/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_safe-7.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 16:53:36,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 16:53:36,225 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 16:53:36,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 16:53:36,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 16:53:36,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 16:53:36,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 16:53:36,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 16:53:36,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 16:53:36,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 16:53:36,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 16:53:36,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 16:53:36,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 16:53:36,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 16:53:36,252 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 16:53:36,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 16:53:36,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 16:53:36,252 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 16:53:36,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 16:53:36,254 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 16:53:36,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:36,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:36,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 16:53:36,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 16:53:36,256 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 16:53:36,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 16:53:36,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 16:53:36,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 16:53:36,495 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 16:53:36,496 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 16:53:36,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-7.i [2025-04-13 16:53:37,781 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a53c68047/73c6f063d36249eca242029b5c9c8709/FLAG8ca04c013 [2025-04-13 16:53:38,044 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 16:53:38,046 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-7.i [2025-04-13 16:53:38,061 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a53c68047/73c6f063d36249eca242029b5c9c8709/FLAG8ca04c013 [2025-04-13 16:53:38,831 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a53c68047/73c6f063d36249eca242029b5c9c8709 [2025-04-13 16:53:38,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 16:53:38,834 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 16:53:38,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 16:53:38,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 16:53:38,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 16:53:38,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:53:38" (1/1) ... [2025-04-13 16:53:38,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8f7f05 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 16:53:38,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:53:38" (1/1) ... [2025-04-13 16:53:38,855 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 16:53:39,065 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-7.i[30241,30254] [2025-04-13 16:53:39,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 16:53:39,089 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 16:53:39,123 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-7.i[30241,30254] [2025-04-13 16:53:39,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 16:53:39,158 INFO L204 MainTranslator]: Completed translation [2025-04-13 16:53:39,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39 WrapperNode [2025-04-13 16:53:39,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 16:53:39,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 16:53:39,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 16:53:39,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 16:53:39,163 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 16:53:39,175 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 16:53:39,192 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-04-13 16:53:39,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 16:53:39,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 16:53:39,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 16:53:39,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 16:53:39,198 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 16:53:39,198 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 16:53:39,202 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 16:53:39,211 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 16:53:39,211 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 16:53:39,211 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 16:53:39,214 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 16:53:39,215 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 16:53:39,216 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 16:53:39,218 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 16:53:39,219 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 16:53:39,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 16:53:39,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 16:53:39,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 16:53:39,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 16:53:39,226 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 16:53:39,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:39,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:39,258 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 16:53:39,260 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 16:53:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 16:53:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 16:53:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 16:53:39,277 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 16:53:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 16:53:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 16:53:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 16:53:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 16:53:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 16:53:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 16:53:39,279 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 16:53:39,380 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 16:53:39,382 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 16:53:39,512 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 16:53:39,513 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 16:53:39,513 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 16:53:39,601 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 16:53:39,603 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 16:53:39,606 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 16:53:39,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 04:53:39 BoogieIcfgContainer [2025-04-13 16:53:39,606 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 16:53:39,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 16:53:39,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 16:53:39,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 16:53:39,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 04:53:38" (1/3) ... [2025-04-13 16:53:39,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8f9c5c 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 16:53:39,612 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 16:53:39,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8f9c5c 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 16:53:39,612 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 16:53:39,613 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2025-04-13 16:53:39,622 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 16:53:39,623 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-7.i that has 3 procedures, 21 locations, 23 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 