/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.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:06:48,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:06:48,956 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 18:06:48,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:06:48,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:06:48,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:06:48,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:06:48,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:06:48,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:06:48,979 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:06:48,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:06:48,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:06:48,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:06:48,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:06:48,981 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:06:48,981 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:06:48,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:06:48,981 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:06:48,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:06:48,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:06:48,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:06:48,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:06:48,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:06:48,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:06:48,982 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 -> FINITE_AUTOMATA [2025-04-13 18:06:49,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:06:49,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:06:49,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:06:49,221 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:06:49,223 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:06:49,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2025-04-13 18:06:50,458 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2151f9a/5afca0307e0e491cbc1f0dbbe6cba82e/FLAG30ea155da [2025-04-13 18:06:50,648 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:06:50,648 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2025-04-13 18:06:50,659 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2151f9a/5afca0307e0e491cbc1f0dbbe6cba82e/FLAG30ea155da [2025-04-13 18:06:51,459 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2151f9a/5afca0307e0e491cbc1f0dbbe6cba82e [2025-04-13 18:06:51,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:06:51,464 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:06:51,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:06:51,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:06:51,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:06:51,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db589ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51, skipping insertion in model container [2025-04-13 18:06:51,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,483 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:06:51,645 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2082,2095] [2025-04-13 18:06:51,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:06:51,657 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:06:51,686 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2082,2095] [2025-04-13 18:06:51,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:06:51,698 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:06:51,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51 WrapperNode [2025-04-13 18:06:51,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:06:51,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:06:51,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:06:51,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:06:51,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,726 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2025-04-13 18:06:51,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:06:51,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:06:51,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:06:51,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:06:51,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,744 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 18:06:51,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,747 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:06:51,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:06:51,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:06:51,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:06:51,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (1/1) ... [2025-04-13 18:06:51,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:06:51,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:51,780 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 18:06:51,782 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 18:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:06:51,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:06:51,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 18:06:51,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 18:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:06:51,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:06:51,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:06:51,800 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 18:06:51,867 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:06:51,869 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:06:51,998 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:06:51,998 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:06:51,999 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:06:52,114 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 18:06:52,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:06:52 BoogieIcfgContainer [2025-04-13 18:06:52,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:06:52,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:06:52,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:06:52,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:06:52,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:06:51" (1/3) ... [2025-04-13 18:06:52,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9ba76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:06:52, skipping insertion in model container [2025-04-13 18:06:52,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:06:51" (2/3) ... [2025-04-13 18:06:52,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9ba76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:06:52, skipping insertion in model container [2025-04-13 18:06:52,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:06:52" (3/3) ... [2025-04-13 18:06:52,126 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2025-04-13 18:06:52,137 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:06:52,138 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-simple-equiv.wvr.c that has 4 procedures, 25 locations, 21 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 18:06:52,138 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:06:52,178 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 18:06:52,203 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 24 transitions, 69 flow [2025-04-13 18:06:52,229 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 120 states, 119 states have (on average 2.361344537815126) internal successors, (281), 119 states have internal predecessors, (281), 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 18:06:52,249 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:06:52,257 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=FINITE_AUTOMATA, 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;@68f57fe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:06:52,257 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 18:06:52,259 INFO L278 IsEmpty]: Start isEmpty. Operand has 120 states, 119 states have (on average 2.361344537815126) internal successors, (281), 119 states have internal predecessors, (281), 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 18:06:52,263 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 18:06:52,264 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:52,264 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:52,265 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:06:52,268 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:52,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1365959741, now seen corresponding path program 1 times [2025-04-13 18:06:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:52,274 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178357572] [2025-04-13 18:06:52,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:06:52,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:52,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 18:06:52,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:06:52,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:52,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:52,782 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 18:06:52,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:52,785 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178357572] [2025-04-13 18:06:52,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178357572] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:52,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:52,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:06:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552510516] [2025-04-13 18:06:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:52,790 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:06:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:52,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:06:52,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:06:52,804 INFO L87 Difference]: Start difference. First operand has 120 states, 119 states have (on average 2.361344537815126) internal successors, (281), 119 states have internal predecessors, (281), 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) Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 18:06:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:52,933 INFO L93 Difference]: Finished difference Result 133 states and 299 transitions. [2025-04-13 18:06:52,934 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:06:52,935 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) Word has length 20 [2025-04-13 18:06:52,935 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:52,942 INFO L225 Difference]: With dead ends: 133 [2025-04-13 18:06:52,942 INFO L226 Difference]: Without dead ends: 101 [2025-04-13 18:06:52,944 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:06:52,947 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:52,948 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:06:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-04-13 18:06:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2025-04-13 18:06:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.21) internal successors, (221), 100 states have internal predecessors, (221), 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 18:06:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 221 transitions. [2025-04-13 18:06:52,978 INFO L79 Accepts]: Start accepts. Automaton has 101 states and 221 transitions. Word has length 20 [2025-04-13 18:06:52,979 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:52,979 INFO L485 AbstractCegarLoop]: Abstraction has 101 states and 221 transitions. [2025-04-13 18:06:52,979 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 18:06:52,979 INFO L278 IsEmpty]: Start isEmpty. Operand 101 states and 221 transitions. [2025-04-13 18:06:52,980 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 18:06:52,980 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:52,980 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:52,980 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:06:52,980 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:06:52,981 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:52,982 INFO L85 PathProgramCache]: Analyzing trace with hash -122984687, now seen corresponding path program 2 times [2025-04-13 18:06:52,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:52,982 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439398750] [2025-04-13 18:06:52,982 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:06:52,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:52,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-13 18:06:53,008 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:06:53,008 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 18:06:53,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:53,187 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 18:06:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:53,188 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439398750] [2025-04-13 18:06:53,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439398750] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:53,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:53,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:06:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372535423] [2025-04-13 18:06:53,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:53,189 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:06:53,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:53,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:06:53,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:06:53,190 INFO L87 Difference]: Start difference. First operand 101 states and 221 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 18:06:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:53,307 INFO L93 Difference]: Finished difference Result 132 states and 275 transitions. [2025-04-13 18:06:53,307 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:06:53,307 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) Word has length 20 [2025-04-13 18:06:53,307 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:53,309 INFO L225 Difference]: With dead ends: 132 [2025-04-13 18:06:53,309 INFO L226 Difference]: Without dead ends: 63 [2025-04-13 18:06:53,322 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:06:53,323 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:53,323 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 19 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:06:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-04-13 18:06:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2025-04-13 18:06:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.935483870967742) internal successors, (120), 62 states have internal predecessors, (120), 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 18:06:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 120 transitions. [2025-04-13 18:06:53,328 INFO L79 Accepts]: Start accepts. Automaton has 63 states and 120 transitions. Word has length 20 [2025-04-13 18:06:53,328 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:53,329 INFO L485 AbstractCegarLoop]: Abstraction has 63 states and 120 transitions. [2025-04-13 18:06:53,329 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 18:06:53,329 INFO L278 IsEmpty]: Start isEmpty. Operand 63 states and 120 transitions. [2025-04-13 18:06:53,329 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 18:06:53,329 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:53,329 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:53,329 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 18:06:53,329 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 18:06:53,330 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash -821443421, now seen corresponding path program 3 times [2025-04-13 18:06:53,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:53,330 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647559877] [2025-04-13 18:06:53,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:06:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:53,335 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 1 equivalence classes. [2025-04-13 18:06:53,344 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 18:06:53,344 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 18:06:53,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:53,483 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 18:06:53,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:53,484 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647559877] [2025-04-13 18:06:53,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647559877] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:06:53,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:06:53,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:06:53,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662463648] [2025-04-13 18:06:53,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:06:53,484 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:06:53,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:53,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:06:53,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:06:53,485 INFO L87 Difference]: Start difference. First operand 63 states and 120 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 18:06:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:53,549 INFO L93 Difference]: Finished difference Result 63 states and 120 transitions. [2025-04-13 18:06:53,549 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:06:53,549 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) Word has length 20 [2025-04-13 18:06:53,549 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:53,549 INFO L225 Difference]: With dead ends: 63 [2025-04-13 18:06:53,549 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 18:06:53,550 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:06:53,550 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:53,550 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:06:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 18:06:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 18:06:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 18:06:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 18:06:53,551 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2025-04-13 18:06:53,551 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:53,551 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 18:06:53,551 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 18:06:53,551 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 18:06:53,551 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 18:06:53,554 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 18:06:53,554 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 18:06:53,555 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 18:06:53,555 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 18:06:53,555 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:06:53,557 INFO L422 BasicCegarLoop]: Path program histogram: [3] [2025-04-13 18:06:53,558 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:06:53,558 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:06:53,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:06:53 BasicIcfg [2025-04-13 18:06:53,562 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:06:53,562 INFO L158 Benchmark]: Toolchain (without parser) took 2098.62ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 75.0MB in the end (delta: 32.0MB). Peak memory consumption was 30.7MB. Max. memory is 8.0GB. [2025-04-13 18:06:53,564 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:06:53,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.20ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 92.7MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 18:06:53,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.46ms. Allocated memory is still 155.2MB. Free memory was 92.7MB in the beginning and 91.2MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:06:53,564 INFO L158 Benchmark]: Boogie Preprocessor took 25.98ms. Allocated memory is still 155.2MB. Free memory was 91.2MB in the beginning and 89.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:06:53,564 INFO L158 Benchmark]: RCFGBuilder took 365.03ms. Allocated memory is still 155.2MB. Free memory was 89.9MB in the beginning and 68.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 18:06:53,564 INFO L158 Benchmark]: TraceAbstraction took 1441.68ms. Allocated memory is still 155.2MB. Free memory was 68.2MB in the beginning and 75.0MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:06:53,565 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.20ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 92.7MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.46ms. Allocated memory is still 155.2MB. Free memory was 92.7MB in the beginning and 91.2MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.98ms. Allocated memory is still 155.2MB. Free memory was 91.2MB in the beginning and 89.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 365.03ms. Allocated memory is still 155.2MB. Free memory was 89.9MB in the beginning and 68.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1441.68ms. Allocated memory is still 155.2MB. Free memory was 68.2MB in the beginning and 75.0MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 77]: 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, 38 locations, 37 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 295 IncrementalHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 19 mSDtfsCounter, 295 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 18:06:53,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...