/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 07:29:55,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 07:29:55,255 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 07:29:55,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 07:29:55,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 07:29:55,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 07:29:55,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 07:29:55,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 07:29:55,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 07:29:55,293 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 07:29:55,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 07:29:55,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 07:29:55,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 07:29:55,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 07:29:55,294 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 07:29:55,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 07:29:55,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 07:29:55,295 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 07:29:55,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 07:29:55,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 07:29:55,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 07:29:55,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 07:29:55,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 07:29:55,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 07:29:55,299 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 07:29:55,299 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 07:29:55,299 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 07:29:55,300 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 07:29:55,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 07:29:55,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 07:29:55,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 07:29:55,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 07:29:55,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 07:29:55,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 07:29:55,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 07:29:55,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 07:29:55,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 07:29:55,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 07:29:55,303 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 07:29:55,303 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 07:29:55,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 07:29:55,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 07:29:55,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 07:29:55,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 07:29:55,305 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 07:29:55,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 07:29:55,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 07:29:55,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 07:29:55,566 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 07:29:55,566 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 07:29:55,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c [2024-11-03 07:29:56,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 07:29:57,110 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 07:29:57,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c [2024-11-03 07:29:57,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b01359a52/4c983f9d6b12487597e7ed601495c024/FLAG650db324c [2024-11-03 07:29:57,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b01359a52/4c983f9d6b12487597e7ed601495c024 [2024-11-03 07:29:57,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 07:29:57,534 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 07:29:57,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 07:29:57,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 07:29:57,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 07:29:57,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a56c18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57, skipping insertion in model container [2024-11-03 07:29:57,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,565 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 07:29:57,731 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-magicseries1.c[613,626] [2024-11-03 07:29:57,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 07:29:57,760 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 07:29:57,771 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-magicseries1.c[613,626] [2024-11-03 07:29:57,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 07:29:57,794 INFO L204 MainTranslator]: Completed translation [2024-11-03 07:29:57,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57 WrapperNode [2024-11-03 07:29:57,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 07:29:57,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 07:29:57,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 07:29:57,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 07:29:57,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,834 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-11-03 07:29:57,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 07:29:57,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 07:29:57,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 07:29:57,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 07:29:57,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,861 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 07:29:57,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 07:29:57,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 07:29:57,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 07:29:57,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 07:29:57,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (1/1) ... [2024-11-03 07:29:57,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 07:29:57,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 07:29:57,917 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 07:29:57,930 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 07:29:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 07:29:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 07:29:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 07:29:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 07:29:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 07:29:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 07:29:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 07:29:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 07:29:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-03 07:29:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-03 07:29:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 07:29:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 07:29:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 07:29:58,064 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 07:29:58,066 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 07:29:58,325 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-03 07:29:58,325 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 07:29:58,339 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 07:29:58,340 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 07:29:58,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:29:58 BoogieIcfgContainer [2024-11-03 07:29:58,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 07:29:58,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 07:29:58,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 07:29:58,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 07:29:58,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 07:29:57" (1/3) ... [2024-11-03 07:29:58,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f77daf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:29:58, skipping insertion in model container [2024-11-03 07:29:58,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 07:29:57" (2/3) ... [2024-11-03 07:29:58,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f77daf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 07:29:58, skipping insertion in model container [2024-11-03 07:29:58,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 07:29:58" (3/3) ... [2024-11-03 07:29:58,350 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries1.c [2024-11-03 07:29:58,365 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 07:29:58,365 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 07:29:58,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 07:29:58,421 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;@5b0647c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 07:29:58,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 07:29:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 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 07:29:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 07:29:58,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:29:58,433 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 07:29:58,433 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:29:58,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:29:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash -173200605, now seen corresponding path program 1 times [2024-11-03 07:29:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:29:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193922435] [2024-11-03 07:29:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:29:58,445 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:29:58,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:29:58,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:29:58,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 07:29:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:29:58,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 