/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/pthread/fib_unsafe-6.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 16:53:36,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 16:53:36,209 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 16:53:36,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 16:53:36,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 16:53:36,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 16:53:36,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 16:53:36,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 16:53:36,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 16:53:36,237 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 16:53:36,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 16:53:36,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 16:53:36,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 16:53:36,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 16:53:36,238 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 16:53:36,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 16:53:36,239 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 16:53:36,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:36,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:36,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 16:53:36,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 16:53:36,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 16:53:36,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 16:53:36,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 16:53:36,241 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA [2025-04-13 16:53:36,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 16:53:36,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 16:53:36,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 16:53:36,476 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 16:53:36,477 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 16:53:36,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-6.i [2025-04-13 16:53:37,726 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b1aba96/a405f501cd93473b898ad0eedfcc78e8/FLAG47b04191f [2025-04-13 16:53:37,950 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 16:53:37,950 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-6.i [2025-04-13 16:53:37,959 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b1aba96/a405f501cd93473b898ad0eedfcc78e8/FLAG47b04191f [2025-04-13 16:53:38,926 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b1aba96/a405f501cd93473b898ad0eedfcc78e8 [2025-04-13 16:53:38,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 16:53:38,929 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 16:53:38,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 16:53:38,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 16:53:38,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 16:53:38,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:53:38" (1/1) ... [2025-04-13 16:53:38,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4806228e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:38, skipping insertion in model container [2025-04-13 16:53:38,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:53:38" (1/1) ... [2025-04-13 16:53:38,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 16:53:39,163 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 16:53:39,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 16:53:39,193 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 16:53:39,245 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 16:53:39,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 16:53:39,281 INFO L204 MainTranslator]: Completed translation [2025-04-13 16:53:39,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39 WrapperNode [2025-04-13 16:53:39,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 16:53:39,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 16:53:39,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 16:53:39,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 16:53:39,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,313 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-04-13 16:53:39,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 16:53:39,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 16:53:39,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 16:53:39,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 16:53:39,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,333 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 16:53:39,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,338 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 16:53:39,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 16:53:39,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 16:53:39,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 16:53:39,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:39,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:39,370 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 16:53:39,372 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 16:53:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 16:53:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 16:53:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 16:53:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 16:53:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 16:53:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 16:53:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 16:53:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 16:53:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 16:53:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 16:53:39,389 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 16:53:39,495 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 16:53:39,496 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 16:53:39,629 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 16:53:39,630 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 16:53:39,630 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 16:53:39,734 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 16:53:39,736 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 16:53:39,739 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 16:53:39,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 04:53:39 BoogieIcfgContainer [2025-04-13 16:53:39,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 16:53:39,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 16:53:39,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 16:53:39,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 16:53:39,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 04:53:38" (1/3) ... [2025-04-13 16:53:39,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c35305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 04:53:39, skipping insertion in model container [2025-04-13 16:53:39,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (2/3) ... [2025-04-13 16:53:39,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c35305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 04:53:39, skipping insertion in model container [2025-04-13 16:53:39,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 04:53:39" (3/3) ... [2025-04-13 16:53:39,746 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2025-04-13 16:53:39,756 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 16:53:39,757 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 16:53:39,757 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 16:53:39,793 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 16:53:39,816 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 58 flow [2025-04-13 16:53:39,836 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 16:53:39,860 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 16:53:39,868 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;@7ef84356, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 16:53:39,868 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 16:53:39,871 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 16:53:39,877 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 16:53:39,877 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:39,877 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:39,878 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 16:53:39,883 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:39,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1561770242, now seen corresponding path program 1 times [2025-04-13 16:53:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:39,888 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436084527] [2025-04-13 16:53:39,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:39,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:39,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 16:53:39,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 16:53:39,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:39,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,103 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 16:53:40,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,106 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436084527] [2025-04-13 