16:53:39,624 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 16:53:39,656 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 16:53:39,677 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 58 flow [2025-04-13 16:53:39,697 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 16:53:39,713 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 16:53:39,721 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;@7164e73b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 16:53:39,721 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 16:53:39,723 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 16:53:39,729 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 16:53:39,729 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:39,729 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:39,729 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 16:53:39,733 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1561770242, now seen corresponding path program 1 times [2025-04-13 16:53:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:39,739 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741855318] [2025-04-13 16:53:39,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:39,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 16:53:39,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 16:53:39,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:39,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:39,938 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 16:53:39,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:39,938 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741855318] [2025-04-13 16:53:39,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741855318] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 16:53:39,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 16:53:39,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 16:53:39,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198147637] [2025-04-13 16:53:39,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 16:53:39,945 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 16:53:39,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:39,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 16:53:39,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 16:53:39,961 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 16:53:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,025 INFO L93 Difference]: Finished difference Result 173 states and 570 transitions. [2025-04-13 16:53:40,026 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 16:53:40,026 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 16:53:40,027 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,032 INFO L225 Difference]: With dead ends: 173 [2025-04-13 16:53:40,032 INFO L226 Difference]: Without dead ends: 109 [2025-04-13 16:53:40,034 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 16:53:40,036 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 16:53:40,037 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 16:53:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-04-13 16:53:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-04-13 16:53:40,073 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 16:53:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 309 transitions. [2025-04-13 16:53:40,095 INFO L79 Accepts]: Start accepts. Automaton has 109 states and 309 transitions. Word has length 11 [2025-04-13 16:53:40,095 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,095 INFO L485 AbstractCegarLoop]: Abstraction has 109 states and 309 transitions. [2025-04-13 16:53:40,095 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 16:53:40,096 INFO L278 IsEmpty]: Start isEmpty. Operand 109 states and 309 transitions. [2025-04-13 16:53:40,096 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 16:53:40,096 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,096 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,097 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 16:53:40,097 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 16:53:40,098 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1170211856, now seen corresponding path program 1 times [2025-04-13 16:53:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:40,098 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833435591] [2025-04-13 16:53:40,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:40,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 16:53:40,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 16:53:40,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,204 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 16:53:40,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,204 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833435591] [2025-04-13 16:53:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833435591] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:40,204 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311779370] [2025-04-13 16:53:40,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:40,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:40,208 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 16:53:40,209 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 16:53:40,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 16:53:40,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 16:53:40,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-13 16:53:40,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:40,302 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 16:53:40,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:40,324 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 16:53:40,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311779370] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:40,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:40,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-04-13 16:53:40,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722272146] [2025-04-13 16:53:40,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,325 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 16:53:40,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 16:53:40,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 16:53:40,326 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 16:53:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,404 INFO L93 Difference]: Finished difference Result 205 states and 629 transitions. [2025-04-13 16:53:40,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 16:53:40,405 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 16:53:40,405 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,407 INFO L225 Difference]: With dead ends: 205 [2025-04-13 16:53:40,407 INFO L226 Difference]: Without dead ends: 157 [2025-04-13 16:53:40,407 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 16:53:40,408 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 74 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 16:53:40,408 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 16:53:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-04-13 16:53:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-04-13 16:53:40,426 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 16:53:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 453 transitions. [2025-04-13 16:53:40,427 INFO L79 Accepts]: Start accepts. Automaton has 157 states and 453 transitions. Word has length 12 [2025-04-13 16:53:40,427 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,427 INFO L485 AbstractCegarLoop]: Abstraction has 157 states and 453 transitions. [2025-04-13 16:53:40,428 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 16:53:40,428 INFO L278 IsEmpty]: Start isEmpty. Operand 157 states and 453 transitions. [2025-04-13 16:53:40,430 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 16:53:40,431 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,431 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,438 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 16:53:40,631 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 16:53:40,631 