51:26,227 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-04 03:51:26,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 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 03:51:26,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:51:26,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 03:51:26,429 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 03:51:26,430 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 03:51:26,431 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 03:51:26,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 124 transitions, 256 flow [2023-08-04 03:51:26,444 INFO L124 PetriNetUnfolderBase]: 30/179 cut-off events. [2023-08-04 03:51:26,444 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:51:26,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 179 events. 30/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-08-04 03:51:26,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 124 transitions, 256 flow [2023-08-04 03:51:26,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 119 transitions, 243 flow [2023-08-04 03:51:26,446 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:51:26,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 119 transitions, 243 flow [2023-08-04 03:51:26,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 119 transitions, 243 flow [2023-08-04 03:51:26,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 119 transitions, 243 flow [2023-08-04 03:51:26,455 INFO L124 PetriNetUnfolderBase]: 29/174 cut-off events. [2023-08-04 03:51:26,456 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:26,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 29/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-08-04 03:51:26,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 3782 [2023-08-04 03:51:28,137 INFO L134 LiptonReduction]: Checked pairs total: 10881 [2023-08-04 03:51:28,138 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-04 03:51:28,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:51:28,140 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;@5e7491ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:51:28,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:51:28,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:51:28,142 INFO L124 PetriNetUnfolderBase]: 8/39 cut-off events. [2023-08-04 03:51:28,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:28,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:28,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 03:51:28,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:51:28,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash -788287719, now seen corresponding path program 1 times [2023-08-04 03:51:28,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:28,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655352945] [2023-08-04 03:51:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:51:28,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:51:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:51:28,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:51:28,180 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:51:28,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 03:51:28,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:51:28,180 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:51:28,181 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 03:51:28,181 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:51:28,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:51:28,192 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 03:51:28,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 157 transitions, 332 flow [2023-08-04 03:51:28,209 INFO L124 PetriNetUnfolderBase]: 51/291 cut-off events. [2023-08-04 03:51:28,209 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:51:28,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 291 events. 51/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 181. Up to 9 conditions per place. [2023-08-04 03:51:28,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 157 transitions, 332 flow [2023-08-04 03:51:28,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 157 transitions, 332 flow [2023-08-04 03:51:28,211 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:51:28,211 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 157 transitions, 332 flow [2023-08-04 03:51:28,212 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 157 transitions, 332 flow [2023-08-04 03:51:28,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 157 transitions, 332 flow [2023-08-04 03:51:28,226 INFO L124 PetriNetUnfolderBase]: 51/291 cut-off events. [2023-08-04 03:51:28,226 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:51:28,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 291 events. 51/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 181. Up to 9 conditions per place. [2023-08-04 03:51:28,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 10168 [2023-08-04 03:51:30,003 INFO L134 LiptonReduction]: Checked pairs total: 31064 [2023-08-04 03:51:30,003 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-04 03:51:30,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:51:30,005 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;@5e7491ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:51:30,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:51:30,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:51:30,007 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2023-08-04 03:51:30,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:51:30,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:30,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 03:51:30,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:51:30,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash 807875875, now seen corresponding path program 1 times [2023-08-04 03:51:30,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:30,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845835035] [2023-08-04 03:51:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:30,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:30,026 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 03:51:30,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:30,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845835035] [2023-08-04 03:51:30,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845835035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:30,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:30,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:51:30,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573437780] [2023-08-04 03:51:30,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:30,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:51:30,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:51:30,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:51:30,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 260 [2023-08-04 03:51:30,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 79 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 03:51:30,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:30,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 260 [2023-08-04 03:51:30,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:30,314 INFO L124 PetriNetUnfolderBase]: 2666/4603 cut-off events. [2023-08-04 03:51:30,314 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:51:30,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8797 conditions, 4603 events. 