16:53:40,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436084527] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 16:53:40,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 16:53:40,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 16:53:40,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238306923] [2025-04-13 16:53:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,134 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 16:53:40,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 16:53:40,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 16:53:40,152 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 16:53:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,219 INFO L93 Difference]: Finished difference Result 173 states and 570 transitions. [2025-04-13 16:53:40,220 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 16:53:40,221 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 16:53:40,221 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,228 INFO L225 Difference]: With dead ends: 173 [2025-04-13 16:53:40,228 INFO L226 Difference]: Without dead ends: 109 [2025-04-13 16:53:40,230 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 16:53:40,232 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:40,232 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 16:53:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-04-13 16:53:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-04-13 16:53:40,266 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 16:53:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 309 transitions. [2025-04-13 16:53:40,273 INFO L79 Accepts]: Start accepts. Automaton has 109 states and 309 transitions. Word has length 11 [2025-04-13 16:53:40,273 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,273 INFO L485 AbstractCegarLoop]: Abstraction has 109 states and 309 transitions. [2025-04-13 16:53:40,274 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 16:53:40,274 INFO L278 IsEmpty]: Start isEmpty. Operand 109 states and 309 transitions. [2025-04-13 16:53:40,274 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 16:53:40,276 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,277 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 16:53:40,277 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 16:53:40,277 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:40,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1170211856, now seen corresponding path program 1 times [2025-04-13 16:53:40,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:40,277 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424614041] [2025-04-13 16:53:40,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:40,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 16:53:40,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 16:53:40,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,384 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 16:53:40,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424614041] [2025-04-13 16:53:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424614041] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:40,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603104837] [2025-04-13 16:53:40,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:40,387 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 16:53:40,388 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 16:53:40,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 16:53:40,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 16:53:40,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-13 16:53:40,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:40,482 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 16:53:40,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:40,498 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 16:53:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603104837] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:40,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:40,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-04-13 16:53:40,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521808461] [2025-04-13 16:53:40,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,499 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 16:53:40,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 16:53:40,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 16:53:40,500 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 16:53:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,593 INFO L93 Difference]: Finished difference Result 205 states and 629 transitions. [2025-04-13 16:53:40,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 16:53:40,594 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 16:53:40,594 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,595 INFO L225 Difference]: With dead ends: 205 [2025-04-13 16:53:40,596 INFO L226 Difference]: Without dead ends: 157 [2025-04-13 16:53:40,596 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 16:53:40,596 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 74 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:40,596 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 15 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 16:53:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-04-13 16:53:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-04-13 16:53:40,613 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 16:53:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 453 transitions. [2025-04-13 16:53:40,615 INFO L79 Accepts]: Start accepts. Automaton has 157 states and 453 transitions. Word has length 12 [2025-04-13 16:53:40,615 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,615 INFO L485 AbstractCegarLoop]: Abstraction has 157 states and 453 transitions. [2025-04-13 16:53:40,615 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 16:53:40,615 INFO L278 IsEmpty]: Start isEmpty. Operand 157 states and 453 transitions. [2025-04-13 16:53:40,618 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 16:53:40,619 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,620 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 16:53:40,821 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 16:53:40,822 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 16:53:40,823 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash 493351806, now seen corresponding path program 2 times [2025-04-13 16:53:40,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:40,823 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132062480] [2025-04-13 16:53:40,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:53:40,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:40,836 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 16:53:40,851 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 16:53:40,852 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:53:40,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,948 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 16:53:40,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,948 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132062480] [2025-04-13 16:53:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132062480] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:40,948 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914454428] [2025-04-13 16:53:40,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:53:40,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:40,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:40,950 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 16:53:40,952 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 16:53:40,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 16:53:41,011 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 16:53:41,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:53:41,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 16:53:41,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:41,032 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 16:53:41,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:41,087 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 16:53:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914454428] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:41,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:41,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 16:53:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789769466] [2025-04-13 16:53:41,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:41,088 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 16:53:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:41,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 16:53:41,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-13 16:53:41,089 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 16:53:41,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:41,256 INFO L93 Difference]: Finished difference Result 301 states and 965 transitions. [2025-04-13 16:53:41,256 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 16:53:41,256 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 16:53:41,256 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:41,259 