/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-6.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:20:49,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:20:49,833 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 21:20:49,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:20:49,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:20:49,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:20:49,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:20:49,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:20:49,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:20:49,870 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:20:49,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:20:49,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:20:49,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:20:49,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:20:49,871 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:20:49,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:20:49,872 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:20:49,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:49,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:49,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:20:49,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:20:49,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:20:49,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:20:49,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:20:49,874 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 21:20:50,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:20:50,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:20:50,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:20:50,130 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:20:50,132 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:20:50,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-6.i [2025-04-13 21:20:51,422 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ecee5176/231ec5316f674f7198b97c8663caa315/FLAG443091685 [2025-04-13 21:20:51,669 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:20:51,670 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-6.i [2025-04-13 21:20:51,682 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ecee5176/231ec5316f674f7198b97c8663caa315/FLAG443091685 [2025-04-13 21:20:52,472 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ecee5176/231ec5316f674f7198b97c8663caa315 [2025-04-13 21:20:52,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:20:52,475 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:20:52,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:20:52,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:20:52,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:20:52,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7712f545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52, skipping insertion in model container [2025-04-13 21:20:52,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,498 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:20:52,706 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-6.i[30243,30256] [2025-04-13 21:20:52,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:20:52,731 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:20:52,771 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-6.i[30243,30256] [2025-04-13 21:20:52,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:20:52,801 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:20:52,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52 WrapperNode [2025-04-13 21:20:52,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:20:52,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:20:52,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:20:52,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:20:52,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,827 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-04-13 21:20:52,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:20:52,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:20:52,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:20:52,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:20:52,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,849 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 21:20:52,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,852 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:20:52,861 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:20:52,861 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:20:52,861 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:20:52,862 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (1/1) ... [2025-04-13 21:20:52,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:20:52,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:52,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 21:20:52,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 21:20:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 21:20:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 21:20:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 21:20:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 21:20:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 21:20:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:20:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:20:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 21:20:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:20:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:20:52,903 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 21:20:52,982 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:20:52,983 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:20:53,076 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:20:53,077 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:20:53,077 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:20:53,160 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:20:53,162 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:20:53,165 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:20:53,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:20:53 BoogieIcfgContainer [2025-04-13 21:20:53,165 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:20:53,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:20:53,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:20:53,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:20:53,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:20:52" (1/3) ... [2025-04-13 21:20:53,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431adcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:20:53, skipping insertion in model container [2025-04-13 21:20:53,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:20:52" (2/3) ... [2025-04-13 21:20:53,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431adcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:20:53, skipping insertion in model container [2025-04-13 21:20:53,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:20:53" (3/3) ... [2025-04-13 21:20:53,171 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2025-04-13 21:20:53,180 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:20:53,181 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-6.i that has 3 procedures, 21 locations, 23 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 21:20:53,181 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:20:53,216 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 21:20:53,238 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 58 flow [2025-04-13 21:20:53,253 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93 states, 92 states have (on average 3.2934782608695654) internal successors, (303), 92 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:20:53,270 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:20:53,276 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;@477cabef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:20:53,276 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 21:20:53,278 INFO L278 IsEmpty]: Start isEmpty. Operand has 93 states, 92 states have (on average 3.2934782608695654) internal successors, (303), 92 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:20:53,281 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 21:20:53,281 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:53,281 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:53,282 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:53,287 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:53,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1578653316, now seen corresponding path program 1 times [2025-04-13 21:20:53,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:53,292 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443912216] [2025-04-13 21:20:53,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:53,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 21:20:53,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 21:20:53,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:53,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:53,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:53,485 