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 16:53:40,632 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 493351806, now seen corresponding path program 2 times [2025-04-13 16:53:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:40,632 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405956063] [2025-04-13 16:53:40,632 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:53:40,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:40,638 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 16:53:40,648 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 16:53:40,648 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:53:40,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,758 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 16:53:40,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,759 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405956063] [2025-04-13 16:53:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405956063] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:40,759 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288790761] [2025-04-13 16:53:40,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:53:40,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:40,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:40,761 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 16:53:40,763 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 16:53:40,797 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 16:53:40,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 16:53:40,812 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:53:40,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 16:53:40,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:40,828 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 16:53:40,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:40,880 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 16:53:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288790761] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:40,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:40,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 16:53:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676601447] [2025-04-13 16:53:40,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,880 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 16:53:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 16:53:40,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-13 16:53:40,881 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 16:53:41,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:41,014 INFO L93 Difference]: Finished difference Result 301 states and 965 transitions. [2025-04-13 16:53:41,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 16:53:41,016 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 16:53:41,016 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:41,018 INFO L225 Difference]: With dead ends: 301 [2025-04-13 16:53:41,019 INFO L226 Difference]: Without dead ends: 253 [2025-04-13 16:53:41,019 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 16:53:41,022 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 16:53:41,022 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 16:53:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-04-13 16:53:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2025-04-13 16:53:41,040 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 16:53:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 741 transitions. [2025-04-13 16:53:41,042 INFO L79 Accepts]: Start accepts. Automaton has 253 states and 741 transitions. Word has length 15 [2025-04-13 16:53:41,043 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:41,043 INFO L485 AbstractCegarLoop]: Abstraction has 253 states and 741 transitions. [2025-04-13 16:53:41,043 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 16:53:41,043 INFO L278 IsEmpty]: Start isEmpty. Operand 253 states and 741 transitions. [2025-04-13 16:53:41,044 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 16:53:41,044 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:41,044 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:41,053 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 16:53:41,244 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 16:53:41,245 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 16:53:41,245 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1439646146, now seen corresponding path program 3 times [2025-04-13 16:53:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:41,245 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097073511] [2025-04-13 16:53:41,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 16:53:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:41,251 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 16:53:41,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 16:53:41,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 16:53:41,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,500 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 16:53:41,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:41,501 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097073511] [2025-04-13 16:53:41,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097073511] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:41,501 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45078071] [2025-04-13 16:53:41,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 16:53:41,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:41,503 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 16:53:41,503 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 16:53:41,536 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 16:53:41,556 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 16:53:41,556 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 16:53:41,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 16:53:41,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:41,592 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 16:53:41,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:41,722 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 16:53:41,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45078071] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:41,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:41,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 19 [2025-04-13 16:53:41,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884531034] [2025-04-13 16:53:41,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:41,722 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 16:53:41,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:41,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 16:53:41,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2025-04-13 16:53:41,723 INFO L87 Difference]: Start difference. First operand 253 states and 741 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:53:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:41,897 INFO L93 Difference]: Finished difference Result 397 states and 1253 transitions. [2025-04-13 16:53:41,898 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 16:53:41,898 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 16:53:41,898 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:41,900 INFO L225 Difference]: With dead ends: 397 [2025-04-13 16:53:41,901 INFO L226 Difference]: Without dead ends: 349 [2025-04-13 16:53:41,901 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2025-04-13 16:53:41,906 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 244 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:41,907 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 44 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 16:53:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2025-04-13 16:53:41,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2025-04-13 16:53:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.956896551724138) internal successors, (1029), 348 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:53:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1029 transitions. [2025-04-13 16:53:41,936 INFO L79 Accepts]: Start accepts. Automaton has 349 states and 1029 transitions. Word has length 21 [2025-04-13 16:53:41,936 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:41,937 INFO L485 AbstractCegarLoop]: Abstraction has 349 states and 1029 transitions. [2025-04-13 16:53:41,937 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:53:41,937 INFO L278 IsEmpty]: Start isEmpty. Operand 349 states and 1029 transitions. [2025-04-13 16:53:41,941 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 16:53:41,941 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:41,942 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:41,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-13 16:53:42,142 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 16:53:42,142 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 16:53:42,143 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:42,143 INFO L85 PathProgramCache]: Analyzing trace with hash -664372994, now seen corresponding path program 4 times [2025-04-13 16:53:42,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:42,143 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851751955] [2025-04-13 16:53:42,143 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 16:53:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:42,149 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 16:53:42,164 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 16:53:42,164 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 16:53:42,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:43,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:43,135 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851751955] [2025-04-13 16:53:43,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851751955] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:43,135 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146412270] [2025-04-13 16:53:43,135 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 16:53:43,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:43,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:43,137 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 16:53:43,139 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 16:53:43,173 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 16:53:43,196 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 16:53:43,196 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 16:53:43,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:43,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-04-13 16:53:43,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:44,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:45,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146412270] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:45,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:45,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 63 [2025-04-13 16:53:45,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067754789] [2025-04-13 16:53:45,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:45,054 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-04-13 16:53:45,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:45,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-04-13 16:53:45,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=3462, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 16:53:45,056 INFO L87 Difference]: Start difference. First operand 349 states and 1029 transitions. Second operand has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:54:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:54:44,740 INFO L93 Difference]: Finished difference Result 25230 states and 75838 transitions. [2025-04-13 16:54:44,741 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 564 states. [2025-04-13 16:54:44,741 INFO L79 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 16:54:44,741 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:54:44,847 INFO L225 Difference]: With dead ends: 25230 [2025-04-13 16:54:44,847 INFO L226 Difference]: Without dead ends: 22906 [2025-04-13 16:54:44,888 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 607 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175467 ImplicationChecksByTransitivity, 52.9s TimeCoverageRelationStatistics Valid=72398, Invalid=297874, Unknown=0, NotChecked=0, Total=370272 [2025-04-13 16:54:44,888 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 3540 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7845 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3540 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 8590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 7845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-04-13 16:54:44,889 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3540 Valid, 6 Invalid, 8590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 7845 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-04-13 16:54:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22906 states. [2025-04-13 16:54:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22906 to 8894. [2025-04-13 16:54:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8894 states, 8893 states have (on average 3.0955807938828293) internal successors, (27529), 8893 states have internal predecessors, (27529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:54:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8894 states to 8894 states and 27529 transitions. [2025-04-13 16:54:46,267 INFO L79 Accepts]: Start accepts. Automaton has 8894 states and 27529 transitions. Word has length 27 [2025-04-13 16:54:46,268 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:54:46,268 INFO L485 AbstractCegarLoop]: Abstraction has 8894 states and 27529 transitions. [2025-04-13 16:54:46,268 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:54:46,268 INFO L278 IsEmpty]: Start isEmpty. Operand 8894 states and 27529 transitions. [2025-04-13 16:54:46,277 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 16:54:46,277 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:54:46,277 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:54:46,283 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 16:54:46,478 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 16:54:46,478 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 16:54:46,478 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:54:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1484212888, now seen corresponding path program 1 times [2025-04-13 16:54:46,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:54:46,478 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035050190] [2025-04-13 16:54:46,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:54:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:54:46,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 16:54:46,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 16:54:46,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:54:46,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:54:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:54:47,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:54:47,197 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035050190] [2025-04-13 16:54:47,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035050190] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:54:47,197 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347889120] [2025-04-13 16:54:47,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:54:47,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:54:47,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:54:47,199 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 16:54:47,200 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 16:54:47,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 16:54:47,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 16:54:47,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:54:47,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:54:47,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 16:54:47,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:54:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:54:48,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:54:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:54:48,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347889120] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:54:48,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:54:48,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 68 [2025-04-13 16:54:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132023627] [2025-04-13 16:54:48,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:54:48,791 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-04-13 16:54:48,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:54:48,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-04-13 16:54:48,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=4167, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 16:54:48,792 INFO L87 Difference]: Start difference. First operand 8894 states and 27529 transitions. Second operand has 70 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:55:18,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:55:18,898 INFO L93 Difference]: Finished difference Result 52218 states and 160944 transitions. [2025-04-13 16:55:18,899 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2025-04-13 16:55:18,900 INFO L79 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-04-13 16:55:18,900 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:55:19,077 INFO L225 Difference]: With dead ends: 52218 [2025-04-13 16:55:19,077 INFO L226 Difference]: Without dead ends: 51868 [2025-04-13 16:55:19,099 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45245 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=23513, Invalid=87709, Unknown=0, NotChecked=0, Total=111222 [2025-04-13 16:55:19,099 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 2734 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 6696 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2734 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 7341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 6696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-04-13 16:55:19,099 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2734 Valid, 4 Invalid, 7341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 6696 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-04-13 16:55:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51868 states. [2025-04-13 16:55:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51868 to 36229. [2025-04-13 16:55:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36229 states, 36228 states have (on average 3.389201722424644) internal successors, (122784), 36228 states have internal predecessors, (122784), 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 16:55:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36229 states to 36229 states and 122784 transitions. [2025-04-13 16:55:27,211 INFO L79 Accepts]: Start accepts. Automaton has 36229 states and 122784 transitions. Word has length 31 [2025-04-13 16:55:27,212 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:55:27,212 INFO L485 AbstractCegarLoop]: Abstraction has 36229 states and 122784 transitions. [2025-04-13 16:55:27,212 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 69 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:55:27,212 INFO L278 IsEmpty]: Start isEmpty. Operand 36229 states and 122784 transitions. [2025-04-13 16:55:27,249 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 16:55:27,249 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:55:27,249 INFO L218 NwaCegarLoop]: trace histogram [16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:55:27,255 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 16:55:27,450 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 16:55:27,450 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 16:55:27,450 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:55:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1591509873, now seen corresponding path program 1 times [2025-04-13 16:55:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:55:27,451 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10602390] [2025-04-13 16:55:27,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:55:27,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:55:27,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 16:55:27,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 16:55:27,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:55:27,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:55:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:55:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:55:28,260 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10602390] [2025-04-13 16:55:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10602390] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:55:28,260 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573611404] [2025-04-13 16:55:28,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:55:28,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:55:28,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:55:28,263 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 16:55:28,265 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 16:55:28,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 16:55:28,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 16:55:28,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:55:28,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:55:28,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 16:55:28,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:55:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 105 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:55:29,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:55:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:55:29,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573611404] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:55:29,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:55:29,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 16:55:29,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20676721] [2025-04-13 16:55:29,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:55:29,999 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 16:55:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:55:30,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 16:55:30,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=4301, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 16:55:30,000 INFO L87 Difference]: Start difference. First operand 36229 states and 122784 transitions. Second operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:57:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:57:05,428 INFO L93 Difference]: Finished difference Result 151764 states and 522950 transitions. [2025-04-13 16:57:05,429 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2025-04-13 16:57:05,429 INFO L79 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-04-13 16:57:05,429 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:57:06,067 INFO L225 Difference]: With dead ends: 151764 [2025-04-13 16:57:06,067 INFO L226 Difference]: Without dead ends: 150751 [2025-04-13 16:57:06,130 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98931 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=42359, Invalid=183741, Unknown=0, NotChecked=0, Total=226100 [2025-04-13 16:57:06,131 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 4006 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7523 mSolverCounterSat, 979 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4006 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 8502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 979 IncrementalHoareTripleChecker+Valid, 7523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-04-13 16:57:06,131 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4006 Valid, 4 Invalid, 8502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [979 Valid, 7523 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-04-13 