/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-10.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 16:53:36,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 16:53:36,202 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 16:53:36,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 16:53:36,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 16:53:36,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 16:53:36,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 16:53:36,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 16:53:36,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 16:53:36,231 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 16:53:36,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 16:53:36,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 16:53:36,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 16:53:36,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 16:53:36,231 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 16:53:36,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 16:53:36,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 16:53:36,232 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 16:53:36,233 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 16:53:36,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:36,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:36,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 16:53:36,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 16:53:36,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 16:53:36,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 16:53:36,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 16:53:36,235 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 16:53:36,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 16:53:36,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 16:53:36,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 16:53:36,506 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 16:53:36,506 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 16:53:36,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-10.i [2025-04-13 16:53:37,810 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6580001/dba4c281ae514b9fa3417f84e036cbd7/FLAG3dced4fed [2025-04-13 16:53:38,054 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 16:53:38,054 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-10.i [2025-04-13 16:53:38,067 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6580001/dba4c281ae514b9fa3417f84e036cbd7/FLAG3dced4fed [2025-04-13 16:53:38,860 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6580001/dba4c281ae514b9fa3417f84e036cbd7 [2025-04-13 16:53:38,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 16:53:38,863 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 16:53:38,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 16:53:38,864 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 16:53:38,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 16:53:38,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:53:38" (1/1) ... [2025-04-13 16:53:38,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db589ae 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 16:53:38,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:53:38" (1/1) ... [2025-04-13 16:53:38,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 16:53:39,157 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-10.i[30241,30254] [2025-04-13 16:53:39,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 16:53:39,197 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 16:53:39,261 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-10.i[30241,30254] [2025-04-13 16:53:39,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 16:53:39,290 INFO L204 MainTranslator]: Completed translation [2025-04-13 16:53:39,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39 WrapperNode [2025-04-13 16:53:39,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 16:53:39,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 16:53:39,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 16:53:39,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 16:53:39,296 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 16:53:39,306 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 16:53:39,321 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-04-13 16:53:39,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 16:53:39,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 16:53:39,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 16:53:39,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 16:53:39,326 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 16:53:39,327 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 16:53:39,330 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 16:53:39,346 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 16:53:39,347 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 16:53:39,347 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 16:53:39,351 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 16:53:39,351 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 16:53:39,353 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 16:53:39,354 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 16:53:39,355 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 16:53:39,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 16:53:39,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 16:53:39,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 16:53:39,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 16:53:39,359 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 16:53:39,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:39,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:39,385 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 16:53:39,387 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 16:53:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 16:53:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 16:53:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 16:53:39,403 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 16:53:39,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 16:53:39,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 16:53:39,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 16:53:39,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 16:53:39,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 16:53:39,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 16:53:39,404 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 16:53:39,505 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 16:53:39,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 16:53:39,635 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 16:53:39,636 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 16:53:39,636 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 16:53:39,767 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 16:53:39,772 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 16:53:39,777 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 16:53:39,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 04:53:39 BoogieIcfgContainer [2025-04-13 16:53:39,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 16:53:39,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 16:53:39,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 16:53:39,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 16:53:39,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 04:53:38" (1/3) ... [2025-04-13 16:53:39,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9136b0 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 16:53:39,784 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 16:53:39,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9136b0 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 16:53:39,784 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 16:53:39,785 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_safe-10.i [2025-04-13 16:53:39,796 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 16:53:39,797 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-10.i that has 3 procedures, 21 locations, 23 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 16:53:39,797 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 16:53:39,836 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 16:53:39,857 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 58 flow [2025-04-13 16:53:39,877 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 16:53:39,899 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 16:53:39,909 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;@741ba31c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 16:53:39,909 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 16:53:39,911 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 16:53:39,918 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 16:53:39,918 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:39,919 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:39,919 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 16:53:39,922 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1561770242, now seen corresponding path program 1 times [2025-04-13 16:53:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:39,928 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085573053] [2025-04-13 16:53:39,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:39,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 16:53:40,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 16:53:40,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:40,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,130 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085573053] [2025-04-13 16:53:40,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085573053] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 16:53:40,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 16:53:40,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 16:53:40,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174608478] [2025-04-13 16:53:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,136 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 16:53:40,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 16:53:40,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 16:53:40,154 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 16:53:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,234 INFO L93 Difference]: Finished difference Result 173 states and 570 transitions. [2025-04-13 16:53:40,236 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 16:53:40,237 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 16:53:40,237 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,244 INFO L225 Difference]: With dead ends: 173 [2025-04-13 16:53:40,244 INFO L226 Difference]: Without dead ends: 109 [2025-04-13 16:53:40,247 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 16:53:40,250 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, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:40,251 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 16:53:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-04-13 16:53:40,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-04-13 16:53:40,304 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 16:53:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 309 transitions. [2025-04-13 16:53:40,310 INFO L79 Accepts]: Start accepts. Automaton has 109 states and 309 transitions. Word has length 11 [2025-04-13 16:53:40,310 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,310 INFO L485 AbstractCegarLoop]: Abstraction has 109 states and 309 transitions. [2025-04-13 16:53:40,310 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 16:53:40,310 INFO L278 IsEmpty]: Start isEmpty. Operand 109 states and 309 transitions. [2025-04-13 16:53:40,313 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 16:53:40,313 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,313 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,313 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 16:53:40,314 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 16:53:40,314 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:40,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1170211856, now seen corresponding path program 1 times [2025-04-13 16:53:40,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:40,314 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641413311] [2025-04-13 16:53:40,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:40,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 16:53:40,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 16:53:40,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,413 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 16:53:40,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,413 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641413311] [2025-04-13 16:53:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641413311] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:40,414 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58923890] [2025-04-13 16:53:40,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:40,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:40,416 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 16:53:40,417 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 16:53:40,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 16:53:40,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 16:53:40,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-13 16:53:40,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:40,510 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 16:53:40,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:40,531 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 16:53:40,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58923890] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:40,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:40,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-04-13 16:53:40,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363256217] [2025-04-13 16:53:40,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,532 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 16:53:40,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 16:53:40,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 16:53:40,533 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 16:53:40,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,629 INFO L93 Difference]: Finished difference Result 205 states and 629 transitions. [2025-04-13 16:53:40,631 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 16:53:40,631 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 16:53:40,631 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,633 INFO L225 Difference]: With dead ends: 205 [2025-04-13 16:53:40,633 INFO L226 Difference]: Without dead ends: 157 [2025-04-13 16:53:40,633 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 16:53:40,634 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 74 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:40,634 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 16:53:40,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-04-13 16:53:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-04-13 16:53:40,651 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 16:53:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 453 transitions. [2025-04-13 16:53:40,654 INFO L79 Accepts]: Start accepts. Automaton has 157 states and 453 transitions. Word has length 12 [2025-04-13 16:53:40,654 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,654 INFO L485 AbstractCegarLoop]: Abstraction has 157 states and 453 transitions. [2025-04-13 16:53:40,655 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 16:53:40,655 INFO L278 IsEmpty]: Start isEmpty. Operand 157 states and 453 transitions. [2025-04-13 16:53:40,655 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 16:53:40,655 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,656 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,665 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 16:53:40,863 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 16:53:40,863 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 16:53:40,863 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:40,863 INFO L85 PathProgramCache]: Analyzing trace with hash 493351806, now seen corresponding path program 2 times [2025-04-13 16:53:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:40,864 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304633761] [2025-04-13 16:53:40,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:53:40,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:40,873 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 16:53:40,895 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 16:53:40,895 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:53:40,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:41,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:41,014 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304633761] [2025-04-13 16:53:41,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304633761] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:41,014 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083452901] [2025-04-13 16:53:41,014 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:53:41,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:41,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:41,017 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 16:53:41,018 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 16:53:41,053 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 16:53:41,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 16:53:41,069 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:53:41,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 16:53:41,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:41,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:41,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083452901] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:41,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:41,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 16:53:41,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364808656] [2025-04-13 16:53:41,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:41,142 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 16:53:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:41,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 16:53:41,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-13 16:53:41,143 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 16:53:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:41,284 INFO L93 Difference]: Finished difference Result 301 states and 965 transitions. [2025-04-13 16:53:41,285 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 16:53:41,285 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 16:53:41,285 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:41,287 INFO L225 Difference]: With dead ends: 301 [2025-04-13 16:53:41,287 INFO L226 Difference]: Without dead ends: 253 [2025-04-13 16:53:41,290 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 16:53:41,290 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 16:53:41,290 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 16:53:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-04-13 16:53:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2025-04-13 16:53:41,317 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 16:53:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 741 transitions. [2025-04-13 16:53:41,321 INFO L79 Accepts]: Start accepts. Automaton has 253 states and 741 transitions. Word has length 15 [2025-04-13 16:53:41,321 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:41,321 INFO L485 AbstractCegarLoop]: Abstraction has 253 states and 741 transitions. [2025-04-13 16:53:41,321 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 16:53:41,321 INFO L278 IsEmpty]: Start isEmpty. Operand 253 states and 741 transitions. [2025-04-13 16:53:41,322 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 16:53:41,322 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:41,322 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:41,330 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 16:53:41,523 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 16:53:41,523 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 16:53:41,524 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1439646146, now seen corresponding path program 3 times [2025-04-13 16:53:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:41,524 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926754428] [2025-04-13 16:53:41,524 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 16:53:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:41,532 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 16:53:41,554 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 16:53:41,554 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 16:53:41,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,771 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 16:53:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:41,772 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926754428] [2025-04-13 16:53:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926754428] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:41,772 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183220121] [2025-04-13 16:53:41,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 16:53:41,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:41,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:41,774 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 16:53:41,776 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 16:53:41,813 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-04-13 16:53:41,837 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 16:53:41,837 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 16:53:41,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 16:53:41,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:41,873 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 16:53:41,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:42,071 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 16:53:42,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183220121] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:42,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:42,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-04-13 16:53:42,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675069384] [2025-04-13 16:53:42,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:42,072 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 16:53:42,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:42,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 16:53:42,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-04-13 16:53:42,073 INFO L87 Difference]: Start difference. First operand 253 states and 741 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:53:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:42,284 INFO L93 Difference]: Finished difference Result 493 states and 1637 transitions. [2025-04-13 16:53:42,284 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 16:53:42,284 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 16:53:42,284 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:42,287 INFO L225 Difference]: With dead ends: 493 [2025-04-13 16:53:42,287 INFO L226 Difference]: Without dead ends: 445 [2025-04-13 16:53:42,288 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-04-13 16:53:42,289 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 332 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:42,289 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 58 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 16:53:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2025-04-13 16:53:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2025-04-13 16:53:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.9662162162162162) internal successors, (1317), 444 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:53:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1317 transitions. [2025-04-13 16:53:42,341 INFO L79 Accepts]: Start accepts. Automaton has 445 states and 1317 transitions. Word has length 21 [2025-04-13 16:53:42,341 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:42,341 INFO L485 AbstractCegarLoop]: Abstraction has 445 states and 1317 transitions. [2025-04-13 16:53:42,341 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:53:42,341 INFO L278 IsEmpty]: Start isEmpty. Operand 445 states and 1317 transitions. [2025-04-13 16:53:42,347 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-04-13 16:53:42,347 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:42,347 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:42,355 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 16:53:42,553 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 16:53:42,553 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 16:53:42,553 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1097522242, now seen corresponding path program 4 times [2025-04-13 16:53:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:42,554 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054935037] [2025-04-13 16:53:42,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 16:53:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:42,560 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-04-13 16:53:42,594 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-04-13 16:53:42,594 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 16:53:42,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:44,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:44,014 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054935037] [2025-04-13 16:53:44,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054935037] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:44,014 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331943024] [2025-04-13 16:53:44,014 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 