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443912216] [2025-04-13 21:20:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443912216] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:20:53,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:20:53,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 21:20:53,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842453781] [2025-04-13 21:20:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:20:53,491 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:20:53,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:53,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:20:53,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:20:53,504 INFO L87 Difference]: Start difference. First operand has 93 states, 92 states have (on average 3.2934782608695654) internal successors, (303), 92 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:20:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:53,582 INFO L93 Difference]: Finished difference Result 173 states and 570 transitions. [2025-04-13 21:20:53,583 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:20:53,584 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-04-13 21:20:53,585 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:53,591 INFO L225 Difference]: With dead ends: 173 [2025-04-13 21:20:53,591 INFO L226 Difference]: Without dead ends: 109 [2025-04-13 21:20:53,595 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:20:53,597 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 21:20:53,597 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 21:20:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-04-13 21:20:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-04-13 21:20:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:20:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 309 transitions. [2025-04-13 21:20:53,623 INFO L79 Accepts]: Start accepts. Automaton has 109 states and 309 transitions. Word has length 11 [2025-04-13 21:20:53,623 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:53,623 INFO L485 AbstractCegarLoop]: Abstraction has 109 states and 309 transitions. [2025-04-13 21:20:53,623 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:20:53,623 INFO L278 IsEmpty]: Start isEmpty. Operand 109 states and 309 transitions. [2025-04-13 21:20:53,624 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 21:20:53,624 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:53,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:53,624 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:20:53,624 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:53,625 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:53,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1693576751, now seen corresponding path program 1 times [2025-04-13 21:20:53,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:53,625 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083119306] [2025-04-13 21:20:53,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:53,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:53,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 21:20:53,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 21:20:53,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:53,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:53,712 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083119306] [2025-04-13 21:20:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083119306] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:53,712 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591794098] [2025-04-13 21:20:53,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:20:53,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:53,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:53,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:20:53,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 21:20:53,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 21:20:53,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 21:20:53,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:20:53,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:53,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-13 21:20:53,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:53,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591794098] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:53,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:53,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-04-13 21:20:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072032742] [2025-04-13 21:20:53,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:53,821 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 21:20:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:53,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 21:20:53,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 21:20:53,821 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 21:20:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:53,923 INFO L93 Difference]: Finished difference Result 205 states and 629 transitions. [2025-04-13 21:20:53,924 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 21:20:53,924 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 21:20:53,924 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:53,926 INFO L225 Difference]: With dead ends: 205 [2025-04-13 21:20:53,926 INFO L226 Difference]: Without dead ends: 157 [2025-04-13 21:20:53,926 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 21:20:53,928 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 21:20:53,928 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 21:20:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-04-13 21:20:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-04-13 21:20:53,950 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 21:20:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 453 transitions. [2025-04-13 21:20:53,951 INFO L79 Accepts]: Start accepts. Automaton has 157 states and 453 transitions. Word has length 12 [2025-04-13 21:20:53,951 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:53,951 INFO L485 AbstractCegarLoop]: Abstraction has 157 states and 453 transitions. [2025-04-13 21:20:53,952 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 21:20:53,952 INFO L278 IsEmpty]: Start isEmpty. Operand 157 states and 453 transitions. [2025-04-13 21:20:53,953 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 21:20:53,953 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:53,953 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:53,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 21:20:54,153 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:54,154 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:54,154 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash 328624452, now seen corresponding path program 2 times [2025-04-13 21:20:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:54,154 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068066231] [2025-04-13 21:20:54,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:20:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:54,166 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 21:20:54,188 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:20:54,188 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:20:54,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:54,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:54,291 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068066231] [2025-04-13 21:20:54,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068066231] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:54,291 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230975166] [2025-04-13 21:20:54,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:20:54,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:54,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:54,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:20:54,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 21:20:54,333 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 21:20:54,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 21:20:54,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:20:54,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:54,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 21:20:54,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:54,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:54,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230975166] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:54,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:54,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 21:20:54,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561711076] [2025-04-13 21:20:54,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:54,424 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 21:20:54,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:54,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 21:20:54,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-13 21:20:54,425 INFO L87 Difference]: Start difference. First operand 157 states and 453 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:20:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:54,586 INFO L93 Difference]: Finished difference Result 301 states and 965 transitions. [2025-04-13 21:20:54,587 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 21:20:54,587 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 21:20:54,588 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:54,590 INFO L225 Difference]: With dead ends: 301 [2025-04-13 21:20:54,590 INFO L226 Difference]: Without dead ends: 253 [2025-04-13 21:20:54,590 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-13 21:20:54,592 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 196 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:20:54,593 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:20:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-04-13 21:20:54,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2025-04-13 21:20:54,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.9404761904761907) internal successors, (741), 252 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:20:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 741 transitions. [2025-04-13 21:20:54,641 INFO L79 Accepts]: Start accepts. Automaton has 253 states and 741 transitions. Word has length 15 [2025-04-13 21:20:54,641 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:54,641 INFO L485 AbstractCegarLoop]: Abstraction has 253 states and 741 transitions. [2025-04-13 21:20:54,641 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:20:54,643 INFO L278 IsEmpty]: Start isEmpty. Operand 253 states and 741 transitions. [2025-04-13 21:20:54,645 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 21:20:54,645 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:54,645 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:54,651 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 21:20:54,845 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-04-13 21:20:54,846 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:54,846 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2090552988, now seen corresponding path program 3 times [2025-04-13 21:20:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:54,846 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540103325] [2025-04-13 21:20:54,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:20:54,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:54,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 21:20:54,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:20:54,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 21:20:54,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:55,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:55,055 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540103325] [2025-04-13 21:20:55,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540103325] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:55,055 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250581494] [2025-04-13 21:20:55,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:20:55,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:55,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:55,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:20:55,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 21:20:55,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 21:20:55,107 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 21:20:55,107 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 21:20:55,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:55,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 21:20:55,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:55,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:55,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250581494] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:55,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:55,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 17 [2025-04-13 21:20:55,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767553927] [2025-04-13 21:20:55,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:55,229 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 21:20:55,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:55,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 21:20:55,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-04-13 21:20:55,230 INFO L87 Difference]: Start difference. First operand 253 states and 741 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 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 21:20:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:20:55,398 INFO L93 Difference]: Finished difference Result 365 states and 1125 transitions. [2025-04-13 21:20:55,398 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 21:20:55,398 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 21:20:55,398 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:20:55,400 INFO L225 Difference]: With dead ends: 365 [2025-04-13 21:20:55,401 INFO L226 Difference]: Without dead ends: 317 [2025-04-13 21:20:55,401 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-04-13 21:20:55,401 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 204 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:20:55,402 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:20:55,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-04-13 21:20:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2025-04-13 21:20:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 2.9525316455696204) internal successors, (933), 316 states have internal predecessors, (933), 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 21:20:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 933 transitions. [2025-04-13 21:20:55,420 INFO L79 Accepts]: Start accepts. Automaton has 317 states and 933 transitions. Word has length 21 [2025-04-13 21:20:55,420 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:20:55,420 INFO L485 AbstractCegarLoop]: Abstraction has 317 states and 933 transitions. [2025-04-13 21:20:55,420 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 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 21:20:55,420 INFO L278 IsEmpty]: Start isEmpty. Operand 317 states and 933 transitions. [2025-04-13 21:20:55,421 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 21:20:55,421 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:20:55,421 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:20:55,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-13 21:20:55,626 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:55,626 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 21:20:55,626 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:20:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1283828700, now seen corresponding path program 4 times [2025-04-13 21:20:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:20:55,627 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894166111] [2025-04-13 21:20:55,627 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:20:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:20:55,640 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 21:20:55,651 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 21:20:55,651 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:20:55,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:56,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:20:56,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894166111] [2025-04-13 21:20:56,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894166111] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:20:56,441 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508528159] [2025-04-13 21:20:56,441 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:20:56,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:20:56,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:20:56,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 21:20:56,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 21:20:56,483 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 21:20:56,504 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 21:20:56,505 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:20:56,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:20:56,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-04-13 21:20:56,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:20:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:57,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:20:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:20:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508528159] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:20:58,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:20:58,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2025-04-13 21:20:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904267215] [2025-04-13 21:20:58,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:20:58,131 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-04-13 21:20:58,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:20:58,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-04-13 21:20:58,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=2867, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 21:20:58,133 INFO L87 Difference]: Start difference. First operand 317 states and 933 transitions. Second operand has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 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 21:21:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:21:36,316 INFO L93 Difference]: Finished difference Result 17812 states and 53557 transitions. [2025-04-13 21:21:36,316 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 436 states. [2025-04-13 21:21:36,317 INFO L79 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 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 25 [2025-04-13 21:21:36,317 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:21:36,404 INFO L225 Difference]: With dead ends: 17812 [2025-04-13 21:21:36,404 INFO L226 Difference]: Without dead ends: 16098 [2025-04-13 21:21:36,431 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104117 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=45063, Invalid=181989, Unknown=0, NotChecked=0, Total=227052 [2025-04-13 21:21:36,432 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 2990 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7975 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 7975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:21:36,433 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 0 Invalid, 8536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 7975 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-04-13 21:21:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16098 states. [2025-04-13 21:21:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16098 to 6452. [2025-04-13 21:21:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6452 states, 6451 states have (on average 3.1010696016121533) internal successors, (20005), 6451 states have internal predecessors, (20005), 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 21:21:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6452 states to 6452 states and 20005 transitions. [2025-04-13 21:21:37,294 INFO L79 Accepts]: Start accepts. Automaton has 6452 states and 20005 transitions. Word has length 25 [2025-04-13 21:21:37,294 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:21:37,295 INFO L485 AbstractCegarLoop]: Abstraction has 6452 states and 20005 transitions. [2025-04-13 21:21:37,295 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 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 21:21:37,295 INFO L278 IsEmpty]: Start isEmpty. Operand 6452 states and 20005 transitions. [2025-04-13 21:21:37,302 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 21:21:37,302 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:21:37,302 INFO L218 NwaCegarLoop]: trace histogram [14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:21:37,308 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 21:21:37,506 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 21:21:37,506 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 21:21:37,506 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:21:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1579901849, now seen corresponding path program 1 times [2025-04-13 21:21:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:21:37,506 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533246607] [2025-04-13 21:21:37,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:21:37,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:21:37,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 21:21:37,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:21:37,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:21:37,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:21:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:38,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:21:38,184 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533246607] [2025-04-13 21:21:38,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533246607] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:21:38,184 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501067139] [2025-04-13 21:21:38,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:21:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:21:38,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:21:38,185 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 21:21:38,186 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 21:21:38,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 21:21:38,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:21:38,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:21:38,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:21:38,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 21:21:38,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:21:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 78 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:38,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:21:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:21:39,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501067139] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:21:39,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:21:39,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 21:21:39,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457864058] [2025-04-13 21:21:39,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:21:39,544 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 21:21:39,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:21:39,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 21:21:39,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=3615, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 21:21:39,545 INFO L87 Difference]: Start difference. First operand 6452 states and 20005 transitions. Second operand has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 21:22:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:22:23,188 INFO L93 Difference]: Finished difference Result 50429 states and 160071 transitions. [2025-04-13 21:22:23,189 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 356 states. [2025-04-13 21:22:23,189 INFO L79 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 29 [2025-04-13 21:22:23,189 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:22:23,348 INFO L225 Difference]: With dead ends: 50429 [2025-04-13 21:22:23,348 INFO L226 Difference]: Without dead ends: 49391 [2025-04-13 21:22:23,373 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71977 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=32441, Invalid=137715, Unknown=0, NotChecked=0, Total=170156 [2025-04-13 21:22:23,374 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 3742 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5846 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3742 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 5846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:22:23,374 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3742 Valid, 0 Invalid, 6610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 5846 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-04-13 21:22:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49391 states. [2025-04-13 21:22:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49391 to 39033. [2025-04-13 21:22:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39033 states, 39032 states have (on average 3.36249743799959) internal successors, (131245), 39032 states have internal predecessors, (131245), 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 21:22:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39033 states to 39033 states and 131245 transitions. [2025-04-13 21:22:31,874 INFO L79 Accepts]: Start accepts. Automaton has 39033 states and 131245 transitions. Word has length 29 [2025-04-13 21:22:31,874 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:22:31,875 INFO L485 AbstractCegarLoop]: Abstraction has 39033 states and 131245 transitions. [2025-04-13 21:22:31,875 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 21:22:31,875 INFO L278 IsEmpty]: Start isEmpty. Operand 39033 states and 131245 transitions. [2025-04-13 21:22:31,901 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 21:22:31,901 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:22:31,901 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:22:31,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 21:22:32,102 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 21:22:32,102 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 21:22:32,102 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:22:32,102 INFO L85 PathProgramCache]: Analyzing trace with hash -100198538, now seen corresponding path program 1 times [2025-04-13 21:22:32,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:22:32,102 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354327113] [2025-04-13 21:22:32,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:22:32,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:22:32,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 21:22:32,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:22:32,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:22:32,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:22:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:32,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:22:32,691 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354327113] [2025-04-13 21:22:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354327113] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:22:32,691 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556660208] [2025-04-13 21:22:32,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:22:32,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:22:32,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:22:32,694 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 21:22:32,696 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 21:22:32,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 21:22:32,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:22:32,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:22:32,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:22:32,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 21:22:32,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:22:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:33,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:22:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:22:33,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556660208] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:22:33,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:22:33,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 62 [2025-04-13 21:22:33,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550477578] [2025-04-13 21:22:33,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:22:33,863 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-04-13 21:22:33,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:22:33,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-04-13 21:22:33,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=3514, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 21:22:33,864 INFO L87 Difference]: Start difference. First operand 39033 states and 131245 transitions. Second operand has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 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 21:22:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:22:57,775 INFO L93 Difference]: Finished difference Result 61511 states and 203423 transitions. [2025-04-13 21:22:57,775 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2025-04-13 21:22:57,775 INFO L79 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 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 29 [2025-04-13 21:22:57,775 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:22:58,046 INFO L225 Difference]: With dead ends: 61511 [2025-04-13 21:22:58,046 INFO L226 Difference]: Without dead ends: 61347 [2025-04-13 21:22:58,069 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8237 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4783, Invalid=22939, Unknown=0, NotChecked=0, Total=27722 [2025-04-13 21:22:58,070 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1256 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5006 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 5006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-04-13 21:22:58,070 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 0 Invalid, 5306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 5006 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-04-13 21:22:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61347 states. [2025-04-13 21:23:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61347 to 46495. [2025-04-13 21:23:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46495 states, 46494 states have (on average 3.4576289413687786) internal successors, (160759), 46494 states have internal predecessors, (160759), 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 21:23:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46495 states to 46495 states and 160759 transitions. [2025-04-13 21:23:09,010 INFO L79 Accepts]: Start accepts. Automaton has 46495 states and 160759 transitions. Word has length 29 [2025-04-13 21:23:09,012 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:23:09,012 INFO L485 AbstractCegarLoop]: Abstraction has 46495 states and 160759 transitions. [2025-04-13 21:23:09,012 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 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 21:23:09,012 INFO L278 IsEmpty]: Start isEmpty. Operand 46495 states and 160759 transitions. [2025-04-13 21:23:09,043 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 21:23:09,043 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:23:09,043 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:23:09,050 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 21:23:09,244 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 21:23:09,244 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 21:23:09,244 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:23:09,244 INFO L85 PathProgramCache]: Analyzing trace with hash 388181662, now seen corresponding path program 2 times [2025-04-13 21:23:09,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:23:09,244 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884975529] [2025-04-13 21:23:09,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:23:09,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:23:09,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-13 21:23:09,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:23:09,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:23:09,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:23:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:23:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:23:09,793 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884975529] [2025-04-13 21:23:09,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884975529] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:23:09,793 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593289882] [2025-04-13 21:23:09,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:23:09,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:23:09,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:23:09,795 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 21:23:09,796 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 21:23:09,833 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-13 21:23:09,852 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:23:09,852 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 21:23:09,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:23:09,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 21:23:09,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:23:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:23:10,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:23:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:23:11,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593289882] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:23:11,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:23:11,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 21:23:11,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374123664] [2025-04-13 21:23:11,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:23:11,310 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 21:23:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:23:11,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 21:23:11,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=3621, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 21:23:11,311 INFO L87 Difference]: Start difference. First operand 46495 states and 160759 transitions. Second operand has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 21:23:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:23:47,452 INFO L93 Difference]: Finished difference Result 78038 states and 263180 transitions. [2025-04-13 21:23:47,452 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2025-04-13 21:23:47,452 INFO L79 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 29 [2025-04-13 21:23:47,453 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:23:47,730 INFO L225 Difference]: With dead ends: 78038 [2025-04-13 21:23:47,730 INFO L226 Difference]: Without dead ends: 77787 [2025-04-13 21:23:47,756 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11612 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=6820, Invalid=31010, Unknown=0, NotChecked=0, Total=37830 [2025-04-13 21:23:47,756 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1521 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5627 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 5627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 21:23:47,757 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 0 Invalid, 6006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 5627 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 21:23:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77787 states. [2025-04-13 21:24:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77787 to 57341. [2025-04-13 21:24:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57341 states, 57340 states have (on average 3.5808510638297872) internal successors, (205326), 57340 states have internal predecessors, (205326), 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 21:24:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57341 states to 57341 states and 205326 transitions. [2025-04-13 21:24:02,730 INFO L79 Accepts]: Start accepts. Automaton has 57341 states and 205326 transitions. Word has length 29 [2025-04-13 21:24:02,730 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:24:02,730 INFO L485 AbstractCegarLoop]: Abstraction has 57341 states and 205326 transitions. [2025-04-13 21:24:02,731 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 21:24:02,731 INFO L278 IsEmpty]: Start isEmpty. Operand 57341 states and 205326 transitions. [2025-04-13 21:24:02,768 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 21:24:02,768 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:24:02,768 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:24:02,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-13 21:24:02,968 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 21:24:02,969 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 21:24:02,969 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:24:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash -777833382, now seen corresponding path program 3 times [2025-04-13 21:24:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:24:02,969 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228895085] [2025-04-13 21:24:02,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:24:02,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:24:02,973 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 8 equivalence classes. [2025-04-13 21:24:02,996 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:24:02,996 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 21:24:02,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:24:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:03,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:24:03,961 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228895085] [2025-04-13 21:24:03,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228895085] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:24:03,961 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755166931] [2025-04-13 21:24:03,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:24:03,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:24:03,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:24:03,963 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 21:24:03,964 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 21:24:04,004 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 8 equivalence classes. [2025-04-13 21:24:04,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:24:04,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 21:24:04,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:24:04,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 21:24:04,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:24:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:04,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:24:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:24:05,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755166931] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:24:05,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:24:05,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 21:24:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47784427] [2025-04-13 21:24:05,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:24:05,277 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 21:24:05,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:24:05,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 21:24:05,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=3624, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 21:24:05,278 INFO L87 Difference]: Start difference. First operand 57341 states and 205326 transitions. Second operand has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 21:24:58,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:24:58,275 INFO L93 Difference]: Finished difference Result 114372 states and 403257 transitions. [2025-04-13 21:24:58,275 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2025-04-13 21:24:58,276 INFO L79 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 29 [2025-04-13 21:24:58,276 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:24:58,760 INFO L225 Difference]: With dead ends: 114372 [2025-04-13 21:24:58,760 INFO L226 Difference]: Without dead ends: 114109 [2025-04-13 21:24:58,799 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12591 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=7397, Invalid=32803, Unknown=0, NotChecked=0, Total=40200 [2025-04-13 21:24:58,799 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1428 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5984 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 5984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:24:58,799 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 0 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 5984 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-04-13 21:24:58,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114109 states. [2025-04-13 21:25:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114109 to 85176. [2025-04-13 21:25:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85176 states, 85175 states have (on average 3.7576401526269447) internal successors, (320057), 85175 states have internal predecessors, (320057), 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 21:25:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85176 states to 85176 states and 320057 transitions. [2025-04-13 21:25:24,322 INFO L79 Accepts]: Start accepts. Automaton has 85176 states and 320057 transitions. Word has length 29 [2025-04-13 21:25:24,323 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:25:24,323 INFO L485 AbstractCegarLoop]: Abstraction has 85176 states and 320057 transitions. [2025-04-13 21:25:24,323 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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 21:25:24,323 INFO L278 IsEmpty]: Start isEmpty. Operand 85176 states and 320057 transitions. [2025-04-13 21:25:24,376 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 21:25:24,377 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:25:24,377 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:25:24,382 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 21:25:24,578 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 21:25:24,579 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 21:25:24,580 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:25:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash -778237002, now seen corresponding path program 4 times [2025-04-13 21:25:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:25:24,580 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117613942] [2025-04-13 21:25:24,580 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:25:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:25:24,583 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-04-13 21:25:24,589 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:25:24,589 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:25:24,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:25:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:25:25,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:25:25,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117613942] [2025-04-13 21:25:25,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117613942] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:25:25,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634131235] [2025-04-13 21:25:25,119 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:25:25,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:25:25,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:25:25,121 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 21:25:25,122 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 21:25:25,157 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-04-13 21:25:25,176 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:25:25,176 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:25:25,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:25:25,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 21:25:25,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:25:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:25:25,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:25:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:25:26,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634131235] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:25:26,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:25:26,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 62 [2025-04-13 21:25:26,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287973664] [2025-04-13 21:25:26,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:25:26,423 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-04-13 21:25:26,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:25:26,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-04-13 21:25:26,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=3463, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 21:25:26,424 INFO L87 Difference]: Start difference. First operand 85176 states and 320057 transitions. Second operand has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:27:23,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:27:23,245 INFO L93 Difference]: Finished difference Result 182540 states and 693180 transitions. [2025-04-13 21:27:23,245 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 376 states. [2025-04-13 21:27:23,245 INFO L79 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 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 29 [2025-04-13 21:27:23,246 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:27:24,076 INFO L225 Difference]: With dead ends: 182540 [2025-04-13 21:27:24,076 INFO L226 Difference]: Without dead ends: 182226 [2025-04-13 21:27:24,150 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 421 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74088 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=33316, Invalid=145190, Unknown=0, NotChecked=0, Total=178506 [2025-04-13 21:27:24,150 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 2050 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12308 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 12308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-04-13 21:27:24,150 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 0 Invalid, 12800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 12308 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2025-04-13 21:27:24,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182226 states. [2025-04-13 21:28:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182226 to 126619. [2025-04-13 21:28:05,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126619 states, 126618 states have (on average 3.942835931700074) internal successors, (499234), 126618 states have internal predecessors, (499234), 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 21:28:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126619 states to 126619 states and 499234 transitions. [2025-04-13 21:28:06,778 INFO L79 Accepts]: Start accepts. Automaton has 126619 states and 499234 transitions. Word has length 29 [2025-04-13 21:28:06,779 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:28:06,779 INFO L485 AbstractCegarLoop]: Abstraction has 126619 states and 499234 transitions. [2025-04-13 21:28:06,779 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 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 21:28:06,779 INFO L278 IsEmpty]: Start isEmpty. Operand 126619 states and 499234 transitions. [2025-04-13 21:28:06,871 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 21:28:06,872 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:28:06,872 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:28:06,878 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 21:28:07,076 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 21:28:07,076 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 21:28:07,077 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:28:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1118375642, now seen corresponding path program 5 times [2025-04-13 21:28:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:28:07,077 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172766304] [2025-04-13 21:28:07,077 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:28:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:28:07,083 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 7 equivalence classes. [2025-04-13 21:28:07,096 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:28:07,097 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 21:28:07,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:28:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:28:07,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:28:07,604 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172766304] [2025-04-13 21:28:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172766304] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:28:07,604 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980581000] [2025-04-13 21:28:07,604 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:28:07,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:28:07,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:28:07,606 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 21:28:07,607 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 21:28:07,639 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 7 equivalence classes. [2025-04-13 21:28:07,658 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:28:07,658 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-04-13 21:28:07,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:28:07,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 21:28:07,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:28:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:28:08,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:28:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:28:08,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980581000] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:28:08,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:28:08,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 62 [2025-04-13 21:28:08,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63325883] [2025-04-13 21:28:08,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:28:09,000 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-04-13 21:28:09,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:28:09,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-04-13 21:28:09,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=3520, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 21:28:09,001 INFO L87 Difference]: Start difference. First operand 126619 states and 499234 transitions. Second operand has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:31:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:31:13,973 INFO L93 Difference]: Finished difference Result 380811 states and 1492375 transitions. [2025-04-13 21:31:13,974 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2025-04-13 21:31:13,974 INFO L79 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 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 29 [2025-04-13 21:31:13,974 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:31:17,310 INFO L225 Difference]: With dead ends: 380811 [2025-04-13 21:31:17,310 INFO L226 Difference]: Without dead ends: 380479 [2025-04-13 21:31:17,495 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27549 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=17189, Invalid=55981, Unknown=0, NotChecked=0, Total=73170 [2025-04-13 21:31:17,495 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 2029 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6394 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 6394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-04-13 21:31:17,495 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 0 Invalid, 6745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 6394 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-04-13 21:31:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380479 states. [2025-04-13 21:33:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380479 to 319694. [2025-04-13 21:33:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319694 states, 319693 states have (on average 4.04741736603554) internal successors, (1293931), 319693 states have internal predecessors, (1293931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319694 states to 319694 states and 1293931 transitions. [2025-04-13 21:33:23,636 INFO L79 Accepts]: Start accepts. Automaton has 319694 states and 1293931 transitions. Word has length 29 [2025-04-13 21:33:23,636 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:33:23,637 INFO L485 AbstractCegarLoop]: Abstraction has 319694 states and 1293931 transitions. [2025-04-13 21:33:23,637 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 21:33:23,637 INFO L278 IsEmpty]: Start isEmpty. Operand 319694 states and 1293931 transitions. [2025-04-13 21:33:23,901 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 21:33:23,901 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:33:23,901 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:33:23,909 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 21:33:24,102 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 21:33:24,102 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 21:33:24,103 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:33:24,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1117972022, now seen corresponding path program 6 times [2025-04-13 21:33:24,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:33:24,103 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477510780] [2025-04-13 21:33:24,103 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:33:24,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:33:24,116 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 7 equivalence classes. [2025-04-13 21:33:24,144 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:33:24,144 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 21:33:24,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:25,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:33:25,059 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477510780] [2025-04-13 21:33:25,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477510780] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 21:33:25,059 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222760085] [2025-04-13 21:33:25,059 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 21:33:25,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 21:33:25,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:33:25,061 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 21:33:25,063 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 21:33:25,103 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 7 equivalence classes. [2025-04-13 21:33:25,124 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:33:25,124 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-04-13 21:33:25,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:33:25,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 21:33:25,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 21:33:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:25,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 21:33:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:33:26,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222760085] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 21:33:26,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 21:33:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 21:33:26,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97932714] [2025-04-13 21:33:26,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 21:33:26,733 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 21:33:26,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:33:26,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 21:33:26,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=3618, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 21:33:26,735 INFO L87 Difference]: Start difference. First operand 319694 states and 1293931 transitions. Second operand has 65 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 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) Received shutdown request... [2025-04-13 21:34:13,387 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2025-04-13 21:34:13,392 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12652 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=9652, Invalid=30950, Unknown=0, NotChecked=0, Total=40602 [2025-04-13 21:34:13,393 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1373 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4298 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 4298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:13,393 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 0 Invalid, 4702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 4298 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-04-13 21:34:13,395 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 21:34:13,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-04-13 21:34:13,406 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 21:34:13,406 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 21:34:13,597 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-04-13 21:34:13,597 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (319694states) and FLOYD_HOARE automaton (currently 144 states, 65 states before enhancement),while ReachableStatesComputation was computing reachable states (75978 states constructed, input type IntersectNwa). [2025-04-13 21:34:13,600 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 21:34:13,600 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 21:34:13,602 INFO L422 BasicCegarLoop]: Path program histogram: [6, 4, 1, 1] [2025-04-13 21:34:13,605 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 21:34:13,605 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 21:34:13,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 09:34:13 BasicIcfg [2025-04-13 21:34:13,610 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 21:34:13,613 INFO L158 Benchmark]: Toolchain (without parser) took 801135.00ms. Allocated memory was 142.6MB in the beginning and 6.4GB in the end (delta: 6.3GB). Free memory was 101.1MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. [2025-04-13 21:34:13,613 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:34:13,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.35ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 78.3MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 21:34:13,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.26ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 76.4MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 21:34:13,613 INFO L158 Benchmark]: Boogie Preprocessor took 32.74ms. Allocated memory is still 142.6MB. Free memory was 76.4MB in the beginning and 74.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:34:13,613 INFO L158 Benchmark]: IcfgBuilder took 304.54ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 48.6MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 21:34:13,614 INFO L158 Benchmark]: TraceAbstraction took 800443.31ms. Allocated memory was 142.6MB in the beginning and 6.4GB in the end (delta: 6.3GB). Free memory was 47.9MB in the beginning and 4.3GB in the end (delta: -4.3GB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. [2025-04-13 21:34:13,615 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 325.35ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 78.3MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.26ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 76.4MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.74ms. Allocated memory is still 142.6MB. Free memory was 76.4MB in the beginning and 74.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 304.54ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 48.6MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 800443.31ms. Allocated memory was 142.6MB in the beginning and 6.4GB in the end (delta: 6.3GB). Free memory was 47.9MB in the beginning and 4.3GB in the end (delta: -4.3GB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (319694states) and FLOYD_HOARE automaton (currently 144 states, 65 states before enhancement),while ReachableStatesComputation was computing reachable states (75978 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (319694states) and FLOYD_HOARE automaton (currently 144 states, 65 states before enhancement),while ReachableStatesComputation was computing reachable states (75978 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (319694states) and FLOYD_HOARE automaton (currently 144 states, 65 states before enhancement),while ReachableStatesComputation was computing reachable states (75978 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 31 locations, 37 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 800.4s, OverallIterations: 12, TraceHistogramMax: 14, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.5s, AutomataDifference: 549.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16877 SdHoareTripleChecker+Valid, 22.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16877 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 18.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3680 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53821 IncrementalHoareTripleChecker+Invalid, 57501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3680 mSolverCounterUnsat, 0 mSDtfsCounter, 53821 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2561 GetRequests, 188 SyntacticMatches, 8 SemanticMatches, 2365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322935 ImplicationChecksByTransitivity, 149.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=319694occurred in iteration=11, InterpolantAutomatonStates: 1808, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 228.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 200627 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 563 NumberOfCodeBlocks, 563 NumberOfCodeBlocksAsserted, 79 NumberOfCheckSat, 805 ConstructedInterpolants, 0 QuantifiedInterpolants, 10982 SizeOfPredicates, 144 NumberOfNonLiveVariables, 2277 ConjunctsInSsa, 459 ConjunctsInUnsatCore, 34 InterpolantComputations, 1 PerfectInterpolantSequences, 570/2406 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown