/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_38-traces-ex-4-switch_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:02:23,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:02:23,560 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:02:23,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:02:23,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:02:23,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:02:23,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:02:23,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:02:23,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:02:23,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:02:23,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:02:23,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:02:23,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:02:23,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:02:23,578 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:02:23,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:02:23,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:02:23,579 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:02:23,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:02:23,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:02:23,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:02:23,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:02:23,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:02:23,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:02:23,581 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:02:23,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:02:23,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:02:23,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:02:23,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:02:23,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:02:23,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:23,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:02:23,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:02:23,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:02:23,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:02:23,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:02:23,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:02:23,583 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:02:23,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:02:23,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:02:23,584 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:02:23,584 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:02:23,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:02:23,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:02:23,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:02:23,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:02:23,790 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:02:23,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_38-traces-ex-4-switch_true_bound2.i [2023-08-03 16:02:24,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:02:24,979 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:02:24,980 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_38-traces-ex-4-switch_true_bound2.i [2023-08-03 16:02:24,993 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84fd6ac91/034497d116bf43989067281a94b4868c/FLAG5bd1afd80 [2023-08-03 16:02:25,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84fd6ac91/034497d116bf43989067281a94b4868c [2023-08-03 16:02:25,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:02:25,012 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:02:25,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:25,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:02:25,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:02:25,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cfabb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25, skipping insertion in model container [2023-08-03 16:02:25,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,044 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:02:25,143 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_38-traces-ex-4-switch_true_bound2.i[1095,1108] [2023-08-03 16:02:25,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:25,288 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:02:25,296 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_38-traces-ex-4-switch_true_bound2.i[1095,1108] [2023-08-03 16:02:25,313 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:02:25,314 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:02:25,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:02:25,358 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:02:25,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25 WrapperNode [2023-08-03 16:02:25,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:02:25,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:25,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:02:25,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:02:25,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,389 INFO L138 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-08-03 16:02:25,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:02:25,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:02:25,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:02:25,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:02:25,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:02:25,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:02:25,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:02:25,405 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:02:25,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (1/1) ... [2023-08-03 16:02:25,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:02:25,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:25,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:02:25,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:02:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:02:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:02:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:02:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:02:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:02:25,470 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:02:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:02:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:02:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:02:25,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:02:25,472 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:02:25,592 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:02:25,594 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:02:25,709 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:02:25,713 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:02:25,713 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 16:02:25,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:25 BoogieIcfgContainer [2023-08-03 16:02:25,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:02:25,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:02:25,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:02:25,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:02:25,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:02:25" (1/3) ... [2023-08-03 16:02:25,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a36b711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:25, skipping insertion in model container [2023-08-03 16:02:25,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:02:25" (2/3) ... [2023-08-03 16:02:25,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a36b711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:02:25, skipping insertion in model container [2023-08-03 16:02:25,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:02:25" (3/3) ... [2023-08-03 16:02:25,719 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_38-traces-ex-4-switch_true_bound2.i [2023-08-03 16:02:25,724 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:02:25,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:02:25,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:02:25,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:02:25,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:25,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 72 transitions, 149 flow [2023-08-03 16:02:25,805 INFO L124 PetriNetUnfolderBase]: 4/97 cut-off events. [2023-08-03 16:02:25,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:25,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 4/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-03 16:02:25,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 72 transitions, 149 flow [2023-08-03 16:02:25,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 62 transitions, 129 flow [2023-08-03 16:02:25,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:25,819 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 62 transitions, 129 flow [2023-08-03 16:02:25,820 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 62 transitions, 129 flow [2023-08-03 16:02:25,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 129 flow [2023-08-03 16:02:25,834 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2023-08-03 16:02:25,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:25,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2023-08-03 16:02:25,835 INFO L119 LiptonReduction]: Number of co-enabled transitions 588 [2023-08-03 16:02:27,233 INFO L134 LiptonReduction]: Checked pairs total: 1449 [2023-08-03 16:02:27,234 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-08-03 16:02:27,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:27,248 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;@4109bfb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:27,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:02:27,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:27,250 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 16:02:27,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:27,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:27,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:02:27,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:27,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash 7674757, now seen corresponding path program 1 times [2023-08-03 16:02:27,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:27,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102609027] [2023-08-03 16:02:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:27,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:27,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102609027] [2023-08-03 16:02:27,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102609027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:27,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:27,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:27,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568744147] [2023-08-03 16:02:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:27,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:27,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:27,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 119 [2023-08-03 16:02:27,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:27,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:27,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 119 [2023-08-03 16:02:27,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:27,549 INFO L124 PetriNetUnfolderBase]: 20/61 cut-off events. [2023-08-03 16:02:27,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:27,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 61 events. 20/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 194 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 102. Up to 46 conditions per place. [2023-08-03 16:02:27,552 INFO L140 encePairwiseOnDemand]: 116/119 looper letters, 14 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-03 16:02:27,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 79 flow [2023-08-03 16:02:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-08-03 16:02:27,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5854341736694678 [2023-08-03 16:02:27,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-08-03 16:02:27,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-08-03 16:02:27,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:27,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-08-03 16:02:27,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:27,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:27,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:27,578 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 37 flow. Second operand 3 states and 209 transitions. [2023-08-03 16:02:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 79 flow [2023-08-03 16:02:27,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 79 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:27,581 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 45 flow [2023-08-03 16:02:27,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-03 16:02:27,586 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-03 16:02:27,586 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 45 flow [2023-08-03 16:02:27,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:27,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:27,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:02:27,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:02:27,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:27,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1199169829, now seen corresponding path program 1 times [2023-08-03 16:02:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:27,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60688842] [2023-08-03 16:02:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:27,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:27,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:02:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:02:27,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:02:27,647 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:02:27,648 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:02:27,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:02:27,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:02:27,650 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:02:27,651 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:02:27,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:02:27,660 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:02:27,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 87 transitions, 186 flow [2023-08-03 16:02:27,679 INFO L124 PetriNetUnfolderBase]: 6/142 cut-off events. [2023-08-03 16:02:27,679 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:27,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 142 events. 6/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 285 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2023-08-03 16:02:27,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 87 transitions, 186 flow [2023-08-03 16:02:27,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 77 transitions, 166 flow [2023-08-03 16:02:27,680 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:02:27,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 166 flow [2023-08-03 16:02:27,681 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 166 flow [2023-08-03 16:02:27,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 166 flow [2023-08-03 16:02:27,690 INFO L124 PetriNetUnfolderBase]: 3/112 cut-off events. [2023-08-03 16:02:27,691 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:02:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 3/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 169 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 78. Up to 6 conditions per place. [2023-08-03 16:02:27,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 1596 [2023-08-03 16:02:29,054 INFO L134 LiptonReduction]: Checked pairs total: 4968 [2023-08-03 16:02:29,054 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-03 16:02:29,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:02:29,057 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;@4109bfb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:02:29,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:02:29,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:02:29,058 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 16:02:29,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:02:29,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:29,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:02:29,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:29,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash 12415405, now seen corresponding path program 1 times [2023-08-03 16:02:29,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:29,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819354397] [2023-08-03 16:02:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:29,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:29,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:29,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819354397] [2023-08-03 16:02:29,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819354397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:29,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:29,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:02:29,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198012013] [2023-08-03 16:02:29,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:29,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:29,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:29,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 139 [2023-08-03 16:02:29,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:29,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 139 [2023-08-03 16:02:29,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:29,163 INFO L124 PetriNetUnfolderBase]: 289/607 cut-off events. [2023-08-03 16:02:29,163 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 16:02:29,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 607 events. 289/607 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3225 event pairs, 205 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 214. Up to 495 conditions per place. [2023-08-03 16:02:29,166 INFO L140 encePairwiseOnDemand]: 136/139 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-03 16:02:29,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 122 flow [2023-08-03 16:02:29,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-08-03 16:02:29,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6187050359712231 [2023-08-03 16:02:29,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-08-03 16:02:29,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-08-03 16:02:29,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:29,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-08-03 16:02:29,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,170 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 64 flow. Second operand 3 states and 258 transitions. [2023-08-03 16:02:29,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 122 flow [2023-08-03 16:02:29,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 120 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:02:29,170 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 74 flow [2023-08-03 16:02:29,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-03 16:02:29,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-03 16:02:29,171 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 74 flow [2023-08-03 16:02:29,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:29,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:29,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:02:29,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:29,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1816652575, now seen corresponding path program 1 times [2023-08-03 16:02:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231196425] [2023-08-03 16:02:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:29,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:29,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231196425] [2023-08-03 16:02:29,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231196425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:29,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370092949] [2023-08-03 16:02:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:29,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:29,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:29,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:02:29,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:02:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:29,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:02:29,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:29,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:02:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:29,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370092949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:02:29,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:02:29,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:02:29,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515815198] [2023-08-03 16:02:29,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:02:29,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:29,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:29,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 139 [2023-08-03 16:02:29,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:29,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 139 [2023-08-03 16:02:29,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:29,425 INFO L124 PetriNetUnfolderBase]: 277/520 cut-off events. [2023-08-03 16:02:29,425 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-03 16:02:29,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 520 events. 277/520 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2593 event pairs, 51 based on Foata normal form. 5/522 useless extension candidates. Maximal degree in co-relation 600. Up to 317 conditions per place. [2023-08-03 16:02:29,428 INFO L140 encePairwiseOnDemand]: 135/139 looper letters, 29 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-08-03 16:02:29,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 170 flow [2023-08-03 16:02:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-08-03 16:02:29,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6151079136690647 [2023-08-03 16:02:29,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-08-03 16:02:29,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-08-03 16:02:29,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:29,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-08-03 16:02:29,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 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) [2023-08-03 16:02:29,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 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) [2023-08-03 16:02:29,432 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 74 flow. Second operand 4 states and 342 transitions. [2023-08-03 16:02:29,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 170 flow [2023-08-03 16:02:29,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:02:29,433 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 92 flow [2023-08-03 16:02:29,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-03 16:02:29,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-08-03 16:02:29,434 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 92 flow [2023-08-03 16:02:29,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:29,434 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:02:29,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 16:02:29,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:29,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:29,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:29,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1398045758, now seen corresponding path program 1 times [2023-08-03 16:02:29,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:29,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351614416] [2023-08-03 16:02:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351614416] [2023-08-03 16:02:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351614416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:02:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754768823] [2023-08-03 16:02:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:29,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:02:29,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:02:29,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:02:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:29,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:02:29,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:02:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:02:29,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:02:29,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754768823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:29,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:02:29,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:02:29,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200566822] [2023-08-03 16:02:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:29,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:02:29,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 139 [2023-08-03 16:02:29,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:29,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 139 [2023-08-03 16:02:29,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:29,853 INFO L124 PetriNetUnfolderBase]: 228/420 cut-off events. [2023-08-03 16:02:29,854 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-08-03 16:02:29,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 420 events. 