INFO L225 Difference]: With dead ends: 301 [2025-04-13 16:53:41,259 INFO L226 Difference]: Without dead ends: 253 [2025-04-13 16:53:41,259 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 16:53:41,260 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 196 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:41,260 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 28 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 16:53:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-04-13 16:53:41,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2025-04-13 16:53:41,285 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 16:53:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 741 transitions. [2025-04-13 16:53:41,290 INFO L79 Accepts]: Start accepts. Automaton has 253 states and 741 transitions. Word has length 15 [2025-04-13 16:53:41,290 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:41,290 INFO L485 AbstractCegarLoop]: Abstraction has 253 states and 741 transitions. [2025-04-13 16:53:41,290 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 16:53:41,290 INFO L278 IsEmpty]: Start isEmpty. Operand 253 states and 741 transitions. [2025-04-13 16:53:41,291 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 16:53:41,291 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:41,291 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:41,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 16:53:41,491 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 16:53:41,492 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 16:53:41,492 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1439646146, now seen corresponding path program 3 times [2025-04-13 16:53:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:41,492 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686404404] [2025-04-13 16:53:41,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 16:53:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:41,499 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 16:53:41,523 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 16:53:41,523 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 16:53:41,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,710 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 16:53:41,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:41,710 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686404404] [2025-04-13 16:53:41,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686404404] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:41,710 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851139977] [2025-04-13 16:53:41,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 16:53:41,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:41,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:41,713 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 16:53:41,714 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 16:53:41,752 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 16:53:41,777 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 16:53:41,777 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 16:53:41,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 16:53:41,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:41,811 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 16:53:41,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:41,926 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 16:53:41,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851139977] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:41,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:41,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 17 [2025-04-13 16:53:41,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280509203] [2025-04-13 16:53:41,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:41,926 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 16:53:41,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:41,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 16:53:41,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-04-13 16:53:41,927 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 16:53:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:42,093 INFO L93 Difference]: Finished difference Result 365 states and 1125 transitions. [2025-04-13 16:53:42,093 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 16:53:42,093 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 16:53:42,093 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:42,096 INFO L225 Difference]: With dead ends: 365 [2025-04-13 16:53:42,096 INFO L226 Difference]: Without dead ends: 317 [2025-04-13 16:53:42,096 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 16:53:42,099 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 204 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:42,099 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 40 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 16:53:42,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-04-13 16:53:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2025-04-13 16:53:42,124 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 16:53:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 933 transitions. [2025-04-13 16:53:42,126 INFO L79 Accepts]: Start accepts. Automaton has 317 states and 933 transitions. Word has length 21 [2025-04-13 16:53:42,126 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:42,126 INFO L485 AbstractCegarLoop]: Abstraction has 317 states and 933 transitions. [2025-04-13 16:53:42,127 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 16:53:42,127 INFO L278 IsEmpty]: Start isEmpty. Operand 317 states and 933 transitions. [2025-04-13 16:53:42,131 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 16:53:42,131 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:42,131 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:42,137 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 16:53:42,331 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 16:53:42,332 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 16:53:42,332 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1180579138, now seen corresponding path program 4 times [2025-04-13 16:53:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:42,332 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840958793] [2025-04-13 16:53:42,332 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 16:53:42,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:42,338 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 16:53:42,352 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 16:53:42,352 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 16:53:42,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:43,172 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 16:53:43,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:43,172 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840958793] [2025-04-13 16:53:43,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840958793] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:43,172 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956431901] [2025-04-13 16:53:43,172 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 16:53:43,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:43,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:43,175 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 16:53:43,176 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 16:53:43,209 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 16:53:43,229 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 16:53:43,230 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 16:53:43,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:43,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-04-13 16:53:43,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:43,946 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 16:53:43,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:44,815 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 16:53:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956431901] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:44,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:44,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2025-04-13 16:53:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97877107] [2025-04-13 16:53:44,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:44,816 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-04-13 16:53:44,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:44,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-04-13 16:53:44,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=2867, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 16:53:44,818 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 16:54:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:54:24,015 INFO L93 Difference]: Finished difference Result 17812 states and 53557 transitions. [2025-04-13 16:54:24,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 436 states. [2025-04-13 16:54:24,016 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 16:54:24,016 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:54:24,100 INFO L225 Difference]: With dead ends: 17812 [2025-04-13 16:54:24,101 INFO L226 Difference]: Without dead ends: 16098 [2025-04-13 16:54:24,125 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103918 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=45063, Invalid=181989, Unknown=0, NotChecked=0, Total=227052 [2025-04-13 16:54:24,127 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 3097 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7318 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 7954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 7318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-04-13 16:54:24,127 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3097 Valid, 8 Invalid, 7954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 7318 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-04-13 16:54:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16098 states. [2025-04-13 16:54:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16098 to 6452. [2025-04-13 16:54:24,998 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 16:54:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6452 states to 6452 states and 20005 transitions. [2025-04-13 16:54:25,032 INFO L79 Accepts]: Start accepts. Automaton has 6452 states and 20005 transitions. Word has length 25 [2025-04-13 16:54:25,033 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:54:25,034 INFO L485 AbstractCegarLoop]: Abstraction has 6452 states and 20005 transitions. [2025-04-13 16:54:25,034 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 16:54:25,034 INFO L278 IsEmpty]: Start isEmpty. Operand 6452 states and 20005 transitions. [2025-04-13 16:54:25,045 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 16:54:25,045 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:54:25,045 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:54:25,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 16:54:25,245 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 16:54:25,246 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 16:54:25,246 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:54:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash -485619176, now seen corresponding path program 1 times [2025-04-13 16:54:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:54:25,246 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484019555] [2025-04-13 16:54:25,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:54:25,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:54:25,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 16:54:25,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 16:54:25,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:54:25,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:54:25,879 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 16:54:25,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:54:25,879 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484019555] [2025-04-13 16:54:25,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484019555] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:54:25,879 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094780904] [2025-04-13 16:54:25,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:54:25,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:54:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:54:25,881 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 16:54:25,883 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 16:54:25,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 16:54:25,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 16:54:25,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:54:25,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:54:25,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 16:54:25,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:54:26,507 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 16:54:26,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:54:27,186 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 16:54:27,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094780904] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:54:27,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:54:27,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 62 [2025-04-13 16:54:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394824622] [2025-04-13 16:54:27,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:54:27,186 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-04-13 16:54:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:54:27,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-04-13 16:54:27,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=3493, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 16:54:27,188 INFO L87 Difference]: Start difference. First operand 6452 states and 20005 transitions. Second operand has 64 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 63 states have internal predecessors, (86), 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 16:54:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:54:48,891 INFO L93 Difference]: Finished difference Result 35926 states and 111165 transitions. [2025-04-13 16:54:48,891 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2025-04-13 16:54:48,891 INFO L79 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 63 states have internal predecessors, (86), 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 16:54:48,892 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:54:48,998 INFO L225 Difference]: With dead ends: 35926 [2025-04-13 16:54:48,999 INFO L226 Difference]: Without dead ends: 35599 [2025-04-13 16:54:49,015 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31198 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=16459, Invalid=63913, Unknown=0, NotChecked=0, Total=80372 [2025-04-13 16:54:49,015 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 2180 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5909 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 6412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 5909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-04-13 16:54:49,015 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 6 Invalid, 6412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 5909 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-04-13 16:54:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35599 states. [2025-04-13 16:54:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35599 to 24333. [2025-04-13 16:54:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24333 states, 24332 states have (on average 3.4146802564524084) internal successors, (83086), 24332 states have internal predecessors, (83086), 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 16:54:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24333 states to 24333 states and 83086 transitions. [2025-04-13 16:54:54,234 INFO L79 Accepts]: Start accepts. Automaton has 24333 states and 83086 transitions. Word has length 29 [2025-04-13 16:54:54,234 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:54:54,234 INFO L485 AbstractCegarLoop]: Abstraction has 24333 states and 83086 transitions. [2025-04-13 16:54:54,234 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 63 states have internal predecessors, (86), 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 16:54:54,234 INFO L278 IsEmpty]: Start isEmpty. Operand 24333 states and 83086 transitions. [2025-04-13 16:54:54,261 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 16:54:54,262 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:54:54,262 INFO L218 NwaCegarLoop]: trace histogram [14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:54:54,268 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 16:54:54,462 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 16:54:54,463 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 16:54:54,463 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:54:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1660259889, now seen corresponding path program 1 times [2025-04-13 16:54:54,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:54:54,463 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362712722] [2025-04-13 16:54:54,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:54:54,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:54:54,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 16:54:54,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 16:54:54,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:54:54,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:54:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:54:55,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:54:55,080 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362712722] [2025-04-13 16:54:55,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362712722] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:54:55,080 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287087213] [2025-04-13 16:54:55,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:54:55,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:54:55,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:54:55,082 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 16:54:55,084 