07:29:58,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:29:58,654 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 07:29:58,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:29:58,723 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 07:29:58,724 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:29:58,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193922435] [2024-11-03 07:29:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1193922435] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:29:58,725 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:29:58,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 07:29:58,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669517373] [2024-11-03 07:29:58,727 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:29:58,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 07:29:58,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:29:58,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 07:29:58,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 07:29:58,753 INFO L87 Difference]: Start difference. First operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 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) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 07:29:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:29:58,803 INFO L93 Difference]: Finished difference Result 60 states and 86 transitions. [2024-11-03 07:29:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 07:29:58,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-03 07:29:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:29:58,813 INFO L225 Difference]: With dead ends: 60 [2024-11-03 07:29:58,813 INFO L226 Difference]: Without dead ends: 36 [2024-11-03 07:29:58,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-03 07:29:58,818 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:29:58,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:29:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-03 07:29:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-03 07:29:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 07:29:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2024-11-03 07:29:58,852 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 17 [2024-11-03 07:29:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:29:58,853 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2024-11-03 07:29:58,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 07:29:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2024-11-03 07:29:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-03 07:29:58,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:29:58,855 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:29:58,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 07:29:59,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:29:59,059 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:29:59,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:29:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1450759377, now seen corresponding path program 1 times [2024-11-03 07:29:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:29:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912308807] [2024-11-03 07:29:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:29:59,061 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:29:59,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:29:59,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:29:59,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 07:29:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:29:59,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 07:29:59,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:29:59,167 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 07:29:59,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:29:59,180 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 07:29:59,181 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:29:59,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912308807] [2024-11-03 07:29:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1912308807] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:29:59,181 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:29:59,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 07:29:59,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001954394] [2024-11-03 07:29:59,182 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:29:59,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 07:29:59,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:29:59,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 07:29:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 07:29:59,188 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 07:29:59,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:29:59,213 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-11-03 07:29:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 07:29:59,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 21 [2024-11-03 07:29:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:29:59,216 INFO L225 Difference]: With dead ends: 49 [2024-11-03 07:29:59,216 INFO L226 Difference]: Without dead ends: 34 [2024-11-03 07:29:59,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 07:29:59,219 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 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 07:29:59,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:29:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-03 07:29:59,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-03 07:29:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 28 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 07:29:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-11-03 07:29:59,229 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 21 [2024-11-03 07:29:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:29:59,231 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-11-03 07:29:59,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 07:29:59,231 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-11-03 07:29:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 07:29:59,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:29:59,232 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 07:29:59,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 07:29:59,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:29:59,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:29:59,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:29:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 361428979, now seen corresponding path program 1 times [2024-11-03 07:29:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:29:59,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410912673] [2024-11-03 07:29:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:29:59,435 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:29:59,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:29:59,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:29:59,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 07:29:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:29:59,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 07:29:59,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:29:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 07:29:59,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:29:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 07:29:59,560 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:29:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410912673] [2024-11-03 07:29:59,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1410912673] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:29:59,561 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:29:59,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 07:29:59,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017908525] [2024-11-03 07:29:59,561 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:29:59,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 07:29:59,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:29:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 07:29:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 07:29:59,563 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 07:29:59,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:29:59,588 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2024-11-03 07:29:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 07:29:59,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-11-03 07:29:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:29:59,590 INFO L225 Difference]: With dead ends: 57 [2024-11-03 07:29:59,590 INFO L226 Difference]: Without dead ends: 34 [2024-11-03 07:29:59,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 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 07:29:59,592 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:29:59,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:29:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-03 07:29:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-03 07:29:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 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 07:29:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-03 07:29:59,597 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 27 [2024-11-03 07:29:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:29:59,597 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-03 07:29:59,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 07:29:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-03 07:29:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-03 07:29:59,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:29:59,599 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-03 07:29:59,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 07:29:59,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:29:59,801 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:29:59,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:29:59,802 INFO L85 PathProgramCache]: Analyzing trace with hash 696498802, now seen corresponding path program 1 times [2024-11-03 07:29:59,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:29:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371493659] [2024-11-03 07:29:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:29:59,803 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:29:59,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:29:59,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:29:59,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 07:29:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:29:59,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 07:29:59,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:29:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 07:29:59,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:29:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 07:29:59,921 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:29:59,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371493659] [2024-11-03 07:29:59,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1371493659] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:29:59,922 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:29:59,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 07:29:59,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676277397] [2024-11-03 07:29:59,922 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:29:59,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 07:29:59,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:29:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 07:29:59,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 07:29:59,927 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 07:29:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:29:59,964 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2024-11-03 07:29:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 07:29:59,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-11-03 07:29:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:29:59,965 INFO L225 Difference]: With dead ends: 61 [2024-11-03 07:29:59,965 INFO L226 Difference]: Without dead ends: 34 [2024-11-03 07:29:59,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 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 07:29:59,968 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:29:59,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:29:59,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-03 07:29:59,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-03 07:29:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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 07:29:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-03 07:29:59,979 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 33 [2024-11-03 07:29:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:29:59,979 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-03 07:29:59,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 07:29:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-03 07:29:59,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-03 07:29:59,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:29:59,980 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] [2024-11-03 07:29:59,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-03 07:30:00,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:00,183 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:00,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1645112148, now seen corresponding path program 1 times [2024-11-03 07:30:00,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:00,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337190128] [2024-11-03 07:30:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:00,184 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:00,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:00,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:00,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 07:30:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:00,268 WARN L253 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-03 07:30:00,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:00,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-03 07:30:00,384 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 07:30:00,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:00,504 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 07:30:00,504 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:00,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337190128] [2024-11-03 07:30:00,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [337190128] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:00,505 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:00,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2024-11-03 07:30:00,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160597877] [2024-11-03 07:30:00,505 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:00,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 07:30:00,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:00,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 07:30:00,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 07:30:00,508 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 07:30:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:00,555 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2024-11-03 07:30:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 07:30:00,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 39 [2024-11-03 07:30:00,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:00,560 INFO L225 Difference]: With dead ends: 53 [2024-11-03 07:30:00,560 INFO L226 Difference]: Without dead ends: 46 [2024-11-03 07:30:00,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 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 07:30:00,562 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:00,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 129 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-03 07:30:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2024-11-03 07:30:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 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 07:30:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-03 07:30:00,573 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-03 07:30:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:00,573 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-03 07:30:00,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 07:30:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-03 07:30:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 07:30:00,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:00,574 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] [2024-11-03 07:30:00,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 07:30:00,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:00,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:00,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1930899933, now seen corresponding path program 1 times [2024-11-03 07:30:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624049907] [2024-11-03 07:30:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:00,777 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:00,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:00,778 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:00,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 07:30:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:00,855 WARN L253 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-03 07:30:00,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:00,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-03 07:30:00,955 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 07:30:00,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:01,067 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 07:30:01,068 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:01,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624049907] [2024-11-03 07:30:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1624049907] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 07:30:01,068 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 07:30:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 3] imperfect sequences [] total 6 [2024-11-03 07:30:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492635119] [2024-11-03 07:30:01,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:01,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 07:30:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 07:30:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 07:30:01,070 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 07:30:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:01,139 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2024-11-03 07:30:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 07:30:01,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 41 [2024-11-03 07:30:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:01,140 INFO L225 Difference]: With dead ends: 67 [2024-11-03 07:30:01,140 INFO L226 Difference]: Without dead ends: 49 [2024-11-03 07:30:01,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-03 07:30:01,143 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:01,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 126 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-03 07:30:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-11-03 07:30:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 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 07:30:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-11-03 07:30:01,156 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 41 [2024-11-03 07:30:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:01,157 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-11-03 07:30:01,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 07:30:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-11-03 07:30:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-03 07:30:01,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:01,159 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1] [2024-11-03 07:30:01,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 07:30:01,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:01,362 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:01,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1729819971, now seen corresponding path program 1 times [2024-11-03 07:30:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:01,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325457637] [2024-11-03 07:30:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:01,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:01,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:01,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:01,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 07:30:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:01,458 WARN L253 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-03 07:30:01,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:02,493 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:30:02,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 73 [2024-11-03 07:30:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:03,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:03,719 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325457637] [2024-11-03 07:30:03,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1325457637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:03,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:03,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2024-11-03 07:30:03,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258411576] [2024-11-03 07:30:03,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:03,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 07:30:03,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 07:30:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-03 07:30:03,722 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:05,232 INFO L93 Difference]: Finished difference Result 98 states and 128 transitions. [2024-11-03 07:30:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-03 07:30:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2024-11-03 07:30:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:05,234 INFO L225 Difference]: With dead ends: 98 [2024-11-03 07:30:05,235 INFO L226 Difference]: Without dead ends: 79 [2024-11-03 07:30:05,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2024-11-03 07:30:05,237 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 147 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:05,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 246 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 07:30:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-03 07:30:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2024-11-03 07:30:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 59 states have internal predecessors, (74), 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 07:30:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2024-11-03 07:30:05,260 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 47 [2024-11-03 07:30:05,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:05,260 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2024-11-03 07:30:05,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2024-11-03 07:30:05,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 07:30:05,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:05,262 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1] [2024-11-03 07:30:05,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 07:30:05,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:05,464 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:05,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1558333838, now seen corresponding path program 1 times [2024-11-03 07:30:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231243901] [2024-11-03 07:30:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:05,465 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:05,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:05,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:05,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 07:30:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:05,556 WARN L253 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-03 07:30:05,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:05,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-03 07:30:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:05,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:05,883 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:05,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231243901] [2024-11-03 07:30:05,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1231243901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:05,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:05,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2024-11-03 07:30:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698001178] [2024-11-03 07:30:05,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:05,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 07:30:05,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:05,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 07:30:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-03 07:30:05,886 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 07:30:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:06,180 INFO L93 Difference]: Finished difference Result 104 states and 135 transitions. [2024-11-03 07:30:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 07:30:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 50 [2024-11-03 07:30:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:06,182 INFO L225 Difference]: With dead ends: 104 [2024-11-03 07:30:06,182 INFO L226 Difference]: Without dead ends: 79 [2024-11-03 07:30:06,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-03 07:30:06,183 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 57 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:06,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 247 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 07:30:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-03 07:30:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 62. [2024-11-03 07:30:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 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 07:30:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2024-11-03 07:30:06,204 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 50 [2024-11-03 07:30:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:06,204 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2024-11-03 07:30:06,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-03 07:30:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2024-11-03 07:30:06,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-03 07:30:06,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:06,206 INFO L215 NwaCegarLoop]: trace histogram [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 07:30:06,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-03 07:30:06,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:06,408 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:06,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash 60507235, now seen corresponding path program 2 times [2024-11-03 07:30:06,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:06,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672278968] [2024-11-03 07:30:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:06,409 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:06,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:06,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:06,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-03 07:30:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:06,508 WARN L253 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-03 07:30:06,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:07,138 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:30:07,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 73 [2024-11-03 07:30:08,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-03 07:30:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:08,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-03 07:30:08,535 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:08,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672278968] [2024-11-03 07:30:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1672278968] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 07:30:08,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 07:30:08,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [20] total 21 [2024-11-03 07:30:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183964127] [2024-11-03 07:30:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 07:30:08,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 07:30:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 07:30:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-03 07:30:08,537 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 07:30:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:08,555 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2024-11-03 07:30:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 07:30:08,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 53 [2024-11-03 07:30:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:08,557 INFO L225 Difference]: With dead ends: 68 [2024-11-03 07:30:08,557 INFO L226 Difference]: Without dead ends: 62 [2024-11-03 07:30:08,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-03 07:30:08,558 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:08,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 07:30:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-03 07:30:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-03 07:30:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 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 07:30:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-11-03 07:30:08,578 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 53 [2024-11-03 07:30:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:08,578 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-11-03 07:30:08,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 07:30:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-11-03 07:30:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 07:30:08,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:08,581 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] [2024-11-03 07:30:08,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-03 07:30:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:08,782 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:08,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1455445076, now seen corresponding path program 1 times [2024-11-03 07:30:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094073320] [2024-11-03 07:30:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:08,783 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:08,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:08,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:08,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-03 07:30:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:08,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-03 07:30:08,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:09,459 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:30:09,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 34 [2024-11-03 07:30:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-03 07:30:10,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-03 07:30:11,052 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:11,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094073320] [2024-11-03 07:30:11,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1094073320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:11,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:11,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2024-11-03 07:30:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179121754] [2024-11-03 07:30:11,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:11,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-03 07:30:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-03 07:30:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 07:30:11,055 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:20,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:20,339 INFO L93 Difference]: Finished difference Result 176 states and 226 transitions. [2024-11-03 07:30:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-03 07:30:20,340 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-03 07:30:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:20,343 INFO L225 Difference]: With dead ends: 176 [2024-11-03 07:30:20,343 INFO L226 Difference]: Without dead ends: 142 [2024-11-03 07:30:20,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1818 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1270, Invalid=4891, Unknown=1, NotChecked=0, Total=6162 [2024-11-03 07:30:20,347 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 197 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:20,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 471 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 07:30:20,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-03 07:30:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 106. [2024-11-03 07:30:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 100 states have (on average 1.27) internal successors, (127), 100 states have internal predecessors, (127), 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 07:30:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 135 transitions. [2024-11-03 07:30:20,386 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 135 transitions. Word has length 73 [2024-11-03 07:30:20,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:20,386 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 135 transitions. [2024-11-03 07:30:20,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:20,386 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 135 transitions. [2024-11-03 07:30:20,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 07:30:20,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:20,389 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 4, 4, 4, 2, 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] [2024-11-03 07:30:20,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-03 07:30:20,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:20,590 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:20,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:20,590 INFO L85 PathProgramCache]: Analyzing trace with hash 407349040, now seen corresponding path program 1 times [2024-11-03 07:30:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920119453] [2024-11-03 07:30:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:20,591 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:20,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:20,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-03 07:30:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:20,678 WARN L253 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-03 07:30:20,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:21,167 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:30:21,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 34 [2024-11-03 07:30:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 60 proven. 32 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-03 07:30:21,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 66 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-03 07:30:22,965 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:22,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920119453] [2024-11-03 07:30:22,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [920119453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:22,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:22,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 37 [2024-11-03 07:30:22,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610088450] [2024-11-03 07:30:22,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:22,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-03 07:30:22,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-03 07:30:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2024-11-03 07:30:22,967 INFO L87 Difference]: Start difference. First operand 106 states and 135 transitions. Second operand has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:34,179 INFO L93 Difference]: Finished difference Result 321 states and 421 transitions. [2024-11-03 07:30:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-03 07:30:34,179 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-03 07:30:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:34,180 INFO L225 Difference]: With dead ends: 321 [2024-11-03 07:30:34,180 INFO L226 Difference]: Without dead ends: 285 [2024-11-03 07:30:34,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6503 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2811, Invalid=15011, Unknown=0, NotChecked=0, Total=17822 [2024-11-03 07:30:34,184 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 555 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:34,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 450 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-03 07:30:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-03 07:30:34,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 201. [2024-11-03 07:30:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.317948717948718) internal successors, (257), 195 states have internal predecessors, (257), 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 07:30:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 265 transitions. [2024-11-03 07:30:34,227 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 265 transitions. Word has length 73 [2024-11-03 07:30:34,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:34,227 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 265 transitions. [2024-11-03 07:30:34,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 265 transitions. [2024-11-03 07:30:34,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 07:30:34,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:34,228 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 4, 4, 4, 3, 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] [2024-11-03 07:30:34,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-03 07:30:34,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:34,429 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:34,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash -475933970, now seen corresponding path program 2 times [2024-11-03 07:30:34,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:34,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661766085] [2024-11-03 07:30:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:34,430 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:34,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:34,433 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:34,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-03 07:30:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:34,517 WARN L253 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-03 07:30:34,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:35,029 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:30:35,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 34 [2024-11-03 07:30:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-03 07:30:36,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 62 proven. 43 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-03 07:30:37,107 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:37,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661766085] [2024-11-03 07:30:37,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [661766085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:37,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:37,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 40 [2024-11-03 07:30:37,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696840094] [2024-11-03 07:30:37,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:37,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-03 07:30:37,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-03 07:30:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1249, Unknown=0, NotChecked=0, Total=1560 [2024-11-03 07:30:37,113 INFO L87 Difference]: Start difference. First operand 201 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:43,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:43,625 INFO L93 Difference]: Finished difference Result 430 states and 568 transitions. [2024-11-03 07:30:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-03 07:30:43,626 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-03 07:30:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:43,627 INFO L225 Difference]: With dead ends: 430 [2024-11-03 07:30:43,628 INFO L226 Difference]: Without dead ends: 360 [2024-11-03 07:30:43,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3964 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2069, Invalid=10141, Unknown=0, NotChecked=0, Total=12210 [2024-11-03 07:30:43,631 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 321 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:43,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 512 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-03 07:30:43,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-03 07:30:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 283. [2024-11-03 07:30:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 277 states have (on average 1.3249097472924187) internal successors, (367), 277 states have internal predecessors, (367), 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 07:30:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 375 transitions. [2024-11-03 07:30:43,688 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 375 transitions. Word has length 73 [2024-11-03 07:30:43,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:43,688 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 375 transitions. [2024-11-03 07:30:43,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 375 transitions. [2024-11-03 07:30:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 07:30:43,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:43,690 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 4, 4, 4, 3, 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] [2024-11-03 07:30:43,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-03 07:30:43,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:43,890 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:43,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:43,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2083808338, now seen corresponding path program 3 times [2024-11-03 07:30:43,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:43,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438002027] [2024-11-03 07:30:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:43,891 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:43,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:43,892 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:43,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-03 07:30:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:43,979 WARN L253 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-03 07:30:43,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:44,471 INFO L349 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2024-11-03 07:30:44,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 73 [2024-11-03 07:30:46,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-03 07:30:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:30:46,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 84 refuted. 1 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-03 07:30:51,734 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:51,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438002027] [2024-11-03 07:30:51,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [438002027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:51,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:51,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 40 [2024-11-03 07:30:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458148079] [2024-11-03 07:30:51,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:51,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-03 07:30:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-03 07:30:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1139, Unknown=1, NotChecked=0, Total=1560 [2024-11-03 07:30:51,736 INFO L87 Difference]: Start difference. First operand 283 states and 375 transitions. Second operand has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:30:55,382 INFO L93 Difference]: Finished difference Result 514 states and 672 transitions. [2024-11-03 07:30:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-03 07:30:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-03 07:30:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:30:55,385 INFO L225 Difference]: With dead ends: 514 [2024-11-03 07:30:55,385 INFO L226 Difference]: Without dead ends: 428 [2024-11-03 07:30:55,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1021, Invalid=4380, Unknown=1, NotChecked=0, Total=5402 [2024-11-03 07:30:55,388 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 237 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-03 07:30:55,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 543 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-03 07:30:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-03 07:30:55,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 406. [2024-11-03 07:30:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 400 states have (on average 1.3) internal successors, (520), 400 states have internal predecessors, (520), 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 07:30:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 528 transitions. [2024-11-03 07:30:55,481 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 528 transitions. Word has length 73 [2024-11-03 07:30:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:30:55,482 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 528 transitions. [2024-11-03 07:30:55,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.425) internal successors, (97), 40 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:30:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 528 transitions. [2024-11-03 07:30:55,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 07:30:55,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:30:55,483 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 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] [2024-11-03 07:30:55,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-03 07:30:55,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:55,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:30:55,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:30:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1537305488, now seen corresponding path program 4 times [2024-11-03 07:30:55,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:30:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599602992] [2024-11-03 07:30:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:30:55,686 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:30:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:30:55,688 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:30:55,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-03 07:30:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:30:55,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-03 07:30:55,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:30:56,262 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:30:56,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 34 [2024-11-03 07:30:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 237 proven. 153 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-03 07:30:57,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:30:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 254 proven. 114 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-03 07:30:58,760 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:30:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599602992] [2024-11-03 07:30:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1599602992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:30:58,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:30:58,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19] total 44 [2024-11-03 07:30:58,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495128362] [2024-11-03 07:30:58,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:30:58,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-03 07:30:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:30:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-03 07:30:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=1484, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 07:30:58,762 INFO L87 Difference]: Start difference. First operand 406 states and 528 transitions. Second operand has 44 states, 44 states have (on average 2.659090909090909) internal successors, (117), 44 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:31:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:31:08,124 INFO L93 Difference]: Finished difference Result 1081 states and 1378 transitions. [2024-11-03 07:31:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-03 07:31:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.659090909090909) internal successors, (117), 44 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-03 07:31:08,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:31:08,127 INFO L225 Difference]: With dead ends: 1081 [2024-11-03 07:31:08,128 INFO L226 Difference]: Without dead ends: 869 [2024-11-03 07:31:08,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6766 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=3406, Invalid=15226, Unknown=0, NotChecked=0, Total=18632 [2024-11-03 07:31:08,133 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 376 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-03 07:31:08,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 538 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-03 07:31:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-03 07:31:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 770. [2024-11-03 07:31:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 764 states have (on average 1.263089005235602) internal successors, (965), 764 states have internal predecessors, (965), 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 07:31:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 973 transitions. [2024-11-03 07:31:08,319 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 973 transitions. Word has length 107 [2024-11-03 07:31:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:31:08,319 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 973 transitions. [2024-11-03 07:31:08,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.659090909090909) internal successors, (117), 44 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:31:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 973 transitions. [2024-11-03 07:31:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 07:31:08,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:31:08,321 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] [2024-11-03 07:31:08,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-03 07:31:08,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:08,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:31:08,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:31:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash 696983534, now seen corresponding path program 5 times [2024-11-03 07:31:08,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:31:08,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501983700] [2024-11-03 07:31:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:31:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:31:08,524 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:31:08,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-03 07:31:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:31:08,619 WARN L253 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-03 07:31:08,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:31:09,070 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:31:09,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 34 [2024-11-03 07:31:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 47 proven. 411 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:31:11,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:31:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 74 proven. 340 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 07:31:12,588 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:31:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501983700] [2024-11-03 07:31:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1501983700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:31:12,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:31:12,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22] total 55 [2024-11-03 07:31:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997761750] [2024-11-03 07:31:12,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:31:12,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-03 07:31:12,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:31:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-03 07:31:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=2423, Unknown=0, NotChecked=0, Total=2970 [2024-11-03 07:31:12,590 INFO L87 Difference]: Start difference. First operand 770 states and 973 transitions. Second operand has 55 states, 55 states have (on average 2.727272727272727) internal successors, (150), 55 states have internal predecessors, (150), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:31:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 07:31:26,733 INFO L93 Difference]: Finished difference Result 2113 states and 2670 transitions. [2024-11-03 07:31:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-03 07:31:26,733 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.727272727272727) internal successors, (150), 55 states have internal predecessors, (150), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-03 07:31:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 07:31:26,739 INFO L225 Difference]: With dead ends: 2113 [2024-11-03 07:31:26,739 INFO L226 Difference]: Without dead ends: 1858 [2024-11-03 07:31:26,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12806 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=4943, Invalid=30213, Unknown=0, NotChecked=0, Total=35156 [2024-11-03 07:31:26,742 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 475 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-03 07:31:26,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 633 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-03 07:31:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2024-11-03 07:31:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1680. [2024-11-03 07:31:27,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1674 states have (on average 1.2461170848267622) internal successors, (2086), 1674 states have internal predecessors, (2086), 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 07:31:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2094 transitions. [2024-11-03 07:31:27,137 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2094 transitions. Word has length 107 [2024-11-03 07:31:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 07:31:27,137 INFO L471 AbstractCegarLoop]: Abstraction has 1680 states and 2094 transitions. [2024-11-03 07:31:27,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.727272727272727) internal successors, (150), 55 states have internal predecessors, (150), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 07:31:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2094 transitions. [2024-11-03 07:31:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 07:31:27,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 07:31:27,140 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] [2024-11-03 07:31:27,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-03 07:31:27,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:27,341 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 07:31:27,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 07:31:27,341 INFO L85 PathProgramCache]: Analyzing trace with hash 110177520, now seen corresponding path program 6 times [2024-11-03 07:31:27,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 07:31:27,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643185660] [2024-11-03 07:31:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 07:31:27,341 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 07:31:27,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 07:31:27,342 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 07:31:27,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-03 07:31:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 07:31:27,439 WARN L253 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-03 07:31:27,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 07:31:27,887 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-03 07:31:27,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 34 [2024-11-03 07:31:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 451 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 07:31:30,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 07:31:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 19 proven. 380 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-03 07:31:31,553 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 07:31:31,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643185660] [2024-11-03 07:31:31,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1643185660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 07:31:31,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 07:31:31,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 21] total 55 [2024-11-03 07:31:31,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872158035] [2024-11-03 07:31:31,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 07:31:31,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-03 07:31:31,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 07:31:31,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-03 07:31:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2505, Unknown=0, NotChecked=0, Total=2970 [2024-11-03 07:31:31,554 INFO L87 Difference]: Start difference. First operand 1680 states and 2094 transitions. Second operand has 55 states, 55 states have (on average 2.672727272727273) internal successors, (147), 55 states have internal predecessors, (147), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)