2666/4603 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 29730 event pairs, 1116 based on Foata normal form. 1005/5140 useless extension candidates. Maximal degree in co-relation 1325. Up to 4118 conditions per place. [2023-08-04 03:51:30,329 INFO L140 encePairwiseOnDemand]: 237/260 looper letters, 39 selfloop transitions, 2 changer transitions 10/69 dead transitions. [2023-08-04 03:51:30,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 254 flow [2023-08-04 03:51:30,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:51:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:51:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 03:51:30,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5782051282051283 [2023-08-04 03:51:30,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 03:51:30,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 03:51:30,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:30,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 03:51:30,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 03:51:30,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 03:51:30,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 03:51:30,333 INFO L175 Difference]: Start difference. First operand has 60 places, 79 transitions, 176 flow. Second operand 3 states and 451 transitions. [2023-08-04 03:51:30,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 254 flow [2023-08-04 03:51:30,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:51:30,335 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 118 flow [2023-08-04 03:51:30,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2023-08-04 03:51:30,336 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2023-08-04 03:51:30,336 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 118 flow [2023-08-04 03:51:30,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 03:51:30,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:30,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:30,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 03:51:30,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:51:30,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash -221747516, now seen corresponding path program 1 times [2023-08-04 03:51:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:30,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821894575] [2023-08-04 03:51:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:30,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:30,378 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 03:51:30,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821894575] [2023-08-04 03:51:30,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821894575] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:51:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529128682] [2023-08-04 03:51:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:30,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:51:30,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:51:30,380 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 03:51:30,382 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 03:51:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:30,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:51:30,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:51:30,449 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 03:51:30,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:51:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:51:30,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529128682] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:51:30,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:51:30,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 03:51:30,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615565152] [2023-08-04 03:51:30,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:51:30,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 03:51:30,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:30,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 03:51:30,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 03:51:30,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 260 [2023-08-04 03:51:30,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 03:51:30,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:30,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 260 [2023-08-04 03:51:30,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:30,681 INFO L124 PetriNetUnfolderBase]: 1705/3087 cut-off events. [2023-08-04 03:51:30,682 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-08-04 03:51:30,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5907 conditions, 3087 events. 1705/3087 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 19470 event pairs, 177 based on Foata normal form. 8/2986 useless extension candidates. Maximal degree in co-relation 4601. Up to 2161 conditions per place. [2023-08-04 03:51:30,695 INFO L140 encePairwiseOnDemand]: 256/260 looper letters, 56 selfloop transitions, 3 changer transitions 1/78 dead transitions. [2023-08-04 03:51:30,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 294 flow [2023-08-04 03:51:30,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:51:30,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:51:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-08-04 03:51:30,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355769230769231 [2023-08-04 03:51:30,696 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-08-04 03:51:30,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-08-04 03:51:30,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:30,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-08-04 03:51:30,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 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 03:51:30,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 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 03:51:30,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 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 03:51:30,700 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 118 flow. Second operand 4 states and 557 transitions. [2023-08-04 03:51:30,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 294 flow [2023-08-04 03:51:30,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:51:30,701 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 130 flow [2023-08-04 03:51:30,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-04 03:51:30,702 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-08-04 03:51:30,702 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 130 flow [2023-08-04 03:51:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 03:51:30,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:30,702 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:30,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 03:51:30,914 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 03:51:30,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:51:30,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash 755876713, now seen corresponding path program 1 times [2023-08-04 03:51:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:30,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424363857] [2023-08-04 03:51:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:30,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:31,116 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 03:51:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424363857] [2023-08-04 03:51:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424363857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 03:51:31,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790558861] [2023-08-04 03:51:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:31,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 03:51:31,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 03:51:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:51:31,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 260 [2023-08-04 03:51:31,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 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 03:51:31,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:31,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 260 [2023-08-04 03:51:31,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:31,654 INFO L124 PetriNetUnfolderBase]: 3236/5422 cut-off events. [2023-08-04 03:51:31,655 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2023-08-04 03:51:31,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10714 conditions, 5422 events. 