/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:49:32,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:49:32,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:49:32,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:49:32,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:49:32,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:49:32,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:49:32,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:49:32,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:49:32,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:49:32,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:49:32,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:49:32,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:49:32,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:49:32,169 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:49:32,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:49:32,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:49:32,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:49:32,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:49:32,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:49:32,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:49:32,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:49:32,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:49:32,171 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:49:32,172 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:49:32,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:49:32,173 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:49:32,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:49:32,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:49:32,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:49:32,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:49:32,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:49:32,175 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:49:32,175 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:49:32,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:49:32,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:49:32,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:49:32,176 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:49:32,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:49:32,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:49:32,176 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:49:32,176 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:49:32,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:49:32,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:49:32,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:49:32,370 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:49:32,370 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:49:32,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i [2023-08-03 15:49:33,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:49:33,797 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:49:33,797 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i [2023-08-03 15:49:33,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d2896a0/0b5436b7e0f9459489aded1aaf3f2697/FLAG72a9d1590 [2023-08-03 15:49:33,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d2896a0/0b5436b7e0f9459489aded1aaf3f2697 [2023-08-03 15:49:33,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:49:33,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:49:33,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:49:33,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:49:33,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:49:33,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:49:33" (1/1) ... [2023-08-03 15:49:33,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2405938b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:33, skipping insertion in model container [2023-08-03 15:49:33,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:49:33" (1/1) ... [2023-08-03 15:49:33,877 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:49:34,091 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i[30422,30435] [2023-08-03 15:49:34,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:49:34,104 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:49:34,135 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 15:49:34,137 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-03 15:49:34,158 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_29_conditionals_vs_bound2.i[30422,30435] [2023-08-03 15:49:34,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:49:34,195 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:49:34,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34 WrapperNode [2023-08-03 15:49:34,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:49:34,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:49:34,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:49:34,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:49:34,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,247 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 65 [2023-08-03 15:49:34,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:49:34,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:49:34,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:49:34,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:49:34,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:49:34,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:49:34,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:49:34,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:49:34,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (1/1) ... [2023-08-03 15:49:34,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:49:34,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:49:34,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 15:49:34,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 15:49:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:49:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:49:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:49:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:49:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:49:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:49:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:49:34,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:49:34,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:49:34,347 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:49:34,440 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:49:34,441 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:49:34,551 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:49:34,582 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:49:34,583 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 15:49:34,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:49:34 BoogieIcfgContainer [2023-08-03 15:49:34,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:49:34,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:49:34,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:49:34,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:49:34,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:49:33" (1/3) ... [2023-08-03 15:49:34,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db7cedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:49:34, skipping insertion in model container [2023-08-03 15:49:34,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:34" (2/3) ... [2023-08-03 15:49:34,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db7cedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:49:34, skipping insertion in model container [2023-08-03 15:49:34,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:49:34" (3/3) ... [2023-08-03 15:49:34,592 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_29_conditionals_vs_bound2.i [2023-08-03 15:49:34,603 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:49:34,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:49:34,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:49:34,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:49:34,647 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:49:34,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 58 transitions, 121 flow [2023-08-03 15:49:34,719 INFO L124 PetriNetUnfolderBase]: 6/68 cut-off events. [2023-08-03 15:49:34,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:34,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 6/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-03 15:49:34,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 58 transitions, 121 flow [2023-08-03 15:49:34,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 58 transitions, 121 flow [2023-08-03 15:49:34,735 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:49:34,753 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 58 transitions, 121 flow [2023-08-03 15:49:34,756 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 58 transitions, 121 flow [2023-08-03 15:49:34,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 58 transitions, 121 flow [2023-08-03 15:49:34,777 INFO L124 PetriNetUnfolderBase]: 6/68 cut-off events. [2023-08-03 15:49:34,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:34,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 6/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-03 15:49:34,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 928 [2023-08-03 15:49:36,833 INFO L134 LiptonReduction]: Checked pairs total: 699 [2023-08-03 15:49:36,833 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-03 15:49:36,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:49:36,849 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;@5a7c5bdb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:49:36,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:49:36,851 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:49:36,851 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 15:49:36,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:36,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:36,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:49:36,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:49:36,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:36,857 INFO L85 PathProgramCache]: Analyzing trace with hash 9033387, now seen corresponding path program 1 times [2023-08-03 15:49:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:36,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174394115] [2023-08-03 15:49:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:37,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:37,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174394115] [2023-08-03 15:49:37,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174394115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:49:37,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:49:37,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:49:37,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191814188] [2023-08-03 15:49:37,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:49:37,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 15:49:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:37,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 15:49:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 15:49:37,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 120 [2023-08-03 15:49:37,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:37,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:37,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 120 [2023-08-03 15:49:37,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:37,085 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-08-03 15:49:37,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:37,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 15 events. 3/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 3 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 20. Up to 15 conditions per place. [2023-08-03 15:49:37,086 INFO L140 encePairwiseOnDemand]: 119/120 looper letters, 5 selfloop transitions, 0 changer transitions 1/7 dead transitions. [2023-08-03 15:49:37,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 31 flow [2023-08-03 15:49:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 15:49:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 15:49:37,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 111 transitions. [2023-08-03 15:49:37,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2023-08-03 15:49:37,098 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 111 transitions. [2023-08-03 15:49:37,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 111 transitions. [2023-08-03 15:49:37,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:37,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 111 transitions. [2023-08-03 15:49:37,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:37,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:37,111 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:37,113 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 2 states and 111 transitions. [2023-08-03 15:49:37,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 31 flow [2023-08-03 15:49:37,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:49:37,116 INFO L231 Difference]: Finished difference. Result has 11 places, 6 transitions, 17 flow [2023-08-03 15:49:37,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2023-08-03 15:49:37,122 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2023-08-03 15:49:37,123 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 17 flow [2023-08-03 15:49:37,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:37,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:37,123 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:49:37,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:49:37,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:49:37,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash 91152444, now seen corresponding path program 1 times [2023-08-03 15:49:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:37,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821111900] [2023-08-03 15:49:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:49:37,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:49:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:49:37,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:49:37,205 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:49:37,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:49:37,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:49:37,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:49:37,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:49:37,209 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:49:37,211 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:49:37,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:49:37,234 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:49:37,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 15:49:37,274 INFO L124 PetriNetUnfolderBase]: 11/113 cut-off events. [2023-08-03 15:49:37,274 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:49:37,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 113 events. 11/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2023-08-03 15:49:37,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 15:49:37,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 88 transitions, 188 flow [2023-08-03 15:49:37,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:49:37,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 88 transitions, 188 flow [2023-08-03 15:49:37,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 88 transitions, 188 flow [2023-08-03 15:49:37,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 88 transitions, 188 flow [2023-08-03 15:49:37,291 INFO L124 PetriNetUnfolderBase]: 11/113 cut-off events. [2023-08-03 15:49:37,291 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:49:37,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 113 events. 11/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2023-08-03 15:49:37,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 3596 [2023-08-03 15:49:39,494 INFO L134 LiptonReduction]: Checked pairs total: 3004 [2023-08-03 15:49:39,494 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-03 15:49:39,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:49:39,497 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;@5a7c5bdb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:49:39,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:49:39,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:49:39,499 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 15:49:39,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:39,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:39,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:49:39,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:49:39,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 15457665, now seen corresponding path program 1 times [2023-08-03 15:49:39,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:39,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846952985] [2023-08-03 15:49:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:39,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:39,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846952985] [2023-08-03 15:49:39,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846952985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:49:39,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:49:39,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:49:39,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719161079] [2023-08-03 15:49:39,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:49:39,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 15:49:39,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 15:49:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 15:49:39,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-03 15:49:39,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:39,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:39,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-03 15:49:39,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:39,560 INFO L124 PetriNetUnfolderBase]: 48/106 cut-off events. [2023-08-03 15:49:39,560 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 15:49:39,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 106 events. 48/106 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 334 event pairs, 48 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 59. Up to 100 conditions per place. [2023-08-03 15:49:39,561 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 9 selfloop transitions, 0 changer transitions 1/12 dead transitions. [2023-08-03 15:49:39,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 56 flow [2023-08-03 15:49:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 15:49:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 15:49:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2023-08-03 15:49:39,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664804469273743 [2023-08-03 15:49:39,563 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 167 transitions. [2023-08-03 15:49:39,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 167 transitions. [2023-08-03 15:49:39,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:39,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 167 transitions. [2023-08-03 15:49:39,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:39,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:39,566 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:39,566 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 44 flow. Second operand 2 states and 167 transitions. [2023-08-03 15:49:39,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 56 flow [2023-08-03 15:49:39,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 54 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:49:39,567 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 32 flow [2023-08-03 15:49:39,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-08-03 15:49:39,568 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-03 15:49:39,568 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 32 flow [2023-08-03 15:49:39,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:39,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:39,568 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:49:39,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:49:39,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:49:39,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash -107180177, now seen corresponding path program 1 times [2023-08-03 15:49:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765510625] [2023-08-03 15:49:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:39,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:49:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765510625] [2023-08-03 15:49:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765510625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:49:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604528638] [2023-08-03 15:49:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:39,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:49:39,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:49:39,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:49:39,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:49:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:49:39,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:49:39,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:49:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:49:39,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:49:39,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604528638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:49:39,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:49:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:49:39,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094458322] [2023-08-03 15:49:39,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:49:39,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:49:39,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:49:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:49:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:49:39,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-03 15:49:39,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 32 flow. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:39,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:49:39,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-03 15:49:39,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:49:39,841 INFO L124 PetriNetUnfolderBase]: 22/55 cut-off events. [2023-08-03 15:49:39,841 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 15:49:39,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 55 events. 22/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 116 event pairs, 0 based on Foata normal form. 9/63 useless extension candidates. Maximal degree in co-relation 117. Up to 25 conditions per place. [2023-08-03 15:49:39,841 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-03 15:49:39,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 78 flow [2023-08-03 15:49:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:49:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:49:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2023-08-03 15:49:39,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223463687150838 [2023-08-03 15:49:39,845 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2023-08-03 15:49:39,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2023-08-03 15:49:39,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:49:39,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2023-08-03 15:49:39,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:39,850 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) [2023-08-03 15:49:39,850 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) [2023-08-03 15:49:39,850 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 32 flow. Second operand 5 states and 378 transitions. [2023-08-03 15:49:39,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 78 flow [2023-08-03 15:49:39,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:49:39,851 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-03 15:49:39,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-03 15:49:39,852 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-08-03 15:49:39,852 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-03 15:49:39,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:49:39,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:49:39,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:49:39,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:49:39,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:49:39,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:49:40,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:49:40,059 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:49:40,062 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:49:40,062 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:49:40,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:49:40 BasicIcfg [2023-08-03 15:49:40,066 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:49:40,066 INFO L158 Benchmark]: Toolchain (without parser) took 6242.15ms. Allocated memory is still 601.9MB. Free memory was 547.1MB in the beginning and 494.5MB in the end (delta: 52.6MB). Peak memory consumption was 54.6MB. Max. memory is 16.0GB. [2023-08-03 15:49:40,067 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 383.8MB. Free memory is still 330.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:49:40,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.95ms. Allocated memory is still 601.9MB. Free memory was 547.1MB in the beginning and 527.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:49:40,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.68ms. Allocated memory is still 601.9MB. Free memory was 527.7MB in the beginning and 525.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:49:40,067 INFO L158 Benchmark]: Boogie Preprocessor took 33.37ms. Allocated memory is still 601.9MB. Free memory was 525.7MB in the beginning and 524.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:49:40,068 INFO L158 Benchmark]: RCFGBuilder took 302.79ms. Allocated memory is still 601.9MB. Free memory was 524.3MB in the beginning and 510.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 15:49:40,068 INFO L158 Benchmark]: TraceAbstraction took 5479.25ms. Allocated memory is still 601.9MB. Free memory was 509.7MB in the beginning and 494.5MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 15:49:40,070 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 383.8MB. Free memory is still 330.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 370.95ms. Allocated memory is still 601.9MB. Free memory was 547.1MB in the beginning and 527.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.68ms. Allocated memory is still 601.9MB. Free memory was 527.7MB in the beginning and 525.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.37ms. Allocated memory is still 601.9MB. Free memory was 525.7MB in the beginning and 524.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 302.79ms. Allocated memory is still 601.9MB. Free memory was 524.3MB in the beginning and 510.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5479.25ms. Allocated memory is still 601.9MB. Free memory was 509.7MB in the beginning and 494.5MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] - GenericResultAtLocation [Line: 254]: Unsoundness Warning unspecified type, defaulting to int C: short [254] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 56 PlacesBefore, 11 PlacesAfterwards, 58 TransitionsBefore, 8 TransitionsAfterwards, 928 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 62 TotalNumberOfCompositions, 699 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 699, independent: 699, independent conditional: 0, independent unconditional: 699, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 447, independent: 447, independent conditional: 0, independent unconditional: 447, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 699, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 447, unknown conditional: 0, unknown unconditional: 447] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 84 PlacesBefore, 20 PlacesAfterwards, 88 TransitionsBefore, 16 TransitionsAfterwards, 3596 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 91 TotalNumberOfCompositions, 3004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2763, independent: 2736, independent conditional: 0, independent unconditional: 2736, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1864, independent: 1847, independent conditional: 0, independent unconditional: 1847, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2763, independent: 889, independent conditional: 0, independent unconditional: 889, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 1864, unknown conditional: 0, unknown unconditional: 1864] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 718]: 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, 80 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: 2.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 106 locations, 4 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: 2.8s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 SizeOfPredicates, 0 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:49:40,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...