/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_unsafe-5.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:20:49,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:20:49,730 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 21:20:49,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:20:49,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:20:49,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:20:49,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:20:49,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:20:49,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:20:49,754 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:20:49,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:20:49,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:20:49,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:20:49,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:20:49,754 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:20:49,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:20:49,755 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:20:49,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:20:49,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:20:49,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:49,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:20:49,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:20:49,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:20:49,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:20:49,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:49,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:20:49,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:20:49,758 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:20:49,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:20:49,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:20:49,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:20:49,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:20:49,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:20:49,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:20:49,758 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 21:20:49,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:20:49,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:20:49,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:20:49,991 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:20:49,992 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:20:49,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-5.i [2025-04-13 21:20:51,322 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4580d4ffe/515b9ef67cc74c7689828ee29345ae9c/FLAG23daa2189 [2025-04-13 21:20:51,569 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:20:51,570 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-5.i [2025-04-13 21:20:51,583 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4580d4ffe/515b9ef67cc74c7689828ee29345ae9c/FLAG23daa2189 [2025-04-13 21:20:53,421 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4580d4ffe/515b9ef67cc74c7689828ee29345ae9c [2025-04-13 21:20:53,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:20:53,424 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:20:53,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:20:53,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:20:53,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:20:53,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0b36fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53, skipping insertion in model container [2025-04-13 21:20:53,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:20:53,662 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_unsafe-5.i[30243,30256] [2025-04-13 21:20:53,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:20:53,683 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:20:53,733 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_unsafe-5.i[30243,30256] [2025-04-13 21:20:53,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:20:53,756 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:20:53,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53 WrapperNode [2025-04-13 21:20:53,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:20:53,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:20:53,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:20:53,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:20:53,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,787 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-04-13 21:20:53,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:20:53,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:20:53,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:20:53,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:20:53,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,814 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 21:20:53,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,818 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:20:53,832 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:20:53,832 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:20:53,832 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:20:53,833 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (1/1) ... [2025-04-13 21:20:53,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:53,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:53,863 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 21:20:53,866 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 21:20:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 21:20:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 21:20:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 21:20:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 21:20:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 21:20:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:20:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:20:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 21:20:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:20:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:20:53,887 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 21:20:53,991 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:20:53,992 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:20:54,102 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:20:54,103 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:20:54,103 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:20:54,225 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:20:54,227 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:20:54,232 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:20:54,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:20:54 BoogieIcfgContainer [2025-04-13 21:20:54,233 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:20:54,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:20:54,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:20:54,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:20:54,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:20:53" (1/3) ... [2025-04-13 21:20:54,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17884d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:20:54, skipping insertion in model container [2025-04-13 21:20:54,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:53" (2/3) ... [2025-04-13 21:20:54,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17884d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:20:54, skipping insertion in model container [2025-04-13 21:20:54,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:20:54" (3/3) ... [2025-04-13 21:20:54,242 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2025-04-13 21:20:54,251 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:20:54,252 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-5.i that has 3 procedures, 21 locations, 23 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 21:20:54,253 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:20:54,286 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 21:20:54,305 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 58 flow [2025-04-13 21:20:54,320 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 21:20:54,341 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:20:54,351 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;@8780c6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:20:54,351 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 21:20:54,353 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 21:20:54,359 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 21:20:54,359 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:54,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:54,360 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 21:20:54,363 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1578653316, now seen corresponding path program 1 times [2025-04-13 21:20:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:54,371 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682254026] [2025-04-13 21:20:54,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:54,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:54,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 21:20:54,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 21:20:54,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:54,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:54,559 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 21:20:54,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:54,560 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682254026] [2025-04-13 21:20:54,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682254026] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:20:54,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:20:54,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 21:20:54,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295211289] [2025-04-13 21:20:54,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:20:54,567 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:20:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:54,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:20:54,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:20:54,582 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 21:20:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:54,663 INFO L93 Difference]: Finished difference Result 173 states and 570 transitions. [2025-04-13 21:20:54,664 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:20:54,665 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 21:20:54,665 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:54,670 INFO L225 Difference]: With dead ends: 173 [2025-04-13 21:20:54,670 INFO L226 Difference]: Without dead ends: 109 [2025-04-13 21:20:54,674 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 21:20:54,676 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, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:20:54,676 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:20:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-04-13 21:20:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-04-13 21:20:54,715 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 21:20:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 309 transitions. [2025-04-13 21:20:54,719 INFO L79 Accepts]: Start accepts. Automaton has 109 states and 309 transitions. Word has length 11 [2025-04-13 21:20:54,719 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:54,719 INFO L485 AbstractCegarLoop]: Abstraction has 109 states and 309 transitions. [2025-04-13 21:20:54,719 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 21:20:54,719 INFO L278 IsEmpty]: Start isEmpty. Operand 109 states and 309 transitions. [2025-04-13 21:20:54,720 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 21:20:54,720 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:54,720 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:54,720 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:20:54,720 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 21:20:54,720 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:54,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1693576751, now seen corresponding path program 1 times [2025-04-13 21:20:54,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:54,720 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168913037] [2025-04-13 21:20:54,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:54,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:54,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 21:20:54,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 21:20:54,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:54,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:54,814 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 21:20:54,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:54,814 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168913037] [2025-04-13 21:20:54,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168913037] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:54,814 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257964265] [2025-04-13 21:20:54,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:54,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:54,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:54,816 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 21:20:54,817 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 21:20:54,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 21:20:54,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 21:20:54,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:54,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:54,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-13 21:20:54,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:54,905 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 21:20:54,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:54,927 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 21:20:54,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257964265] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:54,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:54,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-04-13 21:20:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293615354] [2025-04-13 21:20:54,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:54,928 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 21:20:54,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:54,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 21:20:54,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 21:20:54,929 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 21:20:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:55,016 INFO L93 Difference]: Finished difference Result 205 states and 629 transitions. [2025-04-13 21:20:55,018 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 21:20:55,018 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 21:20:55,018 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:55,019 INFO L225 Difference]: With dead ends: 205 [2025-04-13 21:20:55,019 INFO L226 Difference]: Without dead ends: 157 [2025-04-13 21:20:55,020 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 21:20:55,020 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 21:20:55,020 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 21:20:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-04-13 21:20:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-04-13 21:20:55,029 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 21:20:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 453 transitions. [2025-04-13 21:20:55,030 INFO L79 Accepts]: Start accepts. Automaton has 157 states and 453 transitions. Word has length 12 [2025-04-13 21:20:55,031 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:55,031 INFO L485 AbstractCegarLoop]: Abstraction has 157 states and 453 transitions. [2025-04-13 21:20:55,031 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 21:20:55,031 INFO L278 IsEmpty]: Start isEmpty. Operand 157 states and 453 transitions. [2025-04-13 21:20:55,031 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 21:20:55,031 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:55,032 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:55,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 21:20:55,236 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 21:20:55,236 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 21:20:55,236 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash 328624452, now seen corresponding path program 2 times [2025-04-13 21:20:55,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:55,236 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409415620] [2025-04-13 21:20:55,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:20:55,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:55,243 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 21:20:55,254 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:20:55,254 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:20:55,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:55,370 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 21:20:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:55,370 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409415620] [2025-04-13 21:20:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409415620] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:55,370 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892030747] [2025-04-13 21:20:55,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:20:55,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:55,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:55,372 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 21:20:55,373 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 21:20:55,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 21:20:55,427 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:20:55,427 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:20:55,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:55,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 21:20:55,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:55,445 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 21:20:55,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:55,494 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 21:20:55,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892030747] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:55,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:55,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 21:20:55,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798601914] [2025-04-13 21:20:55,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:55,495 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 21:20:55,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:55,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 21:20:55,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-13 21:20:55,496 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 21:20:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:55,632 INFO L93 Difference]: Finished difference Result 301 states and 965 transitions. [2025-04-13 21:20:55,633 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 21:20:55,633 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 21:20:55,633 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:55,636 INFO L225 Difference]: With dead ends: 301 [2025-04-13 21:20:55,636 INFO L226 Difference]: Without dead ends: 253 [2025-04-13 21:20:55,636 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 21:20:55,637 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 21:20:55,638 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 21:20:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-04-13 21:20:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2025-04-13 21:20:55,651 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 21:20:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 741 transitions. [2025-04-13 21:20:55,653 INFO L79 Accepts]: Start accepts. Automaton has 253 states and 741 transitions. Word has length 15 [2025-04-13 21:20:55,653 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:55,653 INFO L485 AbstractCegarLoop]: Abstraction has 253 states and 741 transitions. [2025-04-13 21:20:55,653 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 21:20:55,653 INFO L278 IsEmpty]: Start isEmpty. Operand 253 states and 741 transitions. [2025-04-13 21:20:55,654 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 21:20:55,654 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:55,654 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:55,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-13 21:20:55,854 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 21:20:55,855 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 21:20:55,855 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2090552988, now seen corresponding path program 3 times [2025-04-13 21:20:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:55,855 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493694510] [2025-04-13 21:20:55,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:20:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:55,862 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 21:20:55,887 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:20:55,887 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 21:20:55,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:56,095 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 21:20:56,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:56,095 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493694510] [2025-04-13 21:20:56,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493694510] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:56,095 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942079562] [2025-04-13 21:20:56,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:20:56,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:56,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:56,099 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 21:20:56,101 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 21:20:56,140 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 21:20:56,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:20:56,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 21:20:56,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:56,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 21:20:56,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:56,203 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 21:20:56,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:56,304 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 21:20:56,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942079562] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:56,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:56,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2025-04-13 21:20:56,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818317750] [2025-04-13 21:20:56,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:56,304 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 21:20:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:56,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 21:20:56,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2025-04-13 21:20:56,305 INFO L87 Difference]: Start difference. First operand 253 states and 741 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 21:20:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:56,463 INFO L93 Difference]: Finished difference Result 333 states and 997 transitions. [2025-04-13 21:20:56,463 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 21:20:56,464 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 21:20:56,464 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:56,466 INFO L225 Difference]: With dead ends: 333 [2025-04-13 21:20:56,466 INFO L226 Difference]: Without dead ends: 285 [2025-04-13 21:20:56,466 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2025-04-13 21:20:56,467 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 180 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:20:56,467 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 0 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:20:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2025-04-13 21:20:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2025-04-13 21:20:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.9471830985915495) internal successors, (837), 284 states have internal predecessors, (837), 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 21:20:56,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 837 transitions. [2025-04-13 21:20:56,492 INFO L79 Accepts]: Start accepts. Automaton has 285 states and 837 transitions. Word has length 21 [2025-04-13 21:20:56,492 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:56,493 INFO L485 AbstractCegarLoop]: Abstraction has 285 states and 837 transitions. [2025-04-13 21:20:56,493 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 21:20:56,493 INFO L278 IsEmpty]: Start isEmpty. Operand 285 states and 837 transitions. [2025-04-13 21:20:56,496 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 21:20:56,496 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:56,499 INFO L218 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:56,510 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 21:20:56,700 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 21:20:56,700 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 21:20:56,701 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1022127812, now seen corresponding path program 4 times [2025-04-13 21:20:56,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:56,701 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939689029] [2025-04-13 21:20:56,701 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:20:56,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:56,707 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 21:20:56,720 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 21:20:56,720 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:20:56,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:57,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:57,363 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939689029] [2025-04-13 21:20:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939689029] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:57,363 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527440394] [2025-04-13 21:20:57,363 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:20:57,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:57,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:57,365 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 21:20:57,366 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 21:20:57,405 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 21:20:57,424 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 21:20:57,425 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:20:57,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:57,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 21:20:57,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:58,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:58,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527440394] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:58,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:58,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2025-04-13 21:20:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76031484] [2025-04-13 21:20:58,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:58,881 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-04-13 21:20:58,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:58,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-04-13 21:20:58,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2369, Unknown=0, NotChecked=0, Total=2756 [2025-04-13 21:20:58,883 INFO L87 Difference]: Start difference. First operand 285 states and 837 transitions. Second operand has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 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 21:21:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:21:04,599 INFO L93 Difference]: Finished difference Result 4442 states and 13282 transitions. [2025-04-13 21:21:04,599 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2025-04-13 21:21:04,599 INFO L79 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 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 23 [2025-04-13 21:21:04,599 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:21:04,618 INFO L225 Difference]: With dead ends: 4442 [2025-04-13 21:21:04,618 INFO L226 Difference]: Without dead ends: 4109 [2025-04-13 21:21:04,625 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6306 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3922, Invalid=16670, Unknown=0, NotChecked=0, Total=20592 [2025-04-13 21:21:04,626 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1644 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-04-13 21:21:04,626 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 0 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-04-13 21:21:04,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2025-04-13 21:21:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 3237. [2025-04-13 21:21:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 3236 states have (on average 3.057478368355995) internal successors, (9894), 3236 states have internal predecessors, (9894), 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 21:21:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 9894 transitions. [2025-04-13 21:21:04,858 INFO L79 Accepts]: Start accepts. Automaton has 3237 states and 9894 transitions. Word has length 23 [2025-04-13 21:21:04,859 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:21:04,859 INFO L485 AbstractCegarLoop]: Abstraction has 3237 states and 9894 transitions. [2025-04-13 21:21:04,859 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 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 21:21:04,859 INFO L278 IsEmpty]: Start isEmpty. Operand 3237 states and 9894 transitions. [2025-04-13 21:21:04,864 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:21:04,864 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:21:04,864 INFO L218 NwaCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:21:04,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 21:21:05,064 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 21:21:05,065 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 21:21:05,065 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:21:05,065 INFO L85 PathProgramCache]: Analyzing trace with hash 283639737, now seen corresponding path program 1 times [2025-04-13 21:21:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:21:05,065 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950007923] [2025-04-13 21:21:05,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:21:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:21:05,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 21:21:05,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:21:05,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:21:05,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:21:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:21:05,649 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950007923] [2025-04-13 21:21:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950007923] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:21:05,650 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969740797] [2025-04-13 21:21:05,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:21:05,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:21:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:21:05,651 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 21:21:05,653 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 21:21:05,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 21:21:05,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:21:05,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:21:05,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:21:05,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-04-13 21:21:05,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:21:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 55 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:06,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:21:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969740797] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:21:06,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:21:06,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 56 [2025-04-13 21:21:06,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605769654] [2025-04-13 21:21:06,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:21:06,837 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-04-13 21:21:06,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:21:06,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-04-13 21:21:06,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=2870, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 21:21:06,838 INFO L87 Difference]: Start difference. First operand 3237 states and 9894 transitions. Second operand has 58 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 57 states have internal predecessors, (80), 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 21:21:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:21:32,032 INFO L93 Difference]: Finished difference Result 29280 states and 92799 transitions. [2025-04-13 21:21:32,033 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2025-04-13 21:21:32,033 INFO L79 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 57 states have internal predecessors, (80), 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 21:21:32,033 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:21:32,172 INFO L225 Difference]: With dead ends: 29280 [2025-04-13 21:21:32,172 INFO L226 Difference]: Without dead ends: 28474 [2025-04-13 21:21:32,194 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44722 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=20865, Invalid=89027, Unknown=0, NotChecked=0, Total=109892 [2025-04-13 21:21:32,195 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 2708 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4925 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 4925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:21:32,195 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2708 Valid, 0 Invalid, 5502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 4925 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-04-13 21:21:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28474 states. [2025-04-13 21:21:35,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28474 to 21338. [2025-04-13 21:21:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21338 states, 21337 states have (on average 3.3963537516989266) internal successors, (72468), 21337 states have internal predecessors, (72468), 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 21:21:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21338 states to 21338 states and 72468 transitions. [2025-04-13 21:21:35,323 INFO L79 Accepts]: Start accepts. Automaton has 21338 states and 72468 transitions. Word has length 27 [2025-04-13 21:21:35,324 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:21:35,324 INFO L485 AbstractCegarLoop]: Abstraction has 21338 states and 72468 transitions. [2025-04-13 21:21:35,324 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 57 states have internal predecessors, (80), 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 21:21:35,324 INFO L278 IsEmpty]: Start isEmpty. Operand 21338 states and 72468 transitions. [2025-04-13 21:21:35,346 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:21:35,346 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:21:35,346 INFO L218 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:21:35,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-13 21:21:35,547 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 21:21:35,547 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 21:21:35,548 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:21:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1429147690, now seen corresponding path program 1 times [2025-04-13 21:21:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:21:35,548 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417756358] [2025-04-13 21:21:35,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:21:35,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:21:35,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 21:21:35,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:21:35,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:21:35,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:21:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:36,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:21:36,200 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417756358] [2025-04-13 21:21:36,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417756358] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:21:36,200 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516178562] [2025-04-13 21:21:36,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:21:36,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:21:36,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:21:36,203 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 21:21:36,204 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 21:21:36,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 21:21:36,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:21:36,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:21:36,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:21:36,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-04-13 21:21:36,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:21:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:36,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:21:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516178562] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:21:37,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:21:37,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 56 [2025-04-13 21:21:37,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912249082] [2025-04-13 21:21:37,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:21:37,377 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-04-13 21:21:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:21:37,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-04-13 21:21:37,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=2889, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 21:21:37,378 INFO L87 Difference]: Start difference. First operand 21338 states and 72468 transitions. Second operand has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:21:48,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:21:48,697 INFO L93 Difference]: Finished difference Result 35173 states and 116573 transitions. [2025-04-13 21:21:48,698 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-04-13 21:21:48,698 INFO L79 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:21:48,698 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:21:48,835 INFO L225 Difference]: With dead ends: 35173 [2025-04-13 21:21:48,835 INFO L226 Difference]: Without dead ends: 35021 [2025-04-13 21:21:48,850 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6435 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3756, Invalid=18296, Unknown=0, NotChecked=0, Total=22052 [2025-04-13 21:21:48,852 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 934 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4598 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 4598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 21:21:48,853 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 0 Invalid, 4839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 4598 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 21:21:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35021 states. [2025-04-13 21:21:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35021 to 25371. [2025-04-13 21:21:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25371 states, 25370 states have (on average 3.4795033504138746) internal successors, (88275), 25370 states have internal predecessors, (88275), 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 21:21:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25371 states to 25371 states and 88275 transitions. [2025-04-13 21:21:52,541 INFO L79 Accepts]: Start accepts. Automaton has 25371 states and 88275 transitions. Word has length 27 [2025-04-13 21:21:52,541 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:21:52,541 INFO L485 AbstractCegarLoop]: Abstraction has 25371 states and 88275 transitions. [2025-04-13 21:21:52,541 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:21:52,541 INFO L278 IsEmpty]: Start isEmpty. Operand 25371 states and 88275 transitions. [2025-04-13 21:21:52,561 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:21:52,561 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:21:52,561 INFO L218 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:21:52,567 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 21:21:52,762 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 21:21:52,762 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 21:21:52,762 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:21:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -940767490, now seen corresponding path program 2 times [2025-04-13 21:21:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:21:52,762 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934678837] [2025-04-13 21:21:52,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:21:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:21:52,767 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:21:52,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:21:52,776 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:21:52,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:21:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:53,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:21:53,254 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934678837] [2025-04-13 21:21:53,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934678837] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:21:53,254 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850808236] [2025-04-13 21:21:53,254 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:21:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:21:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:21:53,256 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 21:21:53,257 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 21:21:53,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:21:53,307 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:21:53,307 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:21:53,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:21:53,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-04-13 21:21:53,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:21:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:53,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:21:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:54,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850808236] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:21:54,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:21:54,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2025-04-13 21:21:54,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036434062] [2025-04-13 21:21:54,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:21:54,384 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-04-13 21:21:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:21:54,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-04-13 21:21:54,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=2988, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 21:21:54,385 INFO L87 Difference]: Start difference. First operand 25371 states and 88275 transitions. Second operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 21:22:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:22:12,163 INFO L93 Difference]: Finished difference Result 46562 states and 157512 transitions. [2025-04-13 21:22:12,163 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2025-04-13 21:22:12,164 INFO L79 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 21:22:12,164 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:22:12,359 INFO L225 Difference]: With dead ends: 46562 [2025-04-13 21:22:12,359 INFO L226 Difference]: Without dead ends: 46323 [2025-04-13 21:22:12,377 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9433 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=5567, Invalid=25585, Unknown=0, NotChecked=0, Total=31152 [2025-04-13 21:22:12,377 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1202 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4737 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 4737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:22:12,377 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 0 Invalid, 5041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 4737 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-04-13 21:22:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46323 states. [2025-04-13 21:22:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46323 to 32145. [2025-04-13 21:22:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32145 states, 32144 states have (on average 3.6232578397212545) internal successors, (116466), 32144 states have internal predecessors, (116466), 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 21:22:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32145 states to 32145 states and 116466 transitions. [2025-04-13 21:22:17,715 INFO L79 Accepts]: Start accepts. Automaton has 32145 states and 116466 transitions. Word has length 27 [2025-04-13 21:22:17,715 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:22:17,715 INFO L485 AbstractCegarLoop]: Abstraction has 32145 states and 116466 transitions. [2025-04-13 21:22:17,715 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 21:22:17,715 INFO L278 IsEmpty]: Start isEmpty. Operand 32145 states and 116466 transitions. [2025-04-13 21:22:17,743 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:22:17,743 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:22:17,743 INFO L218 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:22:17,749 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 21:22:17,944 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 21:22:17,945 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 21:22:17,945 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:22:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2106782534, now seen corresponding path program 3 times [2025-04-13 21:22:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:22:17,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112481938] [2025-04-13 21:22:17,945 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:22:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:22:17,949 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 7 equivalence classes. [2025-04-13 21:22:17,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:22:17,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-04-13 21:22:17,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:22:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:18,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:22:18,366 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112481938] [2025-04-13 21:22:18,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112481938] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:22:18,366 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016342697] [2025-04-13 21:22:18,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:22:18,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:22:18,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:22:18,368 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 21:22:18,369 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 21:22:18,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 7 equivalence classes. [2025-04-13 21:22:18,415 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:22:18,415 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-04-13 21:22:18,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:22:18,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-04-13 21:22:18,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:22:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:18,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:22:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:19,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016342697] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:22:19,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:22:19,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2025-04-13 21:22:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247066552] [2025-04-13 21:22:19,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:22:19,468 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-04-13 21:22:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:22:19,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-04-13 21:22:19,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2991, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 21:22:19,469 INFO L87 Difference]: Start difference. First operand 32145 states and 116466 transitions. Second operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 21:22:43,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:22:43,852 INFO L93 Difference]: Finished difference Result 68088 states and 243399 transitions. [2025-04-13 21:22:43,852 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2025-04-13 21:22:43,853 INFO L79 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 21:22:43,853 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:22:44,140 INFO L225 Difference]: With dead ends: 68088 [2025-04-13 21:22:44,140 INFO L226 Difference]: Without dead ends: 67837 [2025-04-13 21:22:44,162 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10038 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=5967, Invalid=26613, Unknown=0, NotChecked=0, Total=32580 [2025-04-13 21:22:44,163 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1206 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5061 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 5061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-04-13 21:22:44,163 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 0 Invalid, 5387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 5061 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-04-13 21:22:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67837 states. [2025-04-13 21:22:52,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67837 to 48475. [2025-04-13 21:22:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48475 states, 48474 states have (on average 3.8392540330899037) internal successors, (186104), 48474 states have internal predecessors, (186104), 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 21:22:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48475 states to 48475 states and 186104 transitions. [2025-04-13 21:22:53,064 INFO L79 Accepts]: Start accepts. Automaton has 48475 states and 186104 transitions. Word has length 27 [2025-04-13 21:22:53,064 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:22:53,064 INFO L485 AbstractCegarLoop]: Abstraction has 48475 states and 186104 transitions. [2025-04-13 21:22:53,064 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 21:22:53,065 INFO L278 IsEmpty]: Start isEmpty. Operand 48475 states and 186104 transitions. [2025-04-13 21:22:53,098 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:22:53,098 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:22:53,098 INFO L218 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:22:53,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-13 21:22:53,299 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 21:22:53,299 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 21:22:53,299 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:22:53,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2107186154, now seen corresponding path program 4 times [2025-04-13 21:22:53,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:22:53,299 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274196889] [2025-04-13 21:22:53,299 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:22:53,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:22:53,307 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:22:53,311 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 21:22:53,311 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:22:53,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:22:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:22:53,747 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274196889] [2025-04-13 21:22:53,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274196889] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:22:53,748 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457091314] [2025-04-13 21:22:53,748 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:22:53,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:22:53,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:22:53,749 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 21:22:53,751 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 21:22:53,792 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 21:22:53,809 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 21:22:53,809 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:22:53,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:22:53,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-04-13 21:22:53,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:22:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:54,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:22:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:54,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457091314] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:22:54,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:22:54,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 56 [2025-04-13 21:22:54,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539117299] [2025-04-13 21:22:54,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:22:54,828 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-04-13 21:22:54,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:22:54,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-04-13 21:22:54,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=2859, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 21:22:54,829 INFO L87 Difference]: Start difference. First operand 48475 states and 186104 transitions. Second operand has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:23:51,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:23:51,188 INFO L93 Difference]: Finished difference Result 119715 states and 460612 transitions. [2025-04-13 21:23:51,188 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2025-04-13 21:23:51,188 INFO L79 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:23:51,188 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:23:51,684 INFO L225 Difference]: With dead ends: 119715 [2025-04-13 21:23:51,684 INFO L226 Difference]: Without dead ends: 119433 [2025-04-13 21:23:51,723 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50276 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=23227, Invalid=101735, Unknown=0, NotChecked=0, Total=124962 [2025-04-13 21:23:51,723 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1738 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9784 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 9784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-04-13 21:23:51,723 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1738 Valid, 0 Invalid, 10176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 9784 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-04-13 21:23:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119433 states. [2025-04-13 21:24:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119433 to 79611. [2025-04-13 21:24:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79611 states, 79610 states have (on average 4.039768873257128) internal successors, (321606), 79610 states have internal predecessors, (321606), 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 21:24:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79611 states to 79611 states and 321606 transitions. [2025-04-13 21:24:07,871 INFO L79 Accepts]: Start accepts. Automaton has 79611 states and 321606 transitions. Word has length 27 [2025-04-13 21:24:07,872 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:24:07,872 INFO L485 AbstractCegarLoop]: Abstraction has 79611 states and 321606 transitions. [2025-04-13 21:24:07,872 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:24:07,872 INFO L278 IsEmpty]: Start isEmpty. Operand 79611 states and 321606 transitions. [2025-04-13 21:24:07,922 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:24:07,923 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:24:07,923 INFO L218 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:24:07,928 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 21:24:08,123 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 21:24:08,123 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:24:08,124 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:24:08,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1629671750, now seen corresponding path program 5 times [2025-04-13 21:24:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:24:08,124 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299015522] [2025-04-13 21:24:08,124 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:24:08,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:24:08,127 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 6 equivalence classes. [2025-04-13 21:24:08,135 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:24:08,135 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 21:24:08,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:24:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:08,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:24:08,515 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299015522] [2025-04-13 21:24:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299015522] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:24:08,515 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701208652] [2025-04-13 21:24:08,515 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:24:08,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:24:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:24:08,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:24:08,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 21:24:08,551 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 6 equivalence classes. [2025-04-13 21:24:08,572 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:24:08,572 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-04-13 21:24:08,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:24:08,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-04-13 21:24:08,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:24:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:09,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:24:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701208652] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:24:09,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:24:09,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 56 [2025-04-13 21:24:09,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516481974] [2025-04-13 21:24:09,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:24:09,660 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-04-13 21:24:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:24:09,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-04-13 21:24:09,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2893, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 21:24:09,661 INFO L87 Difference]: Start difference. First operand 79611 states and 321606 transitions. Second operand has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:25:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:25:26,639 INFO L93 Difference]: Finished difference Result 241498 states and 961161 transitions. [2025-04-13 21:25:26,639 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2025-04-13 21:25:26,639 INFO L79 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:25:26,640 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:25:28,454 INFO L225 Difference]: With dead ends: 241498 [2025-04-13 21:25:28,455 INFO L226 Difference]: Without dead ends: 241199 [2025-04-13 21:25:28,539 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18308 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=11870, Invalid=39886, Unknown=0, NotChecked=0, Total=51756 [2025-04-13 21:25:28,539 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1694 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4871 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 4871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:25:28,540 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 0 Invalid, 5149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 4871 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 21:25:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241199 states. [2025-04-13 21:26:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241199 to 198845. [2025-04-13 21:26:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198845 states, 198844 states have (on average 4.12960914083402) internal successors, (821148), 198844 states have internal predecessors, (821148), 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 21:26:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198845 states to 198845 states and 821148 transitions. [2025-04-13 21:26:16,510 INFO L79 Accepts]: Start accepts. Automaton has 198845 states and 821148 transitions. Word has length 27 [2025-04-13 21:26:16,510 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:26:16,510 INFO L485 AbstractCegarLoop]: Abstraction has 198845 states and 821148 transitions. [2025-04-13 21:26:16,511 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 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 21:26:16,511 INFO L278 IsEmpty]: Start isEmpty. Operand 198845 states and 821148 transitions. [2025-04-13 21:26:16,852 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 21:26:16,852 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:26:16,852 INFO L218 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:26:16,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 21:26:17,056 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-04-13 21:26:17,056 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:26:17,056 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:26:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1630075370, now seen corresponding path program 6 times [2025-04-13 21:26:17,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:26:17,056 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693309639] [2025-04-13 21:26:17,056 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:26:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:26:17,060 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-04-13 21:26:17,068 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:26:17,068 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 21:26:17,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:26:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:26:17,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:26:17,438 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693309639] [2025-04-13 21:26:17,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693309639] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:26:17,438 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811562149] [2025-04-13 21:26:17,438 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:26:17,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:26:17,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:26:17,440 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:26:17,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 21:26:17,473 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-04-13 21:26:17,492 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 21:26:17,492 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 21:26:17,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:26:17,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-04-13 21:26:17,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:26:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:26:17,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:26:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:26:18,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811562149] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:26:18,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:26:18,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2025-04-13 21:26:18,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560190708] [2025-04-13 21:26:18,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:26:18,775 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-04-13 21:26:18,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:26:18,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-04-13 21:26:18,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2981, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 21:26:18,776 INFO L87 Difference]: Start difference. First operand 198845 states and 821148 transitions. Second operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 21:29:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:29:04,760 INFO L93 Difference]: Finished difference Result 544986 states and 2256873 transitions. [2025-04-13 21:29:04,760 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2025-04-13 21:29:04,760 INFO L79 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 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 21:29:04,760 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:29:10,942 INFO L225 Difference]: With dead ends: 544986 [2025-04-13 21:29:10,942 INFO L226 Difference]: Without dead ends: 544710 [2025-04-13 21:29:11,139 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18048 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=10551, Invalid=41205, Unknown=0, NotChecked=0, Total=51756 [2025-04-13 21:29:11,140 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1580 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5425 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 5425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-04-13 21:29:11,140 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 0 Invalid, 5783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 5425 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-04-13 21:29:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544710 states. [2025-04-13 21:31:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544710 to 464319. [2025-04-13 21:31:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464319 states, 464318 states have (on average 4.238252663045585) internal successors, (1967897), 464318 states have internal predecessors, (1967897), 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)