/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:49:12,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:49:12,266 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 23:49:12,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:49:12,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:49:12,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:49:12,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:49:12,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:49:12,289 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:49:12,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:49:12,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:49:12,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:49:12,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:49:12,291 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:49:12,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:49:12,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:49:12,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:49:12,292 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 23:49:12,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:49:12,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:49:12,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:49:12,498 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:49:12,500 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:49:12,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2025-04-13 23:49:13,759 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13f58d700/c5558980db8846638c4ad9c2a39eeeb7/FLAG93c723b65 [2025-04-13 23:49:14,011 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:49:14,011 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2025-04-13 23:49:14,027 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13f58d700/c5558980db8846638c4ad9c2a39eeeb7/FLAG93c723b65 [2025-04-13 23:49:14,761 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13f58d700/c5558980db8846638c4ad9c2a39eeeb7 [2025-04-13 23:49:14,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:49:14,764 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:49:14,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:49:14,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:49:14,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:49:14,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:49:14" (1/1) ... [2025-04-13 23:49:14,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f37280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:14, skipping insertion in model container [2025-04-13 23:49:14,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:49:14" (1/1) ... [2025-04-13 23:49:14,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:49:15,026 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i[30145,30158] [2025-04-13 23:49:15,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:49:15,043 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:49:15,092 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i[30145,30158] [2025-04-13 23:49:15,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:49:15,114 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:49:15,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15 WrapperNode [2025-04-13 23:49:15,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:49:15,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:49:15,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:49:15,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:49:15,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,145 INFO L138 Inliner]: procedures = 163, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2025-04-13 23:49:15,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:49:15,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:49:15,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:49:15,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:49:15,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,159 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 0 writes are split as follows [0, 0]. [2025-04-13 23:49:15,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,163 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:49:15,167 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:49:15,167 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:49:15,167 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:49:15,168 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (1/1) ... [2025-04-13 23:49:15,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:49:15,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:49:15,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 23:49:15,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 23:49:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2025-04-13 23:49:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2025-04-13 23:49:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:49:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2025-04-13 23:49:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2025-04-13 23:49:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2025-04-13 23:49:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:49:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:49:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:49:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:49:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2025-04-13 23:49:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2025-04-13 23:49:15,216 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 23:49:15,317 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:49:15,319 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:49:15,424 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:49:15,425 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:49:15,425 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:49:15,525 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:49:15,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:49:15 BoogieIcfgContainer [2025-04-13 23:49:15,526 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:49:15,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:49:15,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:49:15,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:49:15,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:49:14" (1/3) ... [2025-04-13 23:49:15,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551c0ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:49:15, skipping insertion in model container [2025-04-13 23:49:15,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:49:15" (2/3) ... [2025-04-13 23:49:15,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551c0ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:49:15, skipping insertion in model container [2025-04-13 23:49:15,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:49:15" (3/3) ... [2025-04-13 23:49:15,533 INFO L128 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2025-04-13 23:49:15,542 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:49:15,543 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG read_write_lock-1.i that has 3 procedures, 28 locations, 25 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 23:49:15,543 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:49:15,586 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 23:49:15,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 40 transitions, 108 flow [2025-04-13 23:49:15,634 INFO L116 PetriNetUnfolderBase]: 0/36 cut-off events. [2025-04-13 23:49:15,637 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-13 23:49:15,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 0/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-13 23:49:15,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 40 transitions, 108 flow [2025-04-13 23:49:15,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 34 transitions, 89 flow [2025-04-13 23:49:15,649 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:49:15,656 INFO L340 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@444be7b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:49:15,656 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 23:49:15,660 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 23:49:15,660 INFO L116 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-04-13 23:49:15,660 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 23:49:15,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 23:49:15,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:49:15,661 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 23:49:15,664 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:49:15,665 INFO L85 PathProgramCache]: Analyzing trace with hash -662956502, now seen corresponding path program 1 times [2025-04-13 23:49:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:49:15,669 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092627477] [2025-04-13 23:49:15,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:49:15,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:49:15,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 23:49:15,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 23:49:15,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:49:15,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:49:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:49:15,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:49:15,795 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092627477] [2025-04-13 23:49:15,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092627477] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:49:15,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:49:15,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 23:49:15,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794544914] [2025-04-13 23:49:15,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:49:15,801 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 23:49:15,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:49:15,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 23:49:15,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 23:49:15,818 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2025-04-13 23:49:15,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 89 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2025-04-13 23:49:15,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 23:49:15,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2025-04-13 23:49:15,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 23:49:16,371 INFO L116 PetriNetUnfolderBase]: 4408/6165 cut-off events. [2025-04-13 23:49:16,371 INFO L117 PetriNetUnfolderBase]: For 500/500 co-relation queries the response was YES. [2025-04-13 23:49:16,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12762 conditions, 6165 events. 4408/6165 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 30272 event pairs, 4408 based on Foata normal form. 0/6142 useless extension candidates. Maximal degree in co-relation 11597. Up to 6125 conditions per place. [2025-04-13 23:49:16,390 INFO L140 encePairwiseOnDemand]: 38/40 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2025-04-13 23:49:16,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 141 flow [2025-04-13 23:49:16,392 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 23:49:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 23:49:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2025-04-13 23:49:16,401 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-04-13 23:49:16,402 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 89 flow. Second operand 2 states and 46 transitions. [2025-04-13 23:49:16,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 141 flow [2025-04-13 23:49:16,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-04-13 23:49:16,414 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2025-04-13 23:49:16,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2025-04-13 23:49:16,420 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2025-04-13 23:49:16,420 INFO L485 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2025-04-13 23:49:16,420 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2025-04-13 23:49:16,422 INFO L790 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2025-04-13 23:49:16,422 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2025-04-13 23:49:16,422 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-13 23:49:16,422 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-04-13 23:49:16,422 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2025-04-13 23:49:16,423 INFO L790 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-04-13 23:49:16,423 INFO L790 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-04-13 23:49:16,423 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:49:16,423 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 23:49:16,430 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 23:49:16,430 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 23:49:16,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 11:49:16 BasicIcfg [2025-04-13 23:49:16,436 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 23:49:16,436 INFO L158 Benchmark]: Toolchain (without parser) took 1672.34ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 60.6MB in the end (delta: 46.1MB). Peak memory consumption was 105.1MB. Max. memory is 8.0GB. [2025-04-13 23:49:16,436 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:49:16,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.47ms. Allocated memory is still 155.2MB. Free memory was 106.0MB in the beginning and 83.4MB in the end (delta: 22.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 23:49:16,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.66ms. Allocated memory is still 155.2MB. Free memory was 83.4MB in the beginning and 81.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:49:16,437 INFO L158 Benchmark]: Boogie Preprocessor took 21.13ms. Allocated memory is still 155.2MB. Free memory was 81.4MB in the beginning and 80.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:49:16,437 INFO L158 Benchmark]: IcfgBuilder took 358.38ms. Allocated memory is still 155.2MB. Free memory was 80.1MB in the beginning and 49.9MB in the end (delta: 30.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2025-04-13 23:49:16,437 INFO L158 Benchmark]: TraceAbstraction took 908.80ms. Allocated memory is still 155.2MB. Free memory was 49.2MB in the beginning and 60.6MB in the end (delta: -11.4MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. [2025-04-13 23:49:16,438 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 350.47ms. Allocated memory is still 155.2MB. Free memory was 106.0MB in the beginning and 83.4MB in the end (delta: 22.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.66ms. Allocated memory is still 155.2MB. Free memory was 83.4MB in the beginning and 81.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 21.13ms. Allocated memory is still 155.2MB. Free memory was 81.4MB in the beginning and 80.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 358.38ms. Allocated memory is still 155.2MB. Free memory was 80.1MB in the beginning and 49.9MB in the end (delta: 30.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 908.80ms. Allocated memory is still 155.2MB. Free memory was 49.2MB in the beginning and 60.6MB in the end (delta: -11.4MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 685]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 58 locations, 59 edges, 7 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: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s 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, 28 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 28 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=89occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 23:49:16,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...