/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector-loops/overflow_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 05:43:46,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 05:43:46,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 05:43:46,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 05:43:46,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 05:43:46,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 05:43:46,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 05:43:46,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 05:43:46,745 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 05:43:46,745 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 05:43:46,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 05:43:46,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 05:43:46,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 05:43:46,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 05:43:46,747 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 05:43:46,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 05:43:46,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 05:43:46,747 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 05:43:46,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 05:43:46,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 05:43:46,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 05:43:46,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 05:43:46,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 05:43:46,749 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 05:43:46,749 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 05:43:46,749 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 05:43:46,749 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 05:43:46,750 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 05:43:46,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 05:43:46,750 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 05:43:46,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 05:43:46,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 05:43:46,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 05:43:46,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 05:43:46,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:43:46,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 05:43:46,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 05:43:46,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 05:43:46,752 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 05:43:46,752 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 05:43:46,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 05:43:46,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 05:43:46,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 05:43:46,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 05:43:46,753 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:46,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 05:43:46,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 05:43:46,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 05:43:46,962 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 05:43:46,963 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 05:43:46,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/overflow_1-2.c [2024-11-03 05:43:48,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 05:43:48,403 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 05:43:48,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/overflow_1-2.c [2024-11-03 05:43:48,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07c8b65f/24c6065f99054c07a69558d673e8a8e7/FLAG542902f0e [2024-11-03 05:43:48,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07c8b65f/24c6065f99054c07a69558d673e8a8e7 [2024-11-03 05:43:48,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 05:43:48,831 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 05:43:48,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 05:43:48,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 05:43:48,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 05:43:48,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:43:48" (1/1) ... [2024-11-03 05:43:48,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63befa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:48, skipping insertion in model container [2024-11-03 05:43:48,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:43:48" (1/1) ... [2024-11-03 05:43:48,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 05:43:48,966 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/overflow_1-2.c[324,337] [2024-11-03 05:43:48,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:43:48,983 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 05:43:48,992 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/overflow_1-2.c[324,337] [2024-11-03 05:43:48,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:43:49,007 INFO L204 MainTranslator]: Completed translation [2024-11-03 05:43:49,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49 WrapperNode [2024-11-03 05:43:49,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 05:43:49,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 05:43:49,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 05:43:49,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 05:43:49,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,032 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2024-11-03 05:43:49,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 05:43:49,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 05:43:49,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 05:43:49,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 05:43:49,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,041 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,048 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]. [2024-11-03 05:43:49,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 05:43:49,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 05:43:49,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 05:43:49,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 05:43:49,057 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (1/1) ... [2024-11-03 05:43:49,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:43:49,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 05:43:49,087 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) [2024-11-03 05:43:49,089 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 [2024-11-03 05:43:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 05:43:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 05:43:49,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 05:43:49,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 05:43:49,170 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 05:43:49,173 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 05:43:49,255 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-03 05:43:49,256 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 05:43:49,267 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 05:43:49,267 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 05:43:49,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:49 BoogieIcfgContainer [2024-11-03 05:43:49,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 05:43:49,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 05:43:49,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 05:43:49,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 05:43:49,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:43:48" (1/3) ... [2024-11-03 05:43:49,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13620229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:49, skipping insertion in model container [2024-11-03 05:43:49,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:49" (2/3) ... [2024-11-03 05:43:49,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13620229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:49, skipping insertion in model container [2024-11-03 05:43:49,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:49" (3/3) ... [2024-11-03 05:43:49,276 INFO L112 eAbstractionObserver]: Analyzing ICFG overflow_1-2.c [2024-11-03 05:43:49,290 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 05:43:49,290 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 05:43:49,340 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 05:43:49,345 INFO L333 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=PETRI_NET, 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;@53007b34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 05:43:49,346 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 05:43:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2024-11-03 05:43:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-03 05:43:49,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:49,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-03 05:43:49,356 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:49,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2024-11-03 05:43:49,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:49,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955133400] [2024-11-03 05:43:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:49,369 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:49,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:49,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:49,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 05:43:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:49,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 05:43:49,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:49,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:49,496 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:49,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955133400] [2024-11-03 05:43:49,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1955133400] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:49,497 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:49,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 05:43:49,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811815440] [2024-11-03 05:43:49,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:49,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 05:43:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 05:43:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 05:43:49,521 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-03 05:43:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:49,554 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2024-11-03 05:43:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 05:43:49,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 6 [2024-11-03 05:43:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:49,562 INFO L225 Difference]: With dead ends: 21 [2024-11-03 05:43:49,562 INFO L226 Difference]: Without dead ends: 9 [2024-11-03 05:43:49,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 05:43:49,568 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:49,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-03 05:43:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-03 05:43:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2024-11-03 05:43:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-03 05:43:49,595 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2024-11-03 05:43:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:49,596 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-03 05:43:49,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-03 05:43:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-03 05:43:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-03 05:43:49,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:49,598 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:49,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 05:43:49,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:49,801 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:49,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2024-11-03 05:43:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372325893] [2024-11-03 05:43:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:49,802 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:49,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:49,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:49,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 05:43:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:49,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 05:43:49,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:49,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:49,934 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:49,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372325893] [2024-11-03 05:43:49,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [372325893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:49,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:49,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 05:43:49,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859663452] [2024-11-03 05:43:49,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:49,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 05:43:49,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 05:43:49,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 05:43:49,941 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2024-11-03 05:43:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:50,010 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2024-11-03 05:43:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 05:43:50,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 8 [2024-11-03 05:43:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:50,011 INFO L225 Difference]: With dead ends: 17 [2024-11-03 05:43:50,012 INFO L226 Difference]: Without dead ends: 13 [2024-11-03 05:43:50,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-03 05:43:50,013 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:50,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-03 05:43:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-03 05:43:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2024-11-03 05:43:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-11-03 05:43:50,018 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2024-11-03 05:43:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:50,018 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-11-03 05:43:50,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2024-11-03 05:43:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-11-03 05:43:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 05:43:50,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:50,019 INFO L215 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:50,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 05:43:50,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:50,222 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:50,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2024-11-03 05:43:50,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:50,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486904866] [2024-11-03 05:43:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:50,223 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:50,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:50,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 05:43:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:50,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 05:43:50,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:50,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:50,498 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:50,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486904866] [2024-11-03 05:43:50,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [486904866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:50,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:50,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 05:43:50,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255879023] [2024-11-03 05:43:50,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:50,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 05:43:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 05:43:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-03 05:43:50,501 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2024-11-03 05:43:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:50,747 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2024-11-03 05:43:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 05:43:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 [2024-11-03 05:43:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:50,748 INFO L225 Difference]: With dead ends: 25 [2024-11-03 05:43:50,748 INFO L226 Difference]: Without dead ends: 21 [2024-11-03 05:43:50,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=320, Unknown=0, NotChecked=0, Total=506 [2024-11-03 05:43:50,749 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:50,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-03 05:43:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-03 05:43:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2024-11-03 05:43:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-11-03 05:43:50,754 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2024-11-03 05:43:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:50,755 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-11-03 05:43:50,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2024-11-03 05:43:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-11-03 05:43:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-03 05:43:50,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:50,756 INFO L215 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:50,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 05:43:50,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:50,958 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:50,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:50,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2078182539, now seen corresponding path program 3 times [2024-11-03 05:43:50,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:50,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165991009] [2024-11-03 05:43:50,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:50,959 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:50,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:50,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:50,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 05:43:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:51,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 05:43:51,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:51,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:51,548 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:51,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165991009] [2024-11-03 05:43:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1165991009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:51,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:51,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-11-03 05:43:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052312517] [2024-11-03 05:43:51,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:51,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-03 05:43:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-03 05:43:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2024-11-03 05:43:51,550 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 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) [2024-11-03 05:43:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:52,503 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2024-11-03 05:43:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-03 05:43:52,504 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 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 20 [2024-11-03 05:43:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:52,504 INFO L225 Difference]: With dead ends: 41 [2024-11-03 05:43:52,504 INFO L226 Difference]: Without dead ends: 37 [2024-11-03 05:43:52,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=762, Invalid=1400, Unknown=0, NotChecked=0, Total=2162 [2024-11-03 05:43:52,506 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:52,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-03 05:43:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-03 05:43:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 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) [2024-11-03 05:43:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2024-11-03 05:43:52,516 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 20 [2024-11-03 05:43:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:52,516 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2024-11-03 05:43:52,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 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) [2024-11-03 05:43:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2024-11-03 05:43:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-03 05:43:52,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:52,518 INFO L215 NwaCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:52,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 05:43:52,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:52,719 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:52,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash -24784501, now seen corresponding path program 4 times [2024-11-03 05:43:52,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:52,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614778174] [2024-11-03 05:43:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:52,720 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:52,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:52,722 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:52,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 05:43:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:52,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-03 05:43:52,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:53,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:43:54,431 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:54,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614778174] [2024-11-03 05:43:54,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1614778174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:54,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:54,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2024-11-03 05:43:54,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250257369] [2024-11-03 05:43:54,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:54,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-03 05:43:54,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:54,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-03 05:43:54,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2024-11-03 05:43:54,435 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 64 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 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) [2024-11-03 05:43:59,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:59,684 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2024-11-03 05:43:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-03 05:43:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 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 36 [2024-11-03 05:43:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:59,689 INFO L225 Difference]: With dead ends: 73 [2024-11-03 05:43:59,689 INFO L226 Difference]: Without dead ends: 69 [2024-11-03 05:43:59,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3066, Invalid=5864, Unknown=0, NotChecked=0, Total=8930 [2024-11-03 05:43:59,692 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:59,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-03 05:43:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-03 05:43:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 05:43:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2024-11-03 05:43:59,704 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 36 [2024-11-03 05:43:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:59,705 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2024-11-03 05:43:59,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 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) [2024-11-03 05:43:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2024-11-03 05:43:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-03 05:43:59,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:59,706 INFO L215 NwaCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:59,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 05:43:59,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:59,907 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:59,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1750489995, now seen corresponding path program 5 times [2024-11-03 05:43:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:59,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845426] [2024-11-03 05:43:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:59,908 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:59,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:59,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:59,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 05:43:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:59,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-03 05:43:59,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:44:01,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:44:05,290 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:05,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845426] [2024-11-03 05:44:05,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [845426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:05,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:05,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 128 [2024-11-03 05:44:05,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170165967] [2024-11-03 05:44:05,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:05,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-03 05:44:05,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-03 05:44:05,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2024-11-03 05:44:05,296 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 128 states, 128 states have (on average 1.03125) internal successors, (132), 128 states have internal predecessors, (132), 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) [2024-11-03 05:44:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:45,652 INFO L93 Difference]: Finished difference Result 137 states and 200 transitions. [2024-11-03 05:44:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2024-11-03 05:44:45,653 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.03125) internal successors, (132), 128 states have internal predecessors, (132), 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 68 [2024-11-03 05:44:45,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:45,654 INFO L225 Difference]: With dead ends: 137 [2024-11-03 05:44:45,654 INFO L226 Difference]: Without dead ends: 133 [2024-11-03 05:44:45,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=12282, Invalid=24008, Unknown=0, NotChecked=0, Total=36290 [2024-11-03 05:44:45,660 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 4238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:45,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 4238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-03 05:44:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-03 05:44:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-03 05:44:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0075757575757576) internal successors, (133), 132 states have internal predecessors, (133), 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) [2024-11-03 05:44:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2024-11-03 05:44:45,685 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 68 [2024-11-03 05:44:45,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:45,685 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2024-11-03 05:44:45,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 1.03125) internal successors, (132), 128 states have internal predecessors, (132), 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) [2024-11-03 05:44:45,686 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2024-11-03 05:44:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-03 05:44:45,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:45,688 INFO L215 NwaCegarLoop]: trace histogram [126, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:45,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 05:44:45,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:45,890 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:45,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash -33591413, now seen corresponding path program 6 times [2024-11-03 05:44:45,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:45,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70272131] [2024-11-03 05:44:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:45,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:45,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:45,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:45,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 05:44:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:45,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-03 05:44:45,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:44:50,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:45:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 05:45:06,883 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:45:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70272131] [2024-11-03 05:45:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [70272131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:45:06,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:45:06,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 256 [2024-11-03 05:45:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410353251] [2024-11-03 05:45:06,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:45:06,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2024-11-03 05:45:06,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:45:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2024-11-03 05:45:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16638, Invalid=48642, Unknown=0, NotChecked=0, Total=65280 [2024-11-03 05:45:06,891 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand has 256 states, 256 states have (on average 1.015625) internal successors, (260), 256 states have internal predecessors, (260), 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)