16:57:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150751 states. [2025-04-13 16:57:39,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150751 to 119352. [2025-04-13 16:57:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119352 states, 119351 states have (on average 3.6138532563614882) internal successors, (431317), 119351 states have internal predecessors, (431317), 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 16:57:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119352 states to 119352 states and 431317 transitions. [2025-04-13 16:57:40,489 INFO L79 Accepts]: Start accepts. Automaton has 119352 states and 431317 transitions. Word has length 31 [2025-04-13 16:57:40,490 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:57:40,490 INFO L485 AbstractCegarLoop]: Abstraction has 119352 states and 431317 transitions. [2025-04-13 16:57:40,490 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:57:40,490 INFO L278 IsEmpty]: Start isEmpty. Operand 119352 states and 431317 transitions. [2025-04-13 16:57:40,552 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 16:57:40,552 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:57:40,552 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:57:40,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-13 16:57:40,753 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 16:57:40,753 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 16:57:40,753 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:57:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1499925238, now seen corresponding path program 2 times [2025-04-13 16:57:40,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:57:40,753 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312336411] [2025-04-13 16:57:40,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:57:40,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:57:40,757 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 16:57:40,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 16:57:40,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:57:40,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:57:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:57:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:57:41,343 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312336411] [2025-04-13 16:57:41,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312336411] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:57:41,343 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113080407] [2025-04-13 16:57:41,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:57:41,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:57:41,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:57:41,345 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 16:57:41,346 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 16:57:41,382 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 16:57:41,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 16:57:41,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:57:41,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:57:41,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 16:57:41,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:57:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 105 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:57:42,090 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:57:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:57:42,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113080407] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:57:42,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:57:42,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 16:57:42,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113299039] [2025-04-13 16:57:42,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:57:42,853 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 16:57:42,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:57:42,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 16:57:42,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=682, Invalid=4288, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 16:57:42,854 INFO L87 Difference]: Start difference. First operand 119352 states and 431317 transitions. Second operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:02:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:02:12,984 INFO L93 Difference]: Finished difference Result 599515 states and 2262297 transitions. [2025-04-13 17:02:12,984 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 436 states. [2025-04-13 17:02:12,984 INFO L79 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-04-13 17:02:12,985 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:02:17,240 INFO L225 Difference]: With dead ends: 599515 [2025-04-13 17:02:17,240 INFO L226 Difference]: Without dead ends: 598222 [2025-04-13 17:02:17,491 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 497 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107340 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=50974, Invalid=197528, Unknown=0, NotChecked=0, Total=248502 [2025-04-13 17:02:17,491 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 3007 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7737 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3007 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 7737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:02:17,491 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3007 Valid, 8 Invalid, 8376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 7737 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-04-13 17:02:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598222 states. [2025-04-13 17:05:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598222 to 557538. [2025-04-13 17:05:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557538 states, 557537 states have (on average 3.843935021352843) internal successors, (2143136), 557537 states have internal predecessors, (2143136), 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 17:05:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557538 states to 557538 states and 2143136 transitions. [2025-04-13 17:05:35,184 INFO L79 Accepts]: Start accepts. Automaton has 557538 states and 2143136 transitions. Word has length 31 [2025-04-13 17:05:35,189 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:05:35,189 INFO L485 AbstractCegarLoop]: Abstraction has 557538 states and 2143136 transitions. [2025-04-13 17:05:35,191 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:05:35,191 INFO L278 IsEmpty]: Start isEmpty. Operand 557538 states and 2143136 transitions. [2025-04-13 17:05:35,706 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 17:05:35,707 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:05:35,708 INFO L218 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:05:35,724 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 17:05:35,909 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 17:05:35,910 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 17:05:35,911 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:05:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1561538038, now seen corresponding path program 3 times [2025-04-13 17:05:35,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:05:35,911 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325018821] [2025-04-13 17:05:35,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:05:35,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:05:35,969 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 9 equivalence classes. [2025-04-13 17:05:36,180 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 17:05:36,180 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-04-13 17:05:36,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:05:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:05:38,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:05:38,334 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325018821] [2025-04-13 17:05:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325018821] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:05:38,334 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425997591] [2025-04-13 17:05:38,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:05:38,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:05:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:05:38,342 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 17:05:38,344 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 17:05:38,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 9 equivalence classes. [2025-04-13 17:05:38,484 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 17:05:38,484 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-04-13 17:05:38,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:05:38,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 17:05:38,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:05:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 105 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:05:40,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:05:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:05:42,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425997591] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:05:42,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:05:42,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 69 [2025-04-13 17:05:42,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378545683] [2025-04-13 17:05:42,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:05:42,043 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-04-13 17:05:42,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:05:42,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-04-13 17:05:42,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=4301, Unknown=0, NotChecked=0, Total=4970 [2025-04-13 17:05:42,046 INFO L87 Difference]: Start difference. First operand 557538 states and 2143136 transitions. Second operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2025-04-13 17:06:09,890 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 17:06:09,892 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 17:06:09,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2025-04-13 17:06:09,932 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14284 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=9688, Invalid=31318, Unknown=0, NotChecked=0, Total=41006 [2025-04-13 17:06:09,933 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 1376 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4591 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 5127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 4591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:09,934 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 6 Invalid, 5127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 4591 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-04-13 17:06:09,935 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 17:06:09,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 17:06:10,140 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 17:06:10,140 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (557538states) and FLOYD_HOARE automaton (currently 138 states, 71 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-18-1 term,while SimplifyDDA2 was simplifying 18 xjuncts wrt. a ATOM-1 context. [2025-04-13 17:06:10,143 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 17:06:10,143 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 17:06:10,161 INFO L422 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1] [2025-04-13 17:06:10,173 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 17:06:10,173 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 17:06:10,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 05:06:10 BasicIcfg [2025-04-13 17:06:10,182 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 17:06:10,183 INFO L158 Benchmark]: Toolchain (without parser) took 751349.01ms. Allocated memory was 155.2MB in the beginning and 7.3GB in the end (delta: 7.2GB). Free memory was 111.7MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2025-04-13 17:06:10,183 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:10,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.27ms. Allocated memory is still 155.2MB. Free memory was 111.4MB in the beginning and 88.8MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 17:06:10,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.55ms. Allocated memory is still 155.2MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 17:06:10,188 INFO L158 Benchmark]: Boogie Preprocessor took 28.20ms. Allocated memory is still 155.2MB. Free memory was 86.7MB in the beginning and 84.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:10,188 INFO L158 Benchmark]: RCFGBuilder took 381.53ms. Allocated memory is still 155.2MB. Free memory was 84.8MB in the beginning and 58.9MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 17:06:10,189 INFO L158 Benchmark]: TraceAbstraction took 750574.42ms. Allocated memory was 155.2MB in the beginning and 7.3GB in the end (delta: 7.2GB). Free memory was 58.4MB in the beginning and 3.2GB in the end (delta: -3.2GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2025-04-13 17:06:10,190 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.27ms. Allocated memory is still 155.2MB. Free memory was 111.4MB in the beginning and 88.8MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.55ms. Allocated memory is still 155.2MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.20ms. Allocated memory is still 155.2MB. Free memory was 86.7MB in the beginning and 84.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 381.53ms. Allocated memory is still 155.2MB. Free memory was 84.8MB in the beginning and 58.9MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 750574.42ms. Allocated memory was 155.2MB in the beginning and 7.3GB in the end (delta: 7.2GB). Free memory was 58.4MB in the beginning and 3.2GB in the end (delta: -3.2GB). Peak memory consumption was 4.0GB. 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 (557538states) and FLOYD_HOARE automaton (currently 138 states, 71 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-18-1 term,while SimplifyDDA2 was simplifying 18 xjuncts wrt. a ATOM-1 context. - 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 (557538states) and FLOYD_HOARE automaton (currently 138 states, 71 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-18-1 term,while SimplifyDDA2 was simplifying 18 xjuncts wrt. a ATOM-1 context. - 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 (557538states) and FLOYD_HOARE automaton (currently 138 states, 71 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-18-1 term,while SimplifyDDA2 was simplifying 18 xjuncts wrt. a ATOM-1 context. - 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: 750.5s, OverallIterations: 9, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.6s, AutomataDifference: 489.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15191 SdHoareTripleChecker+Valid, 16.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15191 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 14.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 3558 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34698 IncrementalHoareTripleChecker+Invalid, 38256 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3558 mSolverCounterUnsat, 30 mSDtfsCounter, 34698 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2296 GetRequests, 144 SyntacticMatches, 6 SemanticMatches, 2145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441372 ImplicationChecksByTransitivity, 156.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=557538occurred in iteration=8, InterpolantAutomatonStates: 1724, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 240.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 101734 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 583 ConstructedInterpolants, 0 QuantifiedInterpolants, 6955 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1659 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 525/2151 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