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 16:54:55,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 16:54:55,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 16:54:55,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:54:55,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:54:55,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 16:54:55,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:54:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:54:55,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:54:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:54:56,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287087213] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:54:56,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:54:56,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 16:54:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031385350] [2025-04-13 16:54:56,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:54:56,389 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 16:54:56,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:54:56,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 16:54:56,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=3617, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 16:54:56,390 INFO L87 Difference]: Start difference. First operand 24333 states and 83086 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 16:55:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:55:58,260 INFO L93 Difference]: Finished difference Result 102195 states and 353963 transitions. [2025-04-13 16:55:58,261 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 334 states. [2025-04-13 16:55:58,261 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 16:55:58,261 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:55:58,677 INFO L225 Difference]: With dead ends: 102195 [2025-04-13 16:55:58,678 INFO L226 Difference]: Without dead ends: 101392 [2025-04-13 16:55:58,717 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63775 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=28221, Invalid=124269, Unknown=0, NotChecked=0, Total=152490 [2025-04-13 16:55:58,717 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 3138 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6745 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3138 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 6745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:55:58,718 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3138 Valid, 6 Invalid, 7524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 6745 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-04-13 16:55:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101392 states. [2025-04-13 16:56:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101392 to 80333. [2025-04-13 16:56:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80333 states, 80332 states have (on average 3.6316785340835533) internal successors, (291740), 80332 states have internal predecessors, (291740), 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 16:56:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80333 states to 80333 states and 291740 transitions. [2025-04-13 16:56:21,266 INFO L79 Accepts]: Start accepts. Automaton has 80333 states and 291740 transitions. Word has length 29 [2025-04-13 16:56:21,266 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:56:21,266 INFO L485 AbstractCegarLoop]: Abstraction has 80333 states and 291740 transitions. [2025-04-13 16:56:21,266 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 16:56:21,267 INFO L278 IsEmpty]: Start isEmpty. Operand 80333 states and 291740 transitions. [2025-04-13 16:56:21,313 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 16:56:21,313 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:56:21,313 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:56:21,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-13 16:56:21,513 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 16:56:21,514 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 16:56:21,514 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:56:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -469906826, now seen corresponding path program 2 times [2025-04-13 16:56:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:56:21,514 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924669105] [2025-04-13 16:56:21,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:56:21,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:56:21,518 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-13 16:56:21,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 16:56:21,524 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:56:21,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:56:22,031 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 16:56:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:56:22,032 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924669105] [2025-04-13 16:56:22,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924669105] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:56:22,032 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212627147] [2025-04-13 16:56:22,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:56:22,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:56:22,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:56:22,035 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 16:56:22,036 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 16:56:22,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-04-13 16:56:22,086 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 16:56:22,087 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:56:22,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:56:22,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 16:56:22,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:56:22,623 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 16:56:22,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:56:23,321 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 16:56:23,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212627147] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:56:23,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:56:23,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 16:56:23,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688589785] [2025-04-13 16:56:23,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:56:23,322 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 16:56:23,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:56:23,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 16:56:23,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=552, Invalid=3608, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 16:56:23,323 INFO L87 Difference]: Start difference. First operand 80333 states and 291740 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 16:59:02,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:59:02,961 INFO L93 Difference]: Finished difference Result 381926 states and 1450982 transitions. [2025-04-13 16:59:02,962 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2025-04-13 16:59:02,962 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 16:59:02,962 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:59:05,568 INFO L225 Difference]: With dead ends: 381926 [2025-04-13 16:59:05,568 INFO L226 Difference]: Without dead ends: 381035 [2025-04-13 16:59:05,717 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53640 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=26487, Invalid=107103, Unknown=0, NotChecked=0, Total=133590 [2025-04-13 16:59:05,718 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 2479 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 6600 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 7102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 6600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-04-13 16:59:05,718 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2479 Valid, 4 Invalid, 7102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 6600 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-04-13 16:59:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381035 states. [2025-04-13 17:00:51,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381035 to 350463. [2025-04-13 17:00:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350463 states, 350462 states have (on average 3.882335317381057) internal successors, (1360611), 350462 states have internal predecessors, (1360611), 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 17:00:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350463 states to 350463 states and 1360611 transitions. [2025-04-13 17:00:57,126 INFO L79 Accepts]: Start accepts. Automaton has 350463 states and 1360611 transitions. Word has length 29 [2025-04-13 17:00:57,126 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:00:57,126 INFO L485 AbstractCegarLoop]: Abstraction has 350463 states and 1360611 transitions. [2025-04-13 17:00:57,126 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 17:00:57,130 INFO L278 IsEmpty]: Start isEmpty. Operand 350463 states and 1360611 transitions. [2025-04-13 17:00:57,604 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 17:00:57,604 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:00:57,604 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:00:57,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-13 17:00:57,805 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 17:00:57,805 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 17:00:57,806 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:00:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1996969654, now seen corresponding path program 3 times [2025-04-13 17:00:57,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:00:57,806 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858030322] [2025-04-13 17:00:57,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:00:57,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:00:57,818 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 8 equivalence classes. [2025-04-13 17:00:57,853 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 17:00:57,853 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 17:00:57,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:00:58,709 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 17:00:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:00:58,709 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858030322] [2025-04-13 17:00:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858030322] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:00:58,709 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683923341] [2025-04-13 17:00:58,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:00:58,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:00:58,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:00:58,712 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 17:00:58,713 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 17:00:58,780 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 8 equivalence classes. [2025-04-13 17:00:58,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 17:00:58,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-04-13 17:00:58,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:00:58,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-04-13 17:00:58,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:00:59,869 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 17:00:59,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:01:00,798 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 17:01:00,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683923341] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:01:00,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:01:00,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 17:01:00,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785891963] [2025-04-13 17:01:00,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:01:00,801 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 17:01:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:01:00,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 17:01:00,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=3619, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 17:01:00,803 INFO L87 Difference]: Start difference. First operand 350463 states and 1360611 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 17:06:36,461 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2025-04-13 17:06:36,468 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47622 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=22257, Invalid=93683, Unknown=0, NotChecked=0, Total=115940 [2025-04-13 17:06:36,469 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 2324 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6911 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 6911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:36,469 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2324 Valid, 6 Invalid, 7630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 6911 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-04-13 17:06:36,470 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 17:06:36,476 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 17:06:36,477 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 17:06:36,478 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 17:06:36,675 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 17:06:36,675 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (350463states) and FLOYD_HOARE automaton (currently 284 states, 65 states before enhancement),while ReachableStatesComputation was computing reachable states (658851 states constructed, input type IntersectNwa). [2025-04-13 17:06:36,682 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 17:06:36,682 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 17:06:36,687 INFO L422 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1] [2025-04-13 17:06:36,693 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 17:06:36,694 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 17:06:36,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 05:06:36 BasicIcfg [2025-04-13 17:06:36,699 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 17:06:36,700 INFO L158 Benchmark]: Toolchain (without parser) took 777771.12ms. Allocated memory was 142.6MB in the beginning and 6.6GB in the end (delta: 6.5GB). Free memory was 99.1MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 6.2GB. Max. memory is 8.0GB. [2025-04-13 17:06:36,700 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:36,700 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.74ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 76.3MB in the end (delta: 22.8MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 17:06:36,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.37ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 74.2MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 17:06:36,700 INFO L158 Benchmark]: Boogie Preprocessor took 30.59ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 72.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:36,700 INFO L158 Benchmark]: RCFGBuilder took 394.57ms. Allocated memory is still 142.6MB. Free memory was 72.6MB in the beginning and 46.9MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 17:06:36,701 INFO L158 Benchmark]: TraceAbstraction took 776958.67ms. Allocated memory was 142.6MB in the beginning and 6.6GB in the end (delta: 6.5GB). Free memory was 46.4MB in the beginning and 3.0GB in the end (delta: -3.0GB). Peak memory consumption was 6.1GB. Max. memory is 8.0GB. [2025-04-13 17:06:36,707 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 352.74ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 76.3MB in the end (delta: 22.8MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.37ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 74.2MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.59ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 72.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 394.57ms. Allocated memory is still 142.6MB. Free memory was 72.6MB in the beginning and 46.9MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 776958.67ms. Allocated memory was 142.6MB in the beginning and 6.6GB in the end (delta: 6.5GB). Free memory was 46.4MB in the beginning and 3.0GB in the end (delta: -3.0GB). Peak memory consumption was 6.1GB. 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 (350463states) and FLOYD_HOARE automaton (currently 284 states, 65 states before enhancement),while ReachableStatesComputation was computing reachable states (658851 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 (350463states) and FLOYD_HOARE automaton (currently 284 states, 65 states before enhancement),while ReachableStatesComputation was computing reachable states (658851 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 (350463states) and FLOYD_HOARE automaton (currently 284 states, 65 states before enhancement),while ReachableStatesComputation was computing reachable states (658851 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: 776.9s, OverallIterations: 9, TraceHistogramMax: 14, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.6s, AutomataDifference: 622.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13706 SdHoareTripleChecker+Valid, 15.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13706 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 3153 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33775 IncrementalHoareTripleChecker+Invalid, 36928 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3153 mSolverCounterUnsat, 30 mSDtfsCounter, 33775 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2033 GetRequests, 144 SyntacticMatches, 8 SemanticMatches, 1881 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300265 ImplicationChecksByTransitivity, 110.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=350463occurred in iteration=8, InterpolantAutomatonStates: 1344, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 139.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 72543 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 6794 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1569 ConjunctsInSsa, 294 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 390/1698 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