/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 04:09:37,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 04:09:37,134 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 04:09:37,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 04:09:37,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 04:09:37,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 04:09:37,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 04:09:37,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 04:09:37,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 04:09:37,158 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 04:09:37,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 04:09:37,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 04:09:37,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 04:09:37,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 04:09:37,159 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 04:09:37,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 04:09:37,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 04:09:37,163 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 04:09:37,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 04:09:37,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 04:09:37,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 04:09:37,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 04:09:37,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 04:09:37,164 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 04:09:37,164 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 04:09:37,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 04:09:37,164 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 04:09:37,164 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 04:09:37,165 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 04:09:37,165 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 04:09:37,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 04:09:37,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 04:09:37,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 04:09:37,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 04:09:37,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 04:09:37,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 04:09:37,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 04:09:37,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 04:09:37,166 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 04:09:37,166 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:37,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 04:09:37,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 04:09:37,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 04:09:37,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 04:09:37,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:37,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 04:09:37,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 04:09:37,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 04:09:37,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 04:09:37,344 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 04:09:37,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c [2024-11-03 04:09:38,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 04:09:38,745 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 04:09:38,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c [2024-11-03 04:09:38,750 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d373092a/3b0d5569e3f24cfda55509ec149746c8/FLAG20942511e [2024-11-03 04:09:39,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d373092a/3b0d5569e3f24cfda55509ec149746c8 [2024-11-03 04:09:39,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 04:09:39,174 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 04:09:39,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 04:09:39,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 04:09:39,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 04:09:39,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592d65fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39, skipping insertion in model container [2024-11-03 04:09:39,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,199 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 04:09:39,321 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-03 04:09:39,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 04:09:39,343 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 04:09:39,350 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries2.c[613,626] [2024-11-03 04:09:39,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 04:09:39,371 INFO L204 MainTranslator]: Completed translation [2024-11-03 04:09:39,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39 WrapperNode [2024-11-03 04:09:39,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 04:09:39,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 04:09:39,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 04:09:39,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 04:09:39,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,409 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-11-03 04:09:39,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 04:09:39,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 04:09:39,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 04:09:39,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 04:09:39,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,441 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-11-03 04:09:39,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 04:09:39,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 04:09:39,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 04:09:39,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 04:09:39,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (1/1) ... [2024-11-03 04:09:39,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 04:09:39,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 04:09:39,475 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 04:09:39,477 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 04:09:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 04:09:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 04:09:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 04:09:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 04:09:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 04:09:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 04:09:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 04:09:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 04:09:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-03 04:09:39,495 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-03 04:09:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 04:09:39,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 04:09:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 04:09:39,565 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 04:09:39,566 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 04:09:39,758 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-03 04:09:39,759 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 04:09:39,771 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 04:09:39,772 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 04:09:39,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:39 BoogieIcfgContainer [2024-11-03 04:09:39,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 04:09:39,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 04:09:39,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 04:09:39,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 04:09:39,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:39" (1/3) ... [2024-11-03 04:09:39,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5c64a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:39, skipping insertion in model container [2024-11-03 04:09:39,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:39" (2/3) ... [2024-11-03 04:09:39,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5c64a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:39, skipping insertion in model container [2024-11-03 04:09:39,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:39" (3/3) ... [2024-11-03 04:09:39,781 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries2.c [2024-11-03 04:09:39,793 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 04:09:39,793 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 04:09:39,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 04:09:39,836 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;@1f468cf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 04:09:39,836 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 04:09:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 04:09:39,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:39,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:39,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:39,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1909413201, now seen corresponding path program 1 times [2024-11-03 04:09:39,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:39,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040848790] [2024-11-03 04:09:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:39,856 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:39,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:39,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:39,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 04:09:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:39,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:39,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:40,019 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 04:09:40,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:40,074 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 04:09:40,075 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040848790] [2024-11-03 04:09:40,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2040848790] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:40,076 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:40,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 04:09:40,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668263523] [2024-11-03 04:09:40,080 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:40,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 04:09:40,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:40,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 04:09:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 04:09:40,102 INFO L87 Difference]: Start difference. First operand has 39 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 04:09:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:40,145 INFO L93 Difference]: Finished difference Result 75 states and 108 transitions. [2024-11-03 04:09:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 04:09:40,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-03 04:09:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:40,152 INFO L225 Difference]: With dead ends: 75 [2024-11-03 04:09:40,152 INFO L226 Difference]: Without dead ends: 39 [2024-11-03 04:09:40,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 04:09:40,158 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:40,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-03 04:09:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-03 04:09:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 04:09:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2024-11-03 04:09:40,184 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2024-11-03 04:09:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:40,184 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2024-11-03 04:09:40,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 04:09:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2024-11-03 04:09:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 04:09:40,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:40,186 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:40,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 04:09:40,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:40,388 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:40,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2092151088, now seen corresponding path program 1 times [2024-11-03 04:09:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723227963] [2024-11-03 04:09:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:40,390 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:40,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:40,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:40,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 04:09:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:40,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 04:09:40,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:40,467 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 04:09:40,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:40,486 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 04:09:40,487 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:40,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723227963] [2024-11-03 04:09:40,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [723227963] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:40,487 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:40,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 04:09:40,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810538859] [2024-11-03 04:09:40,487 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:40,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 04:09:40,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 04:09:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 04:09:40,489 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 04:09:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:40,507 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-03 04:09:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 04:09:40,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-03 04:09:40,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:40,511 INFO L225 Difference]: With dead ends: 43 [2024-11-03 04:09:40,511 INFO L226 Difference]: Without dead ends: 39 [2024-11-03 04:09:40,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 04:09:40,512 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:40,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-03 04:09:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-03 04:09:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 04:09:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2024-11-03 04:09:40,522 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 17 [2024-11-03 04:09:40,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:40,523 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2024-11-03 04:09:40,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 04:09:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2024-11-03 04:09:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-03 04:09:40,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:40,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:40,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 04:09:40,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:40,725 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:40,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:40,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1014348991, now seen corresponding path program 1 times [2024-11-03 04:09:40,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:40,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803788123] [2024-11-03 04:09:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:40,727 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:40,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:40,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:40,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 04:09:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:40,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:40,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:40,806 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 04:09:40,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:40,818 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 04:09:40,819 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:40,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803788123] [2024-11-03 04:09:40,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1803788123] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:40,819 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2024-11-03 04:09:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317224055] [2024-11-03 04:09:40,820 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:40,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 04:09:40,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 04:09:40,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 04:09:40,821 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 04:09:40,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:40,854 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2024-11-03 04:09:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 04:09:40,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-03 04:09:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:40,855 INFO L225 Difference]: With dead ends: 72 [2024-11-03 04:09:40,855 INFO L226 Difference]: Without dead ends: 39 [2024-11-03 04:09:40,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 04:09:40,856 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:40,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-03 04:09:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2024-11-03 04:09:40,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:40,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-03 04:09:40,862 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 19 [2024-11-03 04:09:40,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:40,863 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-03 04:09:40,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 04:09:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-03 04:09:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-03 04:09:40,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:40,864 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:40,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 04:09:41,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:41,067 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:41,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash 683802393, now seen corresponding path program 1 times [2024-11-03 04:09:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:41,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163134550] [2024-11-03 04:09:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:41,068 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:41,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:41,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:41,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 04:09:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:41,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 04:09:41,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:41,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:41,162 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:41,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163134550] [2024-11-03 04:09:41,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [163134550] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:41,162 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:41,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 04:09:41,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341527435] [2024-11-03 04:09:41,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:41,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 04:09:41,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:41,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 04:09:41,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 04:09:41,164 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:41,183 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-11-03 04:09:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 04:09:41,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-11-03 04:09:41,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:41,184 INFO L225 Difference]: With dead ends: 40 [2024-11-03 04:09:41,184 INFO L226 Difference]: Without dead ends: 35 [2024-11-03 04:09:41,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 04:09:41,185 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:41,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-03 04:09:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-03 04:09:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-03 04:09:41,192 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 37 [2024-11-03 04:09:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:41,192 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-03 04:09:41,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-03 04:09:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 04:09:41,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:41,193 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:41,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:41,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:41,394 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:41,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:41,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689165, now seen corresponding path program 1 times [2024-11-03 04:09:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:41,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353607439] [2024-11-03 04:09:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:41,395 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:41,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:41,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:41,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 04:09:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:41,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 04:09:41,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:41,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:41,516 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353607439] [2024-11-03 04:09:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [353607439] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:41,516 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 04:09:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543639836] [2024-11-03 04:09:41,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:41,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 04:09:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 04:09:41,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:41,518 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:41,542 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2024-11-03 04:09:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 04:09:41,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2024-11-03 04:09:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:41,543 INFO L225 Difference]: With dead ends: 52 [2024-11-03 04:09:41,543 INFO L226 Difference]: Without dead ends: 45 [2024-11-03 04:09:41,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 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 04:09:41,544 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:41,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 70 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-03 04:09:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-03 04:09:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-11-03 04:09:41,552 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 40 [2024-11-03 04:09:41,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:41,553 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-11-03 04:09:41,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:41,553 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-11-03 04:09:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-03 04:09:41,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:41,554 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:41,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:41,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:41,754 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:41,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash 35157834, now seen corresponding path program 1 times [2024-11-03 04:09:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:41,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844353865] [2024-11-03 04:09:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:41,755 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:41,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:41,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:41,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 04:09:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:41,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:41,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:41,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:41,887 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:41,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844353865] [2024-11-03 04:09:41,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [844353865] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:41,888 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:41,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 04:09:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256742069] [2024-11-03 04:09:41,888 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:41,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 04:09:41,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 04:09:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:41,889 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:41,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:41,912 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-11-03 04:09:41,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 04:09:41,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-03 04:09:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:41,915 INFO L225 Difference]: With dead ends: 49 [2024-11-03 04:09:41,915 INFO L226 Difference]: Without dead ends: 43 [2024-11-03 04:09:41,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:41,916 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:41,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-03 04:09:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-03 04:09:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-03 04:09:41,920 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 42 [2024-11-03 04:09:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:41,920 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-03 04:09:41,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-03 04:09:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 04:09:41,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:41,922 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:41,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 04:09:42,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:42,123 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:42,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 542098259, now seen corresponding path program 1 times [2024-11-03 04:09:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:42,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825326587] [2024-11-03 04:09:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:42,124 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:42,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:42,125 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:42,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 04:09:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:42,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 04:09:42,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 04:09:42,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 04:09:42,242 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825326587] [2024-11-03 04:09:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [825326587] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:42,242 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:42,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 04:09:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030343017] [2024-11-03 04:09:42,242 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:42,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 04:09:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 04:09:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:42,243 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:42,262 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2024-11-03 04:09:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 04:09:42,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-11-03 04:09:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:42,263 INFO L225 Difference]: With dead ends: 69 [2024-11-03 04:09:42,263 INFO L226 Difference]: Without dead ends: 51 [2024-11-03 04:09:42,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 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 04:09:42,264 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:42,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 105 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-03 04:09:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-03 04:09:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2024-11-03 04:09:42,268 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 50 [2024-11-03 04:09:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:42,268 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2024-11-03 04:09:42,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2024-11-03 04:09:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-03 04:09:42,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:42,271 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:42,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:42,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:42,472 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:42,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:42,473 INFO L85 PathProgramCache]: Analyzing trace with hash 841034003, now seen corresponding path program 1 times [2024-11-03 04:09:42,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:42,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958176240] [2024-11-03 04:09:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:42,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:42,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:42,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:42,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 04:09:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:42,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:42,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-03 04:09:42,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-03 04:09:42,677 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:42,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958176240] [2024-11-03 04:09:42,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1958176240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:42,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:42,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 04:09:42,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636624948] [2024-11-03 04:09:42,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:42,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 04:09:42,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:42,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 04:09:42,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 04:09:42,678 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:42,721 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2024-11-03 04:09:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 04:09:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2024-11-03 04:09:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:42,723 INFO L225 Difference]: With dead ends: 85 [2024-11-03 04:09:42,723 INFO L226 Difference]: Without dead ends: 63 [2024-11-03 04:09:42,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 04:09:42,723 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:42,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 219 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-03 04:09:42,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-03 04:09:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2024-11-03 04:09:42,728 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 62 [2024-11-03 04:09:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:42,728 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2024-11-03 04:09:42,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2024-11-03 04:09:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 04:09:42,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:42,729 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:42,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-03 04:09:42,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:42,930 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:42,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash 923057875, now seen corresponding path program 2 times [2024-11-03 04:09:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:42,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606556449] [2024-11-03 04:09:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:42,931 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:42,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:42,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:42,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-03 04:09:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:43,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:43,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 04:09:43,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 04:09:43,206 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:43,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606556449] [2024-11-03 04:09:43,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [606556449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:43,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:43,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 04:09:43,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487544752] [2024-11-03 04:09:43,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:43,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 04:09:43,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 04:09:43,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 04:09:43,207 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:43,260 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2024-11-03 04:09:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 04:09:43,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2024-11-03 04:09:43,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:43,261 INFO L225 Difference]: With dead ends: 104 [2024-11-03 04:09:43,261 INFO L226 Difference]: Without dead ends: 97 [2024-11-03 04:09:43,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 04:09:43,262 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 28 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:43,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 188 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:43,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-03 04:09:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-03 04:09:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 91 states have internal predecessors, (113), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2024-11-03 04:09:43,271 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 74 [2024-11-03 04:09:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:43,272 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2024-11-03 04:09:43,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:43,272 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2024-11-03 04:09:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:09:43,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:43,273 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:43,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:43,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:43,473 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:43,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:43,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2022113907, now seen corresponding path program 3 times [2024-11-03 04:09:43,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:43,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279439953] [2024-11-03 04:09:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:43,474 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:43,475 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:43,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-03 04:09:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:43,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-03 04:09:43,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-03 04:09:43,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:44,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:44,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-11-03 04:09:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-03 04:09:44,215 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:44,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279439953] [2024-11-03 04:09:44,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [279439953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:44,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:44,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-03 04:09:44,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516721844] [2024-11-03 04:09:44,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:44,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-03 04:09:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-03 04:09:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2024-11-03 04:09:44,217 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:44,898 INFO L93 Difference]: Finished difference Result 213 states and 269 transitions. [2024-11-03 04:09:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-03 04:09:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 04:09:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:44,899 INFO L225 Difference]: With dead ends: 213 [2024-11-03 04:09:44,899 INFO L226 Difference]: Without dead ends: 139 [2024-11-03 04:09:44,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2024-11-03 04:09:44,901 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:44,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 376 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 04:09:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-03 04:09:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 124. [2024-11-03 04:09:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.2627118644067796) internal successors, (149), 118 states have internal predecessors, (149), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 157 transitions. [2024-11-03 04:09:44,913 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 157 transitions. Word has length 108 [2024-11-03 04:09:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:44,913 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 157 transitions. [2024-11-03 04:09:44,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 157 transitions. [2024-11-03 04:09:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:09:44,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:44,917 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:44,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-03 04:09:45,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:45,117 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:45,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash 111071349, now seen corresponding path program 1 times [2024-11-03 04:09:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:45,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767539644] [2024-11-03 04:09:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:45,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:45,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-03 04:09:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:45,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-03 04:09:45,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 245 proven. 103 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-03 04:09:45,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:45,924 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:45,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 04:09:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 247 proven. 95 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-03 04:09:46,023 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:46,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767539644] [2024-11-03 04:09:46,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [767539644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:46,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:46,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2024-11-03 04:09:46,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857463854] [2024-11-03 04:09:46,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:46,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-03 04:09:46,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-03 04:09:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-11-03 04:09:46,025 INFO L87 Difference]: Start difference. First operand 124 states and 157 transitions. Second operand has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:46,825 INFO L93 Difference]: Finished difference Result 272 states and 349 transitions. [2024-11-03 04:09:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-03 04:09:46,826 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 04:09:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:46,827 INFO L225 Difference]: With dead ends: 272 [2024-11-03 04:09:46,827 INFO L226 Difference]: Without dead ends: 211 [2024-11-03 04:09:46,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2024-11-03 04:09:46,828 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 170 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:46,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 622 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 04:09:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-03 04:09:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 185. [2024-11-03 04:09:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 179 states have (on average 1.2849162011173185) internal successors, (230), 179 states have internal predecessors, (230), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 238 transitions. [2024-11-03 04:09:46,839 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 238 transitions. Word has length 108 [2024-11-03 04:09:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:46,839 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 238 transitions. [2024-11-03 04:09:46,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 238 transitions. [2024-11-03 04:09:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:09:46,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:46,840 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:46,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-03 04:09:47,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:47,041 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:47,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -238521867, now seen corresponding path program 2 times [2024-11-03 04:09:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624447829] [2024-11-03 04:09:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:47,042 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:47,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:47,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:47,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-03 04:09:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:47,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-03 04:09:47,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 224 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-03 04:09:47,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:48,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:48,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 04:09:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 188 proven. 222 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-03 04:09:48,129 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:48,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624447829] [2024-11-03 04:09:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1624447829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:48,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:48,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2024-11-03 04:09:48,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771227207] [2024-11-03 04:09:48,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:48,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-03 04:09:48,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-03 04:09:48,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2024-11-03 04:09:48,131 INFO L87 Difference]: Start difference. First operand 185 states and 238 transitions. Second operand has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:48,872 INFO L93 Difference]: Finished difference Result 394 states and 511 transitions. [2024-11-03 04:09:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-03 04:09:48,873 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 04:09:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:48,874 INFO L225 Difference]: With dead ends: 394 [2024-11-03 04:09:48,874 INFO L226 Difference]: Without dead ends: 350 [2024-11-03 04:09:48,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=338, Invalid=1642, Unknown=0, NotChecked=0, Total=1980 [2024-11-03 04:09:48,876 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 179 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:48,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 599 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 04:09:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-03 04:09:48,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 322. [2024-11-03 04:09:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 316 states have (on average 1.3037974683544304) internal successors, (412), 316 states have internal predecessors, (412), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 420 transitions. [2024-11-03 04:09:48,893 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 420 transitions. Word has length 108 [2024-11-03 04:09:48,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:48,894 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 420 transitions. [2024-11-03 04:09:48,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:48,894 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 420 transitions. [2024-11-03 04:09:48,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:09:48,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:48,895 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:48,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:49,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:49,095 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:49,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:49,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1766957173, now seen corresponding path program 3 times [2024-11-03 04:09:49,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:49,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549503784] [2024-11-03 04:09:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:49,096 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:49,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:49,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:49,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-03 04:09:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:49,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-03 04:09:49,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 407 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 04:09:49,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:50,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:50,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 04:09:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 407 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 04:09:50,264 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549503784] [2024-11-03 04:09:50,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1549503784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:50,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:50,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2024-11-03 04:09:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490394354] [2024-11-03 04:09:50,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:50,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-03 04:09:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-03 04:09:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2024-11-03 04:09:50,266 INFO L87 Difference]: Start difference. First operand 322 states and 420 transitions. Second operand has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:51,354 INFO L93 Difference]: Finished difference Result 699 states and 916 transitions. [2024-11-03 04:09:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-03 04:09:51,355 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 04:09:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:51,357 INFO L225 Difference]: With dead ends: 699 [2024-11-03 04:09:51,357 INFO L226 Difference]: Without dead ends: 657 [2024-11-03 04:09:51,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=356, Invalid=2094, Unknown=0, NotChecked=0, Total=2450 [2024-11-03 04:09:51,358 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 190 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:51,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 922 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 04:09:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-03 04:09:51,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 618. [2024-11-03 04:09:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 612 states have (on average 1.3202614379084967) internal successors, (808), 612 states have internal predecessors, (808), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 816 transitions. [2024-11-03 04:09:51,389 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 816 transitions. Word has length 108 [2024-11-03 04:09:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:51,390 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 816 transitions. [2024-11-03 04:09:51,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 816 transitions. [2024-11-03 04:09:51,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:09:51,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:51,391 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:51,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-03 04:09:51,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:51,592 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:51,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:51,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1311006219, now seen corresponding path program 4 times [2024-11-03 04:09:51,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:51,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101377004] [2024-11-03 04:09:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:51,593 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:51,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:51,594 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:51,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-03 04:09:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:51,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-03 04:09:51,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 235 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-03 04:09:52,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:52,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:52,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2024-11-03 04:09:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 233 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-03 04:09:52,370 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:52,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101377004] [2024-11-03 04:09:52,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [101377004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:52,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:52,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2024-11-03 04:09:52,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377087596] [2024-11-03 04:09:52,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:52,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-03 04:09:52,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:52,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-03 04:09:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-11-03 04:09:52,371 INFO L87 Difference]: Start difference. First operand 618 states and 816 transitions. Second operand has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:52,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:52,783 INFO L93 Difference]: Finished difference Result 1182 states and 1566 transitions. [2024-11-03 04:09:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 04:09:52,783 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 04:09:52,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:52,787 INFO L225 Difference]: With dead ends: 1182 [2024-11-03 04:09:52,787 INFO L226 Difference]: Without dead ends: 1120 [2024-11-03 04:09:52,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-11-03 04:09:52,788 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 75 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:52,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 646 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 04:09:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2024-11-03 04:09:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1056. [2024-11-03 04:09:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1050 states have (on average 1.3323809523809524) internal successors, (1399), 1050 states have internal predecessors, (1399), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1407 transitions. [2024-11-03 04:09:52,837 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1407 transitions. Word has length 108 [2024-11-03 04:09:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:52,837 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1407 transitions. [2024-11-03 04:09:52,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.642857142857143) internal successors, (102), 28 states have internal predecessors, (102), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1407 transitions. [2024-11-03 04:09:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:09:52,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:52,839 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:52,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-03 04:09:53,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:53,040 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:53,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1712564275, now seen corresponding path program 5 times [2024-11-03 04:09:53,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:53,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606505662] [2024-11-03 04:09:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:53,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:53,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:53,042 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:53,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-03 04:09:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:53,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 04:09:53,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 101 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-03 04:09:53,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:53,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:53,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2024-11-03 04:09:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 99 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-03 04:09:53,634 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:53,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606505662] [2024-11-03 04:09:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [606505662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:53,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2024-11-03 04:09:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559493124] [2024-11-03 04:09:53,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:53,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-03 04:09:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-03 04:09:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-03 04:09:53,635 INFO L87 Difference]: Start difference. First operand 1056 states and 1407 transitions. Second operand has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:53,899 INFO L93 Difference]: Finished difference Result 1542 states and 2038 transitions. [2024-11-03 04:09:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 04:09:53,899 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 04:09:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:53,903 INFO L225 Difference]: With dead ends: 1542 [2024-11-03 04:09:53,903 INFO L226 Difference]: Without dead ends: 1372 [2024-11-03 04:09:53,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2024-11-03 04:09:53,905 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 39 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:53,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 479 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 04:09:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2024-11-03 04:09:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1280. [2024-11-03 04:09:53,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1274 states have (on average 1.3226059654631084) internal successors, (1685), 1274 states have internal predecessors, (1685), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1693 transitions. [2024-11-03 04:09:53,979 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1693 transitions. Word has length 108 [2024-11-03 04:09:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:53,980 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1693 transitions. [2024-11-03 04:09:53,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1693 transitions. [2024-11-03 04:09:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:09:53,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:53,982 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:53,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:54,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:54,183 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:54,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:54,183 INFO L85 PathProgramCache]: Analyzing trace with hash -237671689, now seen corresponding path program 6 times [2024-11-03 04:09:54,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:54,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196550101] [2024-11-03 04:09:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:54,184 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:54,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:54,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:54,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-03 04:09:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:54,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-03 04:09:54,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 255 proven. 108 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-03 04:09:54,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:55,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:55,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 67 [2024-11-03 04:09:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 279 proven. 84 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-03 04:09:55,269 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:55,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196550101] [2024-11-03 04:09:55,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [196550101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:55,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:55,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-11-03 04:09:55,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140674632] [2024-11-03 04:09:55,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:55,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-03 04:09:55,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-03 04:09:55,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-11-03 04:09:55,271 INFO L87 Difference]: Start difference. First operand 1280 states and 1693 transitions. Second operand has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:57,746 INFO L93 Difference]: Finished difference Result 3026 states and 3983 transitions. [2024-11-03 04:09:57,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-03 04:09:57,746 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 04:09:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:57,752 INFO L225 Difference]: With dead ends: 3026 [2024-11-03 04:09:57,753 INFO L226 Difference]: Without dead ends: 2374 [2024-11-03 04:09:57,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=710, Invalid=4260, Unknown=0, NotChecked=0, Total=4970 [2024-11-03 04:09:57,755 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 136 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:57,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 597 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 04:09:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2024-11-03 04:09:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2128. [2024-11-03 04:09:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2122 states have (on average 1.3176248821866163) internal successors, (2796), 2122 states have internal predecessors, (2796), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2804 transitions. [2024-11-03 04:09:57,949 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2804 transitions. Word has length 108 [2024-11-03 04:09:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:57,950 INFO L471 AbstractCegarLoop]: Abstraction has 2128 states and 2804 transitions. [2024-11-03 04:09:57,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2804 transitions. [2024-11-03 04:09:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:09:57,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:57,953 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:57,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-03 04:09:58,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:58,153 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:58,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:58,154 INFO L85 PathProgramCache]: Analyzing trace with hash -632038475, now seen corresponding path program 7 times [2024-11-03 04:09:58,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:58,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157966977] [2024-11-03 04:09:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:58,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:58,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:58,156 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:58,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-03 04:09:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:58,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-03 04:09:58,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 223 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-03 04:09:58,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:59,556 INFO L349 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2024-11-03 04:09:59,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 45 [2024-11-03 04:09:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 188 proven. 219 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-03 04:09:59,884 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:59,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157966977] [2024-11-03 04:09:59,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [157966977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:59,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2024-11-03 04:09:59,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415012271] [2024-11-03 04:09:59,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:59,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-03 04:09:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-03 04:09:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-11-03 04:09:59,886 INFO L87 Difference]: Start difference. First operand 2128 states and 2804 transitions. Second operand has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:10:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:10:04,589 INFO L93 Difference]: Finished difference Result 2903 states and 3810 transitions. [2024-11-03 04:10:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-03 04:10:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2024-11-03 04:10:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:10:04,597 INFO L225 Difference]: With dead ends: 2903 [2024-11-03 04:10:04,597 INFO L226 Difference]: Without dead ends: 2706 [2024-11-03 04:10:04,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1401, Invalid=8901, Unknown=0, NotChecked=0, Total=10302 [2024-11-03 04:10:04,600 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 198 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-03 04:10:04,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 918 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-03 04:10:04,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2024-11-03 04:10:04,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2437. [2024-11-03 04:10:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2431 states have (on average 1.3167420814479638) internal successors, (3201), 2431 states have internal predecessors, (3201), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:10:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3209 transitions. [2024-11-03 04:10:04,896 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3209 transitions. Word has length 108 [2024-11-03 04:10:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:10:04,896 INFO L471 AbstractCegarLoop]: Abstraction has 2437 states and 3209 transitions. [2024-11-03 04:10:04,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:10:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3209 transitions. [2024-11-03 04:10:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 04:10:04,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:10:04,899 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:10:04,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-03 04:10:05,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:10:05,100 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:10:05,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:10:05,101 INFO L85 PathProgramCache]: Analyzing trace with hash -609406221, now seen corresponding path program 8 times [2024-11-03 04:10:05,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:10:05,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072062811] [2024-11-03 04:10:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:10:05,101 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:10:05,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:10:05,103 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:10:05,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-03 04:10:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 04:10:05,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 04:10:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 04:10:05,645 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 04:10:05,646 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 04:10:05,647 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 04:10:05,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-03 04:10:05,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:10:05,850 INFO L407 BasicCegarLoop]: Path program histogram: [8, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:10:05,900 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 04:10:05,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:10:05 BoogieIcfgContainer [2024-11-03 04:10:05,902 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 04:10:05,902 INFO L158 Benchmark]: Toolchain (without parser) took 26728.36ms. Allocated memory was 201.3MB in the beginning and 395.3MB in the end (delta: 194.0MB). Free memory was 143.2MB in the beginning and 240.5MB in the end (delta: -97.3MB). Peak memory consumption was 97.3MB. Max. memory is 8.0GB. [2024-11-03 04:10:05,903 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 201.3MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 04:10:05,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.38ms. Allocated memory is still 201.3MB. Free memory was 142.8MB in the beginning and 129.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-11-03 04:10:05,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.88ms. Allocated memory is still 201.3MB. Free memory was 129.3MB in the beginning and 127.6MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-11-03 04:10:05,903 INFO L158 Benchmark]: Boogie Preprocessor took 40.25ms. Allocated memory is still 201.3MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 04:10:05,903 INFO L158 Benchmark]: RCFGBuilder took 321.03ms. Allocated memory was 201.3MB in the beginning and 273.7MB in the end (delta: 72.4MB). Free memory was 125.1MB in the beginning and 241.5MB in the end (delta: -116.4MB). Peak memory consumption was 20.8MB. Max. memory is 8.0GB. [2024-11-03 04:10:05,903 INFO L158 Benchmark]: TraceAbstraction took 26128.42ms. Allocated memory was 273.7MB in the beginning and 395.3MB in the end (delta: 121.6MB). Free memory was 241.0MB in the beginning and 240.5MB in the end (delta: 496.0kB). Peak memory consumption was 122.7MB. Max. memory is 8.0GB. [2024-11-03 04:10:05,904 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 201.3MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.38ms. Allocated memory is still 201.3MB. Free memory was 142.8MB in the beginning and 129.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.88ms. Allocated memory is still 201.3MB. Free memory was 129.3MB in the beginning and 127.6MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.25ms. Allocated memory is still 201.3MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 321.03ms. Allocated memory was 201.3MB in the beginning and 273.7MB in the end (delta: 72.4MB). Free memory was 125.1MB in the beginning and 241.5MB in the end (delta: -116.4MB). Peak memory consumption was 20.8MB. Max. memory is 8.0GB. * TraceAbstraction took 26128.42ms. Allocated memory was 273.7MB in the beginning and 395.3MB in the end (delta: 121.6MB). Free memory was 241.0MB in the beginning and 240.5MB in the end (delta: 496.0kB). Peak memory consumption was 122.7MB. 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 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L56] int x, y, z, w; [L57] x = __VERIFIER_nondet_int() [L58] y = __VERIFIER_nondet_int() [L59] z = __VERIFIER_nondet_int() [L60] w = __VERIFIER_nondet_int() [L61] CALL, EXPR solve(x, y, z, w) [L44] CALL, EXPR check_domain(s0) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=2, \result=1] [L44] RET, EXPR check_domain(s0) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] CALL, EXPR check_domain(s1) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=0, \result=1] [L44] RET, EXPR check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) && check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44] CALL, EXPR check_domain(s2) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=2, \result=1] [L44] RET, EXPR check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) && check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L45] CALL, EXPR check_domain(s3) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=0, \result=1] [L45] RET, EXPR check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] COND TRUE check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) [L46-L47] s0 + s1 + s2 + s3 == 4 && s0 * 0 + s1 * 1 + s2 * 2 + s3 * 3 == 4 && check_sum(s0, s1, s2, s3) VAL [s0=2, s1=0, s2=2, s3=0] [L46-L47] s0 + s1 + s2 + s3 == 4 && s0 * 0 + s1 * 1 + s2 * 2 + s3 * 3 == 4 && check_sum(s0, s1, s2, s3) [L47] CALL, EXPR check_sum(s0, s1, s2, s3) [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L34] int i = 0; VAL [i=0, s={5:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=0, j=0, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=0, j=1, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=0, j=1, s={5:0}, sum=1] [L36] j++ VAL [i=0, j=2, s={5:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=0, j=3, s={5:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=0, j=3, s={5:0}, sum=2] [L36] j++ VAL [i=0, j=4, s={5:0}, sum=2] [L36] COND FALSE !(j < 4) VAL [i=0, s={5:0}, sum=2] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=1, s={5:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=1, j=0, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=1, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=2, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=3, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=4, s={5:0}, sum=0] [L36] COND FALSE !(j < 4) VAL [i=1, s={5:0}, sum=0] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=2, s={5:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=2, j=0, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=2, j=0, s={5:0}, sum=1] [L36] j++ VAL [i=2, j=1, s={5:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=2, j=2, s={5:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=2, j=2, s={5:0}, sum=2] [L36] j++ VAL [i=2, j=3, s={5:0}, sum=2] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=2, j=4, s={5:0}, sum=2] [L36] COND FALSE !(j < 4) VAL [i=2, s={5:0}, sum=2] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=3, s={5:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=3, j=0, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=1, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=2, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=3, s={5:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=4, s={5:0}, sum=0] [L36] COND FALSE !(j < 4) VAL [i=3, s={5:0}, sum=0] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=4, s={5:0}] [L34] COND FALSE !(i < 4) VAL [s={5:0}] [L40] return 1; [L33] int s[4] = {s0, s1, s2, s3}; [L40] return 1; VAL [\result=1] [L47] RET, EXPR check_sum(s0, s1, s2, s3) [L46-L47] s0 + s1 + s2 + s3 == 4 && s0 * 0 + s1 * 1 + s2 * 2 + s3 * 3 == 4 && check_sum(s0, s1, s2, s3) [L46-L47] COND TRUE s0 + s1 + s2 + s3 == 4 && s0 * 0 + s1 * 1 + s2 * 2 + s3 * 3 == 4 && check_sum(s0, s1, s2, s3) [L48] return 1; VAL [\result=1] [L61] RET, EXPR solve(x, y, z, w) [L61] CALL __VERIFIER_assert(!solve(x, y, z, w)) [L18] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.0s, OverallIterations: 18, TraceHistogramMax: 16, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1127 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1127 mSDsluCounter, 6457 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5712 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7448 IncrementalHoareTripleChecker+Invalid, 7494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 745 mSDtfsCounter, 7448 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2577 GetRequests, 2165 SyntacticMatches, 0 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6910 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2437occurred in iteration=17, InterpolantAutomatonStates: 329, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 17 MinimizatonAttempts, 785 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 1330 NumberOfCodeBlocks, 1330 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2410 ConstructedInterpolants, 0 QuantifiedInterpolants, 12295 SizeOfPredicates, 60 NumberOfNonLiveVariables, 2521 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 34 InterpolantComputations, 14 PerfectInterpolantSequences, 5354/8294 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-03 04:10:05,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...