16:53:44,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:44,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:44,016 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 16:53:44,018 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 16:53:44,064 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-04-13 16:53:44,091 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-04-13 16:53:44,091 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 16:53:44,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:44,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-04-13 16:53:44,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 210 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:45,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331943024] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:46,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:46,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 81 [2025-04-13 16:53:46,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975618981] [2025-04-13 16:53:46,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:46,681 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2025-04-13 16:53:46,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:46,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2025-04-13 16:53:46,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1202, Invalid=5604, Unknown=0, NotChecked=0, Total=6806 [2025-04-13 16:53:46,684 INFO L87 Difference]: Start difference. First operand 445 states and 1317 transitions. Second operand has 83 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 82 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:56:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:56:45,965 INFO L93 Difference]: Finished difference Result 58698 states and 176323 transitions. [2025-04-13 16:56:45,965 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1038 states. [2025-04-13 16:56:45,966 INFO L79 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 82 states have internal predecessors, (99), 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 33 [2025-04-13 16:56:45,966 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:56:46,249 INFO L225 Difference]: With dead ends: 58698 [2025-04-13 16:56:46,249 INFO L226 Difference]: Without dead ends: 53899 [2025-04-13 16:56:46,377 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1103 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1093 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603301 ImplicationChecksByTransitivity, 161.1s TimeCoverageRelationStatistics Valid=229840, Invalid=968090, Unknown=0, NotChecked=0, Total=1197930 [2025-04-13 16:56:46,378 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 5842 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12601 mSolverCounterSat, 1289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5842 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1289 IncrementalHoareTripleChecker+Valid, 12601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2025-04-13 16:56:46,378 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [5842 Valid, 8 Invalid, 13890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1289 Valid, 12601 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2025-04-13 16:56:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53899 states. [2025-04-13 16:56:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53899 to 19490. [2025-04-13 16:56:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19490 states, 19489 states have (on average 3.081173995587254) internal successors, (60049), 19489 states have internal predecessors, (60049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:56:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19490 states to 19490 states and 60049 transitions. [2025-04-13 16:56:50,042 INFO L79 Accepts]: Start accepts. Automaton has 19490 states and 60049 transitions. Word has length 33 [2025-04-13 16:56:50,043 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:56:50,043 INFO L485 AbstractCegarLoop]: Abstraction has 19490 states and 60049 transitions. [2025-04-13 16:56:50,043 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 82 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 16:56:50,043 INFO L278 IsEmpty]: Start isEmpty. Operand 19490 states and 60049 transitions. [2025-04-13 16:56:50,063 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-13 16:56:50,064 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:56:50,064 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:56:50,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 16:56:50,268 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 16:56:50,268 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 16:56:50,269 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:56:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1123961880, now seen corresponding path program 1 times [2025-04-13 16:56:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:56:50,269 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398768994] [2025-04-13 16:56:50,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:56:50,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:56:50,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 16:56:50,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 16:56:50,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:56:50,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:56:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:56:51,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:56:51,470 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398768994] [2025-04-13 16:56:51,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398768994] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:56:51,470 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131579314] [2025-04-13 16:56:51,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:56:51,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:56:51,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:56:51,472 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 16:56:51,473 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 16:56:51,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 16:56:51,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 16:56:51,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:56:51,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:56:51,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-04-13 16:56:51,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:56:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 210 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:56:52,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:56:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:56:53,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131579314] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:56:53,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:56:53,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 86 [2025-04-13 16:56:53,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954173549] [2025-04-13 16:56:53,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:56:53,831 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2025-04-13 16:56:53,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:56:53,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2025-04-13 16:56:53,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=6570, Unknown=0, NotChecked=0, Total=7656 [2025-04-13 16:56:53,832 INFO L87 Difference]: Start difference. First operand 19490 states and 60049 transitions. Second operand has 88 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 87 states have internal predecessors, (111), 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 16:58:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:58:10,564 INFO L93 Difference]: Finished difference Result 119956 states and 367599 transitions. [2025-04-13 16:58:10,564 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 431 states. [2025-04-13 16:58:10,564 INFO L79 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 87 states have internal predecessors, (111), 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 37 [2025-04-13 16:58:10,565 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:58:11,067 INFO L225 Difference]: With dead ends: 119956 [2025-04-13 16:58:11,067 INFO L226 Difference]: Without dead ends: 119507 [2025-04-13 16:58:11,122 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 509 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118067 ImplicationChecksByTransitivity, 38.9s TimeCoverageRelationStatistics Valid=58338, Invalid=202272, Unknown=0, NotChecked=0, Total=260610 [2025-04-13 16:58:11,123 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 4329 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10597 mSolverCounterSat, 1071 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4329 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 11668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1071 IncrementalHoareTripleChecker+Valid, 10597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-04-13 16:58:11,123 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [4329 Valid, 8 Invalid, 11668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1071 Valid, 10597 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-04-13 16:58:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119507 states. [2025-04-13 16:58:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119507 to 85460. [2025-04-13 16:58:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85460 states, 85459 states have (on average 3.365719233784622) internal successors, (287631), 85459 states have internal predecessors, (287631), 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 16:58:33,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85460 states to 85460 states and 287631 transitions. [2025-04-13 16:58:33,747 INFO L79 Accepts]: Start accepts. Automaton has 85460 states and 287631 transitions. Word has length 37 [2025-04-13 16:58:33,748 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:58:33,748 INFO L485 AbstractCegarLoop]: Abstraction has 85460 states and 287631 transitions. [2025-04-13 16:58:33,748 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 87 states have internal predecessors, (111), 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 16:58:33,748 INFO L278 IsEmpty]: Start isEmpty. Operand 85460 states and 287631 transitions. [2025-04-13 16:58:33,829 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-13 16:58:33,829 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:58:33,829 INFO L218 NwaCegarLoop]: trace histogram [22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:58:33,835 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 16:58:34,033 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 16:58:34,033 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 16:58:34,034 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:58:34,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1653636303, now seen corresponding path program 1 times [2025-04-13 16:58:34,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:58:34,034 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311207977] [2025-04-13 16:58:34,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:58:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:58:34,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 16:58:34,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 16:58:34,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:58:34,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:58:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:58:35,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:58:35,069 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311207977] [2025-04-13 16:58:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311207977] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:58:35,069 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017894039] [2025-04-13 16:58:35,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:58:35,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:58:35,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:58:35,071 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 16:58:35,072 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 16:58:35,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-13 16:58:35,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 16:58:35,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:58:35,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:58:35,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-04-13 16:58:35,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:58:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 210 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:58:36,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:58:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:58:37,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017894039] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:58:37,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:58:37,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 87 [2025-04-13 16:58:37,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717134299] [2025-04-13 16:58:37,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:58:37,351 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2025-04-13 16:58:37,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:58:37,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2025-04-13 16:58:37,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=6740, Unknown=0, NotChecked=0, Total=7832 [2025-04-13 16:58:37,353 INFO L87 Difference]: Start difference. First operand 85460 states and 287631 transitions. Second operand has 89 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 88 states have internal predecessors, (111), 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 17:03:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:03:30,469 INFO L93 Difference]: Finished difference Result 394475 states and 1348819 transitions. [2025-04-13 17:03:30,470 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 689 states. [2025-04-13 17:03:30,470 INFO L79 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 88 states have internal predecessors, (111), 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 37 [2025-04-13 17:03:30,470 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:03:33,211 INFO L225 Difference]: With dead ends: 394475 [2025-04-13 17:03:33,212 INFO L226 Difference]: Without dead ends: 392724 [2025-04-13 17:03:33,528 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283003 ImplicationChecksByTransitivity, 109.2s TimeCoverageRelationStatistics Valid=114130, Invalid=478000, Unknown=0, NotChecked=0, Total=592130 [2025-04-13 17:03:33,528 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 6672 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11535 mSolverCounterSat, 1660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6672 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 13195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1660 IncrementalHoareTripleChecker+Valid, 11535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:03:33,528 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [6672 Valid, 6 Invalid, 13195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1660 Valid, 11535 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2025-04-13 17:03:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392724 states. [2025-04-13 17:05:32,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392724 to 312339. [2025-04-13 17:05:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312339 states, 312338 states have (on average 3.591452208825055) internal successors, (1121747), 312338 states have internal predecessors, (1121747), 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 17:05:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312339 states to 312339 states and 1121747 transitions. [2025-04-13 17:05:36,968 INFO L79 Accepts]: Start accepts. Automaton has 312339 states and 1121747 transitions. Word has length 37 [2025-04-13 17:05:36,968 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:05:36,968 INFO L485 AbstractCegarLoop]: Abstraction has 312339 states and 1121747 transitions. [2025-04-13 17:05:36,969 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 88 states have internal predecessors, (111), 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 17:05:36,969 INFO L278 IsEmpty]: Start isEmpty. Operand 312339 states and 1121747 transitions. [2025-04-13 17:05:37,184 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-04-13 17:05:37,184 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:05:37,184 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:05:37,190 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 17:05:37,384 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 17:05:37,385 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 17:05:37,385 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:05:37,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1139674230, now seen corresponding path program 2 times [2025-04-13 17:05:37,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:05:37,385 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899998109] [2025-04-13 17:05:37,386 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:05:37,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:05:37,540 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-04-13 17:05:37,554 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 17:05:37,554 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:05:37,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:05:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:05:38,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:05:38,642 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899998109] [2025-04-13 17:05:38,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899998109] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:05:38,642 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679863043] [2025-04-13 17:05:38,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:05:38,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:05:38,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:05:38,645 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 17:05:38,646 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 17:05:38,687 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-04-13 17:05:38,715 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-04-13 17:05:38,715 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:05:38,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:05:38,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-04-13 17:05:38,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:05:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 210 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:05:39,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:05:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:05:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679863043] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:05:40,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:05:40,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 86 [2025-04-13 17:05:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869563155] [2025-04-13 17:05:40,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:05:40,906 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2025-04-13 17:05:40,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:05:40,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2025-04-13 17:05:40,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1102, Invalid=6554, Unknown=0, NotChecked=0, Total=7656 [2025-04-13 17:05:40,907 INFO L87 Difference]: Start difference. First operand 312339 states and 1121747 transitions. Second operand has 88 states, 87 states have (on average 1.264367816091954) internal successors, (110), 87 states have internal predecessors, (110), 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 17:06:59,571 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 17:06:59,583 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2025-04-13 17:06:59,585 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35361 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=24473, Invalid=78247, Unknown=0, NotChecked=0, Total=102720 [2025-04-13 17:06:59,586 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 2491 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8004 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2491 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 8837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 8004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:59,586 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2491 Valid, 4 Invalid, 8837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 8004 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-04-13 17:06:59,588 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 17:06:59,597 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 17:06:59,620 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 17:06:59,791 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 17:06:59,792 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (312339states) and FLOYD_HOARE automaton (currently 238 states, 88 states before enhancement),while ReachableStatesComputation was computing reachable states (107646 states constructed, input type IntersectNwa). [2025-04-13 17:06:59,794 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 17:06:59,794 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 17:06:59,801 INFO L422 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1] [2025-04-13 17:06:59,809 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 17:06:59,809 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 17:06:59,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 05:06:59 BasicIcfg [2025-04-13 17:06:59,820 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 17:06:59,821 INFO L158 Benchmark]: Toolchain (without parser) took 800958.16ms. Allocated memory was 155.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 108.5MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2025-04-13 17:06:59,822 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:59,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 427.13ms. Allocated memory is still 155.2MB. Free memory was 108.5MB in the beginning and 86.3MB in the end (delta: 22.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 17:06:59,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.45ms. Allocated memory is still 155.2MB. Free memory was 86.3MB in the beginning and 84.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:59,822 INFO L158 Benchmark]: Boogie Preprocessor took 35.64ms. Allocated memory is still 155.2MB. Free memory was 84.4MB in the beginning and 82.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:59,822 INFO L158 Benchmark]: RCFGBuilder took 419.48ms. Allocated memory is still 155.2MB. Free memory was 82.1MB in the beginning and 56.3MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 17:06:59,822 INFO L158 Benchmark]: TraceAbstraction took 800041.66ms. Allocated memory was 155.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 55.7MB in the beginning and 3.7GB in the end (delta: -3.7GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2025-04-13 17:06:59,823 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 427.13ms. Allocated memory is still 155.2MB. Free memory was 108.5MB in the beginning and 86.3MB in the end (delta: 22.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.45ms. Allocated memory is still 155.2MB. Free memory was 86.3MB in the beginning and 84.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 35.64ms. Allocated memory is still 155.2MB. Free memory was 84.4MB in the beginning and 82.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 419.48ms. Allocated memory is still 155.2MB. Free memory was 82.1MB in the beginning and 56.3MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 800041.66ms. Allocated memory was 155.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 55.7MB in the beginning and 3.7GB in the end (delta: -3.7GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (312339states) and FLOYD_HOARE automaton (currently 238 states, 88 states before enhancement),while ReachableStatesComputation was computing reachable states (107646 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (312339states) and FLOYD_HOARE automaton (currently 238 states, 88 states before enhancement),while ReachableStatesComputation was computing reachable states (107646 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (312339states) and FLOYD_HOARE automaton (currently 238 states, 88 states before enhancement),while ReachableStatesComputation was computing reachable states (107646 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 31 locations, 37 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 799.9s, OverallIterations: 8, TraceHistogramMax: 22, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.3s, AutomataDifference: 632.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19950 SdHoareTripleChecker+Valid, 20.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19950 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 17.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107 mSDsCounter, 4868 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43089 IncrementalHoareTripleChecker+Invalid, 47957 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4868 mSolverCounterUnsat, 28 mSDtfsCounter, 43089 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2860 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 2729 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039792 ImplicationChecksByTransitivity, 340.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=312339occurred in iteration=7, InterpolantAutomatonStates: 2203, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 149.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 148841 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 565 ConstructedInterpolants, 0 QuantifiedInterpolants, 6935 SizeOfPredicates, 104 NumberOfNonLiveVariables, 1621 ConjunctsInSsa, 335 ConjunctsInUnsatCore, 22 InterpolantComputations, 1 PerfectInterpolantSequences, 840/3174 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