/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_31-traces-mine-vs-mutex_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:01:38,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:01:38,388 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:01:38,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:01:38,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:01:38,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:01:38,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:01:38,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:01:38,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:01:38,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:01:38,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:01:38,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:01:38,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:01:38,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:01:38,413 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:01:38,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:01:38,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:01:38,414 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:01:38,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:01:38,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:01:38,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:01:38,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:01:38,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:01:38,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:01:38,416 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:01:38,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:01:38,417 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:01:38,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:01:38,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:01:38,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:01:38,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:38,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:01:38,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:01:38,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:01:38,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:01:38,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:01:38,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:01:38,420 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:01:38,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:01:38,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:01:38,421 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:01:38,421 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:01:38,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:01:38,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:01:38,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:01:38,664 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:01:38,665 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:01:38,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_31-traces-mine-vs-mutex_true_bound2.i [2023-08-03 16:01:39,804 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:01:40,046 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:01:40,047 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_31-traces-mine-vs-mutex_true_bound2.i [2023-08-03 16:01:40,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d55a383b/ee360d9dca374f83bfcbc7aa248ec7fc/FLAG276145050 [2023-08-03 16:01:40,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d55a383b/ee360d9dca374f83bfcbc7aa248ec7fc [2023-08-03 16:01:40,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:01:40,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:01:40,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:40,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:01:40,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:01:40,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bec1c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40, skipping insertion in model container [2023-08-03 16:01:40,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,119 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:01:40,233 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_31-traces-mine-vs-mutex_true_bound2.i[1097,1110] [2023-08-03 16:01:40,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:40,381 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:01:40,393 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_31-traces-mine-vs-mutex_true_bound2.i[1097,1110] [2023-08-03 16:01:40,412 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:01:40,414 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:01:40,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:40,471 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:01:40,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40 WrapperNode [2023-08-03 16:01:40,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:40,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:40,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:01:40,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:01:40,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,522 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-08-03 16:01:40,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:40,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:01:40,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:01:40,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:01:40,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:01:40,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:01:40,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:01:40,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:01:40,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (1/1) ... [2023-08-03 16:01:40,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:40,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:40,574 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 16:01:40,580 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 16:01:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:01:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:01:40,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:01:40,604 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 16:01:40,700 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:01:40,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:01:40,836 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:01:40,842 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:01:40,842 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 16:01:40,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:40 BoogieIcfgContainer [2023-08-03 16:01:40,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:01:40,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:01:40,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:01:40,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:01:40,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:01:40" (1/3) ... [2023-08-03 16:01:40,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5c1d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:40, skipping insertion in model container [2023-08-03 16:01:40,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:40" (2/3) ... [2023-08-03 16:01:40,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5c1d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:40, skipping insertion in model container [2023-08-03 16:01:40,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:40" (3/3) ... [2023-08-03 16:01:40,852 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_31-traces-mine-vs-mutex_true_bound2.i [2023-08-03 16:01:40,858 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:01:40,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:01:40,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:01:40,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:01:40,931 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 16:01:40,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 89 transitions, 186 flow [2023-08-03 16:01:41,049 INFO L124 PetriNetUnfolderBase]: 7/122 cut-off events. [2023-08-03 16:01:41,049 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:01:41,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 122 events. 7/122 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2023-08-03 16:01:41,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 89 transitions, 186 flow [2023-08-03 16:01:41,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 69 transitions, 143 flow [2023-08-03 16:01:41,064 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:41,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 69 transitions, 143 flow [2023-08-03 16:01:41,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 69 transitions, 143 flow [2023-08-03 16:01:41,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 69 transitions, 143 flow [2023-08-03 16:01:41,123 INFO L124 PetriNetUnfolderBase]: 2/87 cut-off events. [2023-08-03 16:01:41,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:41,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-03 16:01:41,125 INFO L119 LiptonReduction]: Number of co-enabled transitions 864 [2023-08-03 16:01:43,101 INFO L134 LiptonReduction]: Checked pairs total: 1922 [2023-08-03 16:01:43,101 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-03 16:01:43,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:43,137 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;@3feb5107, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:43,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:01:43,141 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:43,142 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 16:01:43,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:43,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:43,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:01:43,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:43,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:43,147 INFO L85 PathProgramCache]: Analyzing trace with hash 352404881, now seen corresponding path program 1 times [2023-08-03 16:01:43,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936687514] [2023-08-03 16:01:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:43,389 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 16:01:43,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:43,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936687514] [2023-08-03 16:01:43,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936687514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:43,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:43,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:01:43,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450070981] [2023-08-03 16:01:43,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:43,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:43,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 141 [2023-08-03 16:01:43,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 16:01:43,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:43,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 141 [2023-08-03 16:01:43,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:43,501 INFO L124 PetriNetUnfolderBase]: 42/109 cut-off events. [2023-08-03 16:01:43,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:43,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 109 events. 42/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 331 event pairs, 20 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 199. Up to 91 conditions per place. [2023-08-03 16:01:43,503 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 21 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-03 16:01:43,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 26 transitions, 103 flow [2023-08-03 16:01:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-08-03 16:01:43,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2023-08-03 16:01:43,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-08-03 16:01:43,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-08-03 16:01:43,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:43,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-08-03 16:01:43,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 16:01:43,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 16:01:43,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 16:01:43,527 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 41 flow. Second operand 3 states and 261 transitions. [2023-08-03 16:01:43,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 26 transitions, 103 flow [2023-08-03 16:01:43,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:43,530 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 49 flow [2023-08-03 16:01:43,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-08-03 16:01:43,534 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2023-08-03 16:01:43,534 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 49 flow [2023-08-03 16:01:43,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 16:01:43,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:43,535 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:01:43,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:01:43,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:43,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash 368573626, now seen corresponding path program 1 times [2023-08-03 16:01:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851285012] [2023-08-03 16:01:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:43,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:43,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:01:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:43,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:01:43,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:01:43,603 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:01:43,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:01:43,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:01:43,605 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:01:43,608 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:01:43,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:01:43,631 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 16:01:43,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 109 transitions, 236 flow [2023-08-03 16:01:43,656 INFO L124 PetriNetUnfolderBase]: 13/199 cut-off events. [2023-08-03 16:01:43,657 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:01:43,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 199 events. 13/199 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 487 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-03 16:01:43,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 109 transitions, 236 flow [2023-08-03 16:01:43,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 88 transitions, 188 flow [2023-08-03 16:01:43,659 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:43,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 88 transitions, 188 flow [2023-08-03 16:01:43,659 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 88 transitions, 188 flow [2023-08-03 16:01:43,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 88 transitions, 188 flow [2023-08-03 16:01:43,672 INFO L124 PetriNetUnfolderBase]: 3/129 cut-off events. [2023-08-03 16:01:43,672 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:01:43,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 129 events. 3/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-08-03 16:01:43,675 INFO L119 LiptonReduction]: Number of co-enabled transitions 2412 [2023-08-03 16:01:45,451 INFO L134 LiptonReduction]: Checked pairs total: 7939 [2023-08-03 16:01:45,451 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-08-03 16:01:45,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:45,454 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;@3feb5107, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:45,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:01:45,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:45,456 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-03 16:01:45,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:45,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:45,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 16:01:45,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:45,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:45,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1561205084, now seen corresponding path program 1 times [2023-08-03 16:01:45,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:45,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707249399] [2023-08-03 16:01:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:45,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:45,494 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 16:01:45,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:45,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707249399] [2023-08-03 16:01:45,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707249399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:45,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:45,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:01:45,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113723161] [2023-08-03 16:01:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:45,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:45,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:45,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:45,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:45,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2023-08-03 16:01:45,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 16:01:45,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:45,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2023-08-03 16:01:45,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:45,639 INFO L124 PetriNetUnfolderBase]: 770/1480 cut-off events. [2023-08-03 16:01:45,640 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-03 16:01:45,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 1480 events. 770/1480 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8516 event pairs, 336 based on Foata normal form. 0/1400 useless extension candidates. Maximal degree in co-relation 330. Up to 1267 conditions per place. [2023-08-03 16:01:45,649 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 30 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-03 16:01:45,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 158 flow [2023-08-03 16:01:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-08-03 16:01:45,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2023-08-03 16:01:45,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-08-03 16:01:45,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-08-03 16:01:45,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:45,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-08-03 16:01:45,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 16:01:45,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 16:01:45,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 16:01:45,656 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 324 transitions. [2023-08-03 16:01:45,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 158 flow [2023-08-03 16:01:45,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 156 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:45,657 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 86 flow [2023-08-03 16:01:45,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-03 16:01:45,658 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-03 16:01:45,658 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 86 flow [2023-08-03 16:01:45,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 16:01:45,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:45,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:45,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:01:45,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:45,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:45,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1078279003, now seen corresponding path program 1 times [2023-08-03 16:01:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:45,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711337974] [2023-08-03 16:01:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:45,708 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 16:01:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711337974] [2023-08-03 16:01:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711337974] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:01:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071177435] [2023-08-03 16:01:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:45,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:45,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:45,721 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 16:01:45,749 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 16:01:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:45,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:01:45,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:01:45,847 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 16:01:45,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:01:45,865 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 16:01:45,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071177435] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:01:45,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:01:45,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:01:45,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440727180] [2023-08-03 16:01:45,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:01:45,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:45,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:45,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 166 [2023-08-03 16:01:45,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 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 16:01:45,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:45,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 166 [2023-08-03 16:01:45,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:46,062 INFO L124 PetriNetUnfolderBase]: 742/1348 cut-off events. [2023-08-03 16:01:46,063 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 16:01:46,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 1348 events. 742/1348 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7296 event pairs, 56 based on Foata normal form. 8/1356 useless extension candidates. Maximal degree in co-relation 351. Up to 881 conditions per place. [2023-08-03 16:01:46,071 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 43 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-03 16:01:46,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 226 flow [2023-08-03 16:01:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2023-08-03 16:01:46,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2023-08-03 16:01:46,074 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 432 transitions. [2023-08-03 16:01:46,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 432 transitions. [2023-08-03 16:01:46,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:46,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 432 transitions. [2023-08-03 16:01:46,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 16:01:46,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 16:01:46,078 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 16:01:46,078 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 86 flow. Second operand 4 states and 432 transitions. [2023-08-03 16:01:46,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 226 flow [2023-08-03 16:01:46,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:46,082 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 104 flow [2023-08-03 16:01:46,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 16:01:46,085 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-08-03 16:01:46,085 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 104 flow [2023-08-03 16:01:46,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 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 16:01:46,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:46,086 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:01:46,092 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 16:01:46,291 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 16:01:46,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:46,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash -509357131, now seen corresponding path program 1 times [2023-08-03 16:01:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:46,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125256957] [2023-08-03 16:01:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:46,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:46,349 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 16:01:46,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:46,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125256957] [2023-08-03 16:01:46,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125256957] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:01:46,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956465293] [2023-08-03 16:01:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:46,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:46,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:46,352 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 16:01:46,373 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 16:01:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:46,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:01:46,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:01:46,441 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 16:01:46,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:01:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956465293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:46,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:01:46,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:01:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351340517] [2023-08-03 16:01:46,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:46,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:46,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:46,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:46,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 166 [2023-08-03 16:01:46,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 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 16:01:46,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:46,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 166 [2023-08-03 16:01:46,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:46,600 INFO L124 PetriNetUnfolderBase]: 630/1140 cut-off events. [2023-08-03 16:01:46,600 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2023-08-03 16:01:46,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 1140 events. 630/1140 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5940 event pairs, 0 based on Foata normal form. 64/1204 useless extension candidates. Maximal degree in co-relation 313. Up to 880 conditions per place. [2023-08-03 16:01:46,607 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 43 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-03 16:01:46,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 232 flow [2023-08-03 16:01:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:01:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:01:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2023-08-03 16:01:46,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349397590361445 [2023-08-03 16:01:46,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2023-08-03 16:01:46,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2023-08-03 16:01:46,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:46,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2023-08-03 16:01:46,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 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 16:01:46,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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 16:01:46,613 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 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 16:01:46,613 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 104 flow. Second operand 5 states and 527 transitions. [2023-08-03 16:01:46,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 232 flow [2023-08-03 16:01:46,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 225 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:46,617 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 93 flow [2023-08-03 16:01:46,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-03 16:01:46,618 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-08-03 16:01:46,618 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 93 flow [2023-08-03 16:01:46,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 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 16:01:46,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:46,619 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:46,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 16:01:46,825 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 16:01:46,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:46,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash -152145223, now seen corresponding path program 1 times [2023-08-03 16:01:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:46,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040680863] [2023-08-03 16:01:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:46,892 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 16:01:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040680863] [2023-08-03 16:01:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040680863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:46,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:46,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:01:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336316008] [2023-08-03 16:01:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:46,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:46,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 166 [2023-08-03 16:01:46,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 16:01:46,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:46,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 166 [2023-08-03 16:01:46,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:47,059 INFO L124 PetriNetUnfolderBase]: 869/1534 cut-off events. [2023-08-03 16:01:47,059 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2023-08-03 16:01:47,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 1534 events. 869/1534 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7791 event pairs, 324 based on Foata normal form. 16/1549 useless extension candidates. Maximal degree in co-relation 2139. Up to 1215 conditions per place. [2023-08-03 16:01:47,068 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 39 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-03 16:01:47,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 228 flow [2023-08-03 16:01:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-03 16:01:47,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6606425702811245 [2023-08-03 16:01:47,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-03 16:01:47,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-03 16:01:47,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:47,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-03 16:01:47,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 16:01:47,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 16:01:47,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 16:01:47,072 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 93 flow. Second operand 3 states and 329 transitions. [2023-08-03 16:01:47,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 228 flow [2023-08-03 16:01:47,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:47,074 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 107 flow [2023-08-03 16:01:47,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 16:01:47,074 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-08-03 16:01:47,075 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 107 flow [2023-08-03 16:01:47,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 16:01:47,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:47,075 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:47,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:01:47,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:47,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1122946837, now seen corresponding path program 1 times [2023-08-03 16:01:47,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:47,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063415968] [2023-08-03 16:01:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:47,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:47,144 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 16:01:47,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063415968] [2023-08-03 16:01:47,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063415968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:47,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:47,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:01:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594811034] [2023-08-03 16:01:47,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:47,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:47,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 166 [2023-08-03 16:01:47,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 16:01:47,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:47,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 166 [2023-08-03 16:01:47,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:47,292 INFO L124 PetriNetUnfolderBase]: 425/963 cut-off events. [2023-08-03 16:01:47,292 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2023-08-03 16:01:47,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 963 events. 425/963 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5252 event pairs, 204 based on Foata normal form. 200/1161 useless extension candidates. Maximal degree in co-relation 1232. Up to 443 conditions per place. [2023-08-03 16:01:47,302 INFO L140 encePairwiseOnDemand]: 153/166 looper letters, 33 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2023-08-03 16:01:47,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 253 flow [2023-08-03 16:01:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-03 16:01:47,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124497991967871 [2023-08-03 16:01:47,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-03 16:01:47,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-03 16:01:47,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:47,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-03 16:01:47,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:47,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 16:01:47,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 16:01:47,307 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 107 flow. Second operand 3 states and 305 transitions. [2023-08-03 16:01:47,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 253 flow [2023-08-03 16:01:47,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:47,309 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 171 flow [2023-08-03 16:01:47,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-03 16:01:47,310 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-03 16:01:47,310 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 171 flow [2023-08-03 16:01:47,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 16:01:47,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:47,311 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:47,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:01:47,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:47,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1136662859, now seen corresponding path program 1 times [2023-08-03 16:01:47,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:47,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440685714] [2023-08-03 16:01:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:47,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:47,509 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 16:01:47,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:47,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440685714] [2023-08-03 16:01:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440685714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:47,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:01:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120863617] [2023-08-03 16:01:47,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:01:47,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:47,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:01:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:01:47,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 166 [2023-08-03 16:01:47,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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 16:01:47,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:47,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 166 [2023-08-03 16:01:47,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:47,631 INFO L124 PetriNetUnfolderBase]: 90/305 cut-off events. [2023-08-03 16:01:47,631 INFO L125 PetriNetUnfolderBase]: For 273/277 co-relation queries the response was YES. [2023-08-03 16:01:47,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 305 events. 90/305 cut-off events. For 273/277 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1364 event pairs, 13 based on Foata normal form. 80/385 useless extension candidates. Maximal degree in co-relation 560. Up to 200 conditions per place. [2023-08-03 16:01:47,633 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 29 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2023-08-03 16:01:47,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 285 flow [2023-08-03 16:01:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:47,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2023-08-03 16:01:47,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6069277108433735 [2023-08-03 16:01:47,635 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2023-08-03 16:01:47,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2023-08-03 16:01:47,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:47,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2023-08-03 16:01:47,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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 16:01:47,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 16:01:47,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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 16:01:47,637 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 171 flow. Second operand 4 states and 403 transitions. [2023-08-03 16:01:47,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 285 flow [2023-08-03 16:01:47,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:47,639 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 174 flow [2023-08-03 16:01:47,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-08-03 16:01:47,640 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-03 16:01:47,640 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 174 flow [2023-08-03 16:01:47,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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 16:01:47,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:47,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:47,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:01:47,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:47,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1243885291, now seen corresponding path program 1 times [2023-08-03 16:01:47,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:47,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471176911] [2023-08-03 16:01:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:47,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:47,764 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 16:01:47,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:47,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471176911] [2023-08-03 16:01:47,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471176911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:47,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:47,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:47,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836336283] [2023-08-03 16:01:47,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:47,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:01:47,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:47,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:01:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:47,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 166 [2023-08-03 16:01:47,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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 16:01:47,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:47,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 166 [2023-08-03 16:01:47,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:47,920 INFO L124 PetriNetUnfolderBase]: 108/326 cut-off events. [2023-08-03 16:01:47,920 INFO L125 PetriNetUnfolderBase]: For 256/257 co-relation queries the response was YES. [2023-08-03 16:01:47,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 326 events. 108/326 cut-off events. For 256/257 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1408 event pairs, 38 based on Foata normal form. 2/327 useless extension candidates. Maximal degree in co-relation 495. Up to 152 conditions per place. [2023-08-03 16:01:47,922 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 59 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2023-08-03 16:01:47,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 73 transitions, 470 flow [2023-08-03 16:01:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 16:01:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 16:01:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 699 transitions. [2023-08-03 16:01:47,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015490533562823 [2023-08-03 16:01:47,924 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 699 transitions. [2023-08-03 16:01:47,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 699 transitions. [2023-08-03 16:01:47,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:47,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 699 transitions. [2023-08-03 16:01:47,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 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 16:01:47,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 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 16:01:47,928 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 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 16:01:47,928 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 174 flow. Second operand 7 states and 699 transitions. [2023-08-03 16:01:47,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 73 transitions, 470 flow [2023-08-03 16:01:47,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 73 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:01:47,930 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 213 flow [2023-08-03 16:01:47,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=213, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-03 16:01:47,931 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2023-08-03 16:01:47,931 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 213 flow [2023-08-03 16:01:47,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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 16:01:47,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:47,932 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:47,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 16:01:47,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:47,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash 419679432, now seen corresponding path program 1 times [2023-08-03 16:01:47,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172410990] [2023-08-03 16:01:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:47,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:48,043 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 16:01:48,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172410990] [2023-08-03 16:01:48,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172410990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:48,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:48,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:48,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90520207] [2023-08-03 16:01:48,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:48,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:01:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:01:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:48,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 166 [2023-08-03 16:01:48,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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 16:01:48,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:48,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 166 [2023-08-03 16:01:48,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:48,209 INFO L124 PetriNetUnfolderBase]: 102/319 cut-off events. [2023-08-03 16:01:48,209 INFO L125 PetriNetUnfolderBase]: For 289/289 co-relation queries the response was YES. [2023-08-03 16:01:48,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 319 events. 102/319 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1369 event pairs, 34 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 601. Up to 170 conditions per place. [2023-08-03 16:01:48,211 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 52 selfloop transitions, 9 changer transitions 1/69 dead transitions. [2023-08-03 16:01:48,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 451 flow [2023-08-03 16:01:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 16:01:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 16:01:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 785 transitions. [2023-08-03 16:01:48,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911144578313253 [2023-08-03 16:01:48,214 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 785 transitions. [2023-08-03 16:01:48,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 785 transitions. [2023-08-03 16:01:48,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:48,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 785 transitions. [2023-08-03 16:01:48,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.125) internal successors, (785), 8 states have internal predecessors, (785), 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 16:01:48,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 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 16:01:48,218 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 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 16:01:48,218 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 213 flow. Second operand 8 states and 785 transitions. [2023-08-03 16:01:48,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 451 flow [2023-08-03 16:01:48,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:48,221 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 267 flow [2023-08-03 16:01:48,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=267, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-08-03 16:01:48,222 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2023-08-03 16:01:48,222 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 267 flow [2023-08-03 16:01:48,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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 16:01:48,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:48,222 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:48,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:01:48,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:48,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash -297169550, now seen corresponding path program 1 times [2023-08-03 16:01:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:48,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718241227] [2023-08-03 16:01:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:48,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:48,493 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 16:01:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718241227] [2023-08-03 16:01:48,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718241227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:48,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:48,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 16:01:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661024945] [2023-08-03 16:01:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:48,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 16:01:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 16:01:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-03 16:01:48,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 166 [2023-08-03 16:01:48,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 91.375) internal successors, (731), 8 states have internal predecessors, (731), 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 16:01:48,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:48,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 166 [2023-08-03 16:01:48,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:48,774 INFO L124 PetriNetUnfolderBase]: 108/324 cut-off events. [2023-08-03 16:01:48,774 INFO L125 PetriNetUnfolderBase]: For 328/329 co-relation queries the response was YES. [2023-08-03 16:01:48,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 324 events. 108/324 cut-off events. For 328/329 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1401 event pairs, 42 based on Foata normal form. 2/325 useless extension candidates. Maximal degree in co-relation 758. Up to 150 conditions per place. [2023-08-03 16:01:48,775 INFO L140 encePairwiseOnDemand]: 153/166 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-08-03 16:01:48,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 563 flow [2023-08-03 16:01:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 16:01:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 16:01:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1020 transitions. [2023-08-03 16:01:48,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585980284775466 [2023-08-03 16:01:48,779 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1020 transitions. [2023-08-03 16:01:48,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1020 transitions. [2023-08-03 16:01:48,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:48,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1020 transitions. [2023-08-03 16:01:48,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.72727272727273) internal successors, (1020), 11 states have internal predecessors, (1020), 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 16:01:48,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 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 16:01:48,787 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 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 16:01:48,787 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 267 flow. Second operand 11 states and 1020 transitions. [2023-08-03 16:01:48,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 563 flow [2023-08-03 16:01:48,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:01:48,791 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-08-03 16:01:48,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-08-03 16:01:48,791 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2023-08-03 16:01:48,792 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-08-03 16:01:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.375) internal successors, (731), 8 states have internal predecessors, (731), 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 16:01:48,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:01:48,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:01:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 16:01:48,793 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:48,795 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:01:48,795 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:01:48,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:01:48 BasicIcfg [2023-08-03 16:01:48,810 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:01:48,810 INFO L158 Benchmark]: Toolchain (without parser) took 8733.10ms. Allocated memory was 528.5MB in the beginning and 635.4MB in the end (delta: 107.0MB). Free memory was 477.8MB in the beginning and 513.4MB in the end (delta: -35.6MB). Peak memory consumption was 74.5MB. Max. memory is 16.0GB. [2023-08-03 16:01:48,811 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 348.1MB. Free memory is still 297.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:01:48,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.41ms. Allocated memory is still 528.5MB. Free memory was 477.4MB in the beginning and 458.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:01:48,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.39ms. Allocated memory is still 528.5MB. Free memory was 458.2MB in the beginning and 456.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:01:48,811 INFO L158 Benchmark]: Boogie Preprocessor took 21.73ms. Allocated memory is still 528.5MB. Free memory was 456.1MB in the beginning and 454.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:01:48,812 INFO L158 Benchmark]: RCFGBuilder took 298.27ms. Allocated memory is still 528.5MB. Free memory was 454.7MB in the beginning and 440.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 16:01:48,812 INFO L158 Benchmark]: TraceAbstraction took 7963.64ms. Allocated memory was 528.5MB in the beginning and 635.4MB in the end (delta: 107.0MB). Free memory was 440.0MB in the beginning and 513.4MB in the end (delta: -73.4MB). Peak memory consumption was 36.7MB. Max. memory is 16.0GB. [2023-08-03 16:01:48,814 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 348.1MB. Free memory is still 297.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 395.41ms. Allocated memory is still 528.5MB. Free memory was 477.4MB in the beginning and 458.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.39ms. Allocated memory is still 528.5MB. Free memory was 458.2MB in the beginning and 456.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.73ms. Allocated memory is still 528.5MB. Free memory was 456.1MB in the beginning and 454.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 298.27ms. Allocated memory is still 528.5MB. Free memory was 454.7MB in the beginning and 440.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 7963.64ms. Allocated memory was 528.5MB in the beginning and 635.4MB in the end (delta: 107.0MB). Free memory was 440.0MB in the beginning and 513.4MB in the end (delta: -73.4MB). Peak memory consumption was 36.7MB. 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: 2.0s, 71 PlacesBefore, 21 PlacesAfterwards, 69 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 52 TotalNumberOfCompositions, 1922 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1038, independent: 902, independent conditional: 0, independent unconditional: 902, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 441, independent: 416, independent conditional: 0, independent unconditional: 416, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1038, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 441, unknown conditional: 0, unknown unconditional: 441] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 92 PlacesBefore, 37 PlacesAfterwards, 88 TransitionsBefore, 32 TransitionsAfterwards, 2412 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 7939 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2563, independent: 2281, independent conditional: 0, independent unconditional: 2281, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1074, independent: 1035, independent conditional: 0, independent unconditional: 1035, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2563, independent: 1246, independent conditional: 0, independent unconditional: 1246, dependent: 243, dependent conditional: 0, dependent unconditional: 243, unknown: 1074, unknown conditional: 0, unknown unconditional: 1074] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, 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, 105 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: 2.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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, 124 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: 5.2s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 466 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1235 IncrementalHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 11 mSDtfsCounter, 1235 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=267occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 657 SizeOfPredicates, 0 NumberOfNonLiveVariables, 241 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 47/55 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 16:01:48,845 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...