228/420 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1939 event pairs, 0 based on Foata normal form. 30/448 useless extension candidates. Maximal degree in co-relation 195. Up to 316 conditions per place. [2023-08-03 16:02:29,856 INFO L140 encePairwiseOnDemand]: 136/139 looper letters, 29 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2023-08-03 16:02:29,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 176 flow [2023-08-03 16:02:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:02:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:02:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-08-03 16:02:29,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6014388489208633 [2023-08-03 16:02:29,857 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-08-03 16:02:29,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-08-03 16:02:29,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:29,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-08-03 16:02:29,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,859 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,859 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 92 flow. Second operand 5 states and 418 transitions. [2023-08-03 16:02:29,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 176 flow [2023-08-03 16:02:29,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 169 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:29,861 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 81 flow [2023-08-03 16:02:29,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-03 16:02:29,861 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-08-03 16:02:29,861 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 81 flow [2023-08-03 16:02:29,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:29,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:29,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:29,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:02:30,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:02:30,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:30,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash 389732020, now seen corresponding path program 1 times [2023-08-03 16:02:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470554555] [2023-08-03 16:02:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:30,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:02:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:30,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470554555] [2023-08-03 16:02:30,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470554555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:30,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:30,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:02:30,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704061275] [2023-08-03 16:02:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:30,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:30,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:30,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:30,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 139 [2023-08-03 16:02:30,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:30,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 139 [2023-08-03 16:02:30,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:30,172 INFO L124 PetriNetUnfolderBase]: 268/611 cut-off events. [2023-08-03 16:02:30,172 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-08-03 16:02:30,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 611 events. 268/611 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3360 event pairs, 177 based on Foata normal form. 29/616 useless extension candidates. Maximal degree in co-relation 561. Up to 345 conditions per place. [2023-08-03 16:02:30,174 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 30 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-03 16:02:30,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 204 flow [2023-08-03 16:02:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:30,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-03 16:02:30,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354916067146283 [2023-08-03 16:02:30,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-03 16:02:30,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-03 16:02:30,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:30,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-03 16:02:30,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,178 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 81 flow. Second operand 3 states and 265 transitions. [2023-08-03 16:02:30,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 204 flow [2023-08-03 16:02:30,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:30,179 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 114 flow [2023-08-03 16:02:30,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-08-03 16:02:30,180 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-08-03 16:02:30,180 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 114 flow [2023-08-03 16:02:30,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:30,181 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:30,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:02:30,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:30,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash -229124787, now seen corresponding path program 1 times [2023-08-03 16:02:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:30,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571655648] [2023-08-03 16:02:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:02:30,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:30,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571655648] [2023-08-03 16:02:30,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571655648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:30,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:30,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:02:30,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92265154] [2023-08-03 16:02:30,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:30,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:02:30,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:02:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:02:30,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-03 16:02:30,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:30,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-03 16:02:30,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:30,304 INFO L124 PetriNetUnfolderBase]: 245/560 cut-off events. [2023-08-03 16:02:30,305 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-08-03 16:02:30,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 560 events. 245/560 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2780 event pairs, 111 based on Foata normal form. 127/686 useless extension candidates. Maximal degree in co-relation 963. Up to 294 conditions per place. [2023-08-03 16:02:30,307 INFO L140 encePairwiseOnDemand]: 128/139 looper letters, 27 selfloop transitions, 11 changer transitions 8/49 dead transitions. [2023-08-03 16:02:30,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 276 flow [2023-08-03 16:02:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:02:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:02:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-03 16:02:30,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947242206235012 [2023-08-03 16:02:30,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-03 16:02:30,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-03 16:02:30,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:30,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-03 16:02:30,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,310 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 114 flow. Second operand 3 states and 248 transitions. [2023-08-03 16:02:30,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 276 flow [2023-08-03 16:02:30,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 49 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:02:30,312 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 145 flow [2023-08-03 16:02:30,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-03 16:02:30,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2023-08-03 16:02:30,313 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 145 flow [2023-08-03 16:02:30,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:02:30,313 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:02:30,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:02:30,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:02:30,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:02:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1355120431, now seen corresponding path program 1 times [2023-08-03 16:02:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:02:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731415227] [2023-08-03 16:02:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:02:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:02:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:02:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:02:30,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:02:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731415227] [2023-08-03 16:02:30,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731415227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:02:30,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:02:30,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:02:30,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102715250] [2023-08-03 16:02:30,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:02:30,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:02:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:02:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:02:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:02:30,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-08-03 16:02:30,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:02:30,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-08-03 16:02:30,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:02:30,534 INFO L124 PetriNetUnfolderBase]: 52/184 cut-off events. [2023-08-03 16:02:30,534 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2023-08-03 16:02:30,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 184 events. 52/184 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 718 event pairs, 23 based on Foata normal form. 57/241 useless extension candidates. Maximal degree in co-relation 337. Up to 130 conditions per place. [2023-08-03 16:02:30,535 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-08-03 16:02:30,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 212 flow [2023-08-03 16:02:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:02:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:02:30,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2023-08-03 16:02:30,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5449640287769785 [2023-08-03 16:02:30,536 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2023-08-03 16:02:30,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2023-08-03 16:02:30,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:02:30,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2023-08-03 16:02:30,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 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) [2023-08-03 16:02:30,538 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 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) [2023-08-03 16:02:30,538 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 145 flow. Second operand 4 states and 303 transitions. [2023-08-03 16:02:30,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 212 flow [2023-08-03 16:02:30,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 190 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:02:30,540 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-03 16:02:30,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-03 16:02:30,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-08-03 16:02:30,541 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-03 16:02:30,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:02:30,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:02:30,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:02:30,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:02:30,542 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 16:02:30,544 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:02:30,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:02:30,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:02:30 BasicIcfg [2023-08-03 16:02:30,548 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:02:30,550 INFO L158 Benchmark]: Toolchain (without parser) took 5536.04ms. Allocated memory is still 482.3MB. Free memory was 445.8MB in the beginning and 445.7MB in the end (delta: 57.4kB). Peak memory consumption was 277.8MB. Max. memory is 16.0GB. [2023-08-03 16:02:30,551 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 358.6MB. Free memory is still 315.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:30,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.11ms. Allocated memory is still 482.3MB. Free memory was 445.8MB in the beginning and 426.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:02:30,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.50ms. Allocated memory is still 482.3MB. Free memory was 426.5MB in the beginning and 424.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:02:30,551 INFO L158 Benchmark]: Boogie Preprocessor took 14.21ms. Allocated memory is still 482.3MB. Free memory was 424.8MB in the beginning and 423.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:02:30,551 INFO L158 Benchmark]: RCFGBuilder took 310.26ms. Allocated memory is still 482.3MB. Free memory was 423.2MB in the beginning and 410.2MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 16:02:30,551 INFO L158 Benchmark]: TraceAbstraction took 4832.24ms. Allocated memory is still 482.3MB. Free memory was 409.7MB in the beginning and 445.7MB in the end (delta: -36.0MB). Peak memory consumption was 242.2MB. Max. memory is 16.0GB. [2023-08-03 16:02:30,552 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 358.6MB. Free memory is still 315.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 348.11ms. Allocated memory is still 482.3MB. Free memory was 445.8MB in the beginning and 426.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.50ms. Allocated memory is still 482.3MB. Free memory was 426.5MB in the beginning and 424.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.21ms. Allocated memory is still 482.3MB. Free memory was 424.8MB in the beginning and 423.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 310.26ms. Allocated memory is still 482.3MB. Free memory was 423.2MB in the beginning and 410.2MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4832.24ms. Allocated memory is still 482.3MB. Free memory was 409.7MB in the beginning and 445.7MB in the end (delta: -36.0MB). Peak memory consumption was 242.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 64 PlacesBefore, 19 PlacesAfterwards, 62 TransitionsBefore, 16 TransitionsAfterwards, 588 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 47 TotalNumberOfCompositions, 1449 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 670, independent: 553, independent conditional: 0, independent unconditional: 553, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 296, independent: 276, independent conditional: 0, independent unconditional: 276, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 670, independent: 277, independent conditional: 0, independent unconditional: 277, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 296, unknown conditional: 0, unknown unconditional: 296] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 81 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 26 TransitionsAfterwards, 1596 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 52 TotalNumberOfCompositions, 4968 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1803, independent: 1595, independent conditional: 0, independent unconditional: 1595, dependent: 208, dependent conditional: 0, dependent unconditional: 208, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 729, independent: 690, independent conditional: 0, independent unconditional: 690, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1803, independent: 905, independent conditional: 0, independent unconditional: 905, dependent: 169, dependent conditional: 0, dependent unconditional: 169, unknown: 729, unknown conditional: 0, unknown unconditional: 729] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 86 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 101 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 225 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 390 IncrementalHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 9 mSDtfsCounter, 390 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=5, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 29/37 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:02:30,574 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...