/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_18-first-reads_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:29:57,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:29:57,091 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:29:57,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:29:57,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:29:57,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:29:57,098 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:29:57,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:29:57,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:29:57,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:29:57,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:29:57,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:29:57,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:29:57,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:29:57,134 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:29:57,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:29:57,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:29:57,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:29:57,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:29:57,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:29:57,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:29:57,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:29:57,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:29:57,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:29:57,136 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:29:57,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:29:57,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:29:57,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:29:57,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:29:57,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:29:57,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:29:57,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:29:57,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:29:57,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:29:57,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:29:57,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:29:57,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:29:57,139 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:29:57,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:29:57,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:29:57,140 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:29:57,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:29:57,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:29:57,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:29:57,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:29:57,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:29:57,381 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:29:57,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_18-first-reads_true_bound2.i [2023-08-04 04:29:58,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:29:58,702 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:29:58,702 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_18-first-reads_true_bound2.i [2023-08-04 04:29:58,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cacc71a13/027f59dfa29148ed986a799e44534cb1/FLAGb9a4c7bbe [2023-08-04 04:29:58,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cacc71a13/027f59dfa29148ed986a799e44534cb1 [2023-08-04 04:29:58,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:29:58,732 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:29:58,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:29:58,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:29:58,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:29:58,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:29:58" (1/1) ... [2023-08-04 04:29:58,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482a01e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:58, skipping insertion in model container [2023-08-04 04:29:58,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:29:58" (1/1) ... [2023-08-04 04:29:58,783 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:29:58,938 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_18-first-reads_true_bound2.i[1088,1101] [2023-08-04 04:29:59,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:29:59,066 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:29:59,080 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_18-first-reads_true_bound2.i[1088,1101] [2023-08-04 04:29:59,099 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:29:59,100 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-04 04:29:59,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:29:59,169 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:29:59,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59 WrapperNode [2023-08-04 04:29:59,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:29:59,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:29:59,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:29:59,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:29:59,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,225 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-08-04 04:29:59,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:29:59,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:29:59,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:29:59,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:29:59,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:29:59,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:29:59,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:29:59,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:29:59,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (1/1) ... [2023-08-04 04:29:59,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:29:59,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:29:59,303 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 04:29:59,321 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 04:29:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:29:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:29:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:29:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:29:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:29:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:29:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:29:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:29:59,335 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 04:29:59,441 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:29:59,442 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:29:59,589 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:29:59,595 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:29:59,595 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:29:59,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:29:59 BoogieIcfgContainer [2023-08-04 04:29:59,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:29:59,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:29:59,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:29:59,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:29:59,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:29:58" (1/3) ... [2023-08-04 04:29:59,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549f5415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:29:59, skipping insertion in model container [2023-08-04 04:29:59,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:59" (2/3) ... [2023-08-04 04:29:59,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549f5415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:29:59, skipping insertion in model container [2023-08-04 04:29:59,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:29:59" (3/3) ... [2023-08-04 04:29:59,604 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_18-first-reads_true_bound2.i [2023-08-04 04:29:59,611 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:29:59,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:29:59,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 04:29:59,620 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:29:59,670 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:29:59,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 170 flow [2023-08-04 04:29:59,744 INFO L124 PetriNetUnfolderBase]: 9/108 cut-off events. [2023-08-04 04:29:59,745 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:29:59,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 108 events. 9/108 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 170 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-08-04 04:29:59,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 81 transitions, 170 flow [2023-08-04 04:29:59,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 76 transitions, 157 flow [2023-08-04 04:29:59,756 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:29:59,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 76 transitions, 157 flow [2023-08-04 04:29:59,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 76 transitions, 157 flow [2023-08-04 04:29:59,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 76 transitions, 157 flow [2023-08-04 04:29:59,824 INFO L124 PetriNetUnfolderBase]: 8/103 cut-off events. [2023-08-04 04:29:59,824 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:29:59,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 8/103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 165 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-08-04 04:29:59,827 INFO L119 LiptonReduction]: Number of co-enabled transitions 990 [2023-08-04 04:30:01,784 INFO L134 LiptonReduction]: Checked pairs total: 1659 [2023-08-04 04:30:01,785 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-04 04:30:01,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:30:01,805 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;@5a6828b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:30:01,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:30:01,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:30:01,807 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-04 04:30:01,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:01,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:01,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:30:01,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:01,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash 320, now seen corresponding path program 1 times [2023-08-04 04:30:01,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:01,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021924897] [2023-08-04 04:30:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:01,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:01,901 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 04:30:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:01,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021924897] [2023-08-04 04:30:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021924897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:01,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:30:01,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:30:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793241619] [2023-08-04 04:30:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:01,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:30:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:30:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:30:01,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 161 [2023-08-04 04:30:01,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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 04:30:01,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:01,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 161 [2023-08-04 04:30:01,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:01,972 INFO L124 PetriNetUnfolderBase]: 36/84 cut-off events. [2023-08-04 04:30:01,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:01,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 84 events. 36/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 228 event pairs, 28 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 142. Up to 76 conditions per place. [2023-08-04 04:30:01,975 INFO L140 encePairwiseOnDemand]: 158/161 looper letters, 11 selfloop transitions, 0 changer transitions 3/15 dead transitions. [2023-08-04 04:30:01,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 61 flow [2023-08-04 04:30:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:30:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:30:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 162 transitions. [2023-08-04 04:30:01,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2023-08-04 04:30:01,986 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 162 transitions. [2023-08-04 04:30:01,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 162 transitions. [2023-08-04 04:30:01,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:01,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 162 transitions. [2023-08-04 04:30:01,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 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 04:30:01,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 04:30:01,995 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 04:30:01,997 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 43 flow. Second operand 2 states and 162 transitions. [2023-08-04 04:30:01,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 61 flow [2023-08-04 04:30:01,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 61 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:30:02,000 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 27 flow [2023-08-04 04:30:02,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=27, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-04 04:30:02,004 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-04 04:30:02,004 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 27 flow [2023-08-04 04:30:02,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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 04:30:02,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:02,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-04 04:30:02,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:30:02,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:02,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash 317405, now seen corresponding path program 1 times [2023-08-04 04:30:02,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325594744] [2023-08-04 04:30:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:02,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:02,098 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 04:30:02,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325594744] [2023-08-04 04:30:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325594744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:02,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:30:02,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:30:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008878785] [2023-08-04 04:30:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:30:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:30:02,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:30:02,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 161 [2023-08-04 04:30:02,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 04:30:02,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:02,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 161 [2023-08-04 04:30:02,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:02,149 INFO L124 PetriNetUnfolderBase]: 21/53 cut-off events. [2023-08-04 04:30:02,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:02,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 53 events. 21/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 166 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 107. Up to 46 conditions per place. [2023-08-04 04:30:02,151 INFO L140 encePairwiseOnDemand]: 158/161 looper letters, 14 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-08-04 04:30:02,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 17 transitions, 69 flow [2023-08-04 04:30:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:30:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:30:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-04 04:30:02,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2023-08-04 04:30:02,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-04 04:30:02,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-04 04:30:02,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:02,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-04 04:30:02,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 04:30:02,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 04:30:02,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 04:30:02,166 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 27 flow. Second operand 3 states and 224 transitions. [2023-08-04 04:30:02,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 17 transitions, 69 flow [2023-08-04 04:30:02,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:30:02,167 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 35 flow [2023-08-04 04:30:02,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-04 04:30:02,172 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-04 04:30:02,175 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 35 flow [2023-08-04 04:30:02,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 04:30:02,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:02,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:30:02,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:30:02,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:02,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash 878071206, now seen corresponding path program 1 times [2023-08-04 04:30:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:02,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641731478] [2023-08-04 04:30:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:02,300 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 04:30:02,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:02,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641731478] [2023-08-04 04:30:02,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641731478] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:30:02,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070254915] [2023-08-04 04:30:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:02,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:02,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:30:02,305 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 04:30:02,309 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 04:30:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:02,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:30:02,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:30:02,431 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 04:30:02,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:30:02,461 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 04:30:02,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070254915] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:30:02,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:30:02,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 04:30:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258506481] [2023-08-04 04:30:02,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:30:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:30:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:30:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:30:02,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 161 [2023-08-04 04:30:02,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 35 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 04:30:02,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:02,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 161 [2023-08-04 04:30:02,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:02,499 INFO L124 PetriNetUnfolderBase]: 9/26 cut-off events. [2023-08-04 04:30:02,499 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 04:30:02,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 26 events. 9/26 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 48 event pairs, 0 based on Foata normal form. 5/28 useless extension candidates. Maximal degree in co-relation 64. Up to 18 conditions per place. [2023-08-04 04:30:02,502 INFO L140 encePairwiseOnDemand]: 158/161 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-08-04 04:30:02,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 14 transitions, 63 flow [2023-08-04 04:30:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:30:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:30:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2023-08-04 04:30:02,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440993788819876 [2023-08-04 04:30:02,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2023-08-04 04:30:02,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2023-08-04 04:30:02,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:02,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2023-08-04 04:30:02,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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 04:30:02,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 04:30:02,508 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 04:30:02,508 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 35 flow. Second operand 4 states and 286 transitions. [2023-08-04 04:30:02,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 14 transitions, 63 flow [2023-08-04 04:30:02,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 14 transitions, 57 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:30:02,508 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-04 04:30:02,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-04 04:30:02,509 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -5 predicate places. [2023-08-04 04:30:02,509 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-04 04:30:02,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 04:30:02,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:30:02,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:30:02,519 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 04:30:02,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:02,713 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 04:30:02,715 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:30:02,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 170 flow [2023-08-04 04:30:02,736 INFO L124 PetriNetUnfolderBase]: 9/108 cut-off events. [2023-08-04 04:30:02,737 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:30:02,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 108 events. 9/108 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 170 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-08-04 04:30:02,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 81 transitions, 170 flow [2023-08-04 04:30:02,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 75 transitions, 155 flow [2023-08-04 04:30:02,740 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:30:02,740 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 75 transitions, 155 flow [2023-08-04 04:30:02,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 75 transitions, 155 flow [2023-08-04 04:30:02,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 75 transitions, 155 flow [2023-08-04 04:30:02,757 INFO L124 PetriNetUnfolderBase]: 8/102 cut-off events. [2023-08-04 04:30:02,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:02,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 102 events. 8/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2023-08-04 04:30:02,758 INFO L119 LiptonReduction]: Number of co-enabled transitions 990 [2023-08-04 04:30:04,589 INFO L134 LiptonReduction]: Checked pairs total: 1521 [2023-08-04 04:30:04,589 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-08-04 04:30:04,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:30:04,592 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;@5a6828b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:30:04,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:30:04,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:30:04,595 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-08-04 04:30:04,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:04,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:04,595 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:30:04,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:30:04,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1288108331, now seen corresponding path program 1 times [2023-08-04 04:30:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:04,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364650933] [2023-08-04 04:30:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:04,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:30:04,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:30:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:30:04,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:30:04,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:30:04,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:30:04,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:30:04,663 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:30:04,663 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:30:04,664 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:30:04,664 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:30:04,677 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:30:04,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 214 flow [2023-08-04 04:30:04,693 INFO L124 PetriNetUnfolderBase]: 16/176 cut-off events. [2023-08-04 04:30:04,693 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:30:04,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 176 events. 16/176 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 376 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 110. Up to 8 conditions per place. [2023-08-04 04:30:04,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 98 transitions, 214 flow [2023-08-04 04:30:04,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 98 transitions, 214 flow [2023-08-04 04:30:04,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:30:04,696 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 98 transitions, 214 flow [2023-08-04 04:30:04,696 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 98 transitions, 214 flow [2023-08-04 04:30:04,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 214 flow [2023-08-04 04:30:04,711 INFO L124 PetriNetUnfolderBase]: 16/176 cut-off events. [2023-08-04 04:30:04,712 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:30:04,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 176 events. 16/176 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 376 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 110. Up to 8 conditions per place. [2023-08-04 04:30:04,715 INFO L119 LiptonReduction]: Number of co-enabled transitions 2760 [2023-08-04 04:30:06,528 INFO L134 LiptonReduction]: Checked pairs total: 6562 [2023-08-04 04:30:06,530 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-04 04:30:06,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:30:06,538 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;@5a6828b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:30:06,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:30:06,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:30:06,541 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-04 04:30:06,541 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:06,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:06,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:30:06,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:06,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:06,543 INFO L85 PathProgramCache]: Analyzing trace with hash 596, now seen corresponding path program 1 times [2023-08-04 04:30:06,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:06,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71474581] [2023-08-04 04:30:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:06,551 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 04:30:06,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:06,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71474581] [2023-08-04 04:30:06,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71474581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:06,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:30:06,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:30:06,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926441228] [2023-08-04 04:30:06,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:06,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:30:06,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:06,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:30:06,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:30:06,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 187 [2023-08-04 04:30:06,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 04:30:06,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:06,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 187 [2023-08-04 04:30:06,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:06,668 INFO L124 PetriNetUnfolderBase]: 451/829 cut-off events. [2023-08-04 04:30:06,668 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-04 04:30:06,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575 conditions, 829 events. 451/829 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3981 event pairs, 392 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 361. Up to 704 conditions per place. [2023-08-04 04:30:06,673 INFO L140 encePairwiseOnDemand]: 185/187 looper letters, 21 selfloop transitions, 0 changer transitions 1/29 dead transitions. [2023-08-04 04:30:06,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 120 flow [2023-08-04 04:30:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:30:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:30:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 200 transitions. [2023-08-04 04:30:06,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347593582887701 [2023-08-04 04:30:06,675 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 200 transitions. [2023-08-04 04:30:06,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 200 transitions. [2023-08-04 04:30:06,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:06,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 200 transitions. [2023-08-04 04:30:06,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 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 04:30:06,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 04:30:06,678 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 04:30:06,678 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 82 flow. Second operand 2 states and 200 transitions. [2023-08-04 04:30:06,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 120 flow [2023-08-04 04:30:06,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:30:06,679 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 71 flow [2023-08-04 04:30:06,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-08-04 04:30:06,680 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-08-04 04:30:06,680 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 71 flow [2023-08-04 04:30:06,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 04:30:06,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:06,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-04 04:30:06,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:30:06,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:06,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:06,681 INFO L85 PathProgramCache]: Analyzing trace with hash 591377, now seen corresponding path program 1 times [2023-08-04 04:30:06,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:06,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596365275] [2023-08-04 04:30:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:06,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:06,709 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 04:30:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596365275] [2023-08-04 04:30:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596365275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:06,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:30:06,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:30:06,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61180500] [2023-08-04 04:30:06,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:06,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:30:06,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:30:06,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:30:06,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 187 [2023-08-04 04:30:06,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 04:30:06,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:06,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 187 [2023-08-04 04:30:06,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:06,797 INFO L124 PetriNetUnfolderBase]: 417/746 cut-off events. [2023-08-04 04:30:06,798 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 04:30:06,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 746 events. 417/746 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3514 event pairs, 160 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 1436. Up to 652 conditions per place. [2023-08-04 04:30:06,801 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 25 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-04 04:30:06,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 137 flow [2023-08-04 04:30:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:30:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:30:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-04 04:30:06,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49910873440285203 [2023-08-04 04:30:06,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-04 04:30:06,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-04 04:30:06,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:06,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-04 04:30:06,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 04:30:06,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:30:06,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:30:06,806 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 71 flow. Second operand 3 states and 280 transitions. [2023-08-04 04:30:06,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 137 flow [2023-08-04 04:30:06,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 135 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:30:06,808 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 81 flow [2023-08-04 04:30:06,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-04 04:30:06,808 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-08-04 04:30:06,808 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 81 flow [2023-08-04 04:30:06,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 04:30:06,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:06,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:30:06,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:30:06,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:06,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1206430295, now seen corresponding path program 1 times [2023-08-04 04:30:06,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309177050] [2023-08-04 04:30:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:06,845 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 04:30:06,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:06,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309177050] [2023-08-04 04:30:06,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309177050] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:30:06,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031700516] [2023-08-04 04:30:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:06,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:30:06,848 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 04:30:06,880 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 04:30:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:06,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:30:06,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:30:06,933 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 04:30:06,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:30:06,948 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 04:30:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031700516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:30:06,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:30:06,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:30:06,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032848268] [2023-08-04 04:30:06,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:30:06,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:30:06,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:30:06,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:30:06,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-08-04 04:30:06,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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 04:30:06,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:06,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-08-04 04:30:06,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:07,068 INFO L124 PetriNetUnfolderBase]: 375/664 cut-off events. [2023-08-04 04:30:07,069 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-04 04:30:07,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 664 events. 375/664 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3000 event pairs, 20 based on Foata normal form. 5/516 useless extension candidates. Maximal degree in co-relation 1378. Up to 492 conditions per place. [2023-08-04 04:30:07,072 INFO L140 encePairwiseOnDemand]: 183/187 looper letters, 32 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-08-04 04:30:07,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 181 flow [2023-08-04 04:30:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:30:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:30:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2023-08-04 04:30:07,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49331550802139035 [2023-08-04 04:30:07,074 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2023-08-04 04:30:07,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2023-08-04 04:30:07,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:07,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2023-08-04 04:30:07,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 04:30:07,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:30:07,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:30:07,078 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 81 flow. Second operand 4 states and 369 transitions. [2023-08-04 04:30:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 181 flow [2023-08-04 04:30:07,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:30:07,080 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 99 flow [2023-08-04 04:30:07,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-08-04 04:30:07,081 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-08-04 04:30:07,082 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 99 flow [2023-08-04 04:30:07,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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 04:30:07,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:07,082 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 04:30:07,089 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 04:30:07,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-04 04:30:07,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:07,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1824599266, now seen corresponding path program 1 times [2023-08-04 04:30:07,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:07,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500792452] [2023-08-04 04:30:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:07,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:07,382 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 04:30:07,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:07,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500792452] [2023-08-04 04:30:07,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500792452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:07,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:30:07,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:30:07,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024850912] [2023-08-04 04:30:07,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:07,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:30:07,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:07,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:30:07,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:30:07,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-08-04 04:30:07,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 04:30:07,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:07,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-08-04 04:30:07,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:07,515 INFO L124 PetriNetUnfolderBase]: 641/1148 cut-off events. [2023-08-04 04:30:07,515 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2023-08-04 04:30:07,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 1148 events. 641/1148 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5760 event pairs, 364 based on Foata normal form. 0/980 useless extension candidates. Maximal degree in co-relation 2519. Up to 766 conditions per place. [2023-08-04 04:30:07,520 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 40 selfloop transitions, 5 changer transitions 2/52 dead transitions. [2023-08-04 04:30:07,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 266 flow [2023-08-04 04:30:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:30:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:30:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-08-04 04:30:07,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222816399286988 [2023-08-04 04:30:07,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-08-04 04:30:07,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-08-04 04:30:07,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:07,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-08-04 04:30:07,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 04:30:07,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:30:07,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:30:07,525 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 99 flow. Second operand 3 states and 293 transitions. [2023-08-04 04:30:07,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 266 flow [2023-08-04 04:30:07,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 259 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 04:30:07,527 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 133 flow [2023-08-04 04:30:07,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-04 04:30:07,528 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-08-04 04:30:07,528 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 133 flow [2023-08-04 04:30:07,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 04:30:07,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:07,529 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:30:07,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:30:07,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:07,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1600120641, now seen corresponding path program 1 times [2023-08-04 04:30:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154084437] [2023-08-04 04:30:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:07,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:07,612 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 04:30:07,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:07,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154084437] [2023-08-04 04:30:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154084437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:07,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:30:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:30:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826540744] [2023-08-04 04:30:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:07,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:30:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:30:07,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:30:07,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 187 [2023-08-04 04:30:07,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 04:30:07,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:07,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 187 [2023-08-04 04:30:07,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:07,728 INFO L124 PetriNetUnfolderBase]: 151/372 cut-off events. [2023-08-04 04:30:07,728 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-08-04 04:30:07,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 372 events. 151/372 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1754 event pairs, 19 based on Foata normal form. 72/418 useless extension candidates. Maximal degree in co-relation 1000. Up to 201 conditions per place. [2023-08-04 04:30:07,729 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-08-04 04:30:07,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 289 flow [2023-08-04 04:30:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:30:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:30:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2023-08-04 04:30:07,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453475935828877 [2023-08-04 04:30:07,731 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2023-08-04 04:30:07,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2023-08-04 04:30:07,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:07,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2023-08-04 04:30:07,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 04:30:07,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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 04:30:07,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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 04:30:07,735 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 133 flow. Second operand 5 states and 424 transitions. [2023-08-04 04:30:07,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 289 flow [2023-08-04 04:30:07,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:30:07,737 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-04 04:30:07,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-04 04:30:07,738 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-04 04:30:07,738 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-04 04:30:07,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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 04:30:07,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:30:07,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:30:07,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:30:07,739 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 04:30:07,739 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:30:07,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 214 flow [2023-08-04 04:30:07,752 INFO L124 PetriNetUnfolderBase]: 16/176 cut-off events. [2023-08-04 04:30:07,752 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:30:07,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 176 events. 16/176 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 376 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 110. Up to 8 conditions per place. [2023-08-04 04:30:07,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 98 transitions, 214 flow [2023-08-04 04:30:07,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 97 transitions, 212 flow [2023-08-04 04:30:07,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:30:07,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 97 transitions, 212 flow [2023-08-04 04:30:07,754 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 97 transitions, 212 flow [2023-08-04 04:30:07,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 212 flow [2023-08-04 04:30:07,764 INFO L124 PetriNetUnfolderBase]: 16/175 cut-off events. [2023-08-04 04:30:07,764 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:30:07,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 175 events. 16/175 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 378 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-04 04:30:07,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 2760 [2023-08-04 04:30:09,600 INFO L134 LiptonReduction]: Checked pairs total: 6502 [2023-08-04 04:30:09,601 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-04 04:30:09,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:30:09,603 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;@5a6828b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:30:09,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:30:09,607 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:30:09,607 INFO L124 PetriNetUnfolderBase]: 5/42 cut-off events. [2023-08-04 04:30:09,607 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 04:30:09,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:09,607 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:30:09,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:30:09,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash 576918878, now seen corresponding path program 1 times [2023-08-04 04:30:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:09,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981517098] [2023-08-04 04:30:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:30:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981517098] [2023-08-04 04:30:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981517098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:30:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111530666] [2023-08-04 04:30:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:09,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:30:09,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:30:09,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:30:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:09,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:30:09,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:30:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:30:09,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:30:09,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111530666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:09,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:30:09,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:30:09,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984550164] [2023-08-04 04:30:09,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:09,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:30:09,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:09,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:30:09,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:30:09,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 179 [2023-08-04 04:30:09,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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 04:30:09,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:09,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 179 [2023-08-04 04:30:09,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:09,862 INFO L124 PetriNetUnfolderBase]: 365/667 cut-off events. [2023-08-04 04:30:09,862 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-04 04:30:09,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 667 events. 365/667 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3383 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 307. Up to 568 conditions per place. [2023-08-04 04:30:09,864 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-04 04:30:09,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 178 flow [2023-08-04 04:30:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:30:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:30:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2023-08-04 04:30:09,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106145251396648 [2023-08-04 04:30:09,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2023-08-04 04:30:09,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2023-08-04 04:30:09,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:09,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2023-08-04 04:30:09,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 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 04:30:09,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 04:30:09,869 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 04:30:09,869 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 80 flow. Second operand 5 states and 457 transitions. [2023-08-04 04:30:09,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 178 flow [2023-08-04 04:30:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:30:09,872 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-04 04:30:09,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-04 04:30:09,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2023-08-04 04:30:09,873 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-04 04:30:09,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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 04:30:09,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:30:09,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:30:10,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:10,079 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:30:10,080 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:30:10,080 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:30:10,080 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:30:10,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:30:10 BasicIcfg [2023-08-04 04:30:10,087 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:30:10,088 INFO L158 Benchmark]: Toolchain (without parser) took 11356.28ms. Allocated memory was 589.3MB in the beginning and 708.8MB in the end (delta: 119.5MB). Free memory was 534.3MB in the beginning and 563.8MB in the end (delta: -29.4MB). Peak memory consumption was 91.2MB. Max. memory is 16.0GB. [2023-08-04 04:30:10,088 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 329.3MB. Free memory is still 274.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:30:10,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.36ms. Allocated memory is still 589.3MB. Free memory was 534.0MB in the beginning and 515.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:30:10,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.46ms. Allocated memory is still 589.3MB. Free memory was 515.1MB in the beginning and 513.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:30:10,089 INFO L158 Benchmark]: Boogie Preprocessor took 41.12ms. Allocated memory is still 589.3MB. Free memory was 513.0MB in the beginning and 511.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:30:10,089 INFO L158 Benchmark]: RCFGBuilder took 329.31ms. Allocated memory is still 589.3MB. Free memory was 511.6MB in the beginning and 498.3MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 04:30:10,090 INFO L158 Benchmark]: TraceAbstraction took 10488.71ms. Allocated memory was 589.3MB in the beginning and 708.8MB in the end (delta: 119.5MB). Free memory was 497.6MB in the beginning and 563.8MB in the end (delta: -66.2MB). Peak memory consumption was 55.6MB. Max. memory is 16.0GB. [2023-08-04 04:30:10,091 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 329.3MB. Free memory is still 274.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 437.36ms. Allocated memory is still 589.3MB. Free memory was 534.0MB in the beginning and 515.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.46ms. Allocated memory is still 589.3MB. Free memory was 515.1MB in the beginning and 513.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.12ms. Allocated memory is still 589.3MB. Free memory was 513.0MB in the beginning and 511.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 329.31ms. Allocated memory is still 589.3MB. Free memory was 511.6MB in the beginning and 498.3MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 10488.71ms. Allocated memory was 589.3MB in the beginning and 708.8MB in the end (delta: 119.5MB). Free memory was 497.6MB in the beginning and 563.8MB in the end (delta: -66.2MB). Peak memory consumption was 55.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 74 PlacesBefore, 20 PlacesAfterwards, 76 TransitionsBefore, 19 TransitionsAfterwards, 990 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 80 TotalNumberOfCompositions, 1659 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1110, independent: 1022, independent conditional: 0, independent unconditional: 1022, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 546, independent: 529, independent conditional: 0, independent unconditional: 529, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1110, independent: 493, independent conditional: 0, independent unconditional: 493, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 546, unknown conditional: 0, unknown unconditional: 546] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 73 PlacesBefore, 17 PlacesAfterwards, 75 TransitionsBefore, 15 TransitionsAfterwards, 990 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 72 TotalNumberOfCompositions, 1521 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1038, independent: 947, independent conditional: 0, independent unconditional: 947, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 545, independent: 529, independent conditional: 0, independent unconditional: 529, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1038, independent: 418, independent conditional: 0, independent unconditional: 418, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 545, unknown conditional: 0, unknown unconditional: 545] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 95 PlacesBefore, 32 PlacesAfterwards, 98 TransitionsBefore, 32 TransitionsAfterwards, 2760 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 89 TotalNumberOfCompositions, 6562 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3559, independent: 3386, independent conditional: 0, independent unconditional: 3386, dependent: 173, dependent conditional: 0, dependent unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1487, independent: 1454, independent conditional: 0, independent unconditional: 1454, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3559, independent: 1932, independent conditional: 0, independent unconditional: 1932, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 1487, unknown conditional: 0, unknown unconditional: 1487] , Statistics on independence cache: Total cache size (in pairs): 125, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 94 PlacesBefore, 31 PlacesAfterwards, 97 TransitionsBefore, 31 TransitionsAfterwards, 2760 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 81 TotalNumberOfCompositions, 6502 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3332, independent: 3159, independent conditional: 0, independent unconditional: 3159, dependent: 173, dependent conditional: 0, dependent unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1511, independent: 1473, independent conditional: 0, independent unconditional: 1473, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3332, independent: 1686, independent conditional: 0, independent unconditional: 1686, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 1511, unknown conditional: 0, unknown unconditional: 1511] , Statistics on independence cache: Total cache size (in pairs): 131, Positive cache size: 114, Positive conditional cache size: 0, Positive unconditional cache size: 114, 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 - 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, 91 locations, 3 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: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 2 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 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, 106 locations, 3 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 295 IncrementalHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 47 mSDtfsCounter, 295 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=4, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 91 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 106 locations, 3 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: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:30:10,127 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...