3236/5422 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 32514 event pairs, 919 based on Foata normal form. 121/5393 useless extension candidates. Maximal degree in co-relation 8296. Up to 2424 conditions per place. [2023-08-04 03:51:31,675 INFO L140 encePairwiseOnDemand]: 244/260 looper letters, 151 selfloop transitions, 34 changer transitions 0/195 dead transitions. [2023-08-04 03:51:31,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 195 transitions, 790 flow [2023-08-04 03:51:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-04 03:51:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-04 03:51:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1327 transitions. [2023-08-04 03:51:31,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103846153846154 [2023-08-04 03:51:31,678 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1327 transitions. [2023-08-04 03:51:31,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1327 transitions. [2023-08-04 03:51:31,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:31,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1327 transitions. [2023-08-04 03:51:31,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.7) internal successors, (1327), 10 states have internal predecessors, (1327), 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 03:51:31,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 260.0) internal successors, (2860), 11 states have internal predecessors, (2860), 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 03:51:31,685 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 260.0) internal successors, (2860), 11 states have internal predecessors, (2860), 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 03:51:31,685 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 130 flow. Second operand 10 states and 1327 transitions. [2023-08-04 03:51:31,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 195 transitions, 790 flow [2023-08-04 03:51:31,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 195 transitions, 783 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 03:51:31,688 INFO L231 Difference]: Finished difference. Result has 74 places, 85 transitions, 401 flow [2023-08-04 03:51:31,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=401, PETRI_PLACES=74, PETRI_TRANSITIONS=85} [2023-08-04 03:51:31,688 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 14 predicate places. [2023-08-04 03:51:31,689 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 85 transitions, 401 flow [2023-08-04 03:51:31,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 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 03:51:31,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:31,689 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:31,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 03:51:31,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:51:31,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2115379867, now seen corresponding path program 1 times [2023-08-04 03:51:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:31,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087704375] [2023-08-04 03:51:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:31,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:51:31,785 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 03:51:31,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:51:31,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087704375] [2023-08-04 03:51:31,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087704375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:51:31,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:51:31,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:51:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257243739] [2023-08-04 03:51:31,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:51:31,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 03:51:31,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:51:31,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 03:51:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 03:51:31,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 260 [2023-08-04 03:51:31,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 85 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 03:51:31,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:51:31,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 260 [2023-08-04 03:51:31,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:51:31,964 INFO L124 PetriNetUnfolderBase]: 762/1688 cut-off events. [2023-08-04 03:51:31,964 INFO L125 PetriNetUnfolderBase]: For 1768/1847 co-relation queries the response was YES. [2023-08-04 03:51:31,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4402 conditions, 1688 events. 762/1688 cut-off events. For 1768/1847 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9707 event pairs, 252 based on Foata normal form. 329/1989 useless extension candidates. Maximal degree in co-relation 3336. Up to 863 conditions per place. [2023-08-04 03:51:31,971 INFO L140 encePairwiseOnDemand]: 246/260 looper letters, 36 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2023-08-04 03:51:31,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 417 flow [2023-08-04 03:51:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:51:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:51:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2023-08-04 03:51:31,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826923076923077 [2023-08-04 03:51:31,973 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 502 transitions. [2023-08-04 03:51:31,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 502 transitions. [2023-08-04 03:51:31,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:51:31,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 502 transitions. [2023-08-04 03:51:31,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 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 03:51:31,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 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 03:51:31,975 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 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 03:51:31,975 INFO L175 Difference]: Start difference. First operand has 74 places, 85 transitions, 401 flow. Second operand 4 states and 502 transitions. [2023-08-04 03:51:31,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 417 flow [2023-08-04 03:51:31,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 407 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-04 03:51:31,979 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 295 flow [2023-08-04 03:51:31,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-08-04 03:51:31,980 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2023-08-04 03:51:31,980 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 295 flow [2023-08-04 03:51:31,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 03:51:31,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:51:31,981 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:51:31,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 03:51:31,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:51:31,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:51:31,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1279912146, now seen corresponding path program 1 times [2023-08-04 03:51:31,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:51:31,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090062222] [2023-08-04 03:51:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:51:31,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:51:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:51:31,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:51:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:51:32,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:51:32,007 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:51:32,008 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:51:32,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 03:51:32,008 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 03:51:32,008 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2023-08-04 03:51:32,010 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:51:32,010 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:51:32,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:51:32 BasicIcfg [2023-08-04 03:51:32,037 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:51:32,038 INFO L158 Benchmark]: Toolchain (without parser) took 9184.38ms. Allocated memory was 541.1MB in the beginning and 650.1MB in the end (delta: 109.1MB). Free memory was 483.9MB in the beginning and 265.9MB in the end (delta: 217.9MB). Peak memory consumption was 330.1MB. Max. memory is 16.0GB. [2023-08-04 03:51:32,038 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 304.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:51:32,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.07ms. Allocated memory is still 541.1MB. Free memory was 483.9MB in the beginning and 463.8MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 03:51:32,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.27ms. Allocated memory is still 541.1MB. Free memory was 463.8MB in the beginning and 461.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:51:32,038 INFO L158 Benchmark]: Boogie Preprocessor took 26.31ms. Allocated memory is still 541.1MB. Free memory was 461.6MB in the beginning and 460.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:51:32,038 INFO L158 Benchmark]: RCFGBuilder took 327.39ms. Allocated memory is still 541.1MB. Free memory was 460.0MB in the beginning and 444.5MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 03:51:32,039 INFO L158 Benchmark]: TraceAbstraction took 8427.08ms. Allocated memory was 541.1MB in the beginning and 650.1MB in the end (delta: 109.1MB). Free memory was 444.1MB in the beginning and 265.9MB in the end (delta: 178.2MB). Peak memory consumption was 290.3MB. Max. memory is 16.0GB. [2023-08-04 03:51:32,039 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 358.6MB. Free memory is still 304.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 350.07ms. Allocated memory is still 541.1MB. Free memory was 483.9MB in the beginning and 463.8MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.27ms. Allocated memory is still 541.1MB. Free memory was 463.8MB in the beginning and 461.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.31ms. Allocated memory is still 541.1MB. Free memory was 461.6MB in the beginning and 460.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 327.39ms. Allocated memory is still 541.1MB. Free memory was 460.0MB in the beginning and 444.5MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8427.08ms. Allocated memory was 541.1MB in the beginning and 650.1MB in the end (delta: 109.1MB). Free memory was 444.1MB in the beginning and 265.9MB in the end (delta: 178.2MB). Peak memory consumption was 290.3MB. 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: 1.7s, 104 PlacesBefore, 40 PlacesAfterwards, 119 TransitionsBefore, 52 TransitionsAfterwards, 3782 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 86 TotalNumberOfCompositions, 9323 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3349, independent: 3098, independent conditional: 0, independent unconditional: 3098, dependent: 251, dependent conditional: 0, dependent unconditional: 251, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1786, independent: 1736, independent conditional: 0, independent unconditional: 1736, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3349, independent: 1362, independent conditional: 0, independent unconditional: 1362, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 1786, unknown conditional: 0, unknown unconditional: 1786] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 119, Positive conditional cache size: 0, Positive unconditional cache size: 119, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 104 PlacesBefore, 41 PlacesAfterwards, 119 TransitionsBefore, 54 TransitionsAfterwards, 3782 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 TotalNumberOfCompositions, 10881 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3430, independent: 3123, independent conditional: 0, independent unconditional: 3123, dependent: 307, dependent conditional: 0, dependent unconditional: 307, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1761, independent: 1706, independent conditional: 0, independent unconditional: 1706, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3430, independent: 1417, independent conditional: 0, independent unconditional: 1417, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 1761, unknown conditional: 0, unknown unconditional: 1761] , Statistics on independence cache: Total cache size (in pairs): 151, Positive cache size: 121, Positive conditional cache size: 0, Positive unconditional cache size: 121, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 135 PlacesBefore, 60 PlacesAfterwards, 157 TransitionsBefore, 79 TransitionsAfterwards, 10168 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 3 ChoiceCompositions, 103 TotalNumberOfCompositions, 31064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9747, independent: 9300, independent conditional: 0, independent unconditional: 9300, dependent: 447, dependent conditional: 0, dependent unconditional: 447, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4653, independent: 4578, independent conditional: 0, independent unconditional: 4578, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9747, independent: 4722, independent conditional: 0, independent unconditional: 4722, dependent: 372, dependent conditional: 0, dependent unconditional: 372, unknown: 4653, unknown conditional: 0, unknown unconditional: 4653] , Statistics on independence cache: Total cache size (in pairs): 541, Positive cache size: 489, Positive conditional cache size: 0, Positive unconditional cache size: 489, Negative cache size: 52, Negative conditional cache size: 0, Negative unconditional cache size: 52, 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 x = 0; [L698] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L710] 0 pthread_t t_ids[2]; [L710] 0 int i=0; VAL [__global_lock={3:0}, i=0, mutex={4:0}, t_ids={5:0}, x=0] [L710] COND TRUE 0 i<2 [L710] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, arg={0:0}, i=0, mutex={4:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-1, t_ids={5:0}, x=0] [L710] 0 i++ VAL [__global_lock={3:0}, arg={0:0}, i=1, mutex={4:0}, t_ids={5:0}, x=0] [L710] COND TRUE 0 i<2 [L710] 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}, i=1, mutex={4:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=0, t_ids={5:0}, x=0] [L710] 0 i++ VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, i=2, mutex={4:0}, t_ids={5:0}, x=0] [L710] COND FALSE 0 !(i<2) VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, i=2, mutex={4:0}, t_ids={5:0}, x=0] [L711] 0 (x)++ VAL [(x)++=0, __global_lock={3:0}, arg={0:0}, arg={0:0}, i=2, mutex={4:0}, t_ids={5:0}, x=1] [L701] COND FALSE 1 !(x == 0) VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, mutex={4:0}, x=1] [L711] 0 (x)-- [L705] 1 (x)++ [L713] CALL 0 __VERIFIER_assert((x) == 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, mutex={4:0}, x=1] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 131 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: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 0 NumberOfNonLiveVariables, 137 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, 156 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: 3.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 378 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 286 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 832 IncrementalHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 34 mSDtfsCounter, 832 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=401occurred in iteration=3, InterpolantAutomatonStates: 21, 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, 0.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 138 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, 131 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred 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 03:51:32,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...