/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 FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread/fib_safe-7.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:20:49,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:20:49,861 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 21:20:49,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:20:49,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:20:49,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:20:49,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:20:49,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:20:49,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:20:49,889 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:20:49,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:20:49,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:20:49,889 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:20:49,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:20:49,889 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:20:49,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:20:49,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:20:49,889 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:20:49,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:20:49,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:20:49,890 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:49,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:20:49,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:49,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:20:49,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:20:49,891 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 21:20:50,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:20:50,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:20:50,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:20:50,130 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:20:50,131 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:20:50,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-7.i [2025-04-13 21:20:51,469 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c3ffbb0/a02cc906b8f04939b4b516e9dec0c297/FLAG05ecbbf93 [2025-04-13 21:20:51,751 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:20:51,752 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-7.i [2025-04-13 21:20:51,767 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c3ffbb0/a02cc906b8f04939b4b516e9dec0c297/FLAG05ecbbf93 [2025-04-13 21:20:52,518 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17c3ffbb0/a02cc906b8f04939b4b516e9dec0c297 [2025-04-13 21:20:52,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:20:52,522 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:20:52,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:20:52,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:20:52,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:20:52,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88d8c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52, skipping insertion in model container [2025-04-13 21:20:52,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,552 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:20:52,761 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/fib_safe-7.i[30241,30254] [2025-04-13 21:20:52,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:20:52,784 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:20:52,837 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/fib_safe-7.i[30241,30254] [2025-04-13 21:20:52,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:20:52,864 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:20:52,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52 WrapperNode [2025-04-13 21:20:52,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:20:52,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:20:52,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:20:52,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:20:52,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,894 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-04-13 21:20:52,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:20:52,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:20:52,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:20:52,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:20:52,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,915 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 21:20:52,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,921 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:20:52,929 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:20:52,930 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:20:52,930 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:20:52,930 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:52,961 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 21:20:52,967 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 21:20:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 21:20:52,982 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 21:20:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 21:20:52,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 21:20:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 21:20:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:20:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:20:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 21:20:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:20:52,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:20:52,984 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 21:20:53,065 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:20:53,066 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:20:53,167 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:20:53,168 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:20:53,168 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:20:53,270 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:20:53,272 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:20:53,275 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:20:53,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:20:53 BoogieIcfgContainer [2025-04-13 21:20:53,275 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:20:53,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:20:53,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:20:53,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:20:53,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:20:52" (1/3) ... [2025-04-13 21:20:53,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cb23f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:20:53, skipping insertion in model container [2025-04-13 21:20:53,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (2/3) ... [2025-04-13 21:20:53,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cb23f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:20:53, skipping insertion in model container [2025-04-13 21:20:53,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:20:53" (3/3) ... [2025-04-13 21:20:53,280 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2025-04-13 21:20:53,290 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:20:53,292 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-7.i that has 3 procedures, 21 locations, 23 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 21:20:53,292 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:20:53,322 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 21:20:53,340 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 58 flow [2025-04-13 21:20:53,356 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93 states, 92 states have (on average 3.2934782608695654) internal successors, (303), 92 states have internal predecessors, (303), 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 21:20:53,372 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:20:53,379 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;@67bb9d3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:20:53,379 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 21:20:53,382 INFO L278 IsEmpty]: Start isEmpty. Operand has 93 states, 92 states have (on average 3.2934782608695654) internal successors, (303), 92 states have internal predecessors, (303), 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 21:20:53,387 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 21:20:53,387 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:53,387 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:53,388 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:53,392 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1578653316, now seen corresponding path program 1 times [2025-04-13 21:20:53,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:53,399 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428133272] [2025-04-13 21:20:53,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:53,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 21:20:53,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 21:20:53,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:53,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:53,612 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 21:20:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:53,614 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428133272] [2025-04-13 21:20:53,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428133272] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:20:53,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:20:53,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 21:20:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347519832] [2025-04-13 21:20:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:20:53,618 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:20:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:53,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:20:53,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:20:53,633 INFO L87 Difference]: Start difference. First operand has 93 states, 92 states have (on average 3.2934782608695654) internal successors, (303), 92 states have internal predecessors, (303), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 21:20:53,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:53,705 INFO L93 Difference]: Finished difference Result 173 states and 570 transitions. [2025-04-13 21:20:53,706 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:20:53,707 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-04-13 21:20:53,707 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:53,714 INFO L225 Difference]: With dead ends: 173 [2025-04-13 21:20:53,717 INFO L226 Difference]: Without dead ends: 109 [2025-04-13 21:20:53,719 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:20:53,721 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:20:53,721 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 21:20:53,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-04-13 21:20:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-04-13 21:20:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 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 21:20:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 309 transitions. [2025-04-13 21:20:53,747 INFO L79 Accepts]: Start accepts. Automaton has 109 states and 309 transitions. Word has length 11 [2025-04-13 21:20:53,747 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:53,747 INFO L485 AbstractCegarLoop]: Abstraction has 109 states and 309 transitions. [2025-04-13 21:20:53,747 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 21:20:53,747 INFO L278 IsEmpty]: Start isEmpty. Operand 109 states and 309 transitions. [2025-04-13 21:20:53,748 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 21:20:53,748 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:53,748 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:53,748 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:20:53,748 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:53,749 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:53,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1693576751, now seen corresponding path program 1 times [2025-04-13 21:20:53,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:53,749 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123577890] [2025-04-13 21:20:53,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:53,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:53,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 21:20:53,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 21:20:53,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:53,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:53,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:53,852 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123577890] [2025-04-13 21:20:53,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123577890] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:53,853 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706359073] [2025-04-13 21:20:53,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:53,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:53,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:53,856 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) [2025-04-13 21:20:53,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 21:20:53,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 21:20:53,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 21:20:53,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:53,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:53,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-13 21:20:53,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:53,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:53,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706359073] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:53,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:53,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-04-13 21:20:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856502277] [2025-04-13 21:20:53,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:53,984 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 21:20:53,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:53,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 21:20:53,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 21:20:53,984 INFO L87 Difference]: Start difference. First operand 109 states and 309 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 21:20:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:54,072 INFO L93 Difference]: Finished difference Result 205 states and 629 transitions. [2025-04-13 21:20:54,073 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 21:20:54,073 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 12 [2025-04-13 21:20:54,073 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:54,075 INFO L225 Difference]: With dead ends: 205 [2025-04-13 21:20:54,075 INFO L226 Difference]: Without dead ends: 157 [2025-04-13 21:20:54,075 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 21:20:54,075 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:20:54,076 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:20:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-04-13 21:20:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-04-13 21:20:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.9038461538461537) internal successors, (453), 156 states have internal predecessors, (453), 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 21:20:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 453 transitions. [2025-04-13 21:20:54,089 INFO L79 Accepts]: Start accepts. Automaton has 157 states and 453 transitions. Word has length 12 [2025-04-13 21:20:54,089 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:54,089 INFO L485 AbstractCegarLoop]: Abstraction has 157 states and 453 transitions. [2025-04-13 21:20:54,089 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 21:20:54,089 INFO L278 IsEmpty]: Start isEmpty. Operand 157 states and 453 transitions. [2025-04-13 21:20:54,090 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 21:20:54,090 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:54,090 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:54,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 21:20:54,290 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:54,291 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:54,291 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash 328624452, now seen corresponding path program 2 times [2025-04-13 21:20:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:54,291 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555757899] [2025-04-13 21:20:54,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:20:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:54,298 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 21:20:54,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:20:54,317 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:20:54,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:54,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:54,401 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555757899] [2025-04-13 21:20:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555757899] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:54,401 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781096417] [2025-04-13 21:20:54,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:20:54,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:54,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:54,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:20:54,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 21:20:54,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 21:20:54,469 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:20:54,469 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:20:54,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:54,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 21:20:54,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:54,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781096417] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:54,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:54,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 21:20:54,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695292805] [2025-04-13 21:20:54,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:54,545 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 21:20:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:54,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 21:20:54,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-13 21:20:54,545 INFO L87 Difference]: Start difference. First operand 157 states and 453 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 21:20:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:54,682 INFO L93 Difference]: Finished difference Result 301 states and 965 transitions. [2025-04-13 21:20:54,682 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 21:20:54,683 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 15 [2025-04-13 21:20:54,683 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:54,685 INFO L225 Difference]: With dead ends: 301 [2025-04-13 21:20:54,685 INFO L226 Difference]: Without dead ends: 253 [2025-04-13 21:20:54,685 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-13 21:20:54,686 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 196 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:20:54,686 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:20:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-04-13 21:20:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2025-04-13 21:20:54,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.9404761904761907) internal successors, (741), 252 states have internal predecessors, (741), 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 21:20:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 741 transitions. [2025-04-13 21:20:54,733 INFO L79 Accepts]: Start accepts. Automaton has 253 states and 741 transitions. Word has length 15 [2025-04-13 21:20:54,734 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:54,734 INFO L485 AbstractCegarLoop]: Abstraction has 253 states and 741 transitions. [2025-04-13 21:20:54,734 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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 21:20:54,734 INFO L278 IsEmpty]: Start isEmpty. Operand 253 states and 741 transitions. [2025-04-13 21:20:54,735 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 21:20:54,735 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:54,735 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:54,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 21:20:54,939 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-04-13 21:20:54,939 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:54,939 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2090552988, now seen corresponding path program 3 times [2025-04-13 21:20:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:54,940 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507883921] [2025-04-13 21:20:54,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:20:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:54,946 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 21:20:54,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:20:54,978 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 21:20:54,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:55,159 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507883921] [2025-04-13 21:20:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507883921] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:55,159 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517317744] [2025-04-13 21:20:55,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:20:55,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:55,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:20:55,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 21:20:55,196 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 21:20:55,216 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:20:55,216 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 21:20:55,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:55,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 21:20:55,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:55,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:55,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517317744] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:55,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:55,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2025-04-13 21:20:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031413386] [2025-04-13 21:20:55,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:55,371 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 21:20:55,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:55,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 21:20:55,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2025-04-13 21:20:55,372 INFO L87 Difference]: Start difference. First operand 253 states and 741 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 21:20:55,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:55,572 INFO L93 Difference]: Finished difference Result 397 states and 1253 transitions. [2025-04-13 21:20:55,572 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 21:20:55,572 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 21 [2025-04-13 21:20:55,573 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:55,575 INFO L225 Difference]: With dead ends: 397 [2025-04-13 21:20:55,575 INFO L226 Difference]: Without dead ends: 349 [2025-04-13 21:20:55,577 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2025-04-13 21:20:55,578 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 244 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:20:55,578 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 0 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 21:20:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2025-04-13 21:20:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2025-04-13 21:20:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.956896551724138) internal successors, (1029), 348 states have internal predecessors, (1029), 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 21:20:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1029 transitions. [2025-04-13 21:20:55,607 INFO L79 Accepts]: Start accepts. Automaton has 349 states and 1029 transitions. Word has length 21 [2025-04-13 21:20:55,607 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:55,607 INFO L485 AbstractCegarLoop]: Abstraction has 349 states and 1029 transitions. [2025-04-13 21:20:55,608 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 21:20:55,608 INFO L278 IsEmpty]: Start isEmpty. Operand 349 states and 1029 transitions. [2025-04-13 21:20:55,612 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:20:55,612 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:55,612 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:55,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-13 21:20:55,818 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:55,818 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:55,818 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:55,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1104911996, now seen corresponding path program 4 times [2025-04-13 21:20:55,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:55,819 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673786462] [2025-04-13 21:20:55,819 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:20:55,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:55,825 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:20:55,842 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:20:55,842 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:20:55,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:56,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:56,819 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673786462] [2025-04-13 21:20:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673786462] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:56,819 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155515092] [2025-04-13 21:20:56,819 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:20:56,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:56,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:56,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:20:56,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 21:20:56,857 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:20:56,879 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:20:56,880 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:20:56,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:56,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-04-13 21:20:56,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:57,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:58,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155515092] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:58,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:58,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 21:20:58,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029785175] [2025-04-13 21:20:58,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:58,825 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 21:20:58,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:58,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 21:20:58,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=3462, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 21:20:58,828 INFO L87 Difference]: Start difference. First operand 349 states and 1029 transitions. Second operand has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 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 21:21:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:21:58,271 INFO L93 Difference]: Finished difference Result 25230 states and 75838 transitions. [2025-04-13 21:21:58,271 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 564 states. [2025-04-13 21:21:58,272 INFO L79 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 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 27 [2025-04-13 21:21:58,272 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:21:58,397 INFO L225 Difference]: With dead ends: 25230 [2025-04-13 21:21:58,397 INFO L226 Difference]: Without dead ends: 22906 [2025-04-13 21:21:58,436 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 607 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175934 ImplicationChecksByTransitivity, 52.0s TimeCoverageRelationStatistics Valid=72398, Invalid=297874, Unknown=0, NotChecked=0, Total=370272 [2025-04-13 21:21:58,438 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 3403 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8984 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3403 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 8984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:21:58,438 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3403 Valid, 0 Invalid, 9626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 8984 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-04-13 21:21:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22906 states. [2025-04-13 21:21:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22906 to 8894. [2025-04-13 21:21:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8894 states, 8893 states have (on average 3.0955807938828293) internal successors, (27529), 8893 states have internal predecessors, (27529), 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 21:21:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8894 states to 8894 states and 27529 transitions. [2025-04-13 21:21:59,722 INFO L79 Accepts]: Start accepts. Automaton has 8894 states and 27529 transitions. Word has length 27 [2025-04-13 21:21:59,723 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:21:59,723 INFO L485 AbstractCegarLoop]: Abstraction has 8894 states and 27529 transitions. [2025-04-13 21:21:59,723 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 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 21:21:59,723 INFO L278 IsEmpty]: Start isEmpty. Operand 8894 states and 27529 transitions. [2025-04-13 21:21:59,731 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 21:21:59,732 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:21:59,732 INFO L218 NwaCegarLoop]: trace histogram [16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:21:59,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 21:21:59,934 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:21:59,935 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:21:59,935 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:21:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1747275641, now seen corresponding path program 1 times [2025-04-13 21:21:59,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:21:59,935 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762193423] [2025-04-13 21:21:59,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:21:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:21:59,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 21:21:59,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:21:59,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:21:59,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:22:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:00,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:22:00,769 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762193423] [2025-04-13 21:22:00,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762193423] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:22:00,769 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681125272] [2025-04-13 21:22:00,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:22:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:22:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:22:00,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:22:00,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-13 21:22:00,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 21:22:00,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:22:00,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:22:00,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:22:00,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 21:22:00,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:22:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 105 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:01,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:22:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:02,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681125272] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:22:02,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:22:02,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 21:22:02,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183632440] [2025-04-13 21:22:02,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:22:02,497 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 21:22:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:22:02,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 21:22:02,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=4297, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 21:22:02,499 INFO L87 Difference]: Start difference. First operand 8894 states and 27529 transitions. Second operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:23:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:23:11,505 INFO L93 Difference]: Finished difference Result 75688 states and 239178 transitions. [2025-04-13 21:23:11,506 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 444 states. [2025-04-13 21:23:11,506 INFO L79 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 31 [2025-04-13 21:23:11,506 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:23:11,792 INFO L225 Difference]: With dead ends: 75688 [2025-04-13 21:23:11,792 INFO L226 Difference]: Without dead ends: 74363 [2025-04-13 21:23:11,829 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 505 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112793 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=48742, Invalid=207800, Unknown=0, NotChecked=0, Total=256542 [2025-04-13 21:23:11,829 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 4887 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6766 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4887 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 6766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:23:11,830 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4887 Valid, 0 Invalid, 7750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [984 Valid, 6766 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-04-13 21:23:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74363 states. [2025-04-13 21:23:25,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74363 to 59920. [2025-04-13 21:23:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59920 states, 59919 states have (on average 3.3287271149385003) internal successors, (199454), 59919 states have internal predecessors, (199454), 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 21:23:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59920 states to 59920 states and 199454 transitions. [2025-04-13 21:23:26,058 INFO L79 Accepts]: Start accepts. Automaton has 59920 states and 199454 transitions. Word has length 31 [2025-04-13 21:23:26,059 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:23:26,059 INFO L485 AbstractCegarLoop]: Abstraction has 59920 states and 199454 transitions. [2025-04-13 21:23:26,060 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:23:26,060 INFO L278 IsEmpty]: Start isEmpty. Operand 59920 states and 199454 transitions. [2025-04-13 21:23:26,103 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 21:23:26,103 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:23:26,104 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:23:26,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 21:23:26,311 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:23:26,311 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:23:26,312 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:23:26,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1414649622, now seen corresponding path program 1 times [2025-04-13 21:23:26,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:23:26,312 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373798896] [2025-04-13 21:23:26,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:23:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:23:26,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 21:23:26,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:23:26,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:23:26,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:23:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:23:27,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:23:27,069 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373798896] [2025-04-13 21:23:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373798896] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:23:27,069 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917893666] [2025-04-13 21:23:27,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:23:27,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:23:27,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:23:27,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:23:27,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-13 21:23:27,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 21:23:27,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:23:27,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:23:27,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:23:27,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 21:23:27,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:23:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:23:27,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:23:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:23:28,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917893666] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:23:28,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:23:28,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 21:23:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959394368] [2025-04-13 21:23:28,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:23:28,747 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 21:23:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:23:28,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 21:23:28,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=4325, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 21:23:28,748 INFO L87 Difference]: Start difference. First operand 59920 states and 199454 transitions. Second operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:24:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:24:04,065 INFO L93 Difference]: Finished difference Result 90286 states and 296193 transitions. [2025-04-13 21:24:04,066 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2025-04-13 21:24:04,066 INFO L79 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 31 [2025-04-13 21:24:04,066 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:24:04,526 INFO L225 Difference]: With dead ends: 90286 [2025-04-13 21:24:04,526 INFO L226 Difference]: Without dead ends: 90100 [2025-04-13 21:24:04,557 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10477 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=6036, Invalid=28746, Unknown=0, NotChecked=0, Total=34782 [2025-04-13 21:24:04,558 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1520 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5634 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 5634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:24:04,558 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 0 Invalid, 6019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 5634 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-04-13 21:24:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90100 states. [2025-04-13 21:24:22,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90100 to 69846. [2025-04-13 21:24:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69846 states, 69845 states have (on average 3.4117545994702554) internal successors, (238294), 69845 states have internal predecessors, (238294), 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 21:24:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69846 states to 69846 states and 238294 transitions. [2025-04-13 21:24:22,583 INFO L79 Accepts]: Start accepts. Automaton has 69846 states and 238294 transitions. Word has length 31 [2025-04-13 21:24:22,583 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:24:22,583 INFO L485 AbstractCegarLoop]: Abstraction has 69846 states and 238294 transitions. [2025-04-13 21:24:22,583 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:24:22,583 INFO L278 IsEmpty]: Start isEmpty. Operand 69846 states and 238294 transitions. [2025-04-13 21:24:22,621 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 21:24:22,621 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:24:22,621 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:24:22,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-13 21:24:22,826 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:24:22,826 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:24:22,826 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:24:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1903029822, now seen corresponding path program 2 times [2025-04-13 21:24:22,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:24:22,826 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742429112] [2025-04-13 21:24:22,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:24:22,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:24:22,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 21:24:22,842 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:24:22,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:24:22,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:24:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:24:23,502 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742429112] [2025-04-13 21:24:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742429112] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:24:23,502 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490760686] [2025-04-13 21:24:23,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:24:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:24:23,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:24:23,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:24:23,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-13 21:24:23,542 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 21:24:23,562 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:24:23,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:24:23,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:24:23,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 21:24:23,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:24:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:24,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:24:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:25,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490760686] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:24:25,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:24:25,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 21:24:25,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123264403] [2025-04-13 21:24:25,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:24:25,029 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 21:24:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:24:25,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 21:24:25,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=4298, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 21:24:25,030 INFO L87 Difference]: Start difference. First operand 69846 states and 238294 transitions. Second operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:25:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:25:15,696 INFO L93 Difference]: Finished difference Result 110537 states and 368602 transitions. [2025-04-13 21:25:15,696 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2025-04-13 21:25:15,696 INFO L79 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 31 [2025-04-13 21:25:15,696 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:25:16,118 INFO L225 Difference]: With dead ends: 110537 [2025-04-13 21:25:16,118 INFO L226 Difference]: Without dead ends: 110285 [2025-04-13 21:25:16,157 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14231 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=8201, Invalid=35689, Unknown=0, NotChecked=0, Total=43890 [2025-04-13 21:25:16,157 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1595 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5972 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:25:16,157 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 0 Invalid, 6406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5972 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-04-13 21:25:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110285 states. [2025-04-13 21:25:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110285 to 83130. [2025-04-13 21:25:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83130 states, 83129 states have (on average 3.518916382971045) internal successors, (292524), 83129 states have internal predecessors, (292524), 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 21:25:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83130 states to 83130 states and 292524 transitions. [2025-04-13 21:25:37,998 INFO L79 Accepts]: Start accepts. Automaton has 83130 states and 292524 transitions. Word has length 31 [2025-04-13 21:25:37,999 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:25:37,999 INFO L485 AbstractCegarLoop]: Abstraction has 83130 states and 292524 transitions. [2025-04-13 21:25:37,999 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:25:37,999 INFO L278 IsEmpty]: Start isEmpty. Operand 83130 states and 292524 transitions. [2025-04-13 21:25:38,057 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 21:25:38,057 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:25:38,057 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:25:38,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-13 21:25:38,260 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:25:38,260 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:25:38,260 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:25:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash 737014778, now seen corresponding path program 3 times [2025-04-13 21:25:38,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:25:38,261 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322352789] [2025-04-13 21:25:38,261 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:25:38,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:25:38,266 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 9 equivalence classes. [2025-04-13 21:25:38,295 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:25:38,295 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-04-13 21:25:38,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:25:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:25:39,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:25:39,350 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322352789] [2025-04-13 21:25:39,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322352789] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:25:39,350 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786584003] [2025-04-13 21:25:39,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:25:39,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:25:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:25:39,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:25:39,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 21:25:39,392 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 9 equivalence classes. [2025-04-13 21:25:39,417 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:25:39,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-04-13 21:25:39,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:25:39,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 21:25:39,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:25:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 105 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:25:40,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:25:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:25:40,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786584003] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:25:40,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:25:40,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 21:25:40,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086549187] [2025-04-13 21:25:40,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:25:40,872 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 21:25:40,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:25:40,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 21:25:40,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=667, Invalid=4303, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 21:25:40,873 INFO L87 Difference]: Start difference. First operand 83130 states and 292524 transitions. Second operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:27:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:27:03,869 INFO L93 Difference]: Finished difference Result 168664 states and 586383 transitions. [2025-04-13 21:27:03,870 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2025-04-13 21:27:03,870 INFO L79 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 31 [2025-04-13 21:27:03,870 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:27:04,586 INFO L225 Difference]: With dead ends: 168664 [2025-04-13 21:27:04,587 INFO L226 Difference]: Without dead ends: 168338 [2025-04-13 21:27:04,650 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18542 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=10235, Invalid=44755, Unknown=0, NotChecked=0, Total=54990 [2025-04-13 21:27:04,650 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1663 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6713 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 6713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 21:27:04,650 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 0 Invalid, 7199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 6713 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 21:27:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168338 states. [2025-04-13 21:27:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168338 to 126867. [2025-04-13 21:27:46,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126867 states, 126866 states have (on average 3.699139249286649) internal successors, (469295), 126866 states have internal predecessors, (469295), 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 21:27:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126867 states to 126867 states and 469295 transitions. [2025-04-13 21:27:47,647 INFO L79 Accepts]: Start accepts. Automaton has 126867 states and 469295 transitions. Word has length 31 [2025-04-13 21:27:47,647 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:27:47,647 INFO L485 AbstractCegarLoop]: Abstraction has 126867 states and 469295 transitions. [2025-04-13 21:27:47,648 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:27:47,648 INFO L278 IsEmpty]: Start isEmpty. Operand 126867 states and 469295 transitions. [2025-04-13 21:27:47,749 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 21:27:47,749 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:27:47,749 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:27:47,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 21:27:47,953 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-04-13 21:27:47,953 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:27:47,953 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:27:47,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1050116838, now seen corresponding path program 4 times [2025-04-13 21:27:47,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:27:47,954 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677754164] [2025-04-13 21:27:47,954 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:27:47,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:27:47,959 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-13 21:27:47,966 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:27:47,966 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:27:47,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:27:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:27:48,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:27:48,608 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677754164] [2025-04-13 21:27:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677754164] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:27:48,608 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875523211] [2025-04-13 21:27:48,608 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:27:48,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:27:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:27:48,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:27:48,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 21:27:48,649 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-13 21:27:48,671 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 21:27:48,671 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:27:48,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:27:48,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 21:27:48,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:27:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:27:49,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:27:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:27:50,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875523211] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:27:50,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:27:50,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 21:27:50,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9362792] [2025-04-13 21:27:50,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:27:50,221 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 21:27:50,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:27:50,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 21:27:50,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=752, Invalid=4218, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 21:27:50,222 INFO L87 Difference]: Start difference. First operand 126867 states and 469295 transitions. Second operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 21:31:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:31:41,060 INFO L93 Difference]: Finished difference Result 318723 states and 1196271 transitions. [2025-04-13 21:31:41,061 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 454 states. [2025-04-13 21:31:41,061 INFO L79 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 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 31 [2025-04-13 21:31:41,062 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:31:43,817 INFO L225 Difference]: With dead ends: 318723 [2025-04-13 21:31:43,817 INFO L226 Difference]: Without dead ends: 318239 [2025-04-13 21:31:44,076 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 503 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108322 ImplicationChecksByTransitivity, 54.3s TimeCoverageRelationStatistics Valid=47001, Invalid=207519, Unknown=0, NotChecked=0, Total=254520 [2025-04-13 21:31:44,085 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 2644 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14714 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2644 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 14714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:31:44,085 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2644 Valid, 0 Invalid, 15261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [547 Valid, 14714 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2025-04-13 21:31:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318239 states. [2025-04-13 21:33:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318239 to 213184. Received shutdown request... [2025-04-13 21:33:06,178 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 21:33:06,181 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 21:33:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213184 states, 213183 states have (on average 3.901558754684942) internal successors, (831746), 213183 states have internal predecessors, (831746), 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 21:33:07,074 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 21:33:07,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-13 21:33:07,265 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 [2025-04-13 21:33:07,277 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-04-13 21:33:07,278 WARN L610 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2025-04-13 21:33:07,292 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 21:33:07,292 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 21:33:07,301 INFO L422 BasicCegarLoop]: Path program histogram: [4, 4, 1, 1] [2025-04-13 21:33:07,305 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 21:33:07,305 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 21:33:07,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 09:33:07 BasicIcfg [2025-04-13 21:33:07,313 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 21:33:07,314 INFO L158 Benchmark]: Toolchain (without parser) took 734790.97ms. Allocated memory was 142.6MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 104.0MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. [2025-04-13 21:33:07,314 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:33:07,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.21ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 81.6MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 21:33:07,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.80ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 79.8MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 21:33:07,315 INFO L158 Benchmark]: Boogie Preprocessor took 33.62ms. Allocated memory is still 142.6MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:33:07,315 INFO L158 Benchmark]: IcfgBuilder took 345.53ms. Allocated memory is still 142.6MB. Free memory was 78.1MB in the beginning and 51.4MB in the end (delta: 26.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2025-04-13 21:33:07,315 INFO L158 Benchmark]: TraceAbstraction took 734036.66ms. Allocated memory was 142.6MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 51.4MB in the beginning and 3.3GB in the end (delta: -3.3GB). Peak memory consumption was 4.7GB. Max. memory is 8.0GB. [2025-04-13 21:33:07,317 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 341.21ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 81.6MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.80ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 79.8MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.62ms. Allocated memory is still 142.6MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 345.53ms. Allocated memory is still 142.6MB. Free memory was 78.1MB in the beginning and 51.4MB in the end (delta: 26.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 734036.66ms. Allocated memory was 142.6MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 51.4MB in the beginning and 3.3GB in the end (delta: -3.3GB). Peak memory consumption was 4.7GB. 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 - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 31 locations, 37 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 734.0s, OverallIterations: 10, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.3s, AutomataDifference: 534.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16240 SdHoareTripleChecker+Valid, 22.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16240 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 18.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3492 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49184 IncrementalHoareTripleChecker+Invalid, 52676 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3492 mSolverCounterUnsat, 0 mSDtfsCounter, 49184 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2438 GetRequests, 157 SyntacticMatches, 6 SemanticMatches, 2275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440404 ImplicationChecksByTransitivity, 191.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126867occurred in iteration=9, InterpolantAutomatonStates: 1944, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 181.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 117335 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 471 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 673 ConstructedInterpolants, 0 QuantifiedInterpolants, 8599 SizeOfPredicates, 120 NumberOfNonLiveVariables, 1913 ConjunctsInSsa, 385 ConjunctsInUnsatCore, 28 InterpolantComputations, 1 PerfectInterpolantSequences, 630/2475 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown