/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_31-traces-mine-vs-mutex_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:32:35,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:32:35,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:32:35,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:32:35,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:32:35,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:32:35,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:32:35,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:32:35,315 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:32:35,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:32:35,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:32:35,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:32:35,320 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:32:35,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:32:35,321 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:32:35,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:32:35,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:32:35,322 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:32:35,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:32:35,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:32:35,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:32:35,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:32:35,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:32:35,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:32:35,330 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:32:35,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:32:35,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:32:35,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:32:35,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:32:35,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:32:35,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:32:35,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:32:35,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:32:35,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:32:35,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:32:35,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:32:35,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:32:35,334 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:32:35,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:32:35,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:32:35,334 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:32:35,337 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:32:35,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:32:35,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:32:35,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:32:35,576 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:32:35,576 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:32:35,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_31-traces-mine-vs-mutex_true_bound2.i [2023-08-04 04:32:36,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:32:37,069 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:32:37,070 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_31-traces-mine-vs-mutex_true_bound2.i [2023-08-04 04:32:37,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/130e0ca20/409247fc1ba4498e8685c8a699edca95/FLAG6cfb4bba9 [2023-08-04 04:32:37,103 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/130e0ca20/409247fc1ba4498e8685c8a699edca95 [2023-08-04 04:32:37,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:32:37,107 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:32:37,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:32:37,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:32:37,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:32:37,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67481814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37, skipping insertion in model container [2023-08-04 04:32:37,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,153 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:32:37,300 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] [2023-08-04 04:32:37,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:32:37,472 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:32:37,484 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] [2023-08-04 04:32:37,500 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-04 04:32:37,506 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:32:37,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:32:37,561 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:32:37,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37 WrapperNode [2023-08-04 04:32:37,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:32:37,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:32:37,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:32:37,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:32:37,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,611 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-08-04 04:32:37,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:32:37,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:32:37,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:32:37,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:32:37,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,627 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:32:37,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:32:37,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:32:37,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:32:37,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (1/1) ... [2023-08-04 04:32:37,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:32:37,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:37,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:32:37,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:32:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:32:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:32:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:32:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:32:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:32:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:32:37,697 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:32:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:32:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:32:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:32:37,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:32:37,698 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:32:37,804 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:32:37,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:32:38,044 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:32:38,050 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:32:38,050 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:32:38,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:32:38 BoogieIcfgContainer [2023-08-04 04:32:38,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:32:38,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:32:38,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:32:38,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:32:38,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:32:37" (1/3) ... [2023-08-04 04:32:38,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f72092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:32:38, skipping insertion in model container [2023-08-04 04:32:38,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:37" (2/3) ... [2023-08-04 04:32:38,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f72092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:32:38, skipping insertion in model container [2023-08-04 04:32:38,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:32:38" (3/3) ... [2023-08-04 04:32:38,061 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_31-traces-mine-vs-mutex_true_bound2.i [2023-08-04 04:32:38,069 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:32:38,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:32:38,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:32:38,081 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:32:38,120 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:32:38,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 89 transitions, 186 flow [2023-08-04 04:32:38,206 INFO L124 PetriNetUnfolderBase]: 7/122 cut-off events. [2023-08-04 04:32:38,206 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:32:38,210 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. [2023-08-04 04:32:38,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 89 transitions, 186 flow [2023-08-04 04:32:38,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 139 flow [2023-08-04 04:32:38,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:38,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 68 transitions, 139 flow [2023-08-04 04:32:38,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 68 transitions, 139 flow [2023-08-04 04:32:38,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 139 flow [2023-08-04 04:32:38,246 INFO L124 PetriNetUnfolderBase]: 2/86 cut-off events. [2023-08-04 04:32:38,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:38,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-04 04:32:38,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 828 [2023-08-04 04:32:40,143 INFO L134 LiptonReduction]: Checked pairs total: 1784 [2023-08-04 04:32:40,143 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-04 04:32:40,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:32:40,159 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;@2435d7fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:40,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:40,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:40,163 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 04:32:40,163 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:40,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:40,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:32:40,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:40,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:40,169 INFO L85 PathProgramCache]: Analyzing trace with hash 352404881, now seen corresponding path program 1 times [2023-08-04 04:32:40,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:40,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240442630] [2023-08-04 04:32:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:40,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:40,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240442630] [2023-08-04 04:32:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240442630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:40,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:40,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:32:40,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571904804] [2023-08-04 04:32:40,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:40,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:40,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:40,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:40,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:40,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 141 [2023-08-04 04:32:40,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 37 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) [2023-08-04 04:32:40,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:40,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 141 [2023-08-04 04:32:40,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:40,538 INFO L124 PetriNetUnfolderBase]: 42/105 cut-off events. [2023-08-04 04:32:40,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:40,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 105 events. 42/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 309 event pairs, 20 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 199. Up to 91 conditions per place. [2023-08-04 04:32:40,540 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 20 selfloop transitions, 2 changer transitions 1/25 dead transitions. [2023-08-04 04:32:40,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 25 transitions, 99 flow [2023-08-04 04:32:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-08-04 04:32:40,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2023-08-04 04:32:40,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-08-04 04:32:40,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-08-04 04:32:40,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:40,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-08-04 04:32:40,557 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) [2023-08-04 04:32:40,561 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) [2023-08-04 04:32:40,561 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) [2023-08-04 04:32:40,563 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 37 flow. Second operand 3 states and 261 transitions. [2023-08-04 04:32:40,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 25 transitions, 99 flow [2023-08-04 04:32:40,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:40,566 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 45 flow [2023-08-04 04:32:40,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2023-08-04 04:32:40,570 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-04 04:32:40,570 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 45 flow [2023-08-04 04:32:40,570 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) [2023-08-04 04:32:40,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:40,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:32:40,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:40,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1203752587, now seen corresponding path program 1 times [2023-08-04 04:32:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:40,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056760763] [2023-08-04 04:32:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:40,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:40,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:40,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056760763] [2023-08-04 04:32:40,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056760763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:40,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456449078] [2023-08-04 04:32:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:40,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:40,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:40,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:40,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:32:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:40,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:32:40,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:40,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:32:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456449078] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:32:40,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:32:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:32:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827580118] [2023-08-04 04:32:40,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:32:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:40,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 141 [2023-08-04 04:32:40,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:40,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:40,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 141 [2023-08-04 04:32:40,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:40,936 INFO L124 PetriNetUnfolderBase]: 14/41 cut-off events. [2023-08-04 04:32:40,936 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-04 04:32:40,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 41 events. 14/41 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 4 based on Foata normal form. 8/49 useless extension candidates. Maximal degree in co-relation 91. Up to 30 conditions per place. [2023-08-04 04:32:40,937 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-04 04:32:40,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 87 flow [2023-08-04 04:32:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:40,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-04 04:32:40,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2023-08-04 04:32:40,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-04 04:32:40,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-04 04:32:40,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:40,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-04 04:32:40,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:40,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:40,956 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:40,956 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 45 flow. Second operand 4 states and 332 transitions. [2023-08-04 04:32:40,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 87 flow [2023-08-04 04:32:40,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 20 transitions, 81 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:32:40,957 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 04:32:40,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 04:32:40,958 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-04 04:32:40,958 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 04:32:40,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:40,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:32:40,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 04:32:41,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:41,169 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:32:41,171 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 04:32:41,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 89 transitions, 186 flow [2023-08-04 04:32:41,188 INFO L124 PetriNetUnfolderBase]: 7/122 cut-off events. [2023-08-04 04:32:41,188 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:32:41,189 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. [2023-08-04 04:32:41,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 89 transitions, 186 flow [2023-08-04 04:32:41,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 55 transitions, 115 flow [2023-08-04 04:32:41,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:41,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 55 transitions, 115 flow [2023-08-04 04:32:41,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 55 transitions, 115 flow [2023-08-04 04:32:41,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 55 transitions, 115 flow [2023-08-04 04:32:41,196 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2023-08-04 04:32:41,196 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:41,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 59 events. 0/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-04 04:32:41,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2023-08-04 04:32:43,416 INFO L134 LiptonReduction]: Checked pairs total: 284 [2023-08-04 04:32:43,416 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-08-04 04:32:43,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:32:43,419 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;@2435d7fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:43,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:43,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:43,421 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-04 04:32:43,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:43,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:43,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:32:43,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:32:43,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash 10827217, now seen corresponding path program 1 times [2023-08-04 04:32:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:43,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629068955] [2023-08-04 04:32:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:32:43,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:32:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:32:43,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:32:43,466 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:32:43,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:32:43,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:32:43,467 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:32:43,467 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:32:43,468 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:32:43,468 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:32:43,483 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:32:43,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 109 transitions, 236 flow [2023-08-04 04:32:43,503 INFO L124 PetriNetUnfolderBase]: 13/199 cut-off events. [2023-08-04 04:32:43,503 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:32:43,504 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. [2023-08-04 04:32:43,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 109 transitions, 236 flow [2023-08-04 04:32:43,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 87 transitions, 182 flow [2023-08-04 04:32:43,505 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:43,505 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 87 transitions, 182 flow [2023-08-04 04:32:43,505 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 87 transitions, 182 flow [2023-08-04 04:32:43,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 87 transitions, 182 flow [2023-08-04 04:32:43,517 INFO L124 PetriNetUnfolderBase]: 3/128 cut-off events. [2023-08-04 04:32:43,517 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:32:43,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 128 events. 3/128 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 234 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-08-04 04:32:43,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 2340 [2023-08-04 04:32:45,170 INFO L134 LiptonReduction]: Checked pairs total: 6660 [2023-08-04 04:32:45,170 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-08-04 04:32:45,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:32:45,173 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;@2435d7fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:45,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:45,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:45,175 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-04 04:32:45,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:45,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:45,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:32:45,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:45,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1165839042, now seen corresponding path program 1 times [2023-08-04 04:32:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381782148] [2023-08-04 04:32:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:45,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:45,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:45,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381782148] [2023-08-04 04:32:45,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381782148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:45,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:45,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:32:45,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931129961] [2023-08-04 04:32:45,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:45,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:45,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2023-08-04 04:32:45,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 70 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) [2023-08-04 04:32:45,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:45,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2023-08-04 04:32:45,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:45,412 INFO L124 PetriNetUnfolderBase]: 770/1472 cut-off events. [2023-08-04 04:32:45,413 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:32:45,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2778 conditions, 1472 events. 770/1472 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8431 event pairs, 336 based on Foata normal form. 0/1392 useless extension candidates. Maximal degree in co-relation 330. Up to 1267 conditions per place. [2023-08-04 04:32:45,422 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 30 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-04 04:32:45,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 152 flow [2023-08-04 04:32:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-08-04 04:32:45,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2023-08-04 04:32:45,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-08-04 04:32:45,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-08-04 04:32:45,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:45,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-08-04 04:32:45,426 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) [2023-08-04 04:32:45,427 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) [2023-08-04 04:32:45,427 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) [2023-08-04 04:32:45,428 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 70 flow. Second operand 3 states and 324 transitions. [2023-08-04 04:32:45,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 152 flow [2023-08-04 04:32:45,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:45,429 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 82 flow [2023-08-04 04:32:45,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-04 04:32:45,430 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-08-04 04:32:45,430 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 82 flow [2023-08-04 04:32:45,431 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) [2023-08-04 04:32:45,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:45,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:45,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:32:45,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:45,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:45,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1033337635, now seen corresponding path program 1 times [2023-08-04 04:32:45,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:45,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114466278] [2023-08-04 04:32:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:45,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:45,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:45,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114466278] [2023-08-04 04:32:45,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114466278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:45,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829377718] [2023-08-04 04:32:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:45,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:45,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:45,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:45,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:32:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:45,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:32:45,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:45,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:32:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:45,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829377718] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:32:45,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:32:45,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:32:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807716311] [2023-08-04 04:32:45,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:32:45,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:45,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 166 [2023-08-04 04:32:45,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 82 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) [2023-08-04 04:32:45,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:45,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 166 [2023-08-04 04:32:45,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:45,758 INFO L124 PetriNetUnfolderBase]: 742/1340 cut-off events. [2023-08-04 04:32:45,759 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 04:32:45,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733 conditions, 1340 events. 742/1340 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7216 event pairs, 56 based on Foata normal form. 8/1348 useless extension candidates. Maximal degree in co-relation 349. Up to 881 conditions per place. [2023-08-04 04:32:45,767 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 43 selfloop transitions, 3 changer transitions 1/55 dead transitions. [2023-08-04 04:32:45,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 222 flow [2023-08-04 04:32:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2023-08-04 04:32:45,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2023-08-04 04:32:45,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 432 transitions. [2023-08-04 04:32:45,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 432 transitions. [2023-08-04 04:32:45,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:45,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 432 transitions. [2023-08-04 04:32:45,771 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) [2023-08-04 04:32:45,772 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) [2023-08-04 04:32:45,773 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) [2023-08-04 04:32:45,773 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 82 flow. Second operand 4 states and 432 transitions. [2023-08-04 04:32:45,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 222 flow [2023-08-04 04:32:45,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:45,781 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 94 flow [2023-08-04 04:32:45,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-04 04:32:45,789 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-04 04:32:45,789 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 94 flow [2023-08-04 04:32:45,790 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) [2023-08-04 04:32:45,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:45,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:45,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:45,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:45,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:45,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash 628136411, now seen corresponding path program 1 times [2023-08-04 04:32:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:45,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789919280] [2023-08-04 04:32:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:46,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:46,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789919280] [2023-08-04 04:32:46,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789919280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:46,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:46,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:32:46,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135417972] [2023-08-04 04:32:46,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:46,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:46,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:46,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 166 [2023-08-04 04:32:46,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 94 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) [2023-08-04 04:32:46,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:46,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 166 [2023-08-04 04:32:46,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:46,217 INFO L124 PetriNetUnfolderBase]: 869/1534 cut-off events. [2023-08-04 04:32:46,218 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2023-08-04 04:32:46,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 1534 events. 869/1534 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7793 event pairs, 324 based on Foata normal form. 16/1549 useless extension candidates. Maximal degree in co-relation 2199. Up to 1215 conditions per place. [2023-08-04 04:32:46,226 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 39 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-04 04:32:46,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 230 flow [2023-08-04 04:32:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-04 04:32:46,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6606425702811245 [2023-08-04 04:32:46,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-04 04:32:46,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-04 04:32:46,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:46,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-04 04:32:46,229 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) [2023-08-04 04:32:46,230 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) [2023-08-04 04:32:46,230 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) [2023-08-04 04:32:46,230 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 94 flow. Second operand 3 states and 329 transitions. [2023-08-04 04:32:46,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 230 flow [2023-08-04 04:32:46,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 04:32:46,233 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 106 flow [2023-08-04 04:32:46,233 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-04 04:32:46,234 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-04 04:32:46,234 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 106 flow [2023-08-04 04:32:46,234 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) [2023-08-04 04:32:46,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:46,234 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:46,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:32:46,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:46,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1050221781, now seen corresponding path program 1 times [2023-08-04 04:32:46,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:46,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689433636] [2023-08-04 04:32:46,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:46,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:46,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:46,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689433636] [2023-08-04 04:32:46,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689433636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:46,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:46,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:46,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158365930] [2023-08-04 04:32:46,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:46,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:46,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:46,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 166 [2023-08-04 04:32:46,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 106 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) [2023-08-04 04:32:46,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:46,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 166 [2023-08-04 04:32:46,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:46,443 INFO L124 PetriNetUnfolderBase]: 425/963 cut-off events. [2023-08-04 04:32:46,444 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2023-08-04 04:32:46,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 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 5267 event pairs, 204 based on Foata normal form. 200/1161 useless extension candidates. Maximal degree in co-relation 1189. Up to 443 conditions per place. [2023-08-04 04:32:46,450 INFO L140 encePairwiseOnDemand]: 153/166 looper letters, 33 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2023-08-04 04:32:46,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 251 flow [2023-08-04 04:32:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-04 04:32:46,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124497991967871 [2023-08-04 04:32:46,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-04 04:32:46,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-04 04:32:46,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:46,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-04 04:32:46,453 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) [2023-08-04 04:32:46,454 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) [2023-08-04 04:32:46,454 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) [2023-08-04 04:32:46,455 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 106 flow. Second operand 3 states and 305 transitions. [2023-08-04 04:32:46,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 251 flow [2023-08-04 04:32:46,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:46,459 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 170 flow [2023-08-04 04:32:46,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-08-04 04:32:46,461 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-08-04 04:32:46,461 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 170 flow [2023-08-04 04:32:46,461 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) [2023-08-04 04:32:46,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:46,461 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:46,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:32:46,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:46,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1462972242, now seen corresponding path program 1 times [2023-08-04 04:32:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:46,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959921915] [2023-08-04 04:32:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:46,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:46,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:46,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959921915] [2023-08-04 04:32:46,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959921915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:46,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:46,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:46,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295746490] [2023-08-04 04:32:46,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:46,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:32:46,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:32:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:32:46,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 166 [2023-08-04 04:32:46,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 170 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) [2023-08-04 04:32:46,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:46,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 166 [2023-08-04 04:32:46,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:46,876 INFO L124 PetriNetUnfolderBase]: 90/305 cut-off events. [2023-08-04 04:32:46,876 INFO L125 PetriNetUnfolderBase]: For 273/277 co-relation queries the response was YES. [2023-08-04 04:32:46,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 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 1361 event pairs, 13 based on Foata normal form. 80/385 useless extension candidates. Maximal degree in co-relation 540. Up to 200 conditions per place. [2023-08-04 04:32:46,878 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 29 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2023-08-04 04:32:46,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 283 flow [2023-08-04 04:32:46,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2023-08-04 04:32:46,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6069277108433735 [2023-08-04 04:32:46,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2023-08-04 04:32:46,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2023-08-04 04:32:46,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:46,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2023-08-04 04:32:46,882 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) [2023-08-04 04:32:46,883 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) [2023-08-04 04:32:46,883 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) [2023-08-04 04:32:46,883 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 170 flow. Second operand 4 states and 403 transitions. [2023-08-04 04:32:46,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 283 flow [2023-08-04 04:32:46,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:46,886 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 173 flow [2023-08-04 04:32:46,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=44, 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=173, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-04 04:32:46,887 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-08-04 04:32:46,887 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 173 flow [2023-08-04 04:32:46,887 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) [2023-08-04 04:32:46,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:46,887 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] [2023-08-04 04:32:46,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:32:46,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:46,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1783818900, now seen corresponding path program 1 times [2023-08-04 04:32:46,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:46,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838775824] [2023-08-04 04:32:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:47,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:47,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838775824] [2023-08-04 04:32:47,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838775824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:47,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:47,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:47,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923876116] [2023-08-04 04:32:47,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:47,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:32:47,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:32:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:47,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 166 [2023-08-04 04:32:47,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 173 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) [2023-08-04 04:32:47,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:47,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 166 [2023-08-04 04:32:47,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:47,197 INFO L124 PetriNetUnfolderBase]: 108/326 cut-off events. [2023-08-04 04:32:47,198 INFO L125 PetriNetUnfolderBase]: For 257/258 co-relation queries the response was YES. [2023-08-04 04:32:47,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 326 events. 108/326 cut-off events. For 257/258 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1416 event pairs, 38 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 459. Up to 152 conditions per place. [2023-08-04 04:32:47,199 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 59 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2023-08-04 04:32:47,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 464 flow [2023-08-04 04:32:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:32:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:32:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 699 transitions. [2023-08-04 04:32:47,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015490533562823 [2023-08-04 04:32:47,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 699 transitions. [2023-08-04 04:32:47,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 699 transitions. [2023-08-04 04:32:47,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:47,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 699 transitions. [2023-08-04 04:32:47,204 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) [2023-08-04 04:32:47,205 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) [2023-08-04 04:32:47,205 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) [2023-08-04 04:32:47,206 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 173 flow. Second operand 7 states and 699 transitions. [2023-08-04 04:32:47,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 464 flow [2023-08-04 04:32:47,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:47,208 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 212 flow [2023-08-04 04:32:47,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, 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=212, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-08-04 04:32:47,209 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-08-04 04:32:47,209 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 212 flow [2023-08-04 04:32:47,209 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) [2023-08-04 04:32:47,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:47,210 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] [2023-08-04 04:32:47,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:32:47,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:47,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:47,210 INFO L85 PathProgramCache]: Analyzing trace with hash 418651402, now seen corresponding path program 1 times [2023-08-04 04:32:47,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:47,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460553337] [2023-08-04 04:32:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:47,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:47,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460553337] [2023-08-04 04:32:47,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460553337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:47,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:47,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:47,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774091807] [2023-08-04 04:32:47,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:47,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:32:47,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:32:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:47,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 166 [2023-08-04 04:32:47,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 212 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) [2023-08-04 04:32:47,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:47,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 166 [2023-08-04 04:32:47,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:47,507 INFO L124 PetriNetUnfolderBase]: 102/319 cut-off events. [2023-08-04 04:32:47,507 INFO L125 PetriNetUnfolderBase]: For 289/289 co-relation queries the response was YES. [2023-08-04 04:32:47,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 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 1387 event pairs, 34 based on Foata normal form. 1/318 useless extension candidates. Maximal degree in co-relation 579. Up to 170 conditions per place. [2023-08-04 04:32:47,509 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 52 selfloop transitions, 9 changer transitions 1/69 dead transitions. [2023-08-04 04:32:47,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 444 flow [2023-08-04 04:32:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:32:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:32:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 785 transitions. [2023-08-04 04:32:47,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911144578313253 [2023-08-04 04:32:47,512 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 785 transitions. [2023-08-04 04:32:47,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 785 transitions. [2023-08-04 04:32:47,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:47,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 785 transitions. [2023-08-04 04:32:47,514 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) [2023-08-04 04:32:47,516 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) [2023-08-04 04:32:47,516 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) [2023-08-04 04:32:47,516 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 212 flow. Second operand 8 states and 785 transitions. [2023-08-04 04:32:47,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 444 flow [2023-08-04 04:32:47,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:47,519 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 266 flow [2023-08-04 04:32:47,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=266, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-08-04 04:32:47,520 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-08-04 04:32:47,520 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 266 flow [2023-08-04 04:32:47,520 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) [2023-08-04 04:32:47,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:47,520 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] [2023-08-04 04:32:47,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:32:47,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:32:47,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:47,521 INFO L85 PathProgramCache]: Analyzing trace with hash 657087315, now seen corresponding path program 1 times [2023-08-04 04:32:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:47,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452671647] [2023-08-04 04:32:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:47,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:47,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452671647] [2023-08-04 04:32:47,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452671647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:47,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:47,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 04:32:47,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442690509] [2023-08-04 04:32:47,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:47,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 04:32:47,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:47,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 04:32:47,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-04 04:32:47,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 166 [2023-08-04 04:32:47,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 266 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) [2023-08-04 04:32:47,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:47,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 166 [2023-08-04 04:32:47,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:47,967 INFO L124 PetriNetUnfolderBase]: 108/324 cut-off events. [2023-08-04 04:32:47,967 INFO L125 PetriNetUnfolderBase]: For 328/329 co-relation queries the response was YES. [2023-08-04 04:32:47,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 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 1418 event pairs, 42 based on Foata normal form. 2/324 useless extension candidates. Maximal degree in co-relation 735. Up to 150 conditions per place. [2023-08-04 04:32:47,968 INFO L140 encePairwiseOnDemand]: 153/166 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-08-04 04:32:47,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 554 flow [2023-08-04 04:32:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-04 04:32:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-04 04:32:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1020 transitions. [2023-08-04 04:32:47,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585980284775466 [2023-08-04 04:32:47,971 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1020 transitions. [2023-08-04 04:32:47,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1020 transitions. [2023-08-04 04:32:47,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:47,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1020 transitions. [2023-08-04 04:32:47,974 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) [2023-08-04 04:32:47,978 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) [2023-08-04 04:32:47,978 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) [2023-08-04 04:32:47,978 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 266 flow. Second operand 11 states and 1020 transitions. [2023-08-04 04:32:47,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 554 flow [2023-08-04 04:32:47,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:47,982 INFO L231 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2023-08-04 04:32:47,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=73, PETRI_TRANSITIONS=0} [2023-08-04 04:32:47,983 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-08-04 04:32:47,983 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2023-08-04 04:32:47,984 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) [2023-08-04 04:32:47,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 04:32:47,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 04:32:47,985 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:47,985 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 04:32:47,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 109 transitions, 236 flow [2023-08-04 04:32:48,002 INFO L124 PetriNetUnfolderBase]: 13/199 cut-off events. [2023-08-04 04:32:48,002 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:32:48,002 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. [2023-08-04 04:32:48,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 109 transitions, 236 flow [2023-08-04 04:32:48,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 74 transitions, 160 flow [2023-08-04 04:32:48,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:48,003 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 74 transitions, 160 flow [2023-08-04 04:32:48,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 74 transitions, 160 flow [2023-08-04 04:32:48,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 160 flow [2023-08-04 04:32:48,009 INFO L124 PetriNetUnfolderBase]: 0/87 cut-off events. [2023-08-04 04:32:48,009 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:32:48,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 0/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-04 04:32:48,010 INFO L119 LiptonReduction]: Number of co-enabled transitions 1404 [2023-08-04 04:32:49,853 INFO L134 LiptonReduction]: Checked pairs total: 4459 [2023-08-04 04:32:49,853 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-04 04:32:49,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:32:49,855 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;@2435d7fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:49,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:49,857 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:49,857 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 04:32:49,857 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:32:49,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:49,858 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-04 04:32:49,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:32:49,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:49,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1993591217, now seen corresponding path program 1 times [2023-08-04 04:32:49,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:49,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949602129] [2023-08-04 04:32:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:49,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:49,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:49,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949602129] [2023-08-04 04:32:49,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949602129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:49,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:49,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:49,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137215139] [2023-08-04 04:32:49,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:32:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:49,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:32:49,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:32:49,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 159 [2023-08-04 04:32:49,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:49,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:49,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 159 [2023-08-04 04:32:49,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:49,947 INFO L124 PetriNetUnfolderBase]: 63/180 cut-off events. [2023-08-04 04:32:49,947 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:32:49,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 180 events. 63/180 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 681 event pairs, 0 based on Foata normal form. 64/244 useless extension candidates. Maximal degree in co-relation 54. Up to 135 conditions per place. [2023-08-04 04:32:49,948 INFO L140 encePairwiseOnDemand]: 157/159 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-08-04 04:32:49,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 122 flow [2023-08-04 04:32:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-04 04:32:49,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6509433962264151 [2023-08-04 04:32:49,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-04 04:32:49,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-04 04:32:49,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:49,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-04 04:32:49,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:49,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:49,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:49,952 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 64 flow. Second operand 4 states and 414 transitions. [2023-08-04 04:32:49,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 122 flow [2023-08-04 04:32:49,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:49,953 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-08-04 04:32:49,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-08-04 04:32:49,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-04 04:32:49,954 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-08-04 04:32:49,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:49,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:32:49,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:32:49,955 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:32:49,955 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:32:49,955 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:32:49,955 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:32:49,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:32:49 BasicIcfg [2023-08-04 04:32:49,962 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:32:49,962 INFO L158 Benchmark]: Toolchain (without parser) took 12855.26ms. Allocated memory was 509.6MB in the beginning and 612.4MB in the end (delta: 102.8MB). Free memory was 455.7MB in the beginning and 485.1MB in the end (delta: -29.5MB). Peak memory consumption was 73.9MB. Max. memory is 16.0GB. [2023-08-04 04:32:49,962 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 333.4MB. Free memory is still 282.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:32:49,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.79ms. Allocated memory is still 509.6MB. Free memory was 455.7MB in the beginning and 436.2MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:32:49,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.21ms. Allocated memory is still 509.6MB. Free memory was 436.2MB in the beginning and 434.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:32:49,963 INFO L158 Benchmark]: Boogie Preprocessor took 22.65ms. Allocated memory is still 509.6MB. Free memory was 434.2MB in the beginning and 432.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:32:49,963 INFO L158 Benchmark]: RCFGBuilder took 416.85ms. Allocated memory is still 509.6MB. Free memory was 432.6MB in the beginning and 418.8MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 04:32:49,964 INFO L158 Benchmark]: TraceAbstraction took 11907.57ms. Allocated memory was 509.6MB in the beginning and 612.4MB in the end (delta: 102.8MB). Free memory was 418.2MB in the beginning and 485.1MB in the end (delta: -66.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.0GB. [2023-08-04 04:32:49,965 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 333.4MB. Free memory is still 282.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 455.79ms. Allocated memory is still 509.6MB. Free memory was 455.7MB in the beginning and 436.2MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.21ms. Allocated memory is still 509.6MB. Free memory was 436.2MB in the beginning and 434.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.65ms. Allocated memory is still 509.6MB. Free memory was 434.2MB in the beginning and 432.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 416.85ms. Allocated memory is still 509.6MB. Free memory was 432.6MB in the beginning and 418.8MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 11907.57ms. Allocated memory was 509.6MB in the beginning and 612.4MB in the end (delta: 102.8MB). Free memory was 418.2MB in the beginning and 485.1MB in the end (delta: -66.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 70 PlacesBefore, 20 PlacesAfterwards, 68 TransitionsBefore, 17 TransitionsAfterwards, 828 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 52 TotalNumberOfCompositions, 1784 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 933, independent: 795, independent conditional: 0, independent unconditional: 795, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 418, independent: 393, independent conditional: 0, independent unconditional: 393, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 933, independent: 402, independent conditional: 0, independent unconditional: 402, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 418, unknown conditional: 0, unknown unconditional: 418] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, 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: 2.2s, 58 PlacesBefore, 8 PlacesAfterwards, 55 TransitionsBefore, 5 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, 284 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 284, independent: 284, independent conditional: 0, independent unconditional: 284, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 184, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 284, independent: 100, independent conditional: 0, independent unconditional: 100, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 184, unknown conditional: 0, unknown unconditional: 184] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 91 PlacesBefore, 36 PlacesAfterwards, 87 TransitionsBefore, 31 TransitionsAfterwards, 2340 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 6660 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1973, independent: 1735, independent conditional: 0, independent unconditional: 1735, dependent: 238, dependent conditional: 0, dependent unconditional: 238, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1049, independent: 1009, independent conditional: 0, independent unconditional: 1009, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1973, independent: 726, independent conditional: 0, independent unconditional: 726, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 1049, unknown conditional: 0, unknown unconditional: 1049] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 79 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 26 TransitionsAfterwards, 1404 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 4459 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2039, independent: 1810, independent conditional: 0, independent unconditional: 1810, dependent: 229, dependent conditional: 0, dependent unconditional: 229, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 678, independent: 648, independent conditional: 0, independent unconditional: 648, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2039, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 199, dependent conditional: 0, dependent unconditional: 199, unknown: 678, unknown conditional: 0, unknown unconditional: 678] , Statistics on independence cache: Total cache size (in pairs): 102, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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: 3.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 55 SizeOfPredicates, 0 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 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: 4.5s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 434 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 211 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 146 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1204 IncrementalHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 65 mSDtfsCounter, 1204 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=7, InterpolantAutomatonStates: 43, 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, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 671 SizeOfPredicates, 0 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 36/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 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: 2.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency 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: 2.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 5/5 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! [2023-08-